Department of Commerce, Community, and Economic Development
Alaska Oil and Gas Conservation Commission
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HomeMy WebLinkAboutCO 793Conservation Order 793
Greater Mooses Tooth Field
1. April 12, 2021
CPAI Application for Pool Rules Rendezvous Oil Pool
(confidential, held in secure storage: Appendix 1)
2. April 16, 2021
Notice of Hearing, bulk mailing, email list
3. May 25, 2021
Transcript, Sign -in sheet, CPAI Presentation
(confidential, held in secure storage: CPAI Presentation)
4. May 27, 2021
CPA Supplemental Filing Clarifying Pool Area
5. August 2, 2021
CPAI Request for Reconsideration for Rendezvous Oil Pool
Findings 1 and 2
6. August 10, 2021
AOGCC grants permission to Request for Reconsideration in part
ORDERS
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
333 West 7th Avenue
Anchorage, Alaska 99501
Re: THE APPLICATION OF ConocoPhillips
Alaska, Inc. for an order for classification of a
new oil pool and to prescribe pool rules for
development of the proposed Rendezvous Oil
Pool within the Greater Moose's Tooth and
Bear Tooth Units, Greater Moose's Tooth
Field
IT APPEARING THAT:
Docket Number: CO-21-005
Conservation Order No, 793
Greater Moose's Tooth Unit
Bear Tooth Unit
Greater Moose's Tooth Field
Greater Moose's Tooth -Rendezvous Oil Pool
North Slope Borough, Alaska
July 13, 2021
1. By application received April 12, 2021, ConocoPhillips Alaska, Inc. (CPAI), as operator of the
Greater Moose's Tooth Unit (GMTU) and the Bear Tooth Unit (BTU), requested an order defining
a new oil pool, the Rendezvous Oil Pool (ROP), within the GMTU and BTU and prescribing rules
governing the development and operation of that pool.
2. Pursuant to 20 AAC 25.540, the Alaska Oil and Gas Conservation Commission (AOGCC)
scheduled a public hearing for May 25, 2021. On April 16, 2021, the AOGCC published notice
of that hearing on the State of Alaska's Online Public Notice website and on the AOGCC's website,
electronically transmitted the notice to all persons on the AOGCC's email distribution list and
mailed printed copies of the notice to all persons on the AOGCC's mailing distribution list. On
April 18, 2021, the notice was also published in the Anchorage Daily News.
3. No public comments on the application were received.
4. The hearing commenced at 10:00 a.m. on May 25, 2021. Testimony was received from
representatives of CPAI.
5. The record was closed at the end of the hearing.
FINDINGS:
Owners and Landowners: Surface owners of the ROP are Kuukpik Corporation and the Bureau of
Land Management (BLM). Subsurface owners of the ROP are Arctic Slope Regional Corporation
and BLM. CPAI is the sole working interest owner of the leased acreage within the proposed
Affected Area, as defined below.
2. Operator: CPAI is operator of all the leased acreage in the proposed Affected Area.
3. Affected Area: As currently mapped, the planned Affected Area lies onshore, North Slope, Alaska,
within the existing GMTU, BTU, and lands outside of those units (Figure 1, below). The Affected
Area for CPAI's proposed ROP lies southwest of the Colville River Unit (CRU). ROP will be the
second development that lies entirely within the National Petroleum Reserve -Alaska (NPR -A), to
the west and south of the initial development area for the Greater Moose's Tooth -Lookout Oil Pool.
CO 793
July 13, 2021
Page 2 of 13
4. Exploration and Delineation History: The ROP was first penetrated in 2000 by CPAI's
Rendezvous A exploratory well in Section 24, Township 10 North, Range I East, Umiat Meridian
(U.M.). Five additional exploratory wells were drilled by CPAI over the next few years.
Rendezvous 2, Spark 1 A, and Moose's Tooth C were drilled in 2001. Spark 4 and Carbon 1 were
drilled in 2004. In addition, the Altamum 1 exploratory well was drilled by Anadarko Petroleum
Corporation in 2002. Rendezvous 2 and Altamura 1 encountered black oil, while Rendezvous A,
Spark 1 A, Spark 4, and Carbon I encountered gas columns, with condensate in the gas.
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Figure 1. Proposed Affected Area (Source: ConocoPhillips Alaska, Inc.)
5. Pool Identification: As proposed, the ROP encompasses the late Jurassic -aged, shallow marine,
Alpine C and D intervals, in ascending stratigraphic order. These intervals unconformably overlie
Jurassic -aged Kingak Shale and underlie Cretaceous -aged Miluveach Shale. CPAI proposes the
ROP be defined as the accumulation of hydrocarbons common to, and correlating with, the interval
in Rendezvous 2 from the measured depths of 8,229 feet to 8,393 feet, which is equivalent to -8,104
to -8,268 feet true vertical depth subsea (TVDss). A type log is shown in Figure 2, below.
CO 793
July 13, 2021
Page 3 of 13
6. Geology:
a. Stratigraphy:
CPAI's proposed ROP consists of late Jurassic -aged sediments that are subdivided into the Alpine
C and D intervals. The Alpine C consists of transgressive, shallow marine, lower shoreface
sandstone deposits that infilled accommodation space atop the paleo-topographic surface created
by incision of the widespread Upper Jurassic Unconformity. Within the proposed development
area, the proposed ROP ranges in gross thickness from 164 feet in the Rendezvous 2 well to
approximately 35 feet in the Spark 4 well. Reservoir -quality Alpine C sandstones are the current
development target.
Figure 2. Proposed Rendezvous Oil Pool (Source: ConocoPhillips Alaska, Inc.)
CO 793
July 13, 2021
Page 4 of 13
Sandstones within the Alpine C interval are fine to very fine-grained and extensively
bioturbated. Porosity values range from 12 to 22 percent and average 15.6 percent, with
permeabilities ranging from 0.09 to 4.57 millidarcies and averaging 0.64mD. Water saturation
ranges from 30 to 80 percent and averages 49 percent. In general, Alpine C rock quality tends
to improve the north toward the Spark and Rendezvous exploratory wells, and it tends to
degrade somewhat to the south.
Alpine C interval sediments grade conformably upward into the overlying Alpine D interval,
which comprises siltstones and argillaceous sandstones that are distal deposits of the
transgressive sequence. CPAI requests Alpine D be included in the proposed ROP because the
Alpine C and D intervals constitute a continuous, gradational, transgressive sequence.
However, the Alpine D is not expected to contribute to pay or to provide a seal for injection
operations. The Alpine D, in turn, grades upward into the overlying, confining Miluveach shale.
b. Structure:
The overall structure of the proposed pool dips gently to the south. Two sets of early
Cretaceous -aged, normal faults have been mapped within the Affected Area using seismic data.
Faults of the first set trend west-northwest, are downthrown to the south, and display vertical
displacement ranging from 5 to 30 feet. These faults lie near the center of the proposed pool,
and they occur north of most of the proposed production and injection wells. The second set
of faults trends north-northeast through a portion of the eastern development area. These faults
are downthrown to the west and to the east, and they have 30 to 50 feet of vertical displacement.
On seismic lines, both sets of faults appear to end in the overlying Miluveach shale and in the
underlying Kingak shale. The vertical displacements of all identified faults are less than the
thickness of the proposed ROP within the planned development area, so they are not expected
to create separate reservoir compartments.
c. Trap Configuration and Seals:
Well log and seismic information indicate that the proposed pool is trapped stratigraphically.
Deep marine shales of the Miluveach, Kalubik, and HRZ intervals (in ascending stratigraphic
order) form the upper confining zone, which varies from 680 feet to over 1,600 feet. The
Kingak shale provides the lower confining interval, which is approximately 1,700 feet thick in
the pool area.
d. Reservoir Compartmentalization:
Reservoir compartmentalization is not expected in the proposed ROP.
e. Permafrost Base:
The base of permafrost is approximately -800 to -1,200 feet TVDss in the development area.
7. Reservoir Fluid Contacts: Gas and water contacts have been directly encountered within the ROP.
The gas -oil contact is estimated to be at -8,108 It TVDss based on modular formation dynamics
testing (MDT) data obtained in the Rendezvous A and Rendezvous 3 wells. Altamura 1 established
oil down to -8,450 ft TVDss. None of the exploratory or development wells drilled within the CRU
to the east or within the GMTU have encountered an oil -water contact in Jurassic -aged reservoirs.
CO 793
July 13, 2021
Page 5 of 13
8. Water Salinity Calculations: In the GMTU, several wells have been logged from surface through
the reservoir zone. Calculated water salinity ranges from 13,000 to 31,000 parts per million total
dissolved solids throughout the Cretaceous and older stratigraphic sequences.
9. Reservoir Fluid Properties (-8,140 feet TVDss):
Initial reservoir pressure
Reservoir temperature
Gas -oil ratio
API gravity
Bubble point pressure
Oil formation volume factor
Oil viscosity
Gas formation volume factor
3,802 psia
2070 F
1,270 scf/bbl
37.20
3,815 psia
1.77 rb/stbo
0.232 cp
0.8 rb/mscf (at saturation pressure)
10. In -Place and Recoverable Reserves Volumes:
Oil Rim Hydrocarbon Resources
Original Oil in Place (OOIP)
Primary Recovery (20% OOIP)
Primary + Waterflood + enriched gas (35-60% OOIP)
Gas Cap Resources
Original Gas in Place (OGIP)
Condensate Yield
Condensate in Place
Estimated Volume (MMSTB)
300-460
60-92
105-276
1.7to2.8TCF
30-60 STB/MMSCF
51-168 MMSTB
Project screening data and costs estimates indicated that a standalone processing facility for the
ROP is not feasible and that the only viable option for development at this time is to send
unprocessed production from the ROP to the Alpine Central Facility (ACF) in the CRU for
processing and sales conditioning. The ACF has no free -gas handling capacity so it is not feasible
to attempt to produce the gas cap to recover the condensate reserves. CPAI's plan to maintain a
voidage replacement ratio of 1:1 while developing the ROP oil rim should preserve the gas cap and
the condensate contained therein for potential future development.
11. Reservoir Development Drilling Plan: CPAI currently plans to develop the ROP from the MT7
Drill Site (also known as GMT2) utilizing 36 horizontal wells split evenly between producers and
injectors. Pilot holes may be drilled before drilling the horizontal wellbores. There is potential for
an additional 12 extended reach drilling (ERD) wells, split roughly evenly between producers and
injectors. Potential ERD wells will depend, in part, on drilling results and performance of the initial
wells. ERD wells would extend the core development to the east and west.
All wells will trend northwest, along the maximum principal stress direction, to improve water
flood performance. In the western part of the development area there will be two rows of wells: a
northern bank of 14 wells drilled from southeast to northwest and a southern bank of 13 wells
drilled northwest to southeast. Producers will alternate with injectors to form a line -drive enhanced
oil recovery (EOR) project. In the eastern portion of the development area there will be a single
row of 9 currently planned wells drilled from northwest to southeast.
Well spacing will be approximately 1,200 feet. The horizontal wellbore length within the reservoir
is planned to range from 10,000 to 18,000 feet. Production wells may be hydraulically fractured.
CO 793
July 13, 2021
Page 6 of 13
Northern wells beneath the ROP gas cap will be drilled near the base of the reservoir to minimize
the risk of gas coning. Hydraulic fracturing operations in these wells will be designed to avoid
fracking into the gas cap.
Development drilling commenced in the second quarter of 2021, and primary drilling is expected
to continue through the end of 2024. ERD drilling may occur later.
12. Reservoir Management: CPAI plans to develop the reservoir as a water- and
water -alternating -enriched -gas -injection enhanced oil recovery project. Production and injection
voidage will be balanced to maintain reservoir pressure at or near the original measured pressure.
Development will target a 1.0 voidage replacement ratio. Injection water will consist of produced
water and water from the Kuparuk seawater treatment plant.
13. Reservoir Surveillance Plans: CPAI proposes to meet bottom -hole pressure survey requirements
through the following reservoir pressure monitoring plan:
a. Static bottom -hole pressure surveys will be conducted in all new injection wells prior to
initiating injection.
b. Static bottom -hole surveys may be performed on production wells at the discretion of CPAI.
c. For annual pressure surveillance, a minimum of one pressure survey will be conducted annually
in the oil pool, concentrating on injection wells.
d. CPAI proposes the following alternative pressure survey methods:
i. Stabilized bottom -hole pressure surveys,
ii. Extrapolated from surface pressure on wells with a single phase of fluid in the
wellbore,
iii. Pressure fall -off measurements,
iv. Pressure buildup measurements,
V. Multi -rate tests, drill stem tests,
vi. Open hole formation tests,
vii. Other methods approved by the AOGCC.
Pressures will be referenced to calculate GOC of-8,108 feet TVDss. All pressure surveys will be
reported annually.
14. Wellbore Construction: Within the planned development area, the base of permafrost is interpreted
to be between -800 and -1,200 feet TVDss. Surface casing will be set below the C-5 marker in the
Colville Group and cemented to the surface. Wells will be of three or four casing -string designs.
Three string wells will have the intermediate casing set near the top of the Alpine C Sand. Four
string wells will have intermediate casing set at the top of the HRZ, and an intermediate liner set
near the top of the Alpine C. The intermediate liner in the four string wells may be drilled
conventionally or with steerable drilling liners. Formation integrity tests will be conducted after
drilling out of the casing shoes.
CO 793
July 13, 2021
Page 7 of 13
CPAI expects to develop the reservoir using horizontal wells. Production wells will be completed
with uncemented solid liners including pre -perforated pups and fracture sleeves while injectors will
be unlined barefoot completions. External swell packers may be used on the producers to isolate
out -of -pay excursions and/or fault crossings and to allow for future well intervention optionality.
Both injection and production wells will likely be completed with 4%: inch tubing to minimize
hydraulic friction. Artificial lift is planned to be provided by gas lift; other methods may be
implemented as the field matures.
15. Metering and Measurement Processes: Well testing and allocation will be conducted with a
two-phase well test separator, with all wells being tested at least monthly. Fiscal allocation
metering was addressed under Other Order No. 148 issued on December 19, 2018.
16. Waivers: CPAI requested the following waivers:
a. Well Spacing: Spacing restrictions of 20 AAC 25.055 be waived for development wells in the
proposed ROP to accommodate horizontal, line -drive wells and maximize ultimate recovery.
Without prior approval, development wells will not be completed any closer than 500 feet to
an external boundary where ownership and/or landownership changes.
b. Directional Wellbore Plans: In lieu of the requirements of 20 AAC 25.050(b), permit to drill
application(s) shall include: plan view, vertical section, close approach data, and directional
data.
c. Gas -Oil Ratio (GOR) Exemption: an exemption from the GOR limits of 20 AAC 25.240 to
accommodate water -alternating -gas -injection for oil recovery.
CONCLUSIONS:
1. Pool Rules are appropriate for CPAI's development of the proposed ROP within the GMTU and
BTU.
2. Eliminating spacing restrictions on wellbores within the Affected Area will increase the operator's
flexibility in placing wells as the pool is developed and will not affect recovery, promote waste,
jeopardize correlative rights, or result in an increased risk of fluid movement into freshwater
aquifers.
3. Correlative rights of owners and landowners of offset acreage will be protected by a 500-foot
set -back requirement from a property line where landowners and owners are not the same.
4. Water and water -alternating -gas injection into the ROP will preserve reservoir energy and increase
ultimate recovery.
5. There are no freshwater aquifers in the proposed Affected Area of the ROP.
6. Annular pressure management is necessary to prevent failure of well integrity and uncontrolled
release of fluids or pressure and to minimize threats to human safety and the environment.
CO 793
July 13, 2021
Page 8 of 13
7. Granting CPAI's requested Directional Wellbore Plan waiver in lieu of 20 AAC 25.050(b) will
ensure equally accurate surveillance of the wellbore to prevent well intersection, compliance with
spacing requirements, and protection of correlative rights.
8. A GOR limitation waiver is appropriate because the ROP will be developed as a waterflood and
water -alternating -enriched -gas enhanced recovery project. Once pressure maintenance operations
commence, GORs should not exceed the limits imposed by 20 AAC 25.240(a). However, before
the pressure maintenance operations commence, injectors may he pre -produced to ensure adequate
reservoir voidage to accommodate water injection. During this period, there may be wells that
exceed the GOR limits.
9. Although the proposed Affected Area extends on to the BTU, the area the CPA] proposes to
develop with initial development wells and potential ERD wells lies entirely within the GMTU.
10. CPAI's proposed Administrative Action rule is unnecessary.
NOW THEREFORE IT IS ORDERED:
Development and operation of the GMTU and BTU Lookout Oil Pool is subject to the following rules and
the statewide requirements under 20 AAC 25 to the extent not superseded by these rules:
Affected Area: Umiat Meridian (See Figure 1)
Township 8 North, Range 1 East
Sections 1-5 - All
Section 8 - NEIA
Section 9 - N 1/2
Sections 10-12 - Nl/2
Township 8 North, Range 2 East
Section 4 - W 1/2
Sections 5-6 - All
Section 7 - N 1/2
Section 8- NW 1 A
Township 9 North, Range 1 East
Sections 1-3 - All
Section 4 - N 1/2, SE 1 A
Section 10 - N 1/2, SE 1 A
Sections 1 I-14 - All
Section 15-NEl/4, Sl/2
Section 21 -NEIA Sl/2
Sections 22-28 - All
Section 29 - NEIA, Sl/2
Sections 32-36 —All
CO 793
July 13, 2021
Page 9 of 13
Township 9 North, Range 2 East
Sections 1-10 - All
Section 11 -N1/2
Section 12-N1/2
Section 15 - WI/2
Sections 16-21 - All
Section 22 - W 1 /2
Sections 29-31 - All
Township 9 North, Range 3 East
Section 5 — W 1 /2
Section 6 — All
Section 7 — N 1 /2
Section 8—NW1/4
Township 10 North, Range 1 West
Sections 1-4 —All
Section 5 — E 1 /2
Section 8 — NE 1 A
Sections 9-12 — All
Section 13 — N 1 /2
Section 14—N1/2
Section 15—N1/2
Section 16—NEIA
Township 10 North, Range 1 East
Sections 1-17 —All
Section 18—N1/2
Section 20 — E 1 /2
Sections 21-28 — All
Section 29 — E 1 /2
Section 32 — EI/2
Sections 33-36 — All
Township 10 North, Range 2 East
Section 3 — NW 1/4, S1/2
Sections 4-10 — All
Section 11—NW1/4, SI/2
Section 12—S1/2
Sections 13-36—All
CO 793
July 13, 2021
Page 10 of 13
Township 10 North, Range 3 East
Section 18 — W 1/2
Section 19 — W 1 /2
Section 30 — NW 1/4, S 1 /2
Section 31 —All
Section 32 — S W 1 A
Township 11 North, Range 1 West
Section 25 — S1/2
Section 33 — S 1 /2
Sections 34-36 —All
Township 11 North, Range 1 East
Section 9 — SEl/4
Section 10-S1/2
Section 11 — SW 1 A
Section 13 — S 1 /2
Sections 14-16 — All
Section 17—SE1A
Section 19—SE1A
Sections 20-29 — All
Section 30—NE1A, S1/2
Sections 31-36 —All
Township 11 North, Range 2 East
Section 18— S1/2
Sections 19-20 — All
Section 21 —SW]/4
Section 27 — S W 1 /4
Sections 28-33 —All
Section 34 — W 1/2
Rule 1 Field and Pool Name
The field is the Greater Moose's Tooth Field. Hydrocarbons underlying the Affected Area and within the
interval identified in Rule 2, below, constitute the ROP.
Rule 2 Pool Definition
The ROP is defined as the accumulation of oil common to and corcelating with the interval between the
measured depths of 8,229 and 8,393 feet on the resistivity log recorded in the Rendezvous 2 well. (See
Figure 2, above.)
Rule 3 Well Saacine
There shall be no restrictions as to well spacing except that no pay shall be opened to a well within 500 feet
of an external property line where the owners and landowners are not the same on both sides of the line.
CO 793
July 13, 2021
Page 1 I of 13
Rule 4 Drilling Waivers
All permit to drill applications for deviated wells within the ROP shall include a plat with a plan view,
vertical section, close approach data and a directional program description in lieu of the requirements of
20 AAC 25.050(b).
Rule 5 Well Logging and Sampling Requirements
a. A suite of petrophysical well logs including, at a minimum, gamma ray, resistivity, neutron
porosity, and density porosity logs shall be acquired across the ROP in one well from each drill
site. Gamma ray and resistivity curves shall be recorded from base of conductor to total depth in
each well. The AOGCC may require additional wells to be logged using one or more petrophysical
logging tools.
b. A mud log and cutting samples shall be obtained from the base of the conductor through the ROP
in at least one well drilled from each drill site.
Rule 6 Reservoir Pressure Monitoring
a. A bottom -hole pressure survey shall be taken on each well prior to initial injection.
b. The operator shall obtain the pressure surveys needed to manage properly the hydrocarbon recovery
processes subject to the annual plan outlined in Rule 8, below. At a minimum, a pressure survey
shall be acquired from at least one well on each drill site each year.
c. The reservoir pressure datum will be -8,108 feet TVDss.
d. Pressure surveys may consist of stabilized static pressure measurements at bottom -hole or be
extrapolated from surface measurements (single phase fluid conditions), pressure fall -off
measurements, pressure buildup measurements, multi -rate test results, drill stem test results, and
open -hole formation tests or other methods approved by the AOGCC.
e. A Reservoir Pressure Report, Form 10-412, shall be utilized for all surveys; all relevant data shall
be attached to the report. The data submitted shall include, at a minimum, rate, pressure, depth,
fluid gradient, temperature, and all other well conditions necessary for a complete analysis of each
survey being conducted.
f. The results and data from any special reservoir pressure monitoring tests or surveys shall also be
submitted in accordance with paragraph (e) of this rule.
Rule 7 Gas -Oil Ratio Exemption
Wells producing from the ROP are exempt from the GOR limits of 20 AAC 25.240(a) as long as CPAI is
engaged in enhanced recovery operations. An enhanced recovery operation must be initiated within 12
months of the issuance of this order.
CO 793
July 13, 2021
Page 12 of 13
Rule 8 Annual Reservoir Review
a. An annual reservoir surveillance report must be filed by April V of each year and include future
development plans, reservoir depletion plans, and surveillance information for the prior calendar
year, including:
i. The voidage balance, by month, of produced fluids and injected fluids and the cumulative
status for each producing interval;
ii. A reservoir pressure map at datum, and a summary and analysis of the reservoir pressure
surveys within the pool;
iii. The results and, where appropriate, an analysis of production and injection log surveys,
tracer surveys, observation well surveys, and any other special monitoring;
iv. A review of pool production allocation factors and issues over the prior year;
V. A review of the progress of the enhanced recovery project; and
vi. A reservoir management summary, including results of any reservoir simulation studies.
Rule 9 Sustained Casing Pressure for Production Wells
a. At the time of installation or replacement, the operator shall conduct and document a pressure test
of tubulars and completion equipment in each production well that is sufficient to demonstrate that
planned well operations will not result in failure of well integrity, uncontrolled release of fluid or
pressure, or threat to human safety.
b. The operator shall monitor each production well daily to check for sustained pressure, except if
prevented by extreme weather conditions, emergency situations, or unavoidable circumstances.
Monitoring results shall be kept available for AOGCC inspections.
c. The operator shall notify the AOGCC within three working days after the operator identifies a well
as having: (i) sustained inner annulus pressure that exceeds 2,000 pounds per square in gauge (psig)
for all production wells, or (ii) sustained outer annulus pressure that exceeds 1,000 psig.
d. If the operator identifies sustained pressure in the inner annulus of a production well that exceeds
45 percent of the burst pressure rating of the well's production casing for inner annulus pressure,
or sustained pressure in the outer annulus that exceeds 45 percent of the burst pressure rating of the
well's surface casing for outer annulus pressure, the operator shall notify the AOGCC within three
working days and take corrective action. Unless well conditions require the operator to take
emergency corrective action before AOGCC approval can be obtained, the operator shall submit in
an Application for Sundry Approvals (Form 10-403) a proposal for corrective action. The AOGCC
may approve the operator's proposal or require other corrective action, including a mechanical
integrity test or other diagnostic tests. The operator shall give the AOGCC sufficient notice of the
testing schedule to allow the AOGCC to witness the tests.
e. Except as otherwise approved by the AOGCC under (d) of this rule, before a shut-in well is placed
in service, any annulus pressure must be relieved to a sufficient degree: (1) that the inner annulus
pressure at operating temperature will be below 2,000 psig, and (2) that the outer annulus pressure
at operating temperature will be below 1,000 psig.
CO 793
July 13, 2021
Page 13 of 13
A well subject to (c) but not (d) of this rule may reach an annulus pressure at operating temperature
that is described in the operator's notification to the AOGCC under (c) of this rule, unless the
AOGCC prescribes a different limit.
f. For purposes of this rule,
i. "inner annulus" means the space in a well between tubing and production casing;
ii. `outer annulus" means the space in a well between production casing and surface casing;
and
iii. "sustained pressure" means pressure that (A) is measurable at the casing head of an
annulus, (B) is not caused solely by temperature fluctuations, and (C) has not been applied
intentionally.
Rule 10 Production Surface Commineline. Measurement and Allocation
a. Production from ROP maybe commingled on the surface with production from other pools within
the GMTU and the CRU.
b. Wells must be tested at least monthly.
DONE at Anchorage, Alaska and dated July 13, 2021.
Jerem Digitally signed
Y by Jeremy Fdce
Price Dele: M21.07.13
i&301746tl0'
Jeremy M. Price
Chair, Commissioner
Digitally signed by
Daniel
DanlelS arnwnt
SeamOunt Dee: ,4ox-0a'(ID'1rW
1453:43
Daniel T. Seamount, Jr.
Commissioner
Digitally signed by
Jessie L. Jessie L. chmielow:
Chmielowski 111121.07.13
14:4354 -06'DD
Jessie L. Chmielowski
Commissioner
As provided in AS 31.05.080(a), within 20 days after written notice of the entry of this order or decision, or such further time
as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration
of the matter determined by it. If the notice was mailed, then the period of time shall be 23 days. An application for
reconsideration must set out the respect in which the order or decision is believed to be erroneous.
The AOGCC shall grant or refuse the application for reconsideration in whole or in part within 10 days after it is filed. Failure
to act on it within 10-days is a denial of reconsideration. If the AOGCC denies reconsideration, upon denial, this order or
decision and the denial of reconsideration are FINAL and may be appealed to superior court. The appeal MUST be filed within
33 days after the date on which the AOGCC mails, OR 30 days if the AOGCC otherwise distributes, the order or decision
denying reconsideration, UNLESS the denial is by inaction, in which case the appeal MUST be filed within 40 days after the
date on which the application for reconsideration was filed.
If the AOGCC grants an application for reconsideration, this order or decision does not become final. Rather, the order or
decision on reconsideration will be the FINAL order or decision of the AOGCC, and it may be appealed to superior court. That
appeal MUST be filed within 33 days after the date on which the AOGCC mails, OR 30 days if the AOGCC otherwise
distributes, the order or decision on reconsideration.
In computing a period of time above, the date of the event or default after which the designated period begins to ran is not
included in the period; the last day of the period is included, unless it falls on a weekend or state holiday, in which event the
Period runs until 5:00 p.m. on the next day that does not fall on a weekend or state holiday.
Salazar, Grace (CED)
From: Salazar, Grace (CED) <grace.salazar@alaska.gov>
Sent: Tuesday, July 13, 2021 5:04 PM
To: AOGCC Public Notices
Subject: [AOGCC-Public-Notices] AOGCC Conservation Order No. 793
Attachments: CO 793.pdf
Please see attached.
Re: THE APPLICATION OF ConocoPhillips Alaska, Inc.
for an order for classification of a new oil pool and
to prescribe pool rules for development of the
proposed Rendezvous Oil Pool within the Greater
Moose's Tooth and Bear Tooth Units, Greater
Moose's Tooth
Field
f-
Respectfully,
M. Grace Salazar, Special Assistant
Alaska Oil and Gas Conservation Commission
333 West 7th Avenue
Anchorage, AK 99501
Direct: (907) 793-1221
Email: grace.salazar@alaska.gov
https://www.commerce.alaska.gov/web/aogcc
Docket Number: CO-21-005
Conservation Order No. 793
Greater Moose's Tooth Unit
Bear Tooth Unit
Greater Moose's Tooth Field
Greater Moose's Tooth -Rendezvous Oil
Poo[
North Slope Borough, Alaska
July 13, 2021
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Bernie Karl
K&K Recycling Inc.
P.O. Box 58055
Fairbanks, AK 99711
George Vaught, Jr.
P.O. Box 13557
Denver, CO 80201-3557
Gordon Severson
3201 Westmar Cir.
Anchorage, AK 99508-4336
Darwin Waldsmith
P.O. Box 39309
Ninilchik, AK 99639
Richard Wagner
P.O. Box 60868
Fairbanks, AK 99706
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
333 West 7th Avenue
Anchorage, Alaska 99501
Re: THE APPLICATION OF ConocoPhillips ) Docket Number: CO-21-005
Alaska, Inc. for an order for classification of a ) Conservation Order No. 793 Amended
new oil pool and to prescribe pool rules for ) Greater Moose's Tooth Unit
development of the proposed Rendezvous Oil ) Bear Tooth Unit
Pool within the Greater Moose's Tooth and ) Greater Moose's Tooth Field
Bear Tooth Units, Greater Moose's Tooth ) Greater Moose's Tooth -Rendezvous Oil Pool
Field ) North Slope Borough, Alaska
August 10, 2021
IT APPEARING THAT:
By application received April 12, 2021, ConocoPhillips Alaska, Inc. (CPAI), as operator of the Greater
Moose's Tooth Unit (GMTU) and the Bear Tooth Unit (BTU), requested an order defining a new oil pool,
the Rendezvous Oil Pool (ROP), within the GMTU and BTU and prescribing rules governing the
development and operation of that pool.
2. Pursuant to 20 AAC 25.540, the Alaska Oil and Gas Conservation Commission (AOGCC) scheduled a
public hearing for May 25, 2021. On April 16, 2021, the AOGCC published notice of that hearing on the
State of Alaska's Online Public Notice website and on the AOGCC's website, electronically transmitted
the notice to all persons on the AOGCC's email distribution list and mailed printed copies of the notice to
all persons on the AOGCC's mailing distribution list. On April 18, 2021, the notice was also published in
the Anchorage Daily News.
3. No public comments on the application were received.
4. The hearing commenced at 10:00 a.m. on May 25, 2021. Testimony was received from representatives of
CPAI.
5. The record was closed at the end of the hearing.
6. On July 13, 2021, AOGCC issued Conservation Order 793.
7. On August 2, 2021, CPAI requested reconsideration. This amended order is entered in response to CPAI's
request.
FINDINGS:
Owners and Landowners: Surface owners of the ROP area are Kuukpik Corporation and the Bureau of
Land Management (BLM). Subsurface owners of the ROP area are Arctic Slope Regional Corporation and
BLM. CPAI is the 100% working interest owner of the leased acreage within the BMTU and Bear Tooth
Unit (BTU). There are leases included in the ROP Affected Area that are currently unleased or owned by
other operators.
2. Operator: CPAI is operator of the oil and gas leases within the GMTU and BTU. There are leases included
in the ROP Affected Area that are currently unleased or operated by others.
CO 793 Amended
August 10, 2021
Page 2 of 13
3. Affected Area: As currently mapped, the planned Affected Area lies onshore, North Slope, Alaska, within
the existing GMTU, BTU, and lands outside of those units (Figure 1, below). The Affected Area for CPAI's
proposed ROP lies southwest of the Colville River Unit (CRU). ROP will be the second development that
lies entirely within the National Petroleum Reserve -Alaska (NPR -A), to the west and south of the initial
development area for the Greater Moose's Tooth -Lookout Oil Pool.
4. Exploration and Delineation History: The ROP was first penetrated in 2000 by CPAI's Rendezvous A
exploratory well in Section 24, Township 10 North, Range 1 East, Umiat Meridian (U.M.). Five additional
exploratory wells were drilled by CPAI over the next few years. Rendezvous 2, Spark IA, and Moose's
Tooth C were drilled in 2001. Spark 4 and Carbon 1 were drilled in 2004. In addition, the Altamura 1
exploratory well was drilled by Anadarko Petroleum Corporation in 2002. Rendezvous 2 and Altamura 1
encountered black oil, while Rendezvous A, Spark IA, Spark 4, and Carbon 1 encountered gas columns,
with condensate in the gas.
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CO 793 Amended
August 10, 2021
Page 3 of 13
5. Pool Identification: As proposed, the ROP encompasses the late Jurassic -aged, shallow marine, Alpine C
and D intervals, in ascending stratigraphic order. These intervals unconformably overlie Jurassic -aged
Kingak Shale and underlie Cretaceous -aged Miluveach Shale. CPAI proposes the ROP be defined as the
accumulation of hydrocarbons common to, and correlating with, the interval in Rendezvous 2 from the
measured depths of 8,229 feet to 8,393 feet, which is equivalent to -8,104 to -8,268 feet true vertical depth
subsea (TVDss). A type log is shown in Figure 2, below.
6. Geology:
a. Stratigraphy:
CPAI's proposed ROP consists of late Jurassic -aged sediments that are subdivided into the Alpine C and D
intervals. The Alpine C consists of transgressive, shallow marine, lower shoreface sandstone deposits that
infilled accommodation space atop the paleo-topographic surface created by incision of the widespread
Upper Jurassic Unconformity. Within the proposed development area, the proposed ROP ranges in gross
thickness from 164 feet in the Rendezvous 2 well to approximately 35 feet in the Spark 4 well.
Reservoir -quality Alpine C sandstones are the current development target.
Figure 2. Proposed Rendezvous Oil Pool (Source: ConocoPhillips Alaska, Inc.)
CO 793 Amended
August 10, 2021
Page 4 of 13
Sandstones within the Alpine C interval are fine to very fine-grained and extensively bioturbated.
Porosity values range from 12 to 22 percent and average 15.6 percent, with permeabilities ranging from
0.09 to 4.57 millidarcies and averaging 0.64mD. Water saturation ranges from 30 to 80 percent and
averages 49 percent. In general, Alpine C rock quality tends to improve the north toward the Spark and
Rendezvous exploratory wells, and it tends to degrade somewhat to the south.
Alpine C interval sediments grade conformably upward into the overlying Alpine D interval, which
comprises siltstones and argillaceous sandstones that are distal deposits of the transgressive sequence.
CPAI requests Alpine D be included in the proposed ROP because the Alpine C and D intervals
constitute a continuous, gradational, transgressive sequence. However, the Alpine D is not expected to
contribute to pay or to provide a seal for injection operations. The Alpine D, in turn, grades upward
into the overlying, confining Miluveach shale.
b. Structure:
The overall structure of the proposed pool dips gently to the south. Two sets of early Cretaceous -aged,
normal faults have been mapped within the Affected Area using seismic data. Faults of the first set
trend west-northwest, are downthrown to the south, and display vertical displacement ranging from 5
to 30 feet. These faults lie near the center of the proposed pool, and they occur north of most of the
proposed production and injection wells. The second set of faults trends north-northeast through a
portion of the eastern development area. These faults are downthrown to the west and to the east, and
they have 30 to 50 feet of vertical displacement. On seismic lines, both sets of faults appear to end in
the overlying Miluveach shale and in the underlying Kingak shale. The vertical displacements of all
identified faults are less than the thickness of the proposed ROP within the planned development area,
so they are not expected to create separate reservoir compartments.
c. Trap Configuration and Seals:
Well log and seismic information indicate that the proposed pool is trapped stratigraphically. Deep
marine shales of the Miluveach, Kalubik, and HRZ intervals (in ascending stratigraphic order) form the
upper confining zone, which varies from 680 feet to over 1,600 feet. The Kingak shale provides the
lower confining interval, which is approximately 1,700 feet thick in the pool area.
d. Reservoir Compartmentalization:
Reservoir compartmentalization is not expected in the proposed ROP.
e. Permafrost Base:
The base of permafrost is approximately -800 to -1,200 feet TVDss in the development area.
Reservoir Fluid Contacts: Only a gas -oil contact has been directly encountered with the ROP. A water
contact has not been encountered within the ROP. The gas oil contact is estimated to be at -8,108 ft TVDss
based on modular formation dynamics testing (MDT) data obtained in the Rendezvous A and Rendezvous
3 wells. Altamura 1 established oil down to -8,450 ft TVDss. None of the exploratory or development wells
drilled within the CRU to the east or within the GMTU have encountered an oil -water contact in the
Jurassic -aged reservoir.
CO 793 Amended
August 10, 2021
Page 5 of 13
8. Water Salinity Calculations: In the GMTU, several wells have been logged from surface through the
reservoir zone. Calculated water salinity ranges from 13,000 to 31,000 parts per million total dissolved
solids throughout the Cretaceous and older stratigraphic sequences.
9. Reservoir Fluid Properties (-8.140 feet TVDss):
Initial reservoir pressure
Reservoir temperature
Gas -oil ratio
API gravity
Bubble point pressure
Oil formation volume factor
Oil viscosity
Gas formation volume factor
3,802 psia
2070 F
1,270 scf/bbl
37.20
3,815 psia
1.77 rb/stbo
0.232 cp
0.8 rb/mscf (at saturation pressure)
10. In -Place and Recoverable Reserves Volumes:
Oil Rim Hydrocarbon Resources
Original Oil in Place (OOIP)
Primary Recovery (20% OOIP)
Primary + Waterflood + enriched gas (35-60% OOIP)
Gas Cap Resources
Original Gas in Place (OGIP)
Condensate Yield
Condensate in Place
Estimated Volume (MMSTB)
300-460
60-92
105-276
1.7to2.8TCF
30-60 STB/MMSCF
51-168 MMSTB
Project screening data and costs estimates indicated that a standalone processing facility for the ROP is not
feasible and that the only viable option for development at this time is to send unprocessed production from
the ROP to the Alpine Central Facility (ACF) in the CRU for processing and sales conditioning. The ACF
has no free -gas handling capacity so it is not feasible to attempt to produce the gas cap to recover the
condensate reserves. CPAI's plan to maintain a voidage replacement ratio of 1:1 while developing the ROP
oil rim should preserve the gas cap and the condensate contained therein for potential future development.
11. Reservoir Develonment Drilling Plan: CPAI currently plans to develop the ROP from the MT7 Drill Site
(also known as GMT2) utilizing 36 horizontal wells split evenly between producers and injectors. Pilot
holes may be drilled before drilling the horizontal wellbores. There is potential for an additional 12
extended reach drilling (ERD) wells, split roughly evenly between producers and injectors. Potential ERD
wells will depend, in part, on drilling results and performance of the initial wells. ERD wells would extend
the core development to the east and west.
All wells will trend northwest, along the maximum principal stress direction, to improve water flood
performance. In the western part of the development area there will be two rows of wells: a northern bank
of 14 wells drilled from southeast to northwest and a southern bank of 13 wells drilled northwest to
southeast. Producers will alternate with injectors to form a line -drive enhanced oil recovery (EOR) project.
In the eastern portion of the development area there will be a single row of 9 currently planned wells drilled
from northwest to southeast.
CO 793 Amended
August 10, 2021
Page 6 of 13
Well spacing will be approximately 1,200 feet. The horizontal wellbore length within the reservoir is
planned to range from 10,000 to 18,000 feet. Production wells may be hydraulically fractured. Northern
wells beneath the ROP gas cap will be drilled near the base of the reservoir to minimize the risk of gas
coning. Hydraulic fracturing operations in these wells will be designed to avoid fracking into the gas cap.
Development drilling commenced in the second quarter of 2021, and primary drilling is expected to
continue through the end of 2024. ERD drilling may occur later.
12. Reservoir Mana eg ment: CPAI plans to develop the reservoir as a water- and
water -alternating -enriched -gas -injection enhanced oil recovery project. Production and injection voidage
will be balanced to maintain reservoir pressure at or near the original measured pressure. Development
will target a 1.0 voidage replacement ratio. Injection water will consist of produced water and water from
the Kuparuk seawater treatment plant.
13. Reservoir Surveillance Plans: CPAI proposes to meet bottom -hole pressure survey requirements through
the following reservoir pressure monitoring plan:
a. Static bottom -hole pressure surveys will be conducted in all new injection wells prior to initiating
injection.
b. Static bottom -hole surveys may be performed on production wells at the discretion of CPAI.
c. For annual pressure surveillance, a minimum of one pressure survey will be conducted annually in the
oil pool, concentrating on injection wells.
d. CPAI proposes the following alternative pressure survey methods:
Stabilized bottom -hole pressure surveys,
ii. Extrapolated from surface pressure on wells with a single phase of fluid in the wellbore,
iii. Pressure fall -off measurements,
iv. Pressure buildup measurements,
Multi -rate tests, drill stem tests,
vi. Open hole formation tests,
vii. Other methods approved by the AOGCC.
Pressures will be referenced to calculate GOC of -8,108 feet TVDss. All pressure surveys will be reported
annually.
14. Wellbore Construction: Within the planned development area, the base of permafrost is interpreted to be
between -800 and -1,200 feet TVDss. Surface casing will be set below the K-3 marker in the Nanushuk
Group and cemented to the surface. Wells will be of three or four casing -string designs. Three string wells
will have the intermediate casing set near the top of the Alpine C Sand. Four string wells will have
intermediate casing set at the top of the HRZ, and an intermediate liner set near the top of the Alpine C.
The intermediate liner in the four string wells may be drilled conventionally or with steerable drilling liners.
Formation integrity tests will be conducted after drilling out of the casing shoes.
CO 793 Amended
August 10, 2021
Page 7 of 13
CPA] expects to develop the reservoir using horizontal wells. Production wells will be completed with
uncemented solid liners including pre -perforated pups and fracture sleeves while injectors will be unlined
barefoot completions. External swell packers may be used on the producers to isolate out -of -pay excursions
and/or fault crossings and to allow for future well intervention optionality. Both injection and production
wells will likely be completed with 4% inch tubing to minimize hydraulic friction. Artificial lift is planned
to be provided by gas lift; other methods may be implemented as the field matures.
15. Metering and Measurement Processes: Well testing and allocation will be conducted with a two-phase well
test separator, with all wells being tested at least monthly. Fiscal allocation metering was addressed under
Other Order No. 148 issued on December 19, 2018.
16. Waivers: CPAI requested the following waivers:
a. Well Spacing: Spacing restrictions of 20 AAC 25.055 be waived for development wells in the proposed
ROP to accommodate horizontal, line -drive wells and maximize ultimate recovery. Without prior
approval, development wells will not be completed any closer than 500 feet to an external boundary
where ownership and/or landownership changes.
b. Directional Wellbore Plans: In lieu of the requirements of 20 AAC 25.050(b), permit to drill
application(s) shall include: plan view, vertical section, close approach data, and directional data.
c. Gas -Oil Ratio (GOR) Exemption: an exemption from the GOR limits of 20 AAC 25.240 to
accommodate water -alternating -gas -injection for oil recovery.
CONCLUSIONS:
1. Pool Rules are appropriate for CPAI's development of the proposed ROP within the GMTU and BTU.
2. Eliminating spacing restrictions on wellbores within the Affected Area will increase the operator's
flexibility in placing wells as the pool is developed and will not affect recovery, promote waste, jeopardize
correlative rights, or result in an increased risk of fluid movement into freshwater aquifers.
3. Correlative rights of owners and landowners of offset acreage will be protected by a 500-foot set -back
requirement from a property line where landowners and owners are not the same.
4. Water and water -alternating -gas injection into the ROP will preserve reservoir energy and increase ultimate
recovery.
5. There are no freshwater aquifers in the proposed Affected Area of the ROP.
6. Annular pressure management is necessary to prevent failure of well integrity and uncontrolled release of
fluids or pressure and to minimize threats to human safety and the environment.
7. Granting CPAI's requested Directional Wellbore Plan waiver in lieu of 20 AAC 25.050(b) will ensure
equally accurate surveillance of the wellbore to prevent well intersection, compliance with spacing
requirements, and protection of correlative rights.
CO 793 Amended
August 10, 2021
Page 8 of 13
8. A GOR limitation waiver is appropriate because the ROP will be developed as a waterflood and water -
alternating -enriched -gas enhanced recovery project. Once pressure maintenance operations commence,
GORs should not exceed the limits imposed by 20 AAC 25.240(a). However, before the pressure
maintenance operations commence, injectors may be pre -produced to ensure adequate reservoir voidage to
accommodate water injection. During this period, there may be wells that exceed the GOR limits.
9. Although the proposed Affected Area extends on to the BTU, the area the CPAI proposes to develop with
initial development wells and potential ERD wells lies entirely within the GMTU.
10. CPAI's proposed Administrative Action rule is unnecessary.
NOW THEREFORE IT IS ORDERED:
Development and operation of the GMTU and BTU Rendezvous Oil Pool is subject to the following rules and the
statewide requirements under 20 AAC 25 to the extent not superseded by these rules:
Affected Area: Umiat Meridian (See Figure 1)
Township 8 North, Range 1 East
Sections 1-5 - All
Section 8 -NEIA
Section 9 - N1/2
Sections 10-12 - N1/2
Township 8 North, Range 2 East
Section 4 - W1/2
Sections 5-6 - All
Section 7 - N1/2
Section 8 - N W 1 /4
Township 9 North, Range 1 East
Sections 1-3 - All
Section 4- N 1 /2, SE 1 A
Section 10 - Nl/2, SE1/4
Sections 11-14 - All
Section 15 - NE1/4, Sl/2
Section21-NEI/4, S1/2
Sections 22-28 - All
Section 29 - NE 1 /4, S l /2
Sections 32-36 —All
CO 793 Amended
August 10, 2021
Page 9 of 13
Township 9 North, Range 2 East
Sections 1-10 - All
Section 11 -N1/2
Section 12-N1/2
Section 15 - W 1/2
Sections 16-21 - All
Section 22 - W 1 /2
Sections 29-32 - All
Township 9 North, Range 3 East
Section 5 — WI/2
Section 6 — All
Section 7—N1/2
Section 8 — N W I /4
Township 10 North, Range 1 West
Sections 1-4 —All
Section 5 — E 1 /2
Section 8 — NE 1 /4
Sections 9-12 — All
Section 13 — N 1 /2
Section 14—N1/2
Section 15—NI/2
Section 16—NEIA
Township 10 North, Range 1 East
Sections 1-17 — All
Section 18—NI/2
Section 20 — E I /2
Sections 21-28 — All
Section 29 — E 1 /2
Section 32 — E 1 /2
Sections 33-36 — All
Township 10 North, Range 2 East
Section 3 —NW l/4, 51/2
Sections 4-10 — All
Section 11—NWl/4, Sl/2
Section 12—S1/2
Sections 13-36 —All
CO 793 Amended
August 10, 2021
Page 10 of 13
Township 10 North, Range 3 East
Section 18 — W 1/2
Section 19 — W 1 /2
Section 30 — N W 1 /4, S I /2
Section 31 — All
Section 32 — S W 1 /4
Township I 1 North, Range 1 West
Section 25 — S1/2
Section 33 — Sl/2
Sections 34-36 — All
Township 11 North, Range 1 East
Section 9—SE1/4
Section 10-S1/2
Section 11 —SW]/4
Section 13 — S 1 /2
Sections 14-16 — All
Section 17—SE1/4
Section 19—SE1/4
Sections 20-29 — All
Section 30—NE1/4, Sl/2
Sections 31-36 — All
Township 1 I North, Range 2 East
Section 18 — Sl/2
Sections 19-20 — All
Section 21 — S W 1 /4
Section 27 — SW 1 /4
Sections 28-33 — All
Section 34— WI/2
Rule 1 Field and Pool Name
The field is the Greater Moose's Tooth Field. Hydrocarbons underlying the Affected Area and within the interval
identified in Rule 2, below, constitute the ROP.
Rule 2 Pool Definition
The ROP is defined as the accumulation of oil common to and correlating with the interval between the measured
depths of 8,229 and 8,393 feet on the resistivity log recorded in the Rendezvous 2 well. (See Figure 2, above.)
Rule 3 Well Soacinz
There shall be no restrictions as to well spacing except that no pay shall be opened to a well within 500 feet of an
external property line where the owners and landowners are not the same on both sides of the line.
CO 793 Amended
August 10, 2021
Page 11 of 13
Rule 4 Drilling Waivers
All permit to drill applications for deviated wells within the ROP shall include a plat with a plan view, vertical
section, close approach data and a directional program description in lieu of the requirements of 20 AAC 25.050(b).
Rule 5 Well Logging and Sampling Requirements
a. A suite of petrophysical well logs including, at a minimum, gamma ray, resistivity, neutron porosity, and
density porosity logs shall be acquired across the ROP in one well from each drill site. Gamma ray or
resistivity curves shall be recorded from base of conductor to total depth in each well. The AOGCC may
require additional wells to be logged using one or more petrophysical logging tools.
b. A mud log and cutting samples shall be obtained from the base of the conductor through the ROP in at least
one well drilled from each drill site.
Rule 6 Reservoir Pressure Monitoring
a. A bottom -hole pressure survey shall be taken on each well prior to initial injection.
b. The operator shall obtain the pressure surveys needed to manage properly the hydrocarbon recovery
processes subject to the annual plan outlined in Rule 8, below. At a minimum, a pressure survey shall be
acquired from at least one well on each drill site each year.
c. The reservoir pressure datum will be -8,108 feet TVDss.
d. Pressure surveys may consist of stabilized static pressure measurements at bottom -hole or be extrapolated
from surface measurements (single phase fluid conditions), pressure fall -off measurements, pressure
buildup measurements, multi -rate test results, drill stem test results, and open -hole formation tests or other
methods approved by the AOGCC.
e. A Reservoir Pressure Report, Form 10-412, shall be utilized for all surveys; all relevant data shall be
attached to the report. The data submitted shall include, at a minimum, rate, pressure, depth, fluid gradient,
temperature, and all other well conditions necessary for a complete analysis of each survey being conducted.
f. The results and data from any special reservoir pressure monitoring tests or surveys shall also be submitted
in accordance with paragraph (e) of this rule.
Rule 7 Gas -Oil Ratio Exemption
Wells producing from the ROP are exempt from the GOR limits of 20 AAC 25.240(a) as long as CPAI is engaged
in enhanced recovery operations. An enhanced recovery operation must be initiated within 12 months of the
issuance of this order.
CO 793 Amended
August 10, 2021
Page 12 of 13
Rule 8 Annual Reservoir Review
a. An annual reservoir surveillance report must be filed by April 1" of each year and include future
development plans, reservoir depletion plans, and surveillance information for the prior calendar year,
including:
The voidage balance, by month, of produced fluids and injected fluids and the cumulative status
for each producing interval;
ii. A reservoir pressure map at datum, and a summary and analysis of the reservoir pressure surveys
within the pool;
iii. The results and, where appropriate, an analysis of production and injection log surveys, tracer
surveys, observation well surveys, and any other special monitoring;
iv. A review of pool production allocation factors and issues over the prior year;
V. A review of the progress of the enhanced recovery project; and
vi. A reservoir management summary, including results of any reservoir simulation studies.
Rule 9 Sustained Casing Pressure for Production Wells
a. At the time of installation or replacement, the operator shall conduct and document a pressure test of
tubulars and completion equipment in each production well that is sufficient to demonstrate that planned
well operations will not result in failure of well integrity, uncontrolled release of fluid or pressure, or threat
to human safety.
b. The operator shall monitor each production well daily to check for sustained pressure, except if prevented
by extreme weather conditions, emergency situations, or unavoidable circumstances. Monitoring results
shall be kept available for AOGCC inspections.
c. The operator shall notify the AOGCC within three working days after the operator identifies a well as
having: (i) sustained inner annulus pressure that exceeds 2,000 pounds per square in gauge (psig) for all
production wells, or (ii) sustained outer annulus pressure that exceeds 1,000 prig.
d. If the operator identifies sustained pressure in the inner annulus of a production well that exceeds 45 percent
of the burst pressure rating of the well's production casing for inner annulus pressure, or sustained pressure
in the outer annulus that exceeds 45 percent of the burst pressure rating of the well's surface casing for
outer annulus pressure, the operator shall notify the AOGCC within three working days and take corrective
action. Unless well conditions require the operator to take emergency corrective action before AOGCC
approval can be obtained, the operator shall submit in an Application for Sundry Approvals (Form 10-403)
a proposal for corrective action. The AOGCC may approve the operator's proposal or require other
corrective action, including a mechanical integrity test or other diagnostic tests. The operator shall give the
AOGCC sufficient notice of the testing schedule to allow the AOGCC to witness the tests.
e. Except as otherwise approved by the AOGCC under (d) of this rule, before a shut-in well is placed in
service, any annulus pressure must be relieved to a sufficient degree: (1) that the inner annulus pressure at
operating temperature will be below 2,000 prig, and (2) that the outer annulus pressure at operating
temperature will be below 1,000 prig.
CO 793A
August 10, 2021
Page 13 of 13
A well subject to (c) but not (d) of this rule may reach an annulus pressure at operating temperature that is
described in the operator's notification to the AOGCC under (c) of this rule, unless the AOGCC prescribes
a different limit.
f. For purposes of this rule,
i. "inner annulus" means the space in a well between tubing and production casing;
ii. "outer annulus" means the space in a well between production casing and surface casing; and
iii. "sustained pressure" means pressure that (A) is measurable at the casing head of an annulus, (B) is
not caused solely by temperature fluctuations, and (C) has not been applied intentionally.
Rule 10 Production Surface Commingling. Measurement and Allocation
a. Production from ROP may be commingled on the surface with production from other pools within the
GMTU and the CRU.
b. Wells must be tested at least monthly.
DONE at Anchorage, Alaska and dated August 10, 2021.
Jeremy Dlgaall elgnedby
le ey Price
Date 10r1.09.10
Price
13N):17-081W
Jeremy M. Price
Chair, Commissioner
Daniel DlgltaAy signed by
Dank)Seamount
Seamciunt °30ouiZoeroo0
Daniel T. Seamount, Jr.
Commissioner
As provided in AS 31.05.080(a), within 20 days after written notice of the entry of this order or decision, or such further time as
the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration of
the matter determined by it. If the notice was mailed, then the period of time shall be 23 days. An application for reconsideration
must set out the respect in which the order or decision is believed to be erroneous.
The AOGCC shall grant or refuse the application for reconsideration in whole or in part within 10 days after it is filed. Failure
to act on it within 10-days is a denial of reconsideration. If the AOGCC denies reconsideration, upon denial, this order or decision
and the denial of reconsideration are FINAL and may be appealed to superior court. The appeal MUST be filed within 33 days
after the date on which the AOGCC mails, OR 30 days if the AOGCC otherwise distributes, the order or decision denying
reconsideration, UNLESS the denial is by inaction, in which case the appeal MUST be filed within 40 days after the date on
which the application for reconsideration was filed.
Ifthe AOGCC grants anapplication for reconsideration, this order ordecision does not become fiinal. Rather, the order or decision
on reconsideration will be the FINAL order or decision of the AOGCC, and it may be appealed to superior court. That appeal
MUST be filed within 33 days after the date on which the AOGCC mails, OR 30 days if the AOGCC otherwise distributes, the
order or decision on reconsideration.
In computing a period of time above, the date of the event or default after which the designated period begins to run is not included
in the period; the last day of the period is included, unless it falls on a weekend or state holiday, in which event the period runs
until 5:00 p.m. on the next day that does not fall on a weekend or state holiday.
Salazar, Grace (CED)
From: Salazar, Grace ICED) <grace.salazar@alaska.gov>
Sent: Tuesday, August 10, 2021 2:20 PM
To: AOGCC Public Notices
Subject: [AOGCC_Public_Notices] AOGCC Amended Orders: Conservation Order No. 793 and
Area Injection Order No. 43
Attachments: CO 793A.pdf,, AIO 43A.pdf
In response to ConocoPhillips Alaska, Inc.'s reconsideration letter, the Alaska Oil and Gas Conservation Commission has
amended the following Orders:
Conservation Order 793 (attached)
Area Injection Order 43 (attached)
Respectfully,
M. Grace Salazar, Special Assistant
Alaska Oil and Gas Conservation Commission
333 West 71h Avenue
Anchorage, AK 99501
Direct: (907) 793-1221
Email: grace.salazar@alaska.gov
https://www.commerce.alaska.gov/web/aogcc/
List Name: AOGCC_Public_Notices@list.state.ak.us
You subscribed as: grace.salazar@alaska.gov
Unsubscribe at: http://list.state.ak.us/mailman/options/aogcc_Public_notices/grace.salazar%40alaska.gov
Bernie Karl Gordon Severson Richard Wagner
K&K Recycling Inc. 3201 Westmar Cir. P.O. Box 60868
P.O. Box 58055 Anchorage, AK 99508-4336 Fairbanks, AK 99706
Fairbanks, AK 99711
George Vaught, Jr. Darwin Waldsmith
P.O. Box 13557 P.O. Box 39309
Denver, CO 80201-3557 Ninilchik, AK 99639
INDEXES
THE STATE
°'ALASKA
GUV'I RKt)R MiKI. I)l N] i AV'l
August 10, 2021
Mr. Stephen Thatcher
Manager, WNS Development
North Slope Operations and Development
ConocoPhillips Alaska, Inc.
PO Box 100360
Anchorage, AK 99510
Alaska Oil and Gas
Conservation Commission
Re: Docket Numbers: CO-21-005 and AIO-21-004
Request for Reconsideration
Conservation Order No. 793 and Area Injection Order No. 43
Dear Mr. Tatcher:
333 West Seventh Avenue
Anchorage, Alaska 99501-3572
Main: 907.279.1433
Fax:907.276.7542
www.aogcc.alaska.gov
By letter dated July 29, 2021, ConocoPhillips Alaska, Inc. (CPAI) requested that the Alaska Oil and Gas
Conservation Commission (AOGCC) reconsider the recently issued orders referenced above covering
operations in the Rendezvous Oil Pool (ROP) in the Greater Moose's Tooth Unit and Bear Tooth Unit.
CPAI's request is granted in part.
The only rejected proposed change is CPAI's request to remove the requirement to commence enhanced
recovery operations withing 12 months of the issuance of the order and instead make the commencement
of enhanced recovery operations contingent on "good reservoir management practices." During the
hearing, CPAI testified that injection will simultaneously commence with production at facility startup.
Since the plan is to begin injection at startup and startup is anticipated to occur later this year, the AOGCC
sees no reason to make the change that CPAI has requested. Of course, if conditions change between now
and first oil the AOGCC will work with CPAI to revise this requirement if necessary.
As such, the AOGCC is rejecting CPAI's proposed change to Rule 7 of Conservation Order No. 793. As
stated earlier all other recommendations in CPAI's letter will be adopted and amended orders issued.
Sincerely,
Jeremy Price
Jeremy M. Price
Chair, Commissioner
Mr. Stephen Tatcher
August 10, 2021
Page 2 of 2
RECONSIDERATION AND APPEAL NOTICE
As provided in AS 31.05.080(a), within 20 days after written notice of the entry of this order or decision, or such further time as
the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration of
the matter determined by it. If the notice was mailed, then the period of time shall be 23 days. An application for reconsideration
must set out the respect in which the order or decision is believed to be erroneous.
The AOGCC shall grant or refuse the application for reconsideration in whole or in part within 10 days after it is filed. Failure
to act on it within 10-days is a denial of reconsideration. If the AOGCC denies reconsideration, upon denial, this order or decision
and the denial of reconsideration are FINAL and may be appealed to superior court. The appeal MUST be filed within 33 days
after the date on which the AOGCC mails, OR 30 days if the AOGCC otherwise distributes, the order or decision denying
reconsideration, UNLESS the denial is by inaction, in which case the appeal MUST be filed within 40 days after the date on
which the application for reconsideration was filed.
If the AOGCC grants an application for reconsideration, this order or decision does not become final. Rather, the order or decision
on reconsideration will be the FINAL order or decision of the AOGCC, and it may be appealed to superior court. That appeal
MUST be filed within 33 days after the date on which the AOGCC mails, OR 30 days if the AOGCC otherwise distributes, the
order or decision on reconsideration.
In computing a period of time above, the date of the event or default after which the designated period begins to our is not included
in the period; the last day of the period is included, unless it falls on a weekend or state holiday, in which event the period mns
until 5:00 p.m. on the next day that does not fall on a weekend or state holiday.
Stephen Thatcher
Manager, WNS Development
North Slope Development
ConocoPhillips Alaska, Inc.
P.O. Box 100360
Anchorage, AK 99510-0360
ConocoPhillips phone 907.263.4464
July 29, 2021 RECEIVED
�By Grace Salazar at 1:49 Pro, Aug 02, 2021
Alaska Oil and Gas Conservation Commission
333 W. 7th Ave #100
Anchorage, Alaska, 99501-3539
RE: Request for Reconsideration
Conservation Order No. 793, Rendezvous Oil Pool, North Slope, AK
Area Injection Order No. 43, Rendezvous Oil Pool, North Slope, AK
Dear Commissioners:
ConocoPhillips Alaska, Inc. ("CPAI") appreciates the Commission's timely issuance of the Rendezvous
Oil Pool ("ROP") Conservation Order ("CO") and Area Injection Order ("AIO"). CPAI respectfully requests
reconsideration of the following items:
• Findings 1 and 2 in the CO and AIO state that CPAI is the sole working interest owner and
operator of the oil and gas leases within the proposed Affected Area. CPAI is the sole working
interest owner in the Greater Moose's Tooth Unit ("GMTU"). However, the area added by the
Commission outside of the GMTU includes both unleased acreage and acreage owned by Oil
Search. Consequently, CPAI requests that Findings 1 and 2 of both the CO and AIO be revised to
the following:
Finding 1: Owners and Landowners: Surface owners of the ROP area are Kuukpik
Corporation and the Bureau of Land Management ("BLM"). Subsurface owners of the
ROP area are the Arctic Slope Regional Corporation and BLM. CPAI is the 100% working
interest owner of the leased acreage within the GMTU and Bear Tooth Unit ("BTU").
There are leases included in the ROP Affected Area that are currently unleased or owned
by other operators.
Finding 2: Operator: CPAI is the operator of the oil and gas leases within the GMTU and
BTU. There are leases included in the ROP Affected Area that are currently unleased or
operated by others.
• Finding 7 In both the CO and AIO incorrectly state that both a gas and water contact have been
directly encountered within the ROP. CPAI requests that Finding 7 be revised consistent with its
CO and AIO applications to the following:
o Finding 7: Reservoir Fluid Contacts: Only a gas -oil contact has been directly encountered
within the ROP. A water contact has not been encountered within the ROP. The gas -oil
contact is estimated to be at -8,108 It TVDss based on modular formation dynamics
testing (MDT) data obtained in the Rendezvous A and Rendezvous 3 wells. Altamura 1
established oil down to -8,450 it TVDss. None of the exploratory or development wells
Request for Reconsideration of Conservation Order No. 793 and Area Injection Order No. 43
Page 2 of 3
drilled within the CRU to the east or within the GMTU have encountered oil -water contact
in the Jurassic -aged reservoirs. (italicized language added)
Finding 14 of the CO and Finding 13 of the AID, Wellbore Construction. The Orders state
that "Surface casing will be set below the C-5 marker in the Colville Group and cemented to
surface" which is what was stated in CPAI's original applications. However, during testimony
CPAI presented revised information that the "Surface casing will be set below the K-3 marker in
the Nanushuk Group and cemented to surface". CPAI requests that Finding 14 of the CO and
Finding 13 of the AID be revised to provide:
o "Surface casing will beset below the K-3 marker in the Nanushuk Group." (italicized
language added)
• Page 8 of the CO incorrectly refers to the Lookout Oil Pool ("LOP"). CPAI requests the sentence
be revised to state the following:
o "Development and operation of the GMTU and BTU Rendezvous Oil Pool..." (italicized
language added).
• Conclusion 6 in the AID incorrectly refers to the LOP. CPAI requests the sentence be revised to
state the following:
o There are no freshwater aquifers in the Affected Area of the ROP. (italicized language
added).
CO Rule 6 requires that a gamma ray and resistivity curve be recorded from base of conductor to
total depth. This is a significant departure from regulation 20 AAC 25.071 which only requires that
a gamma ray or a resistivity log. Past pool rules have similarly only required gamma ray or
resistivity logs. See LOP CO 747 corrected July 24, 2018 Rule 5. Accordingly, CPAI requests that
Rule 5 be revised to be consistent with 20 AAC 25.071 and past conservation order decisions
allowing for gamma ray or resistivity logs. Although CPAI often runs both logs, some situations
only call for one log which results in cost savings with no practical loss in necessary information.
• CO Rule 7 requires that "An enhanced recovery operation must be initiated within 12 months of
the issuance of this order". CPAI requests reconsideration of the 12 month timeframe, and
requests that enhanced recovery operations be tied to good reservoir management practices and
operational feasibility. Consequently, CPAI requests the following revised language for Rule 7:
o Following sustained production from the ROP, to the extent operationally feasible, an
enhanced recovery operation will be initiated once good reservoir management practices
dictate the commencement of enhanced recovery operations.
• In both the CO and AID, the land description appears to be incomplete. Consistent with CPAI's
applications, CPAI requests the addition of the following lands inside the GMTU into the ROP in
both the CO and AID:
Township
Range
Sections _
T9N
R2E
32: All
Request for Reconsideration of Conservation. Order No. 793 and Area Injection Order No. 43
Page 3 of 3
Please contact Dana Glessner (265-6478, glessd@conocophillips.com) if you have questions or would
like to discuss this request for reconsideration.
Regards, /
t�„v``
Stephen Thatcher
Manager, WNS Development
North Slope Operations and Development
i
ConocoPhillips
May 27, 2021
Alaska Oil and Gas Conservation Commission
333 W. 7th Ave #100
Anchorage, Alaska, 99501-3539
Stephen Thatcher
Manager, WNS Development
North Slope Development
ConocoPhillips Alaska, Inc.
P.O. Box 100360
Anchorage, AK 99510-0360
phone 907.263.4464
RE: Supplement to Clarify Potential Expanded Pool Area For the Rendezvous Conservation Order and
Area Injection Order Applications
North Slope, AK
Dear Commissioners:
This letter is provided to clarify the scope of the Rendezvous Oil Pool (ROP) boundary if the Commission
elects to extend the ROP to lands not leased by ConocoPhillips Alaska, Inc. (CPAI) as suggested by
questions from the Commissioners at the hearing on May 25, 2021. As CPAI stated at the hearing, CPAI
does not object to the ROP boundary being extend to the south.
The legal description of the additional lands to the south is as follows:
ns
ll
F74:
N1/2
/2
ll
/2
T8N
R2E
8: NW1/4
27: NW1/4
28: W1/2, NE1/4
T9N
R2E
33: W1/2
Supplement to Rendezvous Conservation Order and Area Injection Order Applications
Page 2 of 3
this letter is a map
ool boundary expanded to the south. Please contact
Dana Glessnero(265Ishowing
6478, gle sQadco ocollphillips.com) ifyou have questions or would like to discuss
this request.
Regards,
!/ T"-L
Stephen Thatcher
Manager, WNS Development
North Slope Development
Supplement to Rendezvous Conservation Order and Area Injection Order Applications
Page 3 of 3
Attachment 1
Conoco
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,A Suspended WelkbillingWeill'alb\• I •ulnu.�:
• SrJ PIONFER1 B
GAITZ Well Plans
—GLITA Well Plans ' ■ __. W w Jesse.;
J Proposed Rendezvous Oil Pool - — • ° ''
Q Reservoir Boundary
• ul uuu oon
e;
® Kuukpik Surface ASK Subsurface
'"'a lino Boundary
Unleased -�.. .. , c .,
Industry Lease •. UAI � Teel• .� - *ul, WE. ma IJPR-A
Qa!' GPAI LLease.. .:.- _o' ••. lN■_E,U
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7
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— Road A ��A•as _ s ... -
AOGCC PUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHILLIPS AK, INC.
DocketNo. CO-21-005
ALASKA OIL AND GAS CONSERVATION COMMISSION
In the Matter of )
The application of ConocoPhillips )
Alaska, Inc., (CPAI) for order )
establishing pool rules and an area )
injection order for the proposed )
Rendezvous Oil Pool in the Greater )
Moose's Tooth Unit. !
Docket No. CO-21-005; AIO-
PUBLIC HEARING
May 25, 2021
10:00 a.m.
BEFORE: Jeremy Price, Chairman
Jessie Chmielowski, Commissioner
Daniel T. Seamount, Commissioner
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr., Ste. 2., Anch. AK 99501 Fax: 907-243-1473 Email. sahile@gci.net
AOGCC PUBLIC HEARING 5/25/2021 nMO: APPLICATION OF CONOCOPHILLIPS AK, INC.
DocketNo. CO-21-005
Page 2
1
TABLE OF CONTENTS
2
Opening remarks
by Chairman Price
3
03
3
Testimony
by
Ms.
Glessner
08
4
Testimony
by
Mr.
Timmerman
14
5
Testimony
by
Ms.
Anderson
28
6
Testimony
by
Mr.
Versteeg
29
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr., Ste. 2., Anch. AK 99501 Fax: 907-243-1473 Email: sahileQgci.net
AOGCCPUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHILLIPS AK; INC.
DoeketNo. CO-21-005
Page 3
1 P R O C E E D I N G S
2 (On record - 10:00 a.m.)
3 CHAIRMAN PRICE: Good morning, we're now on
4 record. It's approximately 10:00 a.m., Tuesday, May
5 25th, 2021. Today's hearing is being held by Cisco
6 WebEx telephonically and in person here at the AOGCC
7 offices located at 333 West Seventh Avenue, Anchorage,
8 Alaska. Due to technical reasons we are not using the
9 call in number that was provided in the original public
10 notice. A revised public notice with the correct call
11 in number was posted on the AOGCC website and was sent
12 out via email to those who subscribe to AOGCC public
13 notices listserve. For those on the phone, you can
14 press star six to unmute if you need to speak -- I'm
15 getting a little echo there -- for those on Cisco WebEx
16 video toggle over to the microphone icon to unmute.
17 Please be mindful of any background noise and make sure
18 you are muted when you're not testifying or addressing
19 the Commission.
20 Computer Matrix will be recording the hearing.
21 Upon completion and preparation of the transcripts,
22 persons desiring a copy will be able to obtain by
23 contacting Computer Matrix.
24 If you require any special accommodation,
25 please contact Grace Salazar sitting in the room with
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr., Ste. 2., Arch. AK 99501 Fax: 907-243-1473 Email: sahile0agei net
AOGCCPUBLICHEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHILLIPS AK, INC.
DocketNo. CO-21-005
Page 4
1 us. She can be reached at 793-1221. For those of you
2 who don't know, she is the new Jodie Columbie.
3 At this time I'll start introducing the bench.
4 To my left is Commissioner Dan Seamount and to my right
5 is Commissioner Jessie Chmielowski.
6 This is a public hearing on Docket No.'s CO-21-
7 005 and AIO-21-004. ConocoPhillips application for an
8 order establishing pool rules and an area injection
9 order for the proposed Rendezvous Oil Pool in the
10 Greater Moose's Tooth Unit.
11 This hearing is being held in accordance with
12 Alaska Statute 44.62 and 20 AAC 25.540 of the Alaska
13 Administrative Code. The notice of this hearing was
14 published in the Anchorage Daily News on April 16th,
15 2021. It was also posted on the state of Alaska online
16 notices website and the AOGCC's website. The AOGCC did
17 not receive any written comment on this matter prior to
18 this hearing. If there is anyone on the phone that
19 would like to make a public comment at the hearing
20 today, please make it known now. I believe the phones
21 are muted so if we can't hear you, try dialing star
22 six, and make it known if you'd like to make a public
23 comment at this hearing. Please let us know now-
24 (No comments)
25 CHAIRMAN PRICE: Hearing none. I'll ask
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr., Ste. 2, Anch. AK 99501 Fax: 907-243-1473 Email: sahile@gci.net
AOGCC PUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHILLIPS AK, INC.
DmketNo. CO-21-005
Page 5
1 Commissioner Seamount, any comments.
2 COMMISSIONER SEAMOUNT: I have none at this
3 time.
4 CHAIRMAN PRICE: Commissioner Chmielowski, any
5 comments.
6 COMMISSIONER CHMIELOWSKI: No. Thank you.
7 CHAIRMAN PRICE: Okay. Folks, are we going to
8 have all four of you testifying today. Okay. Can we
9 fist have you raise your right arms, right hands and
10 we'll swear you in.
11 (Oath administered)
12 IN UNISON: Yes.
13 CHAIRMAN PRICE: Okay. Let's put yourselves
14 all on the record for the record. Who are we going to
15 start with with the presentation?
16 MS. GLESSNER: Good morning. I'm Dana
17 Glessner. If we could go to Slide 2 for our
18 introductions is what I would like to start with.
19 CHAIRMAN PRICE: Sure. Okay. Go ahead to
20 Slide 2, Grace.
21 MS. GLESSNER: Okay. Good morning. I am Dana
22 Glessner. I am a production engineer with
23 ConocoPhillips Alaska. I have a bachelors of Petroleum
24 Engineering from West Virginia University. I have 20
25 years of industry experience. Previously worked for
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr, Ste. 2., Anch. AK 99501 Fax 907-243-1473 Email: sahile@gci.net
AOGCC PUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHILLIPS AK, INC.
DocketNo. CO-21-005
Page 6
1 Chevron in California and Alaska. And I've spent the
2 last 12 years with ConocoPhillips working Kuparuk and
3 Alpine fields on the Slope. And I wish to be accepted
4 as an expert witness in production engineering for
5 today's hearing.
6 CHAIRMAN PRICE: Understood. We'll recognize
7 that.
8 MR. TIMMERMAN: Good morning. My name's
9 Garrett Timmerman. I'm a development geologist with
10 ConocoPhillips Alaska. I have a bachelors in Science
11 from Michigan Technological University. Masters in
12 Science from the University of Montana. I've got 15
13 years of industry experience, one of those here working
14 the Alpine fields in Alaska. I wish to be recognized
15 as an expert witness in geology.
16 CHAIRMAN PRICE: Okay.
17 MS. ANDERSON: My name is Anderson. I have a
18 bachelors degree from the University of Missouri, Rolla
19 in Chemical Engineering. I have 22 years experience
20 with ConocoPhillips, primarily in the Alpine field. I
21 wish to be -- request to be a witness.
22 MR. VERSTEEG: Good morning. My name's Joe
23 Versteeg. I'm a reservoir engineer for ConocoPhillips.
24 I have a BS in Petroleum Engineering from the
25 University of Alaska -Fairbanks. I have 24 years of
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr., Ste. 2, Anch. AK 99501 Fax: 907-243-1473 Email: sahile@gci.net
AOGCC PUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHI LIPS AK-
INC.
Page 7
1 industry experience and 21 years in Alaska working
2 Prudhoe, Alpine and Kuparuk fields. And I'd like to be
3 acknowledged as an expert witness.
4 CHAIRMAN PRICE: Any questions for the
5 witnesses, any objections to the recognition of the
6 four witnesses to being expert?
7 COMMISSIONER SEAMOUNT: I have a question for
8 Ms. Glessner, and it has nothing to do with the outcome
9 of this hearing. But where did you work for Chevron in
10 California?
11 MS. GLESSNER: I worked in Bakersfield.
12 COMMISSIONER SEAMOUNT: Oh, so did I, eight
13 years.
14 MS. GLESSNER: Yep, Steam -- heavy oil,
15 steamflood, yep.
16 COMMISSIONER SEAMOUNT: Really tight well
17 spacing there.
18 MS. GLESSNER: Very small, tight, yes.
19 COMMISSIONER SEAMOUNT: I have no objections to
20 any of them.
21 COMMISSIONER CHMIELOWSKI: No questions. No
22 objections. Thanks.
23 CHAIRMAN PRICE: Folks, I will kind of
24 foreshadow this hearing. I think we -- after the
25 conclusion of the public presentation, we do expect at
Computer Matrix, LLC Phone: 907-243-0668
135 Christensen Dr., Ste. 2, Anch. AK 99501 Fax 907-243-1473 Email: sahileQgci.net
AOGCCPUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOP14ILLIPS AK, INC.
DocketNo. CO-21-005
Page 8
1 that point we may go into a confidential portion of the
2 hearing and we'll talk more at that point. But I
3 wanted to flag it for you, for that possibility at that
4 time, we would like one of you to kind of explain on
5 the record for the public why you'd like this
6 information that was submitted to be kept confidential,
7 to the extent that you can, without saying anything
8 that you shouldn't. So please be prepared for that at
9 the end of the public presentation.
10 Who would like to go first. Okay.
11 MS. GLESSNER: Good morning. This is Dana
12 Glessner again. I'm currently on Slide 3. First I
13 would like to thank the Commissioners today for helping
14 us establish these orders, so thank you for that. And
15 on Slide 3 I am showing our planned testimony and
16 outline of today's presentation. We would like to
17 cover, or will cover the conservation and area
18 injection orders together in this presentation. I will
19 mention on the geology side, we do have a non-
20 confidential overview in the main presentation and then
21 we are ready to show confidential at the end, so we do
22 have that section when we get there.
23 So first I'll move on to Slide No. 4 to talk
24 about the location and history. So over here on the
25 righthand of the slide I have a map of the Alpine field
Computer Matrix, LLC Phone: 907-243-0668
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AOGCC PUBLIC HEARING
5/25/2021 ITMO: APPLICATION OF CONOCOPHILLIPS AK, INC.
DocketNO. CO-21-005
Page 9
1 area and the orange dots indicate drill sites. The
2 brown lines are roads. The blue lines are outlining
3 the units. And the red dotted line indicates the NPR -A
4 boundary. The Rendezvous Pool is ConocoPhillips second
5 development in the Greater Moose's Tooth Unit and we
6 refer to the project as GMT2. It is 8 miles southwest
7 of GMT1, which is Lookout Oil Pool Like the existing
8 six drill sites at Alpine, GMT2 will use the existing
9 infrastructure and production will be routed back to
10 the Alpine Central Facility for final production
11 processing. One difference in the Greater Moose's
12 Tooth, for GMT2 and 1, we will measure production, oil
13 and gas, at the drill site for custody transfer
14 purposes before it leaves the unit and be -- before it
15 leaves the drill site. On the bottom lefthand slide I
16 have a brief history of the project. Exploration
17 seismic began from 1998 to 2000 with exploration
18 drilling following from 2000 through 2004. Most
19 notably to the GMT2 project, the Rendezvous 2 well was
20 drilled and flow tested in 2008, which confirmed the
21 oil discovery for the GMT2 project. In 2014 a second
22 exploration well, Rendezvous 3 was also drilled and
23 flow tested in the development area. From 2017 to 2020
24 Conoco worked to acquire, process and interpret new
25 seismic data. In 2018 GMT2 was internally sanctioned
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1 for execution by ConocoPhillips and we started our
2 first two construction seasons in 2019 and 2020
3 building roads, drill site, pipelines. And this year
4 we are working to finalize the installation of the
5 facilities and commission the pipelines. We do expect
6 first production and injection in the fourth quarter of
7 this year and we actually just did spud our first well
8 on April 27th.
9 Next I'll move on to Slide No. 5 to talk about
10 the ownership and pool boundary. ConocoPhillips is a
11 100 percent owner and operator of the Rendezvous Pool.
12 The surface owners are BLM and Kuukpik, both whom were
13 notified per the area injection order requirements.
14 The subsurface owners are the ASRC and BLM. And for
15 the proposed pool boundary, this is from our
16 application, that I have the map on the following
17 slide, that the proposed boundary is approximately one
18 full quarter section beyond the largest estimate of the
19 Alpine sand presence to ensure appropriate coverage of
20 the reservoir held by the GMT2 working interest owners.
21 And the pool boundary does terminate in the south and
22 southeast at the GMTU boundary and it does include
23 sections not currently held by the working interest
24 owners.
25 So next on to Slide 6. This is a map showing
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1 the proposed pool boundary. The lightly shaded purple
2 section, also outlined with a dark purple line indicate
3 the extent of the proposed pool boundary. The outline
4 of the reservoir is also a light purple line inside the
5 edge of the pool boundary. Here, again, orange dots
6 indicate drill sites. Brown is a road. Green indicate
7 pipelines. You can see the unit boundaries as the
8 dotted black lines. Bear Tooth Unit is on the west of
9 the Greater Moose's Tooth Unit and Colville River Unit
10 is on the east. You can also see exploration wells in
11 the area and also Lookout Development, which is to the
12 east of the pool. Our development wells are the
13 orange. You can see the well sticks in the southern
14 part here of the pool. The orange wells are our
15 initial planned 36 development -- 36 well development.
16 And then we have an additional 12 wells which are
17 extended reach drilling targets that are indicated by
18 brown here. And you will notice that our development
19 is focused in the southern area of the pool. This is
20 because Rendezvous does have a gas cap that is more
21 commonly known as Spark. And currently we are just
22 focused on oil rim development and production for GMT2
23 so that is why the wells are near the southern part of
24 the pool.
25 Okay, next on to Slide 7. Overview of the
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1 mechanical condition of the existing wells in the pool.
2 We do have nine wells that are plugged and abandoned
3 and there are two that are suspended. Of the two,
4 Rendezvous 3 is the only well that would be within one
5 fourth quarter mile of any development well.
6 COMMISSIONER CHMIELOWSKI: Ms. Glessner, what
7 is the status of Tinmiaq 6, Tinmiaq 15, and Fish Creek
8 Test 1? Those are on your map in the previous slide.
9 MS. GLESSNER: Tinmiaq 6 and 15 here on the
10 west and then Fish Creek Test 1. And, Garrett, please
11 correct me if I'm wrong. The Tinmiaq 6 and 15 wells do
12 not penetrate the pool.
13 MR. TIMMERMAN: Yeah, correct. Those are for
14 the Brooking targets and they don't go to the Jurassic.
15 COMMISSIONER CHMIELOWSKI: And are they
16 suspended?
17 MS. GLESSNER: I am not sure of that answer.
18 COMMISSIONER CHMIELOWSKI: Okay.
19 MS. GLESSNER: And then the Fish Creek Test 1
20 is actually a BLM well.
21 COMMISSIONER CHMIELOWSKI: Right, it was a
22 Legacy well. Was that plugged and abandoned recently?
23 MS. GLESSNER: I do not believe it was.
24 COMMISSIONER CHMIELOWSKI: No. So it's still
25 there?
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1 MS. GLESSNER: Yes.
2 CHAIRMAN PRICE: On the -- it looks like the
3 grey -- the grey color is your extended reach drill,
4 are you going to use extended reach on these grey
5 wells? I see they're on the -- kind of the outer edges
6 of the pool. I'm curious what rigs, drill rigs, you
7 anticipate using for drilling these wells if you are
8 aware at this time?
9 MS. GLESSNER: On just the extended reach
10 targets?
11 CHAIRMAN PRICE: All of them, but particularly
12 those.
13 MS. GLESSNER: Okay. For the first 36 well
14 program, the orange wells, we would be using Doyon 25
15 that is currently drilling at GMT2. And for the brown
16 extended reach targets that would be Doyon 26 is our
17 extended reach drilling rig.
18 CHAIRMAN PRICE: Thank you.
19 MS. GLESSNER: Okay. I will move on to Slide
20 8, which is showing our oil rim development plan in a
21 bit more detail. Our initial development plan is 36
22 wells. That includes 18 producers and 18 injectors.
23 And on this map, on the bottom part of the slide, is
24 the subsurface well pads of the wells shown. The blue
25 indicates injectors, green would be producers. The
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1 well names are also in blue and green along the bottom
2 of the well. And then the actual order of -- our
3 drilling order for the first 10 wells is shown in the
4 grey boxes. There is -- also there are three brown --
5 not brown, these are grey circles that show the three
6 exploration wells that are closest to our development.
7 We will use an enriched water alternating gas plug as
8 we do at other Alpine reservoirs to -- for enhanced
9 recovery. The horizontal lateral length in the
10 reservoir will range from 10 to 18,000 feet. The
11 northern wells will drill under the gas cap but they
12 are shorter due to the presence of the gas cap. And
13 the producers will also be hydraulically fractured and,
14 again, we won't be fracturing under or near the gas cap
15 as to avoid that.
16 MR. TIMMERMAN: All right, this is Garrett
17 Timmerman and I'll pick up at Slide 9 to give a
18 geologic overview.
19 Starting on the right side of the slide we have
20 a cross section or a -- excuse me, a stratigraphic
21 column of North Slope geology and our target is the
22 Alpine C sandstone for the Rendezvous pool. That's
23 highlighted on the strat column by the gold star. This
24 Alpine C sands sits on top of the regional extensive
25 Upper Jurassic unconformity, which has created local
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1 accommodation for the deposition of the Alpine C sand.
2 Below this we have a deep marine shale, the Kingak
3 formation, and above us we have an extensive sequence
4 of shales that include the Miluveach shale, the Kingak
5 shale -- or excuse me, the Miluveach shale, Kalubik
6 shale and the HRZ. The geologic setting of the Alpine
7 C sand, again, deposited on the regionally extensive
8 Upper Jurassic Unconformity that created local
9 accommodation for the deposition of the C sand. It is
10 interpreted to be a transgressive marine sand, so
11 middle to lower shoreface transgressive deposit. And
12 fine to very fine grain sandstone. Based on
13 ichnological analysis of trace fossils we've
14 interpreted it to be an open marine shallow environment
15 deposited in a -- kind of a restricted bay type
16 environment. Regarding the petroleum system, the trap
17 is a stratigraphic trap with the Kignak shale below us
18 and the Miluveach shale above us. And our charge is
19 the lower Kignak. Fluid is at 37.2 degree API gravity
20 and a .232 cP oil. We have a gas oil ratio of 1279 SCF
21 per barrel with a Bo 1.7. We do have, as Dana
22 mentioned a gas oil contact and that's at negative-8108
23 TFDss. In the next slide I'll show a structure of our
24 reservoir base, the Upper Jurassic Unconformity and
25 I'll highlight where that gas oil contact intersects or
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1 correlates with our development. We do just have the
2 gas oil contact, we have no known oil water contact in
3 this pool. We have oil down to the base of the
4 Altamura 1 well, which is five miles to the south of
5 our Rendezvous 2 and 3 wells, and that -- that based
6 listed on the bottom of this slide, the oil down to
7 8450 is the bottom of the Alpine C sand in the Altamura
8 1 well.
9 Moving to Slide 10. What I'm showing here is a
10 depth structure of our reservoir base, again, the Upper
11 Jurassic Unconformity. This contour map has a 10 foot
12 contour interval. And to highlight a couple features
13 on the map, a pool boundary -- our proposed pool
14 boundary is shown by the purple outline. Our largest
15 reservoir boundary extends, it is shown by the orange
16 polygon. And as you see I've got several exploration
17 wells shown in there, as well as our core 36 well
18 development shown by the black lines. Additionally
19 shown on this map in the solid black lines are the
20 faults we have been able to seismically identify. You
21 see we have two type -- or kind of two sequences of
22 faults, or groups of faults, if you will. One to the
23 north of our development, that strikes west/northwest,
24 east/southeast. These are normal down to the south
25 faults with five to 35 feet of throw. The fault
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1 grouping on the east side of the development striking
2 north/northwest to south/south -- excuse me,
3 north/northeast to south/southwest are normal faults as
4 well. They have throw both to the west and to the east
5 and those have estimated offsets of 30 to 50 feet.
6 Both of those sets of throws on both sets of faults are
7 less than the estimated sand thickness at their
8 position so we don't estimate any kind of isolation due
9 to the faults themselves. Talking about the structural
10 dip, again, 10 foot contours so that looking north to
11 south we've got about one degree of structural dip to
12 the south/southeast with local variances from zero to
13 two degrees, depending on the density of those
14 contours. So a relatively gradual southward dip.
15 Another thing I'll highlight is the gas oil contact
16 position. Again, at negative-8108, if you look at
17 Rendezvous A right where the R is you can see the 8,000
18 foot contour goes through that. And then if we go
19 south two contours that'll be negative-8100 feet
20 contour which is good representation of that gas oil
21 contact presence, or -- or position, excuse me. As you
22 can see that contour wraps around the northern tip of
23 our development wells and that is by design as we would
24 drill these wells underneath the gas cap and terminate
25 before we intercept a gas column.
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1 COMMISSIONER CHMIELOWSKI: One quick question
2 regarding the faults. So you expect that they are non-
3 ceiling faults, is that correct?
4 MR. TIMMERMAN: That is our expectation, yeah.
5 COMMISSIONER CHMIELOWSKI: Okay.
6 MR. TIMMERMAN: Yeah. And then tracing them up
7 through the package they appear to die in the Miluveach
8 shale above us and the Kignak shale below us.
9 COMMISSIONER CHMIELOWSKI: Thank you.
10 MR. TIMMERMAN: Moving to Slide 11. We'll move
11 from kind of that aerial depth domain to look at a type
12 well. This is the Rendezvous 2 well. It's kind of
13 right in the core of our development area and it's kind
14 of the type well that I will refer to throughout this
15 presentation today. What I've zoomed in here on is the
16 Alpine C sandstone. Highlighted in that log, so,
17 again, to go through this log, it's a triple combo log.
18 Gamma Ray on the left, resistivity is shown in the
19 central column and then neutron density and sonic on
20 the right. Additionally, I've shown core points,
21 permeability in the middle with porosity on the right
22 column to show where we have core coverage.
23 Stratographically we have the Kignak shale below us,
24 and then the Upper Jurassic Unconformity is shown by
25 that green line. As you can see it's a sharp erosive
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1 surface and then grating into that transgressive
2 sandstone, again, a massive fine, a very fine grain
3 sandstone, extensively bioturbated. We see minor
4 influences that you can pick out in the Gamma Ray.
5 Those are interpreted to be variable glauconite
6 content, not actual like shale intervals that we can
7 correlate across the pool, but just variable glauconite
8 content within the pool. We would like both the Alpine
9 C and Alpine D to be considered for the pool because
10 the gradation between the Alpine C and D is a
11 transgressive sequence and it's more of a local or an
12 operating distinction between where the C ends and the
13 D begins versus a lithologic distinction as you can see
14 in the log, that that's kind of a gradational sequence.
15 But on the top of the Alpine C we do transgress into
16 the Miluveach shale. We've got about 600 feet of
17 Miluveach shale around us at this point. Some average
18 sand properties, Alpine C sand properties are shown on
19 this slide. Average porosity is about 15 percent
20 ranging from 12 to 22 percent. Permeability average is
21 .64 mD, ranging from .09 to 4.57 mD with a water
22 saturation of averaging .49 with a range of 30 to 80
23 percent.
24 COMMISSIONER SEAMOUNT: Are there trends in the
25 porosity going across the accumulation or is it kind of
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2 MR. TIMMERMAN: That's a great question. There
3 are. There's two trends. One that's hard to make out
4 with the logs shown here but there's an upward
5 degradation reservoir quality so we see better
6 reservoir quality or better porosity at the base that
7 degrades upward through the deposit. And then to the
8 south using that Altamura 1 well as our one point to
g the south, we see a southern reservoir degradation as
10 well.
11 COMMISSIONER SEAMOUNT: Okay. So laterally the
12 reservoir gets better to the north?
13 MR. TIMMERMAN: Correct, yeah.
14 COMMISSIONER SEAMOUNT: And you'll probably get
15 into this but is this continuous one sand throughout
16 that entire huge area in.....
17 MR. TIMMERMAN: That's our -- yes, that's our
18 interpretation.
19 COMMISSIONER SEAMOUNT: .....in communication?
20 MR. TIMMERMAN: Yes.
21 COMMISSIONER SEAMOUNT: Wow. Okay. Thank
22 you.
23 MR. TIMMERMAN: Yeah.
24 COMMISSIONER CHMIELOWSKI: Excuse me. How do
25 the sand properties in Rendezvous compare to, say, the
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1 Alpine oil pool?
2 MR. TIMMERMAN: That's a good question. They
3 tend to be a little tighter out here. So a little bit
4 lower permeability and a little bit lower porosity as
5 well.
6 So if we go to Slide 12, Commissioner Seamount,
7 I'll answer a bit of your question on the regional
8 extent here. So what I'm showing here on Slide 12 is a
9 cross section that goes from the north of the pool up
10 in our -- excuse me, hard to read on the slide, but
11 from the Spark 4 well down south through the Carbon 1
12 well. For Rendezvous A -- so Rendezvous 2 all the way
13 down to Altamura so a cross section all the way from
14 north to south. What you can see in the Spark 4 and
15 the Carbon 1 well is a thinner Alpine C sand sequence.
16 And this is kind of a -- relates to there is a
17 depositional interpretation break between what we term
18 the Rendezvous accumulation and the Spark accumulation.
19 The Spark accumulation tends to be a bit thinner
20 interpreted to be on a kind of a shelf, if you will, on
21 the Upper Jurassic Unconformity whereas the Rendezvous
22 tends to be considerably thicker. You can see over 100
23 feet of Alpine C sand thickness there. This is, again,
24 when you look at kind of the Gamma Ray characters we
25 see no internal definition or things that we can
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1 correlate and when we look at core it is extensively
2 bioturbated so if there were depositional transgressive
3 sequences we could map that bioturbation, as completely
4 erase them.
5 To kind of maybe circle back to your question,
6 Commissioner Seamount, north to south we do tend to get
7 better rock quality to the north, up in Spark and then
8 the Rendezvous A and 2 area. And then we see a
9 degradation down to the south and Altamura.
10 Going to Slide 13 to take kind more of a pulled
11 out approach to the Alpine in regards to injection
12 containment. What I'm showing here is, again, a triple
13 combo log from the Rendezvous 2 well but at a smaller
14 scale to highlight the underlying Kignak shale below
15 us. We are estimating to have approximately 1,700
16 Kignak shale below us. This is estimated from, or
17 extrapolated from the West Fish Creek 1 well. As you
18 can see the Rendezvous 2 well terminated in the Kignak
19 shale so we don't know the true depth but extrapolating
20 from seismic isopaks we think it's about 1,700 feet
21 thick here. Above us we have, again, the Miluveach
22 shale, Kalubik, and HRZ. The Miluveach shale in this
23 area tends to be five to 600 feet thick with about 100
24 to 150 feet thick of Kalubik and HRZ shale as well. So
25 with these deep marine shales these are kind of a --
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1 play into our containment story very similar to the
2 containment story at Alpine and GMT1. And as we go to
3 the west here out into NPR -A, the Miluveach shale has
4 actually increased in thickness for us. In Alpine main
5 field the Miluveach is a bit thinner, two to 300 feet
6 thick. Where here we're at five to 600 feet thick.
7 MS. GLESSNER: Okay, this is Dana Glessner
8 again. I'm on Slide 14 just continuing to talk about
9 injection containment. As far as Rendezvous goes we
10 are requesting the same rule as the Alpine and Lookout
11 oil pools already do have for allowable injection
12 gradient of -- maximum allowable injection gradient of
13 .81 psi per foot. As Garrett mentioned we have the
14 same overburden and underburden combining intervals
15 that we have at Alpine and Lookout. And the analog
16 Alpine historical performance does indicate that we
17 have contained the injected fluids in the pools. At
18 the maximum facility discharge pressure, I did want to
19 point out, and I will -- I have two figures below that
20 I will talk about some more. The injection gradients
21 do remain below the .81 psi per foot. And our modeling
22 that we have done also indicates that injected fluids
23 will be contained in the Rendezvous pool interval. The
24 table I'm showing, labeled injection pressures here, is
25 just to point out our maximum facility discharge
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1 pressure on seawater and gas. For seawater it's 2,850
2 psi and for gas it is 4,200 psi. And what the expected
3 injection pressure at bottomhole would be based on
4 those facility discharge pressures. So at seawater we
5 would expect to be almost 6,500, which correlates to a
6 gradient of .78 and for gas we expect to be just over
7 5,000 which correlates to a .63 gradient. So those are
8 our maximum discharge pressures and what we would
9 expect to see downhole. And on the bottom of the slide
10 I am showing one example of modeling that we did. We
11 used an industry software called GOPHER to model our
12 fractures and we've used that model and incorporating
13 the well data from the exploration wells to simulate
14 water injection. And so on the left here is a Gamma
15 Ray examp -- showing a Gamma Ray from one of the
16 exploration wells and measure depth on the right and
17 perforations here indicated by these black dots. And
18 what I wanted to show with this model, we injected
19 water into the model until we were able to achieve a
20 .82 psi per foot at bottomhole pressure and we did
21 initiate a fracture in the pool, which is shown by this
22 purple color here. So that is what we expected. But I
23 did want to show the .82 one of the models that we did
24 run, that even above the .81 that we were still
25 contained within the pool so we feel that the .81 is
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1 appropriate to also be applied to Rendezvous.
2 COMMISSIONER CHMIELOWSKI: Do you plan to
3 inject produced water into the reservoir or just
4 seawater?
5 MS. GLESSNER: Currently we are planning to
6 start with seawater injection.
7 COMMISSIONER CHMIELOWSKI: Okay. And what
8 would be the discharged pressure of produced water
9 should you move over to that injection scenario?
10 MS. GLESSNER: So the discharge pressure would
11 be the same. It would just be a bit of a heavier
12 fluid. So at -- at the same depth, with the same
13 discharge pressure with produced water, the gradient is
14 actually .80 because the produced water is heavier.
15 COMMISSIONER CHMIELOWSKI: Thank you.
16 MS. GLESSNER: Yes.
17 MR. TIMMERMAN: All right, Garrett Timmerman
18 here again. Going to Slide 15. Take a look at water
19 we have in the region in terms of water salinity. In
20 terms of fresh water or whether there exists to be any
21 fresh water. Looking at wells both within Rendezvous
22 pool and regionally, we have identified no fresh water
23 variant intervals. That being defined as a sand with
24 less than 10,000 parts per million salinity. What I'm
25 showing again is the Rendezvous 2 type log. And you
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1 see on the left portion of this slide various
2 calculated salinities of each of those sands. You'll
3 note in the C-40 and C-30 we're using an off set well,
4 the Mitre 1, Plugback 1, because the sands in the
5 Rendezvous 2 have no calculated porosity in order to be
6 able to calculate that salinity. I'll mention again
7 we've done this analysis, not only for the core wells
8 in the Rendezvous pool, but across the GMT2 area and
9 have consistent results for the sands. So have not
10 identified any fresh water intervals.
11 COMMISSIONER SEAMOUNT: Is this area part of
12 the area -wide aquifer exemption that EPA established a
13 long time ago?
14 MR. TIMMERMAN: I do not know that.
15 COMMISSIONER SEAMOUNT: Okay.
16 MR. TIMMERMAN: Yeah, so I guess based on this,
17 we'd like to request in our -- based on this finding
18 that no fresh water aquifers are present in this area.
19 Focusing in now on the shallower zone, on Slide 16, I'd
20 like to talk a bit about a proposed annular disposal
21 interval. This slide is showing the log section of
22 Rendezvous A to Rendezvous 2. Focusing in now kind of
23 on the narrow -- or excuse me, the upper stratigraphy,
24 what we have above us is the Colville group highlighted
25 on the right by that green box. This would include CB
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1 formation, which is typically weakly consolidated clays
2 with some interbedded siltstone and mudstones. Below
3 that is the K3, which is part of the Nanushuk Group
4 that's highlighted by the pink stratigraphic top that
5 cuts across there. And then below the K3 out here in
6 the Rendezvous area we go directly in the Torok Group,
7 which is kind of those -- that albein sequence of shelf
8 to marine slope type deposits. Looking for an area --
9 a proposed area of annular disposal, we're considering
10 the K3, or proposing using the K3 sand. That sand can
11 be seen by looking at that K3 marker, and then it's
12 that first sand that you see about 50 feet below that
13 K3 marker. This is different than the interval we're
14 currently using in Alpine. The interval we're
15 currently using in Alpine is the C30 that you see at
16 the top of the slide but because the stratigraphy and
17 the surface section dips to the east, that C30 is
18 stratigraphically, or depositionally higher here and
19 very close to the permafrost base. So in Alpine where
20 we're using it there it's quite a bit deeper, here it's
21 considerably shallower and much closer to the
22 permafrost so we don't think it's a viable zone to use
23 for that. And because of that we're considering that
24 deeper K3 interval. We are planning to set our surface
25 casings right below the K3 marker in that shale -- in
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1 the K3 shale. To talk more about annual disposal I'll
2 pass it to Nina Anderson.
3 MS. ANDERSON: So we'll be using a similar
4 method that we have used currently at CD5 or previously
5 at CD5 and GMT6 for submitting a sundry application for
6 approval for annual disposal. Once a well out here has
7 been drilled and completed and handed over to
8 production, we will review that data and consider it a
9 possibility for a candidate for annual disposal and
10 then we will submit the appropriate sundry application
11 at that point.
12 COMMISSIONER CHMIELOWSKI: Would the annual
13 disposal be used just during drilling operations?
14 MS. ANDERSON: Yes. It would be just used
15 during drilling operations for wells that are drilled
16 specifically on that drill site.
17 COMMISSIONER CHMIELOWSKI: Thank you.
18 CHAIRMAN PRICE: If there's no questions on
19 this slide I'd like to go back one slide actually and
20 ask somewhat of a loaded question. On the -- you know,
21 a few years ago, before my time, there was a revision
22 to hydraulic fraction regulations here and there was a
23 little bit of pushback from industry, here you've got
24 somewhat low permeabilities, you're going to have to do
25 quite a bit of hydraulic fracturing. There's no
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1 aquifers in this area. So I'm curious if -- what is --
2 how can you characterize, if you can, any hurdles or, T
3 guess characterize how difficult the current
4 regulations are when it comes to the process for
5 getting approval for hydraulic fracturing when there's
6 no aquifers present? Can anybody comment on that?
7 (No comments)
8 CHAIRMAN PRICE: I guess I'm asking is it
9 overly burdensome?
10 MS. GLESSNER: I am not specifically involved
11 with that but it seems to be the same as any other
12 permit or sundry process that we would have to do.
13 CHAIRMAN PRICE: Okay, thanks. Any other
14 thoughts or comments on that or was that it?
15 (No comments)
16 CHAIRMAN PRICE: Okay.
17 MR. VERSTEEG: So this is Joe Versteeg moving
18 on to Slide No. 17. Talk a little bit about the fluid
19 properties and the volumes, some of the reservoir
20 parameters. So the initial pressure for Rendezvous is
21 3800 psi and you can see from our tvd study that the
22 bubble point pressure is very close to that so we have
23 a saturated reservoir. And these properties are
24 derived from the black oil tvd study done in the
25 Rendezvous 3 appraisal well. The reservoir temperature
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1 is 207 degrees. As Garrett mentioned earlier some of
2 the properties, the oil formation volume factor's
3 relatively high at 1.7 and that couples with that high
4 solution GOR of 1279. Very favorable oil viscosity for
5 water fluid, we're expecting a very efficient flood
6 because of the, you know, the very low oil viscosity so
7 that works in our favor for the secondary recovery.
8 Gas formation volume factor of .8, so .8 reservoir
9 barrels per thousand cubic feet of gas. Moving on to
10 the volumes, we have a range for the oil in place of
11 300 to 460 million barrels. Primary recover -- and
12 that 20 percent number is very much an estimate but, of
13 course, is included in the full EUR(ph) numbers but if
14 you apply that estimate, expect to recover between 60
15 to 92 million barrels just on primary. If you consider
16 the benefits of both the water flood and the enriched
17 gas flood, I think the range number recovery could be
18 between 35 to 60 percent, which equates to 105 to 276
19 million barrels recovery. For the original gas in
20 place, as was mentioned before, we do have a GOC in the
21 gas cap, the estimate is 1.7 to 2.8 TCF in place and
22 our estimate of the yield based on some data we have
23 for the wells in that area is 30 to 60 barrels per
24 million cubic feet of gas.
25 COMMISSIONER SEAMOUNT: Mr. Versteeg, what do
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1 you figure the life of the production to be? How many
2 years?
3 MR. VERSTEEG: We're expecting it out to 2050
4 or so, I mean so a long life. It's a low permeability
5 reservoir, as was mentioned before, so, you know,
6 expect some nice initial peak rates but then it should
7 be kind of a low through -put stable flood that goes out
8 in time. So we expect a long life on it.
9 COMMISSIONER SEAMOUNT: It'll be a long time
10 before you can sell at 2 TCF gas, uh?
11 MR. VERSTEEG: Well, we are looking at
12 development plans for that but we just -- the details
13 haven't matured yet to where we're really able to
14 discuss that publicly yet so.
15 COMMISSIONER SEAMOUNT: Understood.
16 MR. VERSTEEG: So over on Slide 18. As was
17 mentioned earlier, so the strategy here is to go with
18 the alternating enriched gas water flood and with the
19 ultimate goal of optimizing the recovery in the
20 reservoir and that's how we could achieve that upper
21 end of the recovery is with enriched gas flood. To the
22 question before, yes, we would expect to be using
23 either seawater, or produced water. We will start --
24 or the plan is to start on seawater and then eventually
25 switch over to produced water. And then after we
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1 inject water for a period of time we'll start the
2 enriched gas slugs alternating with the water, again,
3 to get that first year recovery and make sure that we
4 optimize the recovery and the full volume.
5 So we're -- as was mentioned earlier, we're
6 really targeting the oil rim for this development and
7 we're really -- the development is planned to, or
8 designed to minimize gas coning and to manage the GOR
9 so the approach on this is to -- in the northern row
10 where we will potentially be underneath the gas cap we
11 will maximize our offset, our vertical offset from the
12 GOC. And then, of course, with your injection strategy
13 that will also help -- we'll target to replace all our
14 voidage and have a injection withdrawal ratio of one
15 which should also help with any concerns about gas.
16 COMMISSIONER CHMIELOWSKI: A question. Will
17 you begin production before an injector is in place or
18 will you wait until you have injection before you begin
19 production?
20 MR. VERSTEEG: There will be -- we'll have to
21 have -- at least, in the plan, we'll have to have a
22 couple injectors on to start the facility. So not
23 necessarily all the patterns around all the producers,
24 there may be sides of the producers that will not have
25 an injector drilled but we will simultaneously start up
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1 injection and production. But it will not necessarily
2 mean that every pattern will have full support
3 initially.
4 COMMISSIONER CHMIELOWSKI: So it's for facility
5 reasons, not reservoir reasons that you would do it
6 them at the same time?
7 MR. VERSTEEG: Yes. It's to.....
8 COMMISSIONER CHMIELOWSKI: Right.
9 MR. VERSTEEG: .....start it up, yes.
10 COMMISSIONER CHMIELOWSKI: Okay. And how long
11 do you think you'll wait until you begin gas injection?
12 MR. VERSTEEG: Ideally six months to 12 months
13 is what we -- we want to get a good slug of water in
14 before we start the gas injection so we'd definitely
15 look to start at least some gas injection within a year
16 so.
17 COMMISSIONER CHMIELOWSKI: Okay, thank you.
18 MR. VERSTEEG: So on Slide 19. Just an
19 overview of what we expect on our peak rates. From an
20 oil production standpoint we have a range of 20 to
21 45,000 barrels a day and the cap on the -- the peak
22 production, the 45,000 barrels a day is related to the
23 fact that we have an on site production separator. So
24 that's an estimate of what we think we can get through
25 that. We may exceed that 45 but that's what provides
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1 that constraint. The gas correlates, peak gas kind of
2 correlates with the peak oil, you know, with the GOR
3 numbers. As was discussed earlier, we're expecting
4 this to be a pretty slow flood so a slow ramp up in
5 water production, maybe hitting a peak of 40,000
6 barrels a day, but not expecting a lot of water up
7 front. From the injection side, peak rates expect in
8 the range of 20 to 50,000 barrels of water per day.
9 And then for the enriched gas, between 20 to 70 million
10 CF gas per day.
11 COMMISSIONER SEAMOUNT: Why is your estimated
12 peak production so much lower than Alpine's was? I
13 think Alpine got to 100,000 a day, right?
14 MR. VERSTEEG: Yes. Part of the reason is
15 because of that separator limit. We think if we
16 weren't constrained by that separator limit we could
17 potentially exceed the 45,000. Also we are in a lower
18 perm environment here so compared to Alpine, so we are
19 expecting some, maybe early flush rates, but should
20 stabilize out to a lower rate. So as you're kind of
21 compounding out your time, you decline off pretty
22 rapidly and you're bringing on additional wells so it
23 may not give you the same peak that you achieved at
24 Alpine.
25 COMMISSIONER SEAMOUNT: Okay.
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1 CHAIRMAN PRICE: How long do you think you
2 could maintain production at those levels? I know you
3 said you thought all the way out to 2050 you would be
4 producing from the field, but how -- at that -- do you
5 anticipate kind of how long you could stay within that
6 20 to 45 per day?
7 MR. VERSTEEG: Yeah, these are just estimates
8 of peak rates so, you know, we would expect that we
9 would decline out as we go out in time off the peaks.
10 So, yeah, this -- the 20,000 is really just a low end
11 of the peak rate we would expect to see during that
12 life.
13 MS. ANDERSON: Okay, Nina Anderson here.
14 Starting on Page 20. I will give an overview of the
15 drilling plan. As Dana alluded to in the earlier side,
16 8, I believe, we have a program for 36 horizontal
17 wells, 18 producers and 18 injectors of varying
18 production and lateral lengths. As you can see from
19 the map on the right the layout is similar to our
20 directionally drilled wells at both CD5 and MT6 and
21 previous drill sites. We'll be using a similar
22 drilling program with known drilling fluids, using
23 known directional tools and ARVHA's (ph). All the
24 wells will be supported by existing Alpine
25 infrastructure. The key focus out here is really
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1 maintaining our hole conditions and our well bore
2 stability. There is some concern as we have thickening
3 shales. So we have the HRZ, the Kalubik, and the
4 Miluveach shales and to combat that, and to mitigate
5 the risk out here we have three design variances that
6 we have built into our program. The 3-string design.
7 The 4-string design conventional, which breaks our
8 intermediate into two sections. And then our 4-string
9 pipe conveyed system. And I'll get into more detail in
10 the upcoming slides. That is the same method that we
11 used at GMT1 or MT6. In addition to the well design
12 we'll also be using managed pressure drilling out here
13 to help with our pressure stabilization during
14 connections to maintain a constant bottomhole pressure
15 and reduce the pressure cycling across the shales.
16 The next slide. So moving on to Slide No. 21.
17 This shows the well construction for our 3-string
18 design. This is kind of our standard 3-string design
19 that has been implemented at Alpine. Starting with a
20 42 inch hole, 20 inch insulated conductor. We will
21 drill with an inhibited spud mud down into the K-3
22 where we will TD. 13-3/8ths casing will be run and
23 cemented to surface. At that point we'll install test
24 our BOPE, provide notification to the State per all
25 regulations. The intermediate hole section here will
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1 be an under ringed hole section, 9-7/8ths x 11 inch
2 hole. WE'll be using our inhibited LSND mud system,
3 and then running 7-5/8th inch casing and cementing that
4 shoe per all the AOGCC requirements to maintain that we
5 have cement coverage above any existing hydrocarbon
6 bering zones. Cement quality logs, sonic logs will be
7 run on all injectors and all planned frac producers out
8 here. And then moving on to our lateral we will have a
9 6.5 inch hole that will be drilled steered through the
10 reservoir. We'll be using a combination of mineral oil
11 based mud and water based mud as we drill this hole
12 section. A 4.5 inch liner will be on producers. All
13 of our injectors out here will be barefoot completions,
14 open hole with run one tubing and lower completion
15 design. Our TDs do vary from about 22,000 to 36,000
16 feet out in this area. Our completion is a liner top
17 packer which will be set above the Alpine C and within
18 that confining zone. We'll be running producers, gas
19 lift and we'll have permanent downhole pressure gauges
20 installed for reservoir monitoring. We will be
21 fracture stimulating the producers. There is a
22 difference in that northern row. Those producers will
23 have a very short liner and we're looking at about four
24 swell packers and frac ports. And the southern well --
25 southern row we'll be running full length laterals to
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1 TD with about 20 frac stages and 20 swell packers.
2 Wellhead standard, big bore vertical well tree out
3 here. We will have a 10,000 foot tree put on for the
4 fracture stimulation, and then following up with our
5 5,000 pound tree.
6 CHAIRMAN PRICE: You mentioned you anticipated
7 issues with hole stability, sluffing, any other issues
8 that you could see arising here?
9 MS. ANDERSON: With our -- that was our --
10 that's kind of one of our primary concerns out in this
11 area and that was where a lot of our focus was. A lot
12 of the other zones are similar and similar problems and
13 risks that we mitigate through our standard drilling
14 practices.
15 CHAIRMAN PRICE: Why is hole stability such a
16 problem out here, is there something different than the
17 rest of the fields that you work in up here?
18 MS. ANDERSON: I can speak to that, Garret can
19 probably speak a little better.
20 MR. TIMMERMAN: Yeah, it's just that the
21 thickness of the shale package, it's so -- so thick and
22 predominant and it -- it's at angle as well. So even
23 our, kind of closest wells were at a, you know, 45
24 degree shale angle and then turning to horizontal
25 within that shale package and it just kind of creates a
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1 mechanical problem for us.
2 MS. ANDERSON: And then as I move into the 4-
3 string I will point out that kind of the driving factor
4 for determining which design that we do select of those
5 three design variance is dependent on kind of that
6 shale thickness that Garrett mentioned and the location
7 of our HRZ slump blocks. And then also the extended
8 reach of our wells. Some of them we have intermediate
9 casing shoes out to 17,000 feet. So as we look at that
10 design, we consider which of the three designs we feel
11 most comfortable with proposing for that area.
12 So moving on to Slide 22. Here, the well
13 construction for the 4-string design. The difference
14 on this well is that our intermediate section is broken
15 into two strings. Intermediate 1 will be a 12-1/4 inch
16 hole, very similar mud system from the 3-string design.
17 But we will be TD'ing into the top 100 feet measure
18 depth of the HRZ. Then running a 9-5/8ths casing,
19 which will be run back to surface, and that shoe will
20 be cemented per all requirements. Then for that second
21 intermediate, we'll be drilling that shorter section
22 down into our reservoir with a 8.5 inch hole and then
23 running 7.5 inch liner. Now, on some of the wells
24 where we have a more challenging shale package to drill
25 through or an extended reach with a high deviated angle
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1 we will be looking at steerable drilling liner, the
2 technology, which we have proved in the past at MT6.
3 Then, yeah, as I pointed out the lateral and the
4 completion are all very similar to the 3-string design.
5 CHAIRMAN PRICE: Do you anticipate any requests
6 for variance from regulations with these various
7 construction designs?
8 MS. ANDERSON: At this point, no, we do not
9 have any waiver specific to the drilling design plan or
10 variances that we will be requesting.
11 MS. GLESSNER: Okay, this is Dana Glessner
12 again. I'm on Slide 23, switching topics a bit, to
13 facilities and metering. The GMT2 production
14 measurement and allocation system was previously
15 approved by the AOGCC through Other Order 148 in
16 December of 2018. GMT2, like GMT1 will have both a
17 test and production separator on site. The production
18 will be metered after 3-phase separation on the drill
19 site before it is transported and commingled with GMT2
20 and the other CRU pools at the Alpine Central Facility.
21 Our wells will be tested monthly and production will be
22 allocated back to individual wells from test. And on
23 September 24th, 2020 we submitted our application to
24 the AOGCC per the Industry Guidance Bulletin, 13-002
25 for the GMT2 final measurement approval for the fiscal
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1 allocation metering system. And on the bottom of the
2 slide, just briefly talking about water and gas for the
3 pool injection will be sourced from the Alpine Central
4 Facility as is customary with our other drill sites but
5 here at GMT2 -- or GMTU, gas sent from CRU to GMT2 will
6 be measured before it leaves the CRU. And then gas and
7 water injection at GMT2 will be measured at each
8 individual injector.
9 And I will move on to Slide 24, which is my
10 last slide of the non -confidential section, just to
11 talk about fluid compatibility. We do expect
12 Rendezvous production to be fully compatible with
13 Lookout and the other CRU pools. The compositions are
14 similar to Lookout and Alpine so we do expect full
15 compatibility with the produced fluids and then the
16 Rendezvous water production is also expected to be
17 completely compatible as an injection fluid at GMT2 and
18 CRU.
19 And that is our last slide.
20 COMMISSIONER CHMIELOWSKI: I have a quick
21 question. So producing GMT2, 1 and 2 -- GMT2 into the
22 Alpine Central Facility will backout other oil
23 production; is that correct?
24 MS. GLESSNER: Yes.
25 COMMISSIONER CHMIELOWSKI: And is there any
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1 long-term impact to ultimate recovery in other oil
2 pools?
3 MS. GLESSNER: Joe, would you be able to handle
4 that one for me, thank you.
5 MR. VERSTEEG: Yes, you're correct that there
6 will be some back out in our portfolio. Most of the
7 near term backout is actually, we're expecting to be on
8 pad backout so -- because of that limit on the 45,000
9 barrel a day, so it would come in less than that and
10 there would be less. But in the term our forecasts are
11 really not showing as much backout on the early wells.
12 And it just depends on how long the field life goes,
13 but, yes, we would expect that you recover all that
14 with your payback period. So it's really a function of
15 end of field life, right, so.
16 COMMISSIONER CHMIELOWSKI: Thank you.
17 CHAIRMAN PRICE: I have a question on your
18 field development. I know the changing economics
19 changes the timeline for things, but do you have an
20 anticipated timeline of when all 36 wells will be
21 drilled and developed?
22 MS. GLESSNER: The initial 36 wells drilling
23 extends through the end of 2024?
24 CHAIRMAN PRICE: Thank you. Any other
25 questions, Commissioners.
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1 (No comments)
2 CHAIRMAN PRICE: At this time we're going to
3 take a five minute break before we get into the
4 confidential portion.
5 (Off record)
6 (Confidential)
7 (On record)
8 CHAIRMAN PRICE: Okay, folks we are back in the
9 public portion of this hearing. This is Jeremy Price
10 with AOGCC. We do have a couple of follow-up public
11 questions for you as well.
12 Commissioner.
13 COMMISSIONER CHMIELOWSKI: Thanks. I'm going
14 to refer to Slide 11, it has to do with Rendezvous
15 properties. And you discussed earlier the porosity and
16 permeability estimates and ranges for the Rendezvous
17 oil pool and mentioned that they were lower than for
18 the Alpine oil pool. My question is, will injecting
19 produced water or seawater into this reservoir with
20 lower permeability cause any issues with fluid
21 compatibility and potentially cause the recovery to be
22 lower in this oil pool?
23 MR. VERSTEEG: The expectation on water
24 injection is that we will be able to inject above
25 parting pressure and we have multiple analogs to
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1 demonstrate, in other fields, that as long as we're
2 able to inject above parting pressure that we can
3 inject sufficiently with produced water or seawater.
4 So that's just from a historical perspective.
5 COMMISSIONER CHMIELOWSKI: So no concerns about
6 the reservoir quality being slightly lower in this oil
7 pool?
8 MR. VERSTEEG: Well, it is a -- certainly it is
9 a concern, I mean it is lower perm but that's the way
10 we think we will be able to address it is by injecting
11 above parting pressure.
12 COMMISSIONER CHMIELOWSKI: Okay, thank you.
13 CHAIRMAN PRICE: Any other questions for this
14 public portion before we close out?
15 (No comments)
16 CHAIRMAN PRICE: I'm not seeing a need, unless
17 I'm missing something, we don't need to extend the --
18 to hold open the record, I think we're good to close it
19 today.
20 MS. GLESSNER: Yes, we would be.
21 CHAIRMAN PRICE: Okay. Then at this time we'll
22 adjourn. The time is 11:55.
23 (Off record)
24 (END OF PROCEEDINGS)
25
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TRANSCRIBER'S CERTIFICATE
I, Salena A. Hile, hereby certify that the
foregoing pages numbered 02 through 45 are a true,
accurate, and complete transcript of proceedings in
Docket No. CO-21-005; AIO-21-004, transcribed under my
direction from a copy of an electronic sound recording
to the best of our knowledge and ability.
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lk
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
May 25, 2021 at 10:00 am
CO-21-005 & AIO-21-004
NAME
Dana Glesser
AFFILIATION Testify (yes or no)
ConocoPhillips
Patrick D, Doherty
ConocoPhillips
Kevin Donley
ConocoPhillips
Tyndall Ellis
ConocoPhillips
Stephen Tatcher (Cisco)
ConocoPhillips
Patrick Doherty
ConocoPhillips
Andy Bond
Oil Search
C%Gfrch MQ(
coK, Co R.C S
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ConocoPhillips
Rendezvous Pool Hearing
Conservation and Area Injection Orders
May 25, 2021
Ms. Dana Glessner
• ConocoPhillips Alaska, Inc
• Production Engineer
• BS Petroleum Engineering, West Virginia
University
• 20 years industry experience, 12 years in
Alaska working Kuparuk and Alpine fields
• Expert Witness: Production Engineering
Ms. Nina Anderson
• ConocoPhillips Alaska, Inc
• Drilling Engineer
• BS Chemical Engineering, University of
Missouri - Rolla
• 22 years industry experience in Alaska
working Kuparuk and Alpine fields
• Expert Witness: Drilling Engineering
Mr. Garrett Timmerman
• ConocoPhillips Alaska, Inc
• Development Geologist
• BS Geology, Michigan Technological University
• MS Geology, University of Montana
• 15 years industry experience, 1 year in Alaska
working Alpine fields
• Expert Witness: Geology
Mr. Joe Versteeg
• ConocoPhillips Alaska, Inc
• Reservoir Engineer
• BS Petroleum Engineering, University of Alaska -
Fairbanks
• 24 years industry experience, 21 years in Alaska
working Kuparuk, Prudhoe, and Alpine fields
• Expert Witness: Reservoir Engineering
1. Project Overview (Dana Glessner)
• Location and History
• Ownership and Pool boundary
• Mechanical Condition of Existing wells in Pool
• Oil Rim Development plan
2. Geology (Garrett Timmerman and Dana Glessner)
• Geologic Overview
• Reservoir Structure
• Pool Interval
• Injection Containment
• Shallow Interval Salinity
• Proposed Annular Disposal Interval
3. Reservoir (Joe Versteeg)
• Fluid properties, OOIP and Resource recovery
• Reservoir Management
• Production and Injection Rates
4. Well Construction (Nina Anderson)
• Drilling plan
• Well Construction and Integrity
5. Production (Dana Glessner)
• Facilities and Metering
• Fluid compatibility
6. Confidential Section (Garrett Timmerman)
• Alpine C Seismic and Isochore Interpretation
ConocoPhillips
• Rendezvous is the Pool
• GMT2 is second development in Greater
,.f
C0=
Moose's Tooth Unit
NATIONAL PETROLEUM
Colville
RESERVE-ALASKA
River
Unit
• 8 miles SW of GMT1(Lookout)�G-�'
,-,].
Bee/
Tooth
�CD2 CD1,F.LPINE
• Utilize existing Alpine infrastructure
Unit
ccs 1
`
CD:
History:
GMTt
Greater
\ %,
• 1998-2000: NPR -A Exploration 3D Seismic
Moose$
• 2000-2004: Exploration drilling
Tooth Unit
• 2008: Rendezvous 2 drilled & flow tested
c
• 2014: Rendezvous 3 drilled & flow tested
GMT2
• 2017-2020 : Development 3D Seismic
acquisition, processing and interpretation
t,•�'
• 2018: GMT2 Sanctioned by ConocoPhillips
.•""
• 2019-2020: 15Y two construction seasons
•
�:
202 Final installation of facilities and pipelines
°•'•--r,�
• First production and injection startup
N
expected in Q4
• �•.a. �..,.,
• First well spud on April 27th
Working Interest Owner:
100% ConocoPhillips (Operator)
Surface Owners:
BLM
Kuukpik
Subsurface Owners:
ASK
BLM
Proposed Pool Boundary:
• Approximately one full quarter section beyond the largest estimate of Alpine sand
presence to ensure appropriate coverage of the reservoir held by the GMTU WIO. The
Pool boundary terminates in the south and southeast at the GMTU boundary and
excludes sections not currently held by the GMTU WIO.
ConocoPhillips
ConocoPhillips
"'j
GMT 2 men a
Rendezvous Oil Pool WITO I
Development Plan SPARK
fU
5112021 ZE 1. .2
ME 7, a-
w PH Il
K0Ui Colville
T11N. UW�� T11N.RjE.UM NOOSES 16
I T); 'T Z N R3E 'm River
Tlft.�.UM 7 0
1w um T ON RIF W T10N 83 Unit
T"
MWAG, M
;
Greater Cr �T I
r(�HKM07 1, Mousesw —Tooth Unit —
O
a ANOD4
9 &i Bear
Tooth Unit
)3'1oNXKQ 2
T1M R,VVI
TION. F 1W UM T90N,RIE. I %\\Hew-
i Wum Is IM0 6801610
+ P&AWells
C Suspended Wells
Existing Well Path a\; -i_
a
GMT2 Weil Plans PIONEER 4 FF
GMT2X Well Plans
O i a
Proposed Rendervous Oil Pool -- ---- 1.,101.10111
Reservoir Boundary A
Kuukpik Surface ASRC Subsurface .........
F.
H'. � Unit Boundary Z
Unleased +ALTANU
Industry Lease um fM
j/:� TEN' R E.UM TM RxF UN,
171 CPAI Lease N W FIE UKI E TON R E.Ukl NPR -A
■
Pad
Pipeline ngxuo Is
Road
Conocoi
• Plugged & Abandoned
• Altamura 1
• Carbon 1
• Moose's Tooth C
• Rendezvous 2
• Rendezvous A
• Spark DD-9
• Spark 1
• Spark 1A
• Spark 4
• Suspended
• Rendezvous 3
• Scout 1
• Well count: 18 producers, 18 injectors
• Enriched water alternating gas (EWAG) flood
• Horizontal lateral length in reservoir will range from 10,000'—18,000'
• Northern wells will drill under gas cap
• Producers will be hydraulically fractured
• No hydraulic fracturing under or near gas cap
Location:
• NPR -A — Greater Moose's Tooth Unit
Geo Setting:
Upper Jurassic Alpine C sand deposited in accommodation
resulting from Upper Jurassic Unconformity (UJU) incision
• Fine to very fine-grained sandstone
• Open Marine, Lower Shoreface (near storm wave base)
deposition
• Transgressive Deposit
Trap:
• Stratigraphic — Miluveach Shale above/ Kingak Shale below
Charge:
• Lower Kingak sourced oil
Fluids:
• 37.20API gravity, 0.232 cP oil
• GOR 1279 SCF/STB, Bo 1.7
• GOC -8108' TVDss (MDT Rendezvous A and Rendezvous 3)
• ODT -8450' TVDss (Altamura 1)
w
aZ
Y W
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cc N
Sw NE
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Z so ✓ J,, y.'�
w
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O
96
Nanush !�
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W
ono ,
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144
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Q
No
Kingak Fm
zo
Shublik Fm. F
TRIASSIC
s---
Z
Qw
wOZZ PERMIAN
�w
w0 PENNSYLVANIAN
W
w
� N
W
Usbume Gp.
- Alpine C SS
* - Primary Source (Kingak)
ConomPhil 1ps
Depth Map of the Upper Jurassic Uncontormity (UJU), Keservolr rsase
......... ......n. ... umv 1 M 10M ,vAWO 147M
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Fault
•
Exploration Well
i
S
Development Well
ERD Development Well
Reservoir Boundary
/
Proposed Pool Boundary
50' Contour Interval
Depth NDss, feet
Proposed vertical limits for the
Rendezvous Oil Pool
U
o
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aim
C
exso
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a
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aiso
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Alpine C Sand Properties in
Rendezvous 2:
• Porosity: Avg. 15.6%, Range 12-22%
• Permeability: Avg. 0.64 mD, Range 0.09-4.57 mD
• Water Saturation: Avg. 0.49, Range 30-80%
� Upper Jurassic
�,�'fj Unconformity
ConocophiUips
Well Section showing log character of the Alpine interval through the Rendezvous Pool
RI..wh
South
i
- GR ssn9 Mp PESD
:%i'^sy. ;qE ......•
'Vp[55
NMI 53
• �a..rs
3 mi
�R Ssn^J IM RESD
LwY ...s
Rf$S
a.7
NPNI 44
�.r..0
pR08
mi
A TAMUkA , s
G¢ 'E`er_��
_ ...ge_cc.
S=_
.. _Rn06
flMOB
�Drc
•
b
e
D.c
f
!{
7<
FCS_KRZ
FCS
Kalubik
lAluveach
Alpine (
Alpine—(
U11
The Alpine sand interval (M) is
contained above and below by
extensive deep marine shales.
Very thick and competent shale
section above the Alpine (thicker
than typical in CRU area)
TApproximately 1700' of Kingak shale
lies below the Alpine Interval (as
observed in the W Fish Creek 1 well)
Conocophillips
Injection Containment continued
Sea Water I Gas
14
Rendezvous Area Type Log —Shallow Salinity Analysis Summary
CPAI requests a finding in the
Orders that no freshwater
aquifers are present in the
Rendezvous area.
Permafrost
ilville Group (Clay with
terbedded silt & minor
nds)
anushuk Group (K-3 to Albian
i; top sets, shallow marine,
Its/shales and thin fine-
'ained sands
orok (Albian slope & deep
narine shales with inter-
,edded sands)
CS Fill
ARZ/Kalubik/Miluveach Shales
alpine C Sandstone (Target)
ConocoPhillips
Permafrost
base at
—1,000' TVDss
Surface
Casing
M.
Alb
Alb
Alb
Alb
Colville Group: Weakly
consolidated, silty,
medium gray claystone
with some siltstone
lenses.
Nanushuk Group:
Shallow marine deltaic
sediments, like Colville,
but more lithified.
Torok Group: Series of
slope to deep marine
sediments forming
clinoforms. Mainly
marine shale with
interbedded turbiditic
sands.
Reservoir Fluid Properties (8140 feet TVDss in Rendezvous 3)
Property Units Measured Value
Initial Reservoir Pressure, psia
3802
Reservoir Temperature, OF
207
Saturation Pressure, psia
3815
Oil formation volume factor, RVB/STBO
1.7
Oil Density, °API
37.2
Oil Viscosity, cp
0.232
Gas formation volume factor, RVB/MCF
0.8
Gas oil ratio, SCF/BBL
1279
In Place and Recoverable Resource Volumes (Pre Development)
Hydrocarbon Resource Estimated Volumes
Original Oil in Place, OOIP 300 to 460 MMSTB
Primary Recovery (Er = 20% of OOIP) 60 to 92 MMSTB
Primary+ EWAG Recovery (Er = 35-60% of OOIP) 105 to 276 MMSTB
Original Gas in Place, OGIP 1.7 to 2.8 TCF
Yield Range 30 to 60 BBL/MMSCF
ConocoPhillips
Enriched Water Alternating Gas (EWAG) flood
Seawater or Produced Water
Enriched Gas
Oil rim only development is designed to minimize gas coning
and manage the GOR
Gas cap production will be minimized by maintaining offset with
producers, including fracture stimulation offset
Injection/Withdraw ratio of 1.0 will be targeted
ConocoP lips
• Peak Annual Rates
Production
Oil (MBOPD) 20-45
Gas (MMCFPD) 25-100
Water (MBWPD) 5-40
Lift Gas (MMCFPD) 10-25
Injection
Water (MBWIPD) 20-50
Gas (MMCFPD) 20-70
ConocoPhillips
36 horizontal wells
• 18 Producers
• 18Injectors
• Similar drilling program and well design as CD5
Key Focus Areas:
• Wellbore stability - directional drilling
through HRZ, Kalubik and Miluveach shales
• Mix of well casing designs anticipated
• 3-string (Similar to CD5)
• 4-string (Conventional Intl)
• 4-string (Pipe Conveyed Intl — GMT1)
• Managed Pressure Drilling (MPD)
n•, rzac
S'WO ft.
• 20" Insulated conductor w/ thermo-siphon
• Surface:
• 16" Hole
• Inhibited Spud Mud
• TD into the K-3
13-3/8" Casing & Cement to Surface
Install and test BOPE with notice to State
• Intermediate:
• 9-7/8" x 11" Hole
• LSND Mud
• 7-5/8" Casing
• Cement Shoe per AOGCC requirements
• Run cement quality log
at Lateral
• 6.5" Hole
• Mineral Oil Based or Water Based mud
• 4-%2" Liner on producers, Openhole for injectors
• TO — 22,000' to 36,000' MD
• Completion
Liner top packer set above Alpine C within confining zone
Gas lifted producers w/ permanent downhole pressure
gauges
Fracture stimulation producers (sleeves —700 ft apart w/
swell packers)
Wellheads with vertical tree (10K frac tree, then SK prod
tree)
Top Abm.c
2P 14 pP1 n.ao m W IaeE
Co .u.
at.* CNl 01. W1A'e
q-L!• W. LAW mcAU1
Y,1Ka Geq M02.115'M
N4'12.ln1,41DW 353
ooMgl. G> .
Plo O. P,ver
Tup.10l Lnw WRolM.n '
11 4 •A- LlMlq nlppb O 813 IC:
21 a'Aa "GLM 12 11,
31HSDl W(e GaP;e
al4-%'1A O1 PaN
51 Lt4' LfMmp Moplf U N
616ne1T1q pxditl Nenp.TW Tx'Tp Baer seae
VP lna Tov Pa .' 4Y,- 1L68 L40 NydM3L Vwl axeG
gtlln i1aWMCOb 7 ID pone fe11Q 26Wp'M
LStl• A.211312• Ldp TIP 1K CY O4
UNT1IU
hpgt,p�.dC�
ConocoPhillips
• 20" Insulated conductor w/ thermo-siphon
Surface:
• 16" Hole
• Inhibited Spud Mud
• TD `3,650' to 4,115' MD (K-3)
• 13-3/8" Casing & Cement to Surface
• Install and test BOPE
• Intermediate 1:
• 12 Y." Hole
• LSND Mud
• TO into the HRZ
• 9-5/8" Casing
• Cement Shoe perAOGCC requirements
• Intermediate 2:
• 8-Y." Hole
• LSND Mud
• 7" Liner (some with Steerable Drilling System)
• TO into the Alpine C
• Cement Shoe per AOGCC requirements
• Run cement quality log
• Lateral
• 6.5" Hole
• Mineral Oil Based or Water Based mud
• 4-Y." Liner on producers, Openhole for injectors
• TD — 22,000' to 36,000'
]P 7! ppl HJO MUIpIpO
eo 4w ..•.n<ro w>a
iWOp Carotrm
11 •�X' lanOYq NW4 i l d!J' O�
JI s.•4. r C,LY
�1 PrpO,men N
Sh'•(lanGYq MOip 04 IS )!' NOG",
eir« xa
it OPa
I1U- 0 ppt Lao WC1 W
Y
Svlaw Cavnp
bIR' Id 6001 L 40 Wry 3
5 54- U 5 pN Ld011,M
T-PA0.wc
P W'
&V 12"Li Np056]I ,.1.0
pwoI
• Completion
Liner top packer set above Alpine Cwithin confiningzone r�`Pand"
14H
Gas lifted producers w/ permanent downhole pressure gauges
Fracture stimulation producers (sleeves ^700 ft apart w/ swell
packers)
Wellheads with vertical tree (10K frac tree, then SK prod tree)
"w m
GMT2 production measurement and allocation system was approved by AOGCC
through Other Order 148 on 12/19/2018
GMT2, like GMT1, will have both a test separator and production separator on -site
Production metered after 3-phase separation on the drillsite before transport and commingling with
GMT1 and the other CRU Pools
Wells will be tested monthly, production will be allocated back to individual wells from well tests
On 9/24/2020 an application was submitted to AOGCC per Industry Guidance Bulletin 13-002
for GMT2 final measurement approval for the fiscal allocation metering system
Water and gas for Pool injection sourced from Alpine Central Facility
Gas sent from CRU to GMTU will be measured before leaving CRU
Gas and water injection at GMT2 will also be measured at each individual injector
Ak conocoPhinips
Rendezvous production is expected to be fully
compatible with Lookout and other CRU Pools from
both a production processing and injection
perspective.
➢ Rendezvous production compositions are expected to be similar to the Lookout and
Alpine Pools and fully compatible with all CRU pools
➢ Rendezvous is a close analog to the Alpine Pool because both pools share a similar
geologic history with the same oil charge source (Lower Kingak) and comparable
structural and depositional schemes.
➢ Rendezvous water production will be a mixture of Rendezvous connate water and
seawater or ACF produced water and it is not expected to be significantly different
than Lookout and Alpine Oil Pools produced water and therefore should be fully
compatible with all GMTU and CRU pools.
➢ Application of scale inhibitors, corrosion inhibitors and any other production
treatments at Rendezvous will be similar to those at Lookout and other CRU pools
ConocoPhillips
Notice of Public Hearing
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
Re: Docket Numbers: CO-21-005 And AIO-21-004
The application of ConocoPhillips Alaska, Inc. (CPAI) for order establishing pool rules
and an area injection order for the proposed Rendezvous Oil Pool in the Greater Moose's
Tooth Unit.
CPAI, by letter dated April 12, 2021, requests the Alaska Oil and Gas Conservation Commission
(AOGCC) issue orders establishing pool rules and an area injection order Rendezvous Oil Pool in
the Greater Moose's Tooth Unit on the North Slope of Alaska.
The AOGCC has scheduled a public hearing on this application for May 25, 2021, at 10:00 a.m.
at 333 West 7' Avenue, Anchorage, Alaska 99501.
If interested party wishes to participate at the hearing telephonically, they should call 1-800-315-
6338 and, when instructed to do so, enter the code 14331. Because the hearing will start at 10:00
a.m., the phone lines will be available starting at 9:45 a.m. Depending on call volume, those calling
in may need to make repeated attempts before getting through.
In addition, written comments regarding this application may be submitted to the AOGCC, at 333
West 71 Avenue, Anchorage, Alaska 99501. Comments must be received no later than the
conclusion of the May 25, 2021 hearing.
If, because of a disability, special accommodations may be needed to comment or attend the
hearing, contact the AOGCC's Special Assistant, Grace Salazar at (907) 793-1221, no later than
May 21, 2021.
Jeremy Jeemy M. Ntally eed
Date:2021D4.16
M. Price 14. 9S2-0"D
Jeremy M. Price
Chair, Commissioner
Please note to those participating telephonically, the call -in number has changed to:
1-650-479-3207 or toll -free at 1-855-244-8681
Access Code: 1779999214#
Notice of Public Hearing Attendee ID/password: 76498367#
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
Re: Docket Numbers: CO-21-005 And AIO-21-004
The application of ConocoPhillips Alaska, Inc. (CPAI) for order establishing pool rules
and an area injection order for the proposed Rendezvous Oil Pool in the Greater Moose's
Tooth Unit.
CPAI, by letter dated April 12, 2021, requests the Alaska Oil and Gas Conservation Commission
(AOGCC) issue orders establishing pool rules and an area injection order Rendezvous Oil Pool in
the Greater Moose's Tooth Unit on the North Slope of Alaska.
The AOGCC has scheduled a public hearing on this application for May 25, 2021, at 10:00 a.m.
at 333 West 72h Avenue, Anchorage, Alaska 99501.
If interested party wishes to participate at the hearing telephonically, they should call 1-800-315-
6338 and, when instructed to do so, enter the code 14331. Because the hearing will start at 10:00
a.m., the phone lines will be available starting at 9:45 a.m. Depending on call volume, those calling
in may need to make repeated attempts before getting through.
In addition, written comments regarding this application may be submitted to the AOGCC, at 333
West 711 Avenue, Anchorage, Alaska 99501. Comments must be received no later than the
conclusion of the May 25, 2021 hearing.
If, because of a disability, special accommodations may be needed to comment or attend the
hearing, contact the AOGCC's Special Assistant, Grace Salazar at (907) 793-1221, no later than
May 21, 2021.
Jeremy Digitally signed by
Jeremy M. Ptice
Date: 2021.04.16
M. Price 14. g:51 08-00-
Jeremy M. Price
Chair, Commissioner
Notice of Public
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
Re: Docket Numbers: CO-21-005 And AIO-21-004
The application of ConocoPhillips Alaska, Inc. (CPAQ for order
establishing pool rules and an area injection order for the proposed
Rendezvous Oil Pool in the Greater Moose's Tooth Unit.
CPAI, by letter dated April 12, 2021, requests the Alaska Oil and
Gas Conservation Commission (AGGCC) Issue orders establishing
pool rules and an area injection order Rendezvous Oil Pool in the
Greater Moose's Tooth Unit on the North Slope of Alaska.
The AOGCC has scheduled a public hearing on this application for
May 25, 2021, at 10:00 a.m.. at 333 West 7th Avenue, Anchorage,
Alaska 99501.
If interested partvwishes to participate at the hearing telephonically,
they should calif 1-800-315-6338 and, when instructed to do So,
enter the code 14331. Because the hearing will start at 10:00 a.m.,
the phone lines will be available starting at 9:45 a.m. Depending on
call volume, those calling in may need to make repeated attempts
before getting through.
In addition, written comments regarding this application may be
submitted to the AOGCC, at 333 West 7th Avenue, Anchorage,
Alaska 99501, Comments must be received no later than the
conclusion of the May 25, 2021 hearing.
If, because of a disability, special accommodations may be needed
to comment or attend the hearing, contact the AOGCC's Special
Assistant, Grace Salazar at (907) 793-1221, no later than May 21,
2021.
file//
Pub: April 18, 2021
STATE OF ALASKA
ADVERTISING
ORDER
NOTICE TO PUBLISHER
SUBMIT
(DAVIT FSHOWING PUBLICADVERTISINGORDERNO.,CERTIFIED
AFFIDAVIT OF PUBLICATION WITR ATTACKED COPY OF
ADVERTISMENT.
ADVERTISING ORDER NUMBER
1 p
AO-08-21-019
FROM:
Alaska Oil and Gas Conservation Commission
AGENCY CONTACT:
Jody Colombie/Samantha Carlisle
DATE OF A.O. AGENCY PHONE:
4/16/2021 907) 279-1433
333 West 7th Avenue
Anchorage, Alaska 99501
DATES ADVERTISEMENT REQUIRED:
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COMPANY CONTACT NAME:
PHONE NUMBER:
ASAP
FAX NUMBER:
907 276-7542
TO PUBLISHER:
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SPECIAL INSTRUCTIONS:
PO Box 140147
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TYPE OF ADVERTISEMENT: 1J LEGAL j— DISPLAY r CLASSIFIED OTHER (Specify below)
DESCRIPTION
PRICE
CO-21-005 and AIO-21-004
Initials of who prepared AO: Alaska Non -Taxable 92-600185
st.0an.. ..... es iowav >aiav a si vc:
ORDER ISIO:;CERYRTRDAF.EiDAVYI''tfK;:::
:piluiiCw?oHwiTH:AlydtxE"BCOIrY:OP:
AOGCC
333 West 7th Avenue
Anchorage, Alaska 99501
Page I of 1
Total of
All Pa es $
REF
Type
Number
Amount
Date
Comments
I
PvN
VCO21795
z
Ao
AO-08-21-019
3
4
FIN
AMOUNT
SY
Act. Template
PGM
LGR
Object
FV
DIST
LIQ
I
21
AOGCC
3046
21
2
3
4
Pit An T
Purchasing Authority's Signature
Telephone Number
A.O. # and receiving agency name must appear on all invoices and documents relating to this purchase.
state is registered for tax free transactions under Chapter 32, IRS code. Registration rmmber 92-73-0006 K. Items are for the exclusive use of the state and not far
111STRI
.... o...... a .... 1pr)�aa1: 0 ... Palrh.... (i..... AlwsFodFiacgl, Recsiviag
Form:02-901
Revised: 4/19/2021
ANCHORAGE DAILY NEWS
AFFIDAVIT OF PUBLICATION
Account #: 100869 ST OF AK/AK OIL AND GAS CONSERVATION COMMISSION
333 W. 7TH AVE STE 100, ANCHORAGE, AK 99501
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THIRD JUDICIAL DISTRICT
Lisi Misa being first duly sworn on oath deposes
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said newspaper has been approved by the Third
Judicial Court, Anchorage, Alaska, and it now
and has been published in the English language
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Alaska, and it is now and during all said time
was printed in an office maintained at the afore-
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and that such newspaper was regularly distrib-
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That the full amount of the fee charged for the
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Signed
Subscribed and sworn to before me
this 19th day of April 2021.
TOWPublic
inaJ
e State of AJaske
Third Division
Anchorage, Alaska
MY COM�vII� I(,)ilN�)E�XPIRES
Cost: $219.16 RECEIVE®
APR Z 1 2021
AOGCC
Notice of Public Hearing
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION
Re: Docket Numbers: CO-21-005 And AIO-21-004
The application of ConocoPhillips Alaska, Inc. (CPAI) for order
establishing pool rules and an area injection order for the proposed
Rendezvous Oil Pool in the Greater Moose's Tooth Unit.
CPAI, by letter dated April 12, 2021, requests the Alaska Oil and
Gas Conservation Commission (AOGCC) issue orders establishing
pool rules and an area injection order Rendezvous oil Pool in the
Greater Moose's Tooth Unit on the North Slope of Alaska.
The AOGCC has scheduled a public hearing on this application for
May 25, 2021, at 10:00 a.m. at 333 West 7th Avenue, Anchorage,
Alaska 99501.
If interested partywishestoparticipateatthehearingtelephonically,
they should cal( 1-800-315-6338 and, when instructed to do so,
enter the code 14331. Because the hearing will start at 10:00 a.m.,
the phone lines will be available starting at 9:45 a.m. Depending on
call volume, those calling in may need to make repeated attempts
before getting through.
In addition, written comments regarding this application may be
submitted to the AOGCC, at 333 West 7th Avenue, Anchorage,
Alaska 99501. Comments must be received no later than the
conclusion of the May 25, 2021 hearing.
if, because of a disability, special accommodations may be needed
to comment or attend the hearing, contact the AOGCC's Special
Assistant, Grace Salazar at (907) 793-1221, no later than May 21,
2021.
//signature on file//
Jeremy M. Price
Chair, Commissioner
Pub: April 18, 2021
v.. it-1r�Y uBLIC^
JADA L. NOWLING
STATE OF ALASKA
liny
:_xr.:nrR .hdv 14, 2024
Colombie, Jody J (CED)
From: Colombie, Jody J (CED) <jody.colombie@alaska.gov>
Sent: Friday, April 16, 2021 2:14 PM
To: AOGCC Public Notices
Subject: [AOGCC_Public Notices] Public Hearing Notice - CPA
Attachments: Rendezvous Pool Rules and AIO Public -Hearing notice.pdf
Re: Docket Numbers: CO-21-005 And AIO-21-004
The application of ConocoPhillips Alaska, Inc. (CPAI) for order establishing pool rules and an area injection order
for the proposed Rendezvous Oil Pool in the Greater Moose's Tooth Unit.
Jody J. Colombie
AOGCC Special Assistant
Alaska Oil and Gas Conservation Commission
State of Alaska
333 West 7`6 Avenue
Anchorage, AK 99501
Phone Number: 907-793-1221
Email: jody.colombie@alaska.gov
List Name: AOGCC_Public_Notices@list.state.ak.us
You subscribed as: jody.colombie@alaska.gov
Unsubscribe at: http:Hlist.state.ak.us/mailman/options/aogcc_Public_notices/jody.colombie%40alaska.gov
Bernie Karl Gordon Severson Richard Wagner
K&K Recycling Inc. 3201 Westmar Cir. P.O. Box 60868
P.O. Box 58055 Anchorage, AK 99508-4336 Fairbanks, AK 99706
Fairbanks, AK 99711
George Vaught, Jr. Darwin Waldsmith
P.O. Box 13557 P.O. Box 39309
Denver, CO 80201-3557 Ninilchik, AK 99639
VI II
S
ConocoPhillips
April 12, 2021
Jeremy Price, Chair
Alaska Oil and Gas Conservation Commission
333 W. 7th Ave #100
Anchorage, Alaska, 99501-3539
Stephen Thatcher
Manager, WNS Development
North Slope Development
ConocoPhillips Alaska, Inc.
P.O. Box 100360
Anchorage, AK 99510-0360
phone 907.263.4464
RE: Application for Pool Rules Rendezvous Oil Pool, North Slope, AK
Dear Commissioner Price,
RECEIVED
APR 1 Z 2021
AOGCC
In accordance with 20 AAC 25.520, ConocoPhillips Alaska, Inc. (CPAI) as operator of the Greater Moose's
Tooth Unit (GMTU), requests that the Alaska Oil and Gas Conservation Commission approve CPAI's
application for a Conservation Order to classify the Rendezvous Oil Pool (ROP) and to prescribe pool rules
for development of the ROP within the GMTU.
Pursuant to 20 AAC 25.537 and 20 AAC 25.540(c)(10), CPAI requests that Appendix 1 to this application
be treated as confidential as the information is a trade secret or is commercially confidential and proprietary
information entitled to confidential treatment.
CPAI requests that the hearing date for this application be scheduled as soon as possible after the 30-day
public notice period has concluded. Please contact Dana Glessner (265-6478,
glessd@conocophillips.com) if you have questions or require additional information.
Regards,
} � I �Wes,
Stephen Thatcher
Manager, WNS Development
Cc:
Chait Borade, Arctic Slope Regional Corporation
Erik Kenning, Arctic Slope Regional Corporation
Wayne Svejnoha, United States Department of Interior, Bureau of Land Management
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 1 of 53
P hilli
Conoco ps
APPLICATION FOR POOL RULES OF THE
RENDEZVOUS OIL POOL
April 12, 2021
1. Introduction
2. Geology
3. Reservoir
4. Reservoir Development
5. Drilling
6. Well Operations
7. Facilities
8. Proposed ROP Rules
List of Figures:
1. Proposed Rendezvous Pool Area
2. Defining well, Rendezvous 2, highlighting proposed Rendezvous Oil Pool interval
3. GMT2 Project Location
4. Rendezvous Pool proposed development plan with drilling order for initial ten wells
5. a) Cross Section flattened on top Alpine (Alpine D) from Spark 4 — Carbon 1 - Rendezvous A —
Rendezvous 2 — Altamura 1. b) Reference map shows the cross section (red dashed line) over depth
map of the UJU. Depth map of the UJU (Reservoir Base)
6. Depth map of the UJU (Reservoir Base)
7. Proposed Three String Rendezvous Producer Well Design
8. Proposed Four String Rendezvous Producer Well Design
9. Annular Disposal Interval— K-3
10, GMT2 Facilities and Metering, red circles are AOGCC custody meters
Appendix 1 - Confidential Information
11. Lambda"Rho extraction above UJU surface highlighting reservoir presence within the reservoir
boundary and pool area. (Confidential, Appendix 1)
12. Lambda -rho seismic volume showing the seismic response of the Alpine C sand above the mapped
UJU horizon within the GMT2 development area. (Confidential, Appendix 1)
13. Alpine C Isochore for Rendezvous Pool showing Exploration Wells and proposed Pool Boundary
(Confidential, Appendix 1)
14. Rendezvous Net Oil Pay with Proposed Drilling Locations (Confidential, Appendix 1)
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 2 of 53
Appendix 2:
15. Formation water salinity summary with Rendezvous type log (Rendezvous 2) and lithology summary.
Appendix 3 — Annular Disposal of Drilling Waste at CD5
Appendix 4 — Docket OTH 14-026 Annular Disposal of Drilling Waste at CD5
Appendix 5 — CD5-93 Annular Disposal Sundry and Approval
Appendix 6 — MT6-05 Annular Disposal Sundry and Approval
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 3 of 53
1. INTRODUCTION
Scope of Application
This application is submitted for approval by the Alaska Oil and Gas Conservation Commission (AOGCC)
to define the proposed Rendezvous Oil Pool (ROP) and establish Pool Rules for the oil pool pursuant to
20 AAC 25.520.
ConocoPhillips Alaska, Inc. (CPAI), submits this application to the AOGCC in its capacity as Operator of
the Greater Moose's Tooth Unit (GMTU) and on behalf of the GMTU working interest owners (WIO). The
scope of this application includes a discussion of geological and reservoir properties of the proposed
ROP as they are currently understood, and CPAI's plans for reservoir development, reservoir
surveillance, and well construction.
CPAI requests the AOGCC approve the proposed rules which will provide for economic development of
the resources, promote greater ultimate recovery, and prevent waste. This application contains
confidential data concerning the ROP which CPAI requests be held confidential in accordance with the
provisions of 20 AAC 25.537 and 20 AAC 25.540(c)(10). Confidential data is provided in Appendix 1.
Concurrent with this request, CPAI is also separately applying to the AOGCC for an Area Injection Order
(AIO) for the proposed ROP.
Pool Area and Interval
The proposed area to be covered by the ROP rules is shown in Figure 1. The Rendezvous 2 well
provides the type log for the ROP shown in Figure 2. CPAI requests that the Alpine C and Alpine D
intervals, as shown in the correlative section on the type log from measured depths (MD) of 8,229 feet to
8,393 feet or -8,104 feet to -8,268 feet true vertical depth below mean sea level also termed true vertical
depth subsea (TVDss), be included in the Pool. The base of the ROP is defined by the Upper Jurassic
Unconformity (UJU) as defined by the Rendezvous 2 well at 8,393 feet MD and -8,268 feet TVDss.1 The
top of the ROP is defined by the top of the Alpine D interval (base of the Miluveach Shale) as shown in
the Rendezvous 2 well at 8,229 feet MD and -8,104 feet TVDss. The proposed pool boundary extends
approximately one full quarter section beyond the largest estimate of Alpine sand presence (Figure 1) to
ensure appropriate coverage of the reservoir held by the GMTU WIO. The Pool boundary terminates in
the south and southeast at the GMTU boundary and excludes sections not currently held by the GMTU
W10.
Project Background
The ROP was first assessed and delineated from 2000 to 2004 by the Rendezvous A (2000), the
Rendezvous 2 (2001), the Spark 1A (2001), the Moose's Tooth C (2001), the Altamura 1 (2002), the
Spark 4 (2004), and the Carbon 1 (2004) wells. Rendezvous 2 and Altamura 1 encountered liquid
hydrocarbons, while Rendezvous A, Spark 1A, Spark 4, and Carbon 1 encountered a full gas column with
liquid hydrocarbons present in the well tests. Based on this data a gas oil contact (GOC) was estimated to
lie somewhere between the Rendezvous A and Rendezvous 2 wells. Figure 1 shows the positions of the
exploration wells in relation to the ROP boundary and proposed oil development.
CPAI screening evaluations of liquid and gas developments have shown a standalone processing facility
is not economically feasible. Therefore, the ROP oil column development will be routed back to the ACF
for processing. The development of the ROP gas cap routed through the ACF for processing is also not
feasible due to gas handling limitations, which will result in significant production backout of existing
pools. Consistent with obligations under the Bear Tooth Unit (BTU) and GMTU Agreements CPAI
continues to actively analyze development options for Spark.
I The information contained in this application is intended to satisfy the requirement of 20 AAC 25.517(a)
that the operator of the Rendezvous Oil Pool submit to the AOGCC a plan of reservoir development and
operation.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 4 of 53
In 2008, the GMTU was formed. In 2018, a Record of Decision was issued on a Supplemental
Environmental Impact Statement authorizing the project to develop the ROP. The project to develop the
ROP is also known as the Greater Moose's Tooth 2 (GMT2) Project and was sanctioned by CPAI in 2018.
GMT2 is the second development wholly within the National Petroleum Reserve, Alaska and the GMTU.
The project consists of a new drillsite and associated facilities located approximately 8 miles southwest of
the Greater Moose's Tooth 1 (GMT1) project/ Moose's Tooth 6 (MT6) drillsite (Figure 3), with a
permanent road connecting the two drillsites, four new cross-country pipelines (produced fluid, water
injection, gas injection and dry gas supply) and 36 horizontal wells (18 producers and 18 injectors, as
shown in Figure 4). An injection program of water alternating with enriched gas injection will optimize
recovery from the pool. GMT2
rior to
ng
on the surface w with production from the LOP ltransfer be measured for custody
LOPand he CRU GMT2 produ tonwill be processed at hegled
ACF in the CRU.
From a geologic and reservoir perspective, the ROP is like the LOP in that it does not have Alpine A sand
present, does not include Kuparuk sands, and is light oil with an associated higher solution gas -oil ratio
(GOR) than CRU Alpine sand oil. From an operations perspective, the ROP will be operated similar to the
LOP and CRU upper Jurassic oil pools.
Ownership
CPAI is the operator and 100% working interest owner in the GMTU, and is 100% working interest owner
of the producing intervals in the CRU.
CPAI is the operator of the GMTU and the CRU.
The Surface Owners of the ROP area are Kuukpik Corporation (Kuukpik) and the United States of
America, Department of the Interior, Bureau of Land Management (BLM).
The Subsurface Owners of the ROP are Arctic Slope Regional Corporation (ASRC) and BLM.
The Rendezvous Participating Area (PA) is being formed to develop the ROP. The proposed ROP PA
boundary is also shown in Figure 1.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 5 of 53
Con000"Phillips1.1
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GMT 2
Rendezvous Oil Pool 21
Development Plan
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Figure 1: Proposed Rendezvous Pool Area
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 6 of 53
Figure 2: Defining well, Rendezvous 2, highlighting proposed Rendezvous Oil
Pool interval
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 7 of 53
CD0
NATIONAL PETROLEUM Colville
RESERVE-ALASKA �: River
, i Unit
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Figure 3: GMT2 project location
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 8 of 53
1412000 1410M 142WW 1424000 1428000 IMM 1436000 1440000 144400D 144M
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1412000 1418000 1420000 1424000 1428000 1432000 1438000 1440000 1444070 144i=
0 2000 4000 8000 8000 1000 MS
Figure 4: Rendezvous Pool proposed development plan with drilling order for
initial ten wells
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 9 of 53
2. GEOLOGY
Pool Identification
The ROP is defined as the accumulation of hydrocarbons common to and correlating with the interval
between the measured depths of 8,229 feet and 8,393 feet (-8,104 feet and -8,268 feet TVDss
respectively) in the Rendezvous 2 well (Figure 2).
Upper Confining Interval
Deep marine shales of the highly radioactive zone (HRZ), Kalubik and Miluveach intervals form
the upper confining zone for the ROP. Total thickness varies from 680 feet to 1,600+ feet.
Recommended Pool
The top Alpine D marker down to the UJU records continuous deposition of transgressive sands
infilling the paleotopography created by incision of the regionally extensive UJU. The Alpine
package is identified by seismic and well data. A detailed description is provided under the
Stratigraphy and Sedimentology section.
Lower Confining Interval
Below the ROP is the Kingak shale. The Kingak is approximately 1,700 feet thick in the proposed
area of development, consisting of marine shales and siltstones.
Stratigraphy and Sedimentology
The ROP is a hydrocarbon accumulation formed by a stratigraphic trap of the shallow marine Upper
Jurassic Alpine sandstone. The Alpine sandstone unconformably overlies the Kingak Shale and underlies
the Miluveach Formation. Within the ROP the Alpine sandstone can be subdivided into the Alpine C and
Alpine D intervals. The Alpine C interval consists of nearshore transgressive sands infilling the
paleotopography created by incision of the regionally extensive UJU. The Alpine D interval conformably
overlies the Alpine C sands and is characterized by interbedded siltstones and argillaceous sandstones
that represent distal deposition of the transgressive sequence. The Alpine C interval contains reservoir
quality sands and is the development target within the ROP. Figure 5 is a cross-section from the northern
Spark 4 southward to the Carbon 1, Rendezvous A, Rendezvous 2, and Altamura 1 wells highlighting the
Alpine interval.
A type log of the full stratigraphic column is shown in Appendix 2, Figure 15.
Structure
Within the proposed pool area, the top of the Alpine sand (D interval) lies between -7,474 feet and -8,613
feet TVDss, and the top of the UJU lies between -7,474 feet and -8,617 feet TVDss. The reservoir dips
approximately 1 degree to the south with local variations Fluctuating between 0 and 2-degree dip,
generally southward.
Structurally, the Rendezvous incision was developed during base -level fall associated with an uplift of the
Beaufortian rift shoulder. The structure map of the UJU (Figure 6) shows the area of incision with the
current regional dip to the south. Within the ROP, the Alpine A interval has been completely removed by
the UJU which has incised into the Kingak interval below.
There is one set of seismically mapped normal faults present in the proposed development area, and
another set to the north of the proposed development area, both of which are interpreted to be Early
Cretaceous in age (Figure 6). The set of faults within the development area are on the eastern extent of
the development, with a general NNE -SSW strike, and normal throws (both down to the east and west) of
30 feet to 50 feet. With an estimated gross sand thickness of 80 feet to 100+ feet, reservoir
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 10 of 53
compartmentalization is not expected. To the north of the proposed development area a set of faults trend
WNE-ESE with normal, down to the south throws of 5 feet to 30 feet. Similar to the eastern faults, with an
estimated reservoir thickness of 90 feet to 120 feet in the area, no reservoir compartmentalization is
expected.
Trap Configuration and Seals
The hydrocarbon accumulation in the ROP area is formed by a stratigraphic trap of the shallow marine,
Upper Jurassic Alpine sandstone. The Alpine sandstone unconformably overlies the Kingak Shale and
underlies the Miluveach Formation. The Kingak formation below and Miluveach, Kalubik, and HRZ
shales above provide the seal for the Alpine sandstone.
Reservoir Compartmentalization
Reservoir compartmentalization is not expected in the ROP. In cored wells, extensive bioturbation has
homogenized the reservoir removing any stratigraphic barriers. It is interpreted that this bioturbation is
extensive throughout the Alpine Rendezvous deposit. Where observed on seismic data, faulting in the
pool does not have adequate offset to isolate portions of the reservoir.
Permafrost Base
The base of permafrost is interpreted to lie between -800 feet to -1,200 feet TVDss within the proposed
development area.
Reservoir Fluids and Contacts
No water contacts have been encountered or interpreted within the ROP. None of the exploration or
development wells drilled within the CRU or the GMTU have encountered an oil -water contact (OWC) in
Jurassic -aged sands. As a result, an OWC is not expected within any portion of the ROP.
There is a gas -oil contact (GOC) present in the ROP and it is currently estimated at -8,108 feet TVDss
based on fluid pressure gradients observed in modular formation dynamics testing (MDT) data from the
Rendezvous A and Rendezvous 3 wells. The GOC informs the northern oil boundary within the ROP and
is reflected in the net pay map shown in Figure 14 (Confidential, Appendix 1).
Confidential seismic, sedimentologic, and net -reservoir interpretations supporting this application are
provided in Appendix 1.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 11 of 53
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Figure 5: a) Cross Section flattened on top Alpine (Alpine D) from Spark 4 -
Carbon 1 - Rendezvous A - Rendezvous 2 - Altamura 1. b) Reference map shows
the cross section (red dashed line) over depth map of the UJU.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 12 of 53
ifiwwv�w
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Figure 6: Depth map of the UJU (Reservoir Base)
7V
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Exploration Well
Development Well
ERD Development Well
Reservoir Boundary
Proposed Pool Boundary
50'
Contour Interval
Depth TVDss, feet
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 13 of 53
3. RESERVOIR
Introduction
The ROP consists of an Alpine C sandstone deposit. The very low oil viscosity yields a favorable mobility
for water injection and is expected to yield efficient reservoir sweep.
Reservoir Properties
Reservoir oil fluid properties are summarized from the PVT study completed on the Rendezvous 3 well at
8,250 feet MD (-8,140 feet TVDss) and are listed below:
- Initial Reservoir pressure: 3802 pounds per square inch (PSI)
- Reservoir temperature: 2070 F
- GOR: 1279 standard cubic feet per barrel (SCF/BBL)
- API gravity: 37.20
- Bubble point pressure: 3815 PSI
- Oil formation volume factor: 1.7 reservoir barrel per stock tank barrel oil (RB/STBO)
- Oil viscosity: 0.232 centipoise (cP)
- Gas formation volume factor: 0.8 barrel per thousand standard cubic feet (BBL/MSCF) at
saturation pressure
Reservoir rock properties are described in the Geologic Section.
Original Oil -in -Place (OOIP)
The estimated OOIP volume within the oil development area is based on the well data from Rendezvous
2, Rendezvous 3, and Altamura 1, as well as from seismic data. Predevelopment COW estimates range
from 300 to 460 million barrels of oil (MMBO). Additional reservoir data from the planned oil development
wells will enhance the understanding of sand distribution and may result in an update to the OOIP range
estimate. An oil net pay map for a medium OOIP scenario is shown in Figure 14 (Confidential, Appendix
1).
Original Gas -in -Place (OGIP)
The gas accumulation, commonly referred to as Spark, has not been characterized to the same degree
as the oil rim and it is not targeted for current development. A 2014 volumetric analysis estimated a
potential OGIP ranging from 1.7 to 2.8 trillion cubic feet (TCF) of gas and 51 to 168 million barrels
(MMBBL) of liquids.
The condensate yield range for Spark is demonstrated by the flow tests and fluid samples from two
exploration wells, the Spark 1A and the Carbon 1. Isochronal well tests reported multiple rates but the
final flow period for Spark 1A tank corrected GOR trended to 17,000 SCF/STB or approximately 60
BBUMMSCF. The Carbon 1 well test and fluid samples produced significantly less condensate with a
yield of approximately 40 BBL/MMSCF.
Compositional and PVT analysis of the separator samples indicates a yield range of 30 to 60
BBUMMSCF. This range appears consistent with the corrected well test GOR trends.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 14 of 53
4. RESERVOIR DEVELOPMENT
Development Plan
The ROP will be developed with horizontal production and injection wells in line drive patterns oriented
with the maximum principal geomechanical stress direction. The initial development plan includes 18
horizontal injection wells and 18 horizontal production wells with possible pilot holes. The pilot holes
would provide additional reservoir data and assist in optimization of horizontal well placement. Based on
current information planned drilling locations are shown in Figure 1 and Figure 4.
Pressure support will be maintained with water and gas injection targeting a cumulative voidage
replacement ratio of 1.0. An Enriched Water Alternating Gas (EWAG) flood will be initiated early in the
waterflood to improve ultimate recovery. EWAG will yield incremental recovery with condensing
components that will result in improved oil mobility due to oil swelling and reduced interfacial tension.
Simulation work demonstrated an optimal well spacing of 1,200 feet separation between injectors and
producers. The producers will be developed using horizontal wells with solid liners including pre -
perforated pups and fracture sleeves. External swell packers may be added to provide annular isolation
between pre -perforated pups. Multi -lateral or other completion methods may be employed as conditions
dictate.
Vertical well waterflood and horizontal well line drive waterflood were both analyzed as development
options for GMT2. A vertical well development is not as competitive due to the number of wells required.
Horizontal water injection and production wells are expected to yield efficient areal and vertical sweep
due to the low oil viscosity which yields favorable waterflood mobility. EWAG will additionally enhance
displacement efficiency and assist with reservoir throughput as the waterflood matures.
Gas Cap
There is a GOC present in the north of the ROP but it has not been directly intersected by a wellbore to
date. The GOC is currently estimated at -8,108 feet TVDss based on MDT pressure data from the
Rendezvous A and Rendezvous 3 wells. The main intent of the GMT2 project is to avoid drilling into or
producing from the gas cap as commercial production from the gas cap is not intended and high GOR
wells will not be competitive with ACF gas handling constraints.
The first northern injector will target the gas cap at the toe of the wellbore to intersect and confirm the
GOC depth. Other northern production and injection wells will stay below and offset from the gas cap to
minimize the potential for gas cap production and injection. Fracture stimulations will be offset laterally to
avoid stimulating into the gas cap. The 1,200' well spacing will promote a preferential pressure gradient
between northern injection and production wells, which are planned to be drilled proximal to the base of
the reservoir. This pressure gradient is supported by simulation work, and is expected to limit the volume
of water injection that displaces into the gas cap. The southern wells are not expected encounter the gas
cap due to the dipping structure. A voidage replacement ratio of 1.0 is targeted to avoid production from
the gas cap.
The oil rim development is designed to minimize gas coning and manage the GOR. The processing
facility is limited in total gas processing capacity, and the potential for elevated GOR could impair GMT2
offtake and ultimate recovery. As the field reaches maturity, a lean gas chase could be considered.
Dry gas injection into the gas cap was considered as a potential enhanced oil recovery (EOR) method for
ROP development. In this case the low permeability of the ROP impedes high recovery from a gravity
drainage system. CPA] analysis shows that the gravity stable offtake rate for ROP is too low for economic
development.
Recovery Mechanisms
The historical success of the secondary and tertiary recovery mechanisms in the Alpine C sand of the
CRU provides an analog for the expected performance in the ROP. The favorable rock properties and
waterflood mobility for the proposed ROP yield an expectation for ultimate recovery that will be in the
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 15 of 53
range of 35-60% of OOIP. A subset of the factors that may impact recovery include facies distribution, net
pay, voidage replacement, well productivity, and OOIP uncertainty.
Reservoir simulation and analytical analysis indicate that primary recovery alone is expected to yield
recovery of 20%. The remaining ultimate recovery is expected through secondary and tertiary
mechanisms with EWAG injection. The expected EWAG recovery is 25% of OOIP based on reservoir
simulation at the type pattern and full field model scales. The EWAG line drive is the development option
that is expected to maximize recovery. Tertiary recovery with the EWAG process is expected to generate
incremental recovery above the base waterflood performance.
Recovery Performance
The forecast of recovery performance for the ROP with the planned development is based on multiple
reservoir simulation efforts. Fine scale pattern models (type pattern models) were used to optimize well
spacing and forecast performance at the pattern level. A field scale upscaled model was also used as a
forecasting tool for the planned development.
A slim tube study was performed to examine minimum miscibility enrichment composition and pressure.
This work suggests that the first displacement is expected to be miscible, with later displacements being
sub -miscible. However, enriched gas field composition has more recently been sub -miscible; thus, current
expectations are for all slugs to be sub -miscible in the field.
Future Development
Execution of the initial 36 well development plan will yield additional data that will provide a better
understanding of the sand distribution in the Rendezvous reservoir. Additionally, the Moose's Tooth 7
(MT7) drillsite is designed to accommodate 12 additional wells that are considered extended reach drilling
(ERD) targets (Figure 1, GMT2X well plans). CPAI continues to also analyze future development options
for Spark.
Producing Gas -Oil Ratio (GOR) Expectations
CPAI requests that the requirements described in 20 AAC 25.240 be waived for the proposed ROP since
the Pool plans are to implement enhanced recovery techniques. Since gas will be injected into the ROP
during the life of the Pool, the GOR is expected to rise above solution GOR in some wells. The
breakthrough of re -injected gas will cause GORs of some producing wells to exceed limits set forth in 20
AAC 25.240. Additionally, the ROP average reservoir pressure will be maintained above the bubble point
pressure with water injection for pressure maintenance.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 16 of 53
5. DRILLING
Drilling/Well Design
The ROP will be accessed by wells drilled from a gravel pad utilizing drilling procedures, well designs,
and casing and cementing programs consistent with current practices in other North Slope fields.
Maintaining stability of the intermediate borehole to drill, run and cement casing through the shales of the
HRZ, Kalubik and Miluveach formations just above the reservoir is the main challenge for drilling. There
are two different casing plans based on mapping of the unstable HRZ slump blocks and total footage of
the intermediate hole. Well paths that do not encounter unstable HRZ slump blocks with targets near the
drill pad have three hole sections, otherwise the plan is to drill the intermediate in two intervals resulting in
four hole sections. The surface casing will be upsized to 13-3/8 inch on initial three string wells to provide
the contingency to sidetrack and convert to a four -string casing design. Figures 7 and 8 illustrate generic
ROP producer well designs and the different casing plans. Maintaining stability of the borehole and
horizontal geo-steering in the pay zone are keys to success.
For proper anchorage and to divert an uncontrolled flow, 80 feet of 20 inch insulated conductor casing will
be set on 20 foot well centers and cemented to surface. Cement returns will be verified by visual
inspection.
Surface holes will be drilled, and casing set below the C-5 marker in the Colville Group for proper
anchorage and protection from permafrost thaw and freeze back. Within the planned development area,
the base of permafrost is interpreted to lie between -800 feet to -1,200 feet TVDss. No hydrocarbon
bearing intervals have been encountered to this depth in exploration wells and this casing point provides
sufficient depth for kick tolerance. Surface casing strings will be cemented in accordance with 20 AAC
25.030(d)(4). The blowout prevention equipment (BOPE) will be installed and tested in accordance with
20 AAC 25.035. A Formation Integrity Test (FIT) will be performed in accordance with 20 AAC 25.030(f)
In three -string wells, the intermediate #1 section is between the proposed surface casing shoe and the
top of the reservoir section. The section will be directionally drilled with the casing shoe at approximately
85 degrees just above, orjust into the Alpine C sand. This section consists primarily of interbedded
shales and siltstones. Top of cement for the casing will extend a minimum of 500 feet measured depth or
250 feet true vertical depth, whichever is greater, above the shoe or higher, potentially in stages if any
hydrocarbon bearing formations are encountered in accordance with 20 AAC 25.030(d)(5). See Figure 7.
For the four -string casing design, the intermediate hole will be drilled in two intervals. Both sections will be
directionally drilled with the first casing point being the top of the HRZ and the second casing point at
approximately 85 degrees inclination just above, orjust into the Alpine C sand. After drilling out both the
intermediate casing and/or liner shoes, a FIT will be performed in accordance with 20 AAC 25.030(f).
For the intermediate #2 section from the top of the HRZ into the Alpine C sand, it may be drilled
conventionally or via steerable drilling liner (SDL) where a liner is carried into hole behind a directional
drilling and logging pilot assembly that is retrieved prior to cementing. See Figure 8.
Managed pressure drilling (MPD) will also be used to minimize borehole pressure cycling and provide
sufficient overbalance to hold back the mechanically unstable shale formations. The liner top of cement
will extend a minimum of 500 feet measured depth or 250 feet true vertical depth, whichever is greater,
above the Alpine C sand in accordance with 20 AAC 25.030(d)(5) or higher based on the production
packer setting depth.
Based on current knowledge of reservoir characteristics, CPAI expects to develop the ROP using
horizontal wells. The producers will be completed with solid liners including pre -perforated pups and
fracture sleeves for hydraulic stimulation. External swell packers may be added to isolate out of pay
excursions or fault crossings along the lateral and also allow for future well intervention optionality.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 17 of 53
Injectors will be unlined barefoot completions. Multi -lateral or other completion methods may be employed
as conditions dictate. Both injection and production wells will be completed with 4-1/2 inch tubing to
minimize hydraulic friction.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 18 of 53
Top AIPme C
24' 79 ppf H-40 Metal
Conductor
8o redcontented to solace
13.31e" 68e Ldo 6TCAbd
Surface Cadrp net 02A1W bO
4-112" 12.W Log HT0563
Top of 7-5V 33.7a L-80 TXP INT Coning
I@ -&SW NO (4.4W of 3370)
Downnole Gauge
PfocUCaon Packer
Tuprngf Uner Completion
1) 4.8" Landing Nipple (3 813" ID)
2) 4-W x 1' GLY (2.3x}
3) HES DaNnWe Gauge
4) ProQ10011 PaCKer
5) 4 .' Landing Nipple (3 7B ID)
6) Liner Top Packer I Hango"I'Tie Saa! Stowe
ZXP Liner Top Packer V/." 12.6a L,80 H70563 Liner w! spell
packers an d closeable trac pone set Q
Qf Mew ND
hadct;m Hem �A
r-5f8" 29.75133.70 L40 TXP INT Casting
it985' ND
Figure 7: Proposed Three String Rendezvous Producer Well Design
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 19 of 53
20' 19 pot N-40 Nsatdled
Cooductor
80 No cirwiedto w1we
13.34"MppILMOTCAW
Surface Cntn9 an Q 3jw MD
441r2" 12.6 ppl L d0 HY0563
95M' 43.5 pol L-00 T%P* 9 TV US poll
L d0 HYD563 Cgong set 011,m No
DaMrotole Gauge
Prodrtdon PacYer
TUM9I Un* Crrnp149on
1) 4- :" LandM9 MIppM (3 0 W to)
2) 4-Wx T'GLM
3) 4.51'r VOLM
4) N0091on PaC"t
6)4:a' La11dMq Mpple (3.75' NaGd)
6) Uner Top P4dW I Hnqu %W TM Back aaae
Z(F User Too PSMO(
12.de1 801yd593 LMM eN
40 cbdamle lrac sMeves
Top ApMe C
7" 26 pot 1..60 HY05W INT C adn0 set @
14460' MD
arm Hail woduttlw tdde
Top 24,65W up
Figure 8: Proposed Four String Rendezvous Producer Well Design
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 20 of 53
Drilling Fluids
The drilling fluid program designed for wells within the ROP will be prepared and implemented in
accordance with 20 AAC 25.033. Formation pressures for the strata to be penetrated will be estimated
based on data gathered from the exploration wells drilled into the ROP. Water based mud systems are
planned for all wellbore sections where mineral oil based systems are not required to maintain hole
stability or prevent reservoir damage.
Annular Disposal
Disposal of drilling wastes will be proposed for GMT2 in accordance with 20 AAC 25.080 in annuli of wells
with surface casing set below the permafrost. Annular disposal is being implemented at the ROP for
environmental, operational, and economic reasons and is in conformance with the 2004 Environmental
Impact Statement, as supplemented in 2018, covering the GMT2 Project. Annular disposal at GMT2
drillsite remains an important tool to augment the capacity of local disposal wells. Wastes that are
inappropriate for annular disposal at GMT2 will be injected per regulations into the disposal wells on CD1
at the ACF. Additionally, there is a new, third disposal well planned for 181 quarter 2022 in the CRU.
The basis for CPAI's application is the same as was articulated in CPAI's letter to the Commission dated
November 7, 2014 in support of utilizing annular disposal at the CD5 drillsite. See Appendix 3 (letter of
11/7/14 from Alexa to Foerster). After CPAI sent this letter the Commission held a hearing under Docket
OTH 14-026. After the hearing, the Commission closed the matter with a letter. See Appendix 4 (letter
from Foerster to Alexa dated 1/16/15). CPAI has utilized annular disposal during the CD5 drilling program
from 2015 up to the most recently approved CD5-93 sundry approval #321-082 in 2021 (Appendix 5).
Annular disposal was approved and proved to be instrumental in the successful Lookout drilling program
during the 2018 and 2019 execution (Appendix 6). Approved sundries provided for efficient and safe
drilling fluid disposal due to the remoteness and limited resources available during the Lookout program.
The same reasons support approval of annular disposal for the Rendezvous wells.
The proposed annular disposal interval will be the K-3 in the Cretaceous age Nanushuk Group (Figure 9).
This interval contains approximately 350 feet TVD of interbedded sandstone and shale (with
approximately 130 feet of sand). Surface casing will be set in shale above the K-3 marker. The upper
confining barrier is composed of 1,000 feet TVD of shale and siltstone of the Upper Cretaceous Colville
Group. Approximately 1,000 feet TVD of permafrost overlies this interval. The lower barrier is composed
of over 3,000 feet TVD of Torok Group, primarily marine shale with some interbedded thin sands.
No freshwater sands have been encountered in GMTU exploration wells as further described in Appendix
2 — Formation Water Salinity. CPAI requests a finding in the ROP Orders that no freshwater aquifers are
present in the ROP area. This request is to avoid duplicative reviews of whether there are freshwater
aquifers in the ROP area in future annular disposal and injection well permit applications.
Blowout Prevention
General well control for drilling and completion operations will be performed in accordance with 20 AAC
25.035.
Directional Drilling
CPAI requests that the requirements described in 20 AAC 25.050(b) be waived for the proposed ROP to
relieve administrative burden. CPAI proposes that the Conservation Order require the following in each
Application for a permit to drill instead of the information required by 20 AAC 25.050(b):
1) plan view
2) vertical section
3) close approach data
4) directional data
Well Spacing
CPAI requests that the requirements described in 20 AAC 25.055 be waived for the proposed ROP
because the proposed horizontal well development, via line -drive flood pattern, will yield greater recovery
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 21 of 53
than a conventional vertical/slant well development plan with a minimum spacing rule. In lieu of the
requirements under 20 AAC 25.055, CPAI proposes that there shall be no restrictions as to well spacing
except that no pay shall be opened to a well within 500 feet of an external GMTU boundary line where the
owners and landowners are not the same on both sides of the line.
Permafrost
base at
^1,000' NDss
a
Surface
Casing
K3'
U
farm 9i
aleon_B6
Ndm_BS
� u
MOu H
=Mzqm
11111111=11131111111
m�1
Figure 9: Annular Disposal Interval — K-3
Colville Group: Weakly
consolidated, silty,
medium gray daystone
with some siitstone
lenses.
Nanushuk Group:
Shallow marine deltaic
sediments, like Colville,
but more lithi ied.
Torok Group: Series of
st slope to deep marine
sedimentsforming
96 chnoforms. Mainly
n marine shale with
Interbedded turbiditic
?+ sands.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 22 of 53
6. WELL OPERATIONS
Well Design and Completions
Production and injection wells will use 4-1/2 inch tubing to minimize friction associated with the high rate
potential of the reservoir and the horizontal completions. Based on well performance, tubing size is
subject to change.
Producing wells will be equipped with gas lift mandrels. A single packer will provide pressure isolation for
the tubing -casing annulus. Wells with liners placed in the horizontal segments may utilize combination
liner hanger/packers.
Artificial Lift
Artificial lift will be via gas lift; however, CPAI may employ other techniques (jet pump, electrical
submersible pumps, etc.) to optimize reservoir pressure drawdown as the reservoir matures. Dry gas will
be delivered to the drillsite at approximately 4,000 psi and the pressure will be dropped down to
approximately 2,000 psi for the purposes of gas lift.
Reservoir Surveillance
CPAI requests that the Commission approve the reservoir pressure monitoring plan set forth in Section 8,
Rule 6 of this application. The pool common datum for reporting should be -8,108 feet TVDss.
Well Work Operations
Well work operations in the ROP will include routine mechanical integrity tests of each wellbore and
artificial lift maintenance. Operations will also include remedial management of scale, paraffins and other
well issues with slickline, inhibitor, or hot diesel treatments.
Stimulation
Stimulation techniques, including hydraulic fracturing, is planned for the producers at GMT2. Wellbore
trajectories, cementing programs, and tubulars will be designed to accommodate hydraulic fracture
stimulation techniques. Hydraulic stimulation operations will be performed in accordance with 20 AAC
25.283.
Well Safety Valve System
GMT2 wells will be equipped with vertical trees. The installation and inspection and testing of safety valve
systems will be conducted following notification of the AOGCC consistent with the requirements of 20
AAC 25.265.
Well Instrumentation and Monitoring
Wells will be equipped with instrumentation and monitored in real-time at the ACF. CPA[ plans to install
the following instrumentation:
• Tubing pressure and temperature
Inner annulus pressure
• Outer annulus pressure
• Bottomhole pressure (producers)
Gas lift rate (producers)
• Water and enriched gas injection rate (injectors)
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 23 of 53
7. FACILITIES
Drill Site Facilities and Flowlines
The ROP will be developed from the new MT7 drillsite which will connect to the ACF for production
processing and delivery of dry gas, enriched gas, water, and electricity. See Figure 10. MT7 is not a
normally manned drillsite, however, a drillsite operator will be present on the drillsite every day except in
extreme weather. The MT7 design requires minimal operator presence for operations. Monitoring of
critical well and facility information, and routine operations are accomplished remotely from the ACF
control room.
The following facilities are located at MT7:
• 2-Phase test separator with gas metering, liquid metering and Phase -Dynamics metering for
oil and water fractions of the liquid
3-Phase production separator with metering for oil, gas, and water
Production Heater
• Pipe Racks for 36 wells on 20 foot center spacing
Modules for emergency shutdown (ESD), pigging, fuel gas, chemical injection, remote
electrical interface module (REIM) and switchgear
Production wells selectively flow to either the production separator via the production header or to the test
separator via the test header. Test separator fluids flow into the production separator before leaving the
drillsite. At the outlet of the production separator, the total drillsite oil, water, and gas streams are
measured prior to being commingled in a new 20 inch cross-country flowline to the ACF where GMTU
production is commingled with CRU production. Dry gas used for both fuel and gas lift will arrive via a 6
inch line.
Injection wells selectively connect to either the water injection header or the enriched gas injection
header. Water injection arrives via a new 14 inch flowline connecting MT6, MT7, and CD5 drillsites to the
ACF. Expected water injection arrival pressure at MT7 is approximately 2,650 psi. Enriched gas injection
arrives via a new 8 inch flowline connecting MT7 to the existing line from MT6 and CD5. Expected
enriched gas arrival pressure at MT7 is approximately 4,000 psi. The pipeline rates of both dry gas and
enriched gas are measured at the CD5 pad prior to arriving at the MT7 drillsite.
Production Processing
ROP production will be commingled with production from other GMTU and CRU pools prior to processing
at ACF. Stabilized oil production will be delivered to the Alpine Pipeline and then on to the Trans -Alaska
Pipeline System (TAPS). GMTU and CRU wells connected to the ACF will be managed and prioritized to
maximize oil production rate in conformance with facility limits.
ROP gas production will be processed in the ACF. ROP will provide its share of ACF fuel and flare
requirements and some gas will be returned to GMTU (ROP + LOP) in the form of dry gas for either gas
lift and drillsite fuel or in the form of enriched gas for enhanced recovery purposes. When GMTU gas
production is greater than GMTU gas usage requirements, this excess gas production will be injected into
CRU pools for enhanced recovery purposes. On a cumulative basis, GMTU gas production is expected to
be greater than GMTU usage requirements, resulting in a net injection into CRU pools. It is anticipated
that there will be periods, particularly when initiating enriched gas injection cycles in ROP wells, and
possibly for startup, that GMTU gas production is less than, or deficient from, total GMTU gas
requirements, and a sale of gas from CRU to GMTU will be required to cover the deficiency.
For waterflood enhanced oil recovery, the initial plan is to provide seawater to the ROP for waterflood
injection to maintain reservoir pressure and enhance oil recovery. In the future, produced water from the
ACF may also be injected in the ROP.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 24 of 53
ROP water production is expected to be very low until breakthrough of water injection occurs. ROP water
production, after delivery to ACF and commingling with water from other CRU pools, will be injected into
CRU pools for enhanced recovery purposes or possibly returned to the ROP.
ROP production is expected to be fully compatible with the LOP and other CRU pools' production from
both a production processing and injection perspective. The ROP is a very close analog to the ACID
because both pools share a similar geologic history with the same oil charge source (Lower Kingak) and
comparable structural and depositional schemes. ROP water production will be a mixture of connate
water and seawater or ACF produced water and it is not expected to be significantly different than LOP or
ACID produced water and therefore should be fully compatible with all GMTU and CRU pools. Application
of scale inhibitors, corrosion inhibitors and any other production treatments at ROP will be similar to those
at LOP and other CRU pools.
Metering
CPAI applied to the AOGCC for approval of its approach to GMT2 production measurement on July 12,
2018. Consistent with that order, metering points for production, injection gas, and dry gas are shown in
Figure 10.
More specific metering details for production custody transfer of oil and gas have been provided in the
GMT2 Production Separator Metering Application submitted to the AOGCC on September 24, 2020.
Metering details for return gas custody transfer have been provided in the CRU Gas Metering Application
submitted to the AOGCC on October 9, 2017,
Production Allocation
In accordance with AOGCC Other Order 148 dated December 19, 2018 and BLM Sundry Approval for Oil
Measurement by Other Methods and Redundancy Verification of Oil Measurement Secondary Pressure
and Temperature Instruments Greater Moose's Tooth Unit (Rendezvous) dated July 1, 2019, ROP
production will receive an allocation factor of one (1.0). Other Order 148 also permits the waiver of the
requirements of 20 AAC 25.228 to allow for fiscal allocation of production from GMT2 to be based on a
metering system that does not meet custody transfer quality standards.
Production allocation to individual production wells in the ROP will be performed in the same manner as
other North Slope fields. Wells will be tested at least monthly and the well tests will be used to create
performance curves to determine the daily theoretical production from each well. An allocation factor
comparing actual total daily ROP production sales to the sum of individual well theoretical rates will be
used to adjust theoretical well production to allocated well production.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 25 of 53
0 :-e®
Q GMTI IrgeWW
C� O
. ,..
GMT1 Pr
Rand...
GMT2 Dry Gas InjeMn
Injectbn and Gas Lift
~ Metered at Each Well
GMT2 Enrkhed Gas Injection
GMT2Waterinjecuon
GMT2
GMT unit i CoMXe Film Unit
O CRU Dnllsi¢s
• Total gas metered at CD5 before leaving CRU
• Total gas will be metered again separately at
GMTI and GMT2
• Production metered at GMTI and GMT2
separately through 3 phase separator before
commingling
• Production will be allocated back to
individual wells from well tests
• Gas and water injection metered at each
individual well
• Gas lift metered at each individual well
• Red circles = AOGCC custody meters
Figure 10: GMT2 Facilities and Metering, red circles are AOGCC custody meters
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 26 of 53
8. PROPOSED REDEZVOUS OIL POOL RULES
The rules set forth apply to the following area referred to in this order:
I Imiat Maridian
Township
Range
Sections
4-5: All
8: NE1/4
T8N
R1E
9:N1/2
1-3: All
4: N1/2, SE1/4
10: N112, SE1/4
11-14: All
15: NE1/4, S1/2
21: NE1/4, S112
22-28: All
29: NE1/4, S1/2
T9N
R1 E
32-36: All
1-10: All
11: N1/2
12: N1/2
15: W1/2
16-21: All
22: W1/2
T9N
R2E
29-32: All
5: W1/2
6: All
7: N112
T9N
R3E
8: NW1/4
1-4: All
5: E1/2
8: NE1/4
9-12: All
13: N1/2
14: N1/2
15: N1/2
T10N
R1W
16: NE1/4
1-17: All
18: N1/2
20: E1/2
21-28: All
29: E1/2
32: E1/2
T10N
R1 E
33-36: All
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 27 of 53
3: NW1/4, S1/2
4-10: All
11: NWt/4, S1/2
12: S1/2
T1ON
R2E
13-36: All
18: W1/2
19: W1/2
30: NW1/4, S1/2
31: All
T10N
R3E
32: SW1/4
25: S1/2
33: S1/2
T11N
R1 W
34-36: All
9: SE1/4
10: S1/2
11: SW1A
13: S1/2
14-16: All
17: SE1/4
19: SE1/4
20-29: All
30: NE1/4, S1/2
T11N
R1E
31-36:All
18: S1/2
19-20: All
21: SW1/4
27: SW1/4
28-33: All
T11N
R2E
34: W1/2
Rule 1 - Field and Pool Name
The field is the Greater Moose's Tooth Field. The pool is the Rendezvous Oil Pool (ROP).
Rule 2 - Pool Definition
The ROP is defined as the accumulation of hydrocarbons common to and correlating with the interval
between the measured depths of 8,229 feet and 8,393 feet in the Rendezvous No. 2 well.
Rule 3 - Well Spacing
There shall be no restrictions as to well spacing except that no pay shall be opened to a well within 500
feet of an external property line where the owners and landowners are not the same on both sides of the
line.
Rule 4 - Drilling Waivers
All permit to drill applications for deviated wells within the ROP shall include a plat with a plan view,
vertical section, close approach data and a directional program description in lieu of the requirements of
20 AAC 25.050(b).
Rule 5 Well Logging and Sampling Requirements
a. A suite of petrophysical well logs including, at a minimum, gamma ray, resistivity, neutron
porosity, and density porosity logs shall be acquired across the ROP in one well from
each drillsite. Gamma ray or resistivity curves shall be recorded from base of conductor to total
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 28 of 53
depth in each well. The AOGCC may require additional wells to be logged using one or more
petrophysical logging tools.
b. A mud log and cutting samples shall be obtained from the base of the conductor through the ROP in
at least one well drilled from each drillsite.
Rule 6 - Reservoir Pressure Monitoring
a. A bottom -hole pressure survey shall be taken on each well prior to initial injection.
b. The operator shall obtain the pressure surveys needed to manage properly the hydrocarbon recovery
processes subject to the annual plan outlined in Rule 8 below. At a minimum, a pressure survey shall
be acquired from at least one well on each drill site each year.
c. The reservoir pressure datum will be -8,108 feet TVDss.
d. Pressure surveys may consist of stabilized static pressure measurements at bottom -hole or be
extrapolated from surface measurements (single phase fluid conditions), pressure fall -off
measurements, pressure buildup measurements, multi -rate test results, drill stem test results, and
open -hole formation tests or other methods approved by the AOGCC.
e. A Reservoir Pressure Report, Form 10-412, shall be utilized for all surveys; all relevant data shall be
attached to the report. The data submitted shall include, at a minimum, rate, pressure, depth, fluid
gradient, temperature, and all other well conditions necessary for a complete analysis of each survey
being conducted.
f. The results and data from any special reservoir pressure monitoring tests or surveys shall also be
submitted in accordance with paragraph (e) of this rule.
Rule 7 - Gas -Oil Ratio Exemption
Wells producing from the ROP are exempt from the gas -oil -ratio limits of 20 AAC 25.240(a) so long as the
provisions of 20 AAC 25.240(b) apply.
Rule 8 - Annual Reservoir Review
An annual reservoir surveillance report must be filed by April 1st of each year and include future ROP
development plans, reservoir depletion plans, and surveillance information for the prior calendar year,
including:
a. The voidage balance, by month, of produced fluids and injected fluids;
b. A summary and analysis of the reservoir pressure surveys within the pool;
c. The results and, where appropriate, an analysis of production and injection log surveys, tracer
surveys, observation well surveys, and any other special monitoring;
d. A review of pool production allocation factors and issues over the prior year;
e. A review of the progress of the enhanced recovery project.
Rule 9 - Annular Pressures
a. At the time of installation or replacement, the operator shall conduct and document a pressure test of
tubulars and completion equipment in each development well that is sufficient to demonstrate that
planned well operations will not result in failure of well integrity, uncontrolled release of fluid or
pressure, or threat to human safety.
b. The operator shall monitor each development well daily to check for sustained pressure, except if
prevented by extreme weather conditions, emergency situations, or unavoidable circumstances.
Monitoring results shall be kept available for AOGCC inspections.
c. The operator shall notify the AOGCC within three working days after the operator identifies a well as
having (i) sustained inner annulus pressure that exceeds 2,000 psig or (ii) sustained outer annulus
pressure that exceeds 1,000 psig.
d. The operator shall submit in an Application for Sundry Approvals (Form 10-403) a proposal for
corrective action or increased surveillance for any development well having sustained pressure that
exceeds a limit set out in paragraph (c) of this rule. The AOGCC may approve the operator's
proposal or require other actions or surveillance, including a mechanical integrity test or other
approved diagnostic tests. The operator shall give sufficient notice of the testing schedule to allow the
AOGCC to witness the test.
e. If the operator identifies sustained pressure in the inner annulus of a development well that exceeds
45 percent of the burst pressure rating of the well's production casing for inner annulus pressure, or
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 29 of 53
sustained pressure in the outer annulus that exceeds 45 percent of the burst pressure rating of the
well's surface casing for outer annulus pressure, the operator shall notify the AOGCC within three
working days and take corrective action. Unless well conditions require the operator to take
emergency corrective action before AOGCC approval can be obtained, the operator shall submit in
an Application for Sundry Approvals (Form 10-403) a proposal for corrective action. The AOGCC may
approve the operator's proposal or require other corrective action, including a mechanical integrity
test or other diagnostic tests. The operator shall give the AOGCC sufficient notice of the testing
schedule to allow the AOGCC to witness the tests.
Except as otherwise approved by the Commission under (d) or (e) of this rule, before a shut-in well is
placed in service, any annulus pressure must be relieved to a sufficient degree: (1) that the inner
annulus pressure at operating temperature will be below 2,000 psig, and (2) that the outer annulus
pressure at operating temperature will be below 1,000 psig. A well subject to (c) but not (e) of this
rule may reach an annulus pressure at operating temperature that is described in the operator's
notification to the AOGCC under (c) of this rule, unless the AOGCC prescribes a different limit.
For purposes of this rule,
i. inner annulus means the space in a well between tubing and production casing;
ii. outer annulus means the space in a well between production casing and surface casing; and
iii. sustained pressure means pressure that (A) is measurable at the casing head of an annulus, (B) is
not caused solely by temperature fluctuations, and (C) has not been applied intentionally.
H
Rule 10 - Production Surface Commingling, Measurement and Allocation
a. Production from ROP maybe commingled on the surface with production from the other pools within
the GMTU as well as with production from the CRU.
b. Wells must be tested monthly.
Rule 11 Administrative Action
Upon proper application, or on its own motion, and unless notice and public hearing are otherwise
required, the Commission may administratively waive the requirements of any rule stated herein or
administratively amend this order as long as the change does not promote waste or jeopardize correlative
rights, is based on sound engineering and geoscience principles, and will not result in an increased risk of
fluid movement into freshwater aquifers.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 30 of 53
List of Acronyms
Alaska Oil and Gas Conservation Commission (AOGCC)
Alpine Central Facility (ACF)
Arctic Slope Regional Corporation (ASRC)
Area Injection Order (AIO)
Barrel (BBL)
Bear Tooth Unit (BTU)
Blowout Prevention Equipment (BOPE)
Bureau of Land Management (BLM)
Centipoise (cP)
Colville Delta 5 (CD5)
Colville River Unit (CRU)
ConocoPhillips Alaska, Inc. (CPAI)
Conservation Order (CO)
Emergency Shutdown (ESD)
Enhanced Oil Recovery (EOR)
Enriched Water Alternating Gas (EWAG)
Extended Reach Drilling (ERD)
Formation Integrity Test (FIT)
Gas -Oil Contact (GOC)
Gas Oil Ratio (GOR)
Greater Moose's Tooth 1 (GMT1)
Greater Moose's Tooth 2 (GMT2)
Greater Moose's Tooth 2 Expansion (GMT2X)
Greater Moose's Tooth Unit (GMTU)
Highly Radioactive Zone (HRZ)
Lookout Oil Pool (LOP)
Managed Pressure Drilling (MPD)
Measured Depth (MD)
Millidarcy (mD)
Million Barrels (MMBBLS)
Million Barrels of Oil (MMBO)
Million Standard Cubic Feet (MMSCF)
Modular Formation Dynamics Testing (MDT)
Moose's Tooth 6 (MT6)
Moose's Tooth 7 (MT7)
Oil -Water Contact (OWC)
Original Gas -in -Place (OOIP)
Original Oil -in -Place (OOIP)
Participating Area (PA)
Pounds Per Square Inch (PSI)
Remote Electrical Interface Module (REIM)
Rendezvous Oil Pool (ROP)
Reservoir Barrel (RB)
Standard Cubic Feet (SCF)
Steerable Drilling Liner (SDL)
Stock Tank Barrel (STB)
Stock Tank Barrel Oil (STBO)
Thousand Cubic Feet of Gas (MSCF)
Trans -Alaska Pipeline System (TAPS)
Trillion Cubic Feet (TCF)
True Vertical Depth Subsea (TVDss)
Upper Jurassic Unconformity (UJU)
Working Interest Owners (WIO)
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 36 of 53
APPENDIX 2 — FORMATION WATER SALINITY
Salinity Calculations
In the Greater Moose's Tooth Unit, Rendezvous Pool area, several wells have been logged from surface
through the reservoir zone. No clean, porous sands with calculated salinities of less than 10,000 ppm
TDS were present below the permafrost zone. Within the Rendezvous Pool sands penetrated include: K-
3, K-2, Albian 97, Albian 96, Albian 95, and Albian 94 with depths ranging from 2933 ft to 3941 ft TVDSS.
Salinity calculations made on the available intervals within the Rendezvous pool are shown in the table
below and Figure 15.
Well
Stratigraphic Zone
Depth (MD)
TDS
Rendezvous 2
K-3
3056-3170 ft
18,000ppm
Rendezvous 2
K-2
3331-3406 ft
16,000ppm
Rendezvous 2
Albian 97
3554-3640 ft
18,000ppm
Rendezvous A
Albian 96
3655-3699 ft
17,000ppm
Spark 1
Albian 95
3820-3853 ft
24,000ppm
Rendezvous 3
Albian 94
3916-4045 ft
13,000ppm
In addition to wells within the Rendezvous Pool, a regional investigation was done to investigate
additional sands and further verify formation salinity. No clean, porous sands with calculated salinities of
less than 10,000 ppm TDS were present below the permafrost zone regionally. Sands penetrated
include: C-40, C-30, K-3, K-2, Albian 97, Albian 96, Albian 95, and Albian 93. Salinity calculations made
on the available intervals within the Rendezvous pool region are shown in the table below.
Mitre1PB1
C-40
1700-1860ft
31,000ppm
Mitre 11PB1
C-30
2248-2276 ft
27,000ppm
Tiqmiaq 2
K-3
2380-2500 ft
14,000ppm
Flat Top 1
K-2
3814-3840 ft
13,000ppm
Flat Top 1
Albian 97
4030-4160 ft
13,000ppm
Lookout 2
Albian 96
4100-4200 ft
17,000ppm
Lookout 1
Albian 95
4400-4459 ft
16,000ppm
Tiqmiaq 6
Albian 93
3240-3260 ft
17,000ppm
The Methodology used and results obtained from salinity calculations are as follows.
The calculations use
the standard Archie correlation and log derived data
to obtain a Rwa value using
the following formula:
Rwa _ Om Rt
a
Rwa Resistivity of water necessary to make a zone 100% water bearing
0 Porosity in decimal from logs
Rt Formation resistivity from logs
m Cementation exponent
a Tortuosity (assumed to be 1.0 per Archie correlation)
There is no cementation exponent information from the wells used for this study but such data does exist
in the C132-11 Qannik well. This Qannik well is the analog for the wells used for this study. Formation
data from the CD2-11 shows m to be 1.8, hence range of 1.8-2.0 was used for the analysis that follows.
For very shallow unconsolidated formation intervals, C40 and C30, an m value of 2 was used in the
calculations.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 37 of 53
Well: Mitre 1PB1
Formation: C40 (Well depth 1700-1860ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 1.86ohm-m, Raw density = 2.019/cc, m = 2, Porosity = (2.65-2.01)/(2.65-1) = 0.388v/v.
The calculation yields a Rwa equal to 0.28. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 52degF, gives a salinity of 31,000 ppm NaCl equivalent.
Well: Mitre 1PB1
Formation: C30 (Well depth 2248-2276ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 3.43ohm-m, Raw density = 2.19g/cc, m = 2, Porosity = (2.65-2.19)/(2.65-1) = 0.279v/v.
The calculation yields a Rwa equal to 0.267. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 62degF, gives a salinity of 27,000 ppm NaCI equivalent.
Well: Tinmiaq 2
Formation: K3 (Well depth 2380-2500ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log.
Rt = 3.75ohm-m, Raw density = 2.15g/cc, m =1.8, Porosity = (2.65-2.15)/(2.65-1) = 0.303v/v.
The calculation yields a Rwa equal to 0.437. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 89.7degF, gives a salinity of 11,500 ppm NaCl equivalent.
Well: Flat top 1
Formation: K2 (Well depth 3814-3840ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 5.44ohm-m, Raw density = 2.29g/cc, m =1.8, Porosity = (2.65-2.29)/(2.65-1) = 0.218v/v.
The calculation yields a Rwa equal to 0.351. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 100degF, gives a salinity of 13,000 ppm NaCl equivalent.
Well: Flat Top 1
Formation: Albian 97(Well depth 4030-4160ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 6.46ohm-m, Raw density = 2.33g/cc, m =1.8, Porosity = (2.65-2.33)/(2.65-1) = 0.194v/v.
The calculation yields a Rwa equal to 0.337, Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 100degF, gives a salinity of 13,000 ppm NaCl equivalent.
Well: Lookout 2
Formation: Albian 96 (Well depth 4100-4200ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 4.92ohm-m, Raw density = 2.33g/cc, m =1.8, Porosity = (2.65-2.33)/(2.65-1) = 0.194v/v.
The calculation yields a Rwa equal to 0.257. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 105degF, gives a salinity of 17,000 ppm NaCl equivalent.
Well: Lookout 1
Formation: Albian 95 (Well depth 4400-4459ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 5.21ohm-m, Raw density = 2.306g/cc, m =1.8, Porosity = (2.65-2.306)/(2.65-1) = 0.208v/v.
The calculation yields a Rwa equal to 0.310. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 89.7degF, gives a salinity of 16,000 ppm NaCl equivalent.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 38 of 53
Well: Rendezvous 3
Formation: Albian 94 (Well depth 3916-4045ft)
Calculation:
Rt is taken from LWD resistivity tool and Porosity comes from the density log
Rt = 6.05ohm-m, Raw density = 2.31 g/cc, m =1.8, Porosity = (2.65-2.31)/(2.65-1) = 0.206v/v.
The calculation yields a Rwa equal to 0.352. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 98degF, gives a salinity of 13,000 ppm NaCl equivalent.
Well: Tigmiaq 6
Formation: Albian 93 (Well depth 3240-3260ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log
Rt = 4.74ohm-m, Raw density = 2.30g/cc, m =1.8, Porosity = (2.65-2.30)/(2.65-1) = 0.212v/v.
The calculation yields a Rwa equal to 0.291. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 89degF, gives a salinity of 17,000 ppm NaCl equivalent.
Well: Rendezvous A
Formation: Albian 96 (Well depth 3655-3699ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log
Rt = 6.454ohm-m, Raw density = 2.35g/cc, m =1.8, Porosity = (2.65-2.35)/(2.65-1) = 0.18v/v.
The calculation yields a Rwa equal to 0.3. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 86degF, gives a salinity of 17,000 ppm NaCl equivalent.
Well: Rendezvous 2
Formation: K-3 (Well depth 3056-3170ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log
Rt = 5.5 ohm-m, Raw density = 2.24g/cc, m = 2, Porosity = (2.65-2.24)/(2.65-1) = 0.25v/v.
The calculation yields a Rwa equal to 0.34. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 72degF, gives a salinity of 18,000 ppm NaCl equivalent.
Formation: K-2 (Well depth 3331-3406ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log
Rt = 4.8 ohm-m, Raw density = 2.26g/cc, m = 2, Porosity = (2.65-2.26)/(2.65-1) = 0.24v/v.
The calculation yields a Rwa equal to 0.36. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 78degF, gives a salinity of 16,000 ppm NaCl equivalent.
Formation: Albian 97 (Well depth 3554-3640ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log
Rt = 5.5 ohm-m, Raw density = 2.32g/cc, m = 1.8. Porosity = (2.65-2.32)/(2.65-1) = 0.20v/v.
The calculation yields a Rwa equal to 0.30. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 83degF, gives a salinity of 18,000 ppm NaCl equivalent.
Well: Spark 1
Formation: Albian 95 (Well depth 3820-3853ft)
Calculation:
Rt is taken from Array Induction tool and Porosity comes from the density log
Rt = 5.54ohm-m, Raw density = 2.38g/cc, m =1.8, Porosity = (2.65-2.38)/(2.65-1) = 0.16v/v.
The calculation yields a Rwa equal to 0.21. Using chart Gen-9 from Schlumberger chart books with a
formation temperature of 90degF, gives a salinity of 24,000 ppm NaCl equivalent.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 39 of 53
Water sample analyses
A water sample was obtained from Ti0miaq 6 well during a production test. The tested interval is 3440 to
3460 feet (Albian 93 interval) and lab measured salinity is 15,OOOppm (conductivity of 25200 ps/cm).
Rendezvous Area Type Log — Shallow Salinity Analysis Summary
Permafrost
deville Group (Clay with
terbedded silt & minor
nds)
enushuk Group (K-3 to Albian
i; top sets, shallow marine,
is/shales and thin fine-
ained sands
)rok (Albian slope & deep
anne shales with inter-
>dded sands)
S Fili
RZ/Kaiubik/Miluveach Shales
Ipine C Sandstone (Target)
Figure 15: Formation water salinity summary with the Rendezvous type log
(Rendezvous 2) and lithology summary.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 40 of 53
Appendix 3 — Annular Disposal of Drilling Waste at CD5
ConocoPhillips
November 7, 2014
Cathy P. Foerster
Commissioner, Chair
Alaska Oil and Gas Conservation Commission
333 W. 7th Avenue, Suite 100
Anchorage, Alaska 99501.3539
Re: Annular Disposal of Drilling Waste at CD5
Dear Commissioner Foerster:
Misty J Alex®
WNS Dovelopmont Manager
P.O. Box 100360
Anchorago, AK 99510
(907) 265-6822(phone)
misty.i.alexa@conocophillips.com
Hand Delivered
ConocoPhillips, as operator of the Colville River Unit (CRU) on the North Slope, Is engaged
in the development of a new drilisito, called CDS. This new development will make use of
existing infrastructure and bring additional oil production to TAPS. ConocoPhillips plans to
commence drilling in April 2015, and to see first production in December 2015. The plan for
CD5 is predicated on an expectation that drilling muds and cuttings (drilling waste) will be
pumped into the annuli of development wells on the pad, an Alaska Oil and Gas
Conservation Commission (AOGCC) approved practice that has worked well at the CRU for
many years. By this letter, ConocoPhillips is notifying AOGCC of our intent to seek
authorization for annular disposal of drilling waste at CD5 under 20 AAC 25.080 when
drilling begins. This notice is based on our understanding that AOGCC may wish to hold a
hearing on this topic before proceeding to review applications for annular disposal
authorization under the applicable regulation and according to the normal process.
On January 29, 2013, ConocoPhillips provided a CD5 Drillsite Project Overview to AOGCC
staff. In this meeting and in follow-up informal discussions as recently as July 16, 2014,
AOGCC staff expressed caution and informed ConocoPhillips of potential future changes
within the AOGCC regarding authorization for annular disposal of drilling waste. To avoid
potential delay in CD5 development, ConocoPhillips seeks to identify any potential issues
with respect to authorization of annular disposal. If a hearing is desired by AOGCC,
ConocoPhillips strongly prefers that it be held soon for planning purposes, before drilling
begins at CD5.
The regulation governing annular disposal, 20 AAC 25.080, requires well -specific
information in the request, and that information is not available until the well that will be used
for disposal has been drilled. So. ConocoPhillips cannot request authorization for annular
disposal until drilling begins at CD5. Yet for planning purposes, ConocoPhillips has a strong
interest in confirming the expectation that a future request for annular disposal authorization
will be considered by the AOGCC under the existing regulations and in a manner consistent
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 41 of 53
with past practice at other CRU drillsites. If future permitting for annular disposal at CD5 will
be more restrictive, the implications could be significant and wide-ranging.
Annular disposal of wastes from the drilling of development wells is an agency approved
practice that dates back decades. The practice is regulated by the AOGCC as an activity
incidental to the drilling of a well, outside the scope of the federal underground injection
control (UIC) program. This understanding of the nature of annular disposal was
documented in the Memorandum of Agreement between the AOGCC and the U.S.
Environmental Protection Agency (EPA), Region 10, which was signed by the EPA on
November 21, 1991, and signed by the AOGCC on November 22, 1991. Section 10 of that
Memorandum provides: "The pumping away of drilling muds ... into an exploration well or
stratigraphic test well, or into the annuli of any well approved in accordance with 20 AAC
25.005, is an operation incidental to the drilling of the well, and is not a disposal operation
subject to regulation as a Class II well'
Since then, the AOGCC has adopted regulations that provide for the authorization of
annular disposal. The regulations were adopted in 1996, amended in 1999, and are codified
at 20 AAC 25.080. Subsection (a) of that regulation prohibits annular disposal except as
authorized by the AOGCC. Subsection (b) lists the extensive, detailed information that an
operator must provide in connection with a request for authorization of annular disposal.
Subsection (c) provides that the AOGCC "will authorize" annular disposal 0 the commission
makes certain determinations. That subsection, 20 AAC 25.080(c), reads as follows:
The commission will authorize an annular disposal operation described in the
Application for Sundry Approvals, as that application has been supplemented under
this section, and subject to any modifications prescribed by the commission, if the
commission determines that the
(1) waste will be adequately confined;
(2) disposal will not
(A) contaminate freshwater, except to the extent allowed under
(e)(91) [presumably, (e)(1));
(B) cause drilling waste to surface;
(0) impair the mechanical integrity of any well; or
(D) damage a producing or potentially producing formation or impair
the recovery of oil or gas from a pool; and
(3) disposal will not circumvent 20 AAC 25.252 or 20 AAC 25.412.
Subsection (d) of the regulation imposes presumptive limits on annular disposal, including a
volume limit of 35,000 barrels per well, and a temporal limit of one year per well. The
remainder of the regulation provides for other potential conditions and Imposes specific
reporting and other obligations on operators in connection with annular disposal.
Annular disposal, as governed by 20 AAC 25.080, has worked well at CRU tot years. It has
allowed for the efficient placement of drilling waste in a manner that avoids the use of
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 42 of 53
reserve pits, and avoids the risks and complications associated with hauling waste in tanker
trucks and the associated transfers. The end result is that drilling fluids and cuttings that are
generated in the course of drilling a well are generally disposed of in the annuli of wells on
the same pad. This is a good solution for a place like the CRU, which has an extremely
small gravel footprint and does not have permanent road access to landfill facilities, which is
the common disposal option for drilling wastes in the Lower 48.
Annular disposal helps maintain the capacity of permitted Class I and Class 11 UIC wells for
disposal of substances other than drilling waste, which is especially important at CRU,
where a lack of a road system severely limits alternative options in case a UIC well
encounters problems. ConocoPhillips believes the incident -free history of annular disposal
at CRU supports continuation of the practice at the new CD5 pad. But because the UIC
wells are needed for disposal of non -drilling waste, it is important to have options for drilling
waste disposal. The large amount of drilling waste slurry anticipated from CD5, if injected at
a UIC dispose] well at CD1, would increase the risk of a problem at that well. If a UIC
disposal well is removed from service, it poses a very real risk of having to shut down not
just drilling operations but also other operations at CRU, because without road access to
other waste disposal options, there may be no place to put wastes that must go in a UIC
well. Authorization for annular disposal of drilling waste at CRU provides important
flexibility, and the option should continue with the C05 development.
Geology in the vicinity of CD5 presents a good opportunity to use annular disposal in
compliance with the criteria of 20 AAC 25.080 and good oiHieid engineering practices. CD5
is premised on developing existing CRU reservoirs. ConocoPhillips has shared information
on CD5 geology with AOGCC staff, and no geological Impediment to annular disposal has
been identified. The AOGCC Disposal Injection Order No. 18 for the Colville River Unit
expressly notes, at finding 14, that ConocoPhillips plans annular disposal of muds and
cuttings at CRU, and Rule 3 of that order even requires notice to AOGCC 0 the operator
expects to initiate routine disposal of drilling waste into the approved Class II well.
Annular disposal of drilling mud and cuttings has been an integral and successful part of
CRU development. Over 85 CRU wells have been permitted under 20 AAC 25.080 and
successfully used for annular disposal in the CRU to dispose of 2,600.000 barrels of muds
and cuttings. This has been a successful program because ConocoPhillips has rigorously
complied with 20 AAC 25.080. A key to ensuring that drill cuttings are disposed into the
intended zone is real time monitoring of the calculated bottom hole injection pressure (real
time fluid density, wellhead pressure and friction calculation). The calculated BHIP is
continuously monitored against the surface shoe formation integrity pressure to ensure the
confining zone's integrity is not compromised.
Conservation Order 443 for the Alpine Oil Pool in the Colville River Field recognizes at
finding 14 that the operator intends to dispose of drilling waste in the annuli of wells
authorized by the Commission, and recognizes at finding 21 that the available data indicate
annular disposal can occur without causing fractures near the surface casing shoe.
ConocoPhillips is not aware of any change that would make the plan for annular disposal
any less viable now for CD5 than it has been for other pads at CRU. If a future request for
authorization for annular disposal at C05 is considered in a manner consistent with other
applications at CRU in the recent past, ConocoPhillips expects to be able to receive
authorization for annular disposal.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 43 of 53
However, 0 the AOGCC intends to treat an annular disposal request for CD5 differently than
such requests have been treated for other CRU pads, then ConocoPhiilips would like to
understand the basis for this change as early as possible. At this point, ConocoPhillips does
not see any option at CD5 that could serve as a good substitute for annular disposal, so if
annular disposal is preemptively precluded, the planning basis for CD5 development would
have to be reconsidered.
AOGCC staff has expressed a desire for a public hearing to discuss annular disposal at
CD5, but a hearing is not required by the regulations, and should not be necessary in our
view. ConocoPhiilips does not oppose a hearing, however, and to help progress this issue
we are providing this notice and background information to give the AOGCC the opportunity
to hold a hearing, if it chooses to do so, on the issue of annular disposal at CD5.
If you have any questions or need further information please contact Sam Johnstone (907)
263-4617.
Sincerely,
Misty Alexa
WNS Development Manager
cc:
Anadarko E&P LLC
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 44 of 53
Appendix 4 — Docket OTH 14-026 Annular Disposal of Drilling Waste at CD5
1'I IF .14NI P.
01ALASKA
(;()VI 14NOR I411I 10ALKLIt
Ms. Misty J Alcxa
WNS Developinem Manager
ConocoPhillips Alaska, Inc.
P.O. Box 100360
Anchorage, AK 99510-0360
Alaska Oil and Gas
Conservation Conunissiou
:I:LM1 wcH Somadh Avrnnee
Mch,uosw, Alasko 99501 3577
Moira: WU.'7/9. 1433
tax: 901216.1547
January 16,2015 www.,uKlcr.aWcto Spv
CERTIFIED MAIL —
RETURN RECEIPT REQUESTED
7012 3050 0001 4812 7058
Re: Docket OTH 14-026
Annular Disposal of Drilling Wasic rat CD5
Dear Ms. Alexa:
Based upon the evidence presented by Conoco Philips Alaska Inc. (CPAI), at the January 5, 2015
hearing, until such time as CPAI seeks authorization for annular disposal the Alaska Oil and Gas
Conservation Conunission (AOGCC) will take no further action on the matters raised in CPAI's
November 7, 2014 letter to AOGCC.
DONE at Anchorage, Alaska and dated January, 16, 2015.
Cath . Foerster
Chai , Commissioner
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 45 of 53
Appendix 5 — CDS-93 Annular Disposal Sundry and Approval
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 46 of 53
Note to File
CRU CD5-93 (PTD 221-073)
February 16, 2021
Re: ConocoPliflips' Application for Sundry Approval for Amular Disposal of Drilling Wastes within
Well CD5-93
Request
ConocoPhillips requests approval to dispose of 35,000 barrels of drilling waste in well C'RU CD5-93
Recommendation
Approve ConocoPhillips' request
Conclusions
1. In CD5-93. the surface casing shoe is set at 2,194' measured depth (,AID: equivalent to-2,115' true
vertical depth subsea), near the base of a 450-foot thick shale-, claystone-, and siltstone-dominated
interval that persists throughout the area. This interval will prevent upward migration of injected fluids.
2. There appears to be a sufficient volume of sandstone and sandy siltstone open to the annulus of this
well to accept the proposed injected fluids-
3- Lower confining layers are sufficiently thick and laterally persistent to ensure injected materials remain
within the disposal interval.
4. There are no potential USDA's in this area. There are no water wells within one mile of CD5-93.
5. Correlative rights will be protected.
6. The proposed disposal injection operations will not affect potential oil or gas reservoirs-
7- The volume of sediments most strongly impactedbytheproposed annular injection operation will likely
lie within about 100' of the CD5-93 weeilbcre.
S. Injected fluids will likely reach one or more nearby wells that have open annuli beneath their surface
casing shoes. However. if this occurs. surface casing, surface casing cement (to surface), and thick
laterally continuous confining layers of shale. claystone. and siltstone will ensure injected fluids remain
within the disposal interval -
Discussion
ConocoPhillips' application was renewed along with records from Cohille River Unit CD5-93 (CD5-93).
nearby development wells, and exploratory well Nuigsut 1, which is located 1-1/2 miles to the northeast -
The discussion that follows is based on information, well logs, and mud logs from these wells. An index
map is provided in figure 1, below.
The proposed annular disposal injection interval in this well lies in the Torok and Seabee Formations within
Section 7, TI IN, ME, Umiat Meridian- which is about 2 miles from the current e2derior boundary of the
Colville River Unit The surface casing shoe of CD5-93 lies at 2,194' MD (-2,l l5' TVDSS), near the base
of a 450-foot thick interval that is dominated by shale, claystone, and siltstone and is continuous throughout
3 Unless nds¢vivarced, aII depda pres®eed hsem ns posith'e mte:�srepreseut auassed depsh m feet All depths expressed as cep&,
mtegecs tepreseai Ave rsi al depth(m feet) belo*mess sea tesvl(man lam, lmr Crater, herein termed = a v al feet subsea, whtch is
abbmuted' Tt•DS5'). ,V! mi:laesua se aspressed as msm.e imeress, nidch represent true s eeticnl feet A[I hortaaatat distances as
e�p¢esud asposima msegm. nfach repres�t Ceet
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 47 of 53
CD5-93 Annular Disposal February 16, 2021
Note to File Page 2 of 5
the area. This interval will provide upper confinement for fluids disposed in the annulus of the well (see
Figure 2, below).
In CD5-93, the annulus open to disposal extends downward from the surface casing shoe at 2194' N D
(-2,115' TVDSS) to the top of second -stage cement for the 7-518" casing string, which is estimated to lie at
4,5361vm (-3,849- TVDSS). The portion of the open annulus that will most likely accept the injected waste
is a 185-foot thick interval that contains several 1- to Moot thick beds of sandstone and sandy siltstone that
lie below the surface casing shoe between about 2,332' MD (-2,250' TVDSS) and 2520' MD (-2,435'
TVDSS) The aggregate thickness of these thin, potential receptor layers is about 30'_ These layers are
separated by thin claystone intervals. Beneath the disposal interval are several intervals of claystone that
are continuous throughout the area and will provide lower confinement for any injected wastes.
COS-93
Top of r , Open :lus
Second -Stage ``�
Cement for t
C .
intermediate ,'....OS93
Crimes ♦ Surface
. Casng
. shoe f«
CUS•93
NORTH Mast U
1 p l
Interval i ! surface Casing
0-S00 feet �1 Shoe locations
♦;
AL A
Figure 1. CD5-93 Index hlap
(The magenta -colored line deports the path of the cross-section displayed in Figure 2.)
The index reap above displays trajectories for all wells drilled from the Colville River Unit CD5 Drill Site.
The locations of the surface casing shoes for all well bores are depicted with green -colored triangles. The
calculated top of second -stage cement for the CD5-93 intermediate casing string (4536' MD.-3.849'
TVDSS) is indicated by the orange -colored semi -circle. Thirty three wells are currently open to these same
strata wathin the'./4-mile radius area of review: CD5-01, CD5-02, CD5-03, CD5-04, CD5-05, CD5-06, CD5-
07, CD5-08, CD5-09, CD5-10, CD5-I1, CD5-12, CD5-17, CD5-18, C135-19, CD5-20, CD5-21, CD5-22,
CD5-23, CD5-24. CD5-25. CD5-26, CD5-28, CD5-90. CD5-92. CD5-96, CD5-98. CD5-99A. CD5-313.
CD5-314, CD5-314X CD5-315, and CD5-316.
Figure 2, below, presents a swxmral cross-section view of CD5-93 and nearby wells CD5-19 and CD5-01,
which were logged to the ground surface. Resistivity measurements indicate that the base of permafrost
occurs at about-1,250' in the CD5 Drill Site area, which is about 865' above the CD5-93 surface casing
shoe.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 48 of 53
CD5-93 Annular Disposal
Note to File
February 16, 2021
Page 3 of S
SW s1r1a1
s971m: w1o'.+auexr9a 2121 solwrorxuc
r, zxxn9 z+sovc NE
f.Pol C1iS 19 590' CNU G]S33 66D' CIN CIMOI
r—
e ."�; .. '<t •_. _ - .•anti __ _. .
a
4" Surface
ssa Casing -la�,. C
% .. Cement 4 _ -3�� _. Surfacesao
f� __— Surface Casing
'- Casing ... 1�
•faoo M permafrost `.. Cement sceaees' Cement
Base at Zy�.. 777`iiiflf 'iDOo
_ WEISS
_1500 .15M
Upper _ -Upper
Corfiming —_ G_onfining ' - t Surface
.MD - Interval 'Y �} interval �� � Casing
♦-^� Shoe .wao
_ Most Likety
Disposalr—
zwn Interval
.300 lAV/er r Open Anmdus
- Confining
Leven
i
3505 = Top of Cement ; 3550
4,536' MD,
t"-3,849' TVDSS ..
4M
Figure 2. C115-93 Area: Structural Cross-section
(Depth scale represents true vertical feet. Horizontal separation footages shown
between wells are the approximate distances between the surface casing shoes.)
Mud togs were recorded in only two wells drilled at the CDS Drill Site. CD5-04 and CDS-313, that were
drilled through the shallow, geologic section using somewhat similar drilling mud weights (typically 9.8 to
99 pounds per gallon). These mud logs suggest the shallow geologic section in the area contains
predominantly methane gas. with minor amounts of ethane, propane_ and butane_ The shallowest
occurrences of more significant amounts of methane encountered in these wells (arbitrarily placed at 20
units of gas --equivalent to 4.000 ppm—on the mud log) were about -1,850"and 2.000 respectively. So.
the entire proposed annular disposal interval likely contains small, non-commefcial amounts of methane
gas.
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 49 of 53
CD5-93 Ammar Disposal February 16, 2021
Note to File Page 4 of 5
Unfortunately, oil shores are not recorded on the mud logs obtained in CD5-04 and CDS-313, likely due to
the use of oil -base drilling mud. In ARCO's Nmgsut 1 exploratory wvell, located about 1-112 miles to the
northeast, the shallowest oil shoe° was encountered at 3.990' XM (-3,930' T4'DSS). with a second show
encountered at 4,115' MD (-4,055' TVDSS). The mud logging geologists rated these shows as fair to poor
in quality. These oil shows occur in thin sandstones that are encapsulated above and below by claystone
and mudstone. These oil show indicate the presence of only trace to minor quantities of oil in the geologic
strata that may be affected by annular disposal in CD5-93. These shows do not represent commercial
quantities of oil.
Supporting documentation to ConocoPhillips' annular disposal applications states: "There are no USDW
aquifers in the Colville River Unit" This is correct Conclusion 3 of Area Injection Order No. 18, which
governs the Alpine Oil Pool, states that there are no USDWs beneath the permafrost within the Colville
River Unit. The Alaska Department of Natural Resources' Alaska ]supper web application, accessed
February 16, 2021. confirm that there are no publicly recorded water wells within one mile of CD5-93.
200
Injected Fluid vs Affected Area Surrounding
CRU CD5-93 Welibore
{AftwVtrne; 30 0%pomoft, 50%naive B,W ftpWem", anreoWe sYWWW 30 Pttigh)
0 51000 10,am 15,000 20.000 25.000 30.000 35.000
AO ffl of majeoted Fluid tGa ism
Figure 3. C105-93 .Area Lik-elc Affected by annular Injection
(.Assuming uniform, piston-Ifim, radial displacement of 90% of native formation fluids)
The gamma ray well log curve recorded in CD5-93 indicates that an aggregate total of about 30 true vertical
feet of sandstone and sandy siitstone are present within the most likely disposal imervaL Inspection of
density porosity logs from correlative strata in nearby wells suggests porosity averages about 300/a at this
depth_ Based on these values, the volume of rock that will receive 35,000 barrels of injected fluids lies
within a radius of about 1 20'fromthe CDS-93 wellbore, assuming uniform, radial, piston -like displacement
ofhalf of the native formation fluids (Figure 3. above) The surface casing shoes of the three closest wells—
CD5-07, CD5-10, and CD5-i I —are located between about 150' and 250' from the most likely disposal
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 50 of 53
CD5-93 Annular Disposal February 16, 2021
Note to File Page 5 of 5
interval within CD5-93. However, review of the daily drilling summaries indicates that surface casings in
these three wells mere cemented to surface pith full returns. If fluids injected into CD5-93 reach
uncemented annuhbeoeath the surface casing shoes in any ofthe three nearby wells, surface casing, surface
casing cement and thick, laterally continuous confining layers will ensure those fluids remain within the
inteuded interval-
Srmmary
The limited volume of rock that will be affected by this proposed annular disposal operation is situated
beneath 1,250' of permafrost and is bounded above and below by continuous confining layers of shale,
claystone, and siltstone. The disposal interval lies inside the Colville River Unit. far from any external
property lines. so correlative rights are not a concern There are no freshwater aquifers present and there
are no water wells within one mile of CD5-93_ The disposal interval does not include any potentially
commercial hydrocarbon accumulations. Surface casing. surface -casing cement (to surface), and laterally
continuous layers of shale, claystone. and siltstone will prevent injected fluids from migrating out of zone.
I recommend approving the proposed annular disposal operations within CRU CDS-93 to the requested
limit of 35,000 barrels.
Steve Davies
Senior Petroleums Geologist
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 51 of 53
Note to File
CD5-93 (PTD 2200730, Sundry 321-082)
Colville River Unit (Alpine Oil Pools) ConocoPhillips Alaska, Inc
ConocoPhillips has made application to authorize annular disposal in the subject weft. This
document examines the pertinent information for the well and recommends approval of
ConocoPhillips' request.
— No unusual events were reported while drilling the surface hole of the well (CD5-93).
— 10 3/4" Surface casing was cemented to surface successfully with no losses experienced.
Cement report put excess cement to surface of 54 bbis with 400 bbi Class G cement pumped.
No problems reported-
- On the initial Formation Integrity Test (FIT) for the surface casing shoe dated 1/18/2021, the
pressure slope rises smoothly with test stopping at 1.5 bbl pumped and 810 psi to yield the
desired 16.7 ppg EMW. The pressure declined slightly from 810 to 700 psi (15.75 ppg EMW)
during the 10 minute shut in period with the 1.0 bbl being bled back. The initial FIT indicates
that the surface casing shoe is well cemented.
An open hole injectivity test was completed on 1/29/2021 prior to running and cementing the
7.625" casing with a depth of the casing shoe of 2195 It MD/ 2188 ft TVD and an open hole to
est 4961 R MD yielding a 13.4 ppg EMW. The test showed pressure rising steadily with the
slight tangent change at the 13.4 ppg EMW and a sharp break over point at approximately
13.67 ppg EMW.
— The 7.625" casing was run and successfully cemented with a two stage job and shoe of
14525 ft. First stage cement was pumped and was estimated as 14525 to TOC 11650 ft MD_
Cement toot at 6050 ft was opened and the 2`a stage pumped without problems with that TOC
estimated at 4536 ft MD. A "SonicScope Top of Cement" evaluation log processed on
2/1/2021 was run from 2475 ft MD to TO and shows a TOC of 11650 ft with improving cement
to shoe. The sonic tool ran out of memory passing up at 4600 ft but indicated good cement
from 6050 to approx. 4600 ft
—There are multiple wells currently drilled or planned to be drilled within ''/. mile radius of CD5-
93 and the CPAI application contains supporting cementing and LOT well information and
mentions that well and cementing information is already on file with AOGCC. The surface
shoe of CD5-11 is closest, about 164' distant. AD is already prolific on CD5 and it is expected
to continue with additional CD5 wells. CPA[ is therefore constructing the CD5 wells to be
compliant with AD regulations Examination of the cementing information and LOT data did
not reveal anything to preclude granting CPAI's request_
Based on examination of the submitted information, I recommend approval of
ConocoPhillips' request for the subject well.
Chris Waltace
Sr. Petroleum Engineer
AOGCC
February 16, 2021
C-1UserslsjcarbsleWppDataTocallKicrosoR\Windoii�sTR etCachelContent.OutlookO37BF41,VQ1
10216 CDS-93 note to file.doc
CPAI Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 52 of 53
Appendix 6 — MT6-05 Annular Disposal Sundry and Approval
THE STATE
OfALASKA
GOVERNOR BILL WALKER
Chip Alvord
Drilling Manager
ConocoPhillips Alaska, Inc.
PO Box 100360
Anchorage, AK 99510
Alaska Oil and Gas
Conservation Commission
333 West 7th Avenue
Anchorage, Alaska 99501
Main: 907.297.1433
Fax: 907.276.7542
www.00gcc.aIoska. gov
Re: Greater Mouses Tooth Field, Lookout Oil Pool, MT6-05
Permit to Drill Number: 218-045
Sundry Number: 318-395
Dear Mr. Alvord:
Enclosed is the approved application for the sundry approval relating to the above referenced well.
Please note the conditions of approval set out in the enclosed form.
Per 20 AAC 25.080, only drilling waste may be disposed within the 9-5/8" X 13-3/8" annulus of
well MT6-05.
As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further
time as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC
an application for reconsideration. A request for reconsideration is considered timely if it is
received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if
the 23rd day falls on a holiday or weekend.
Sincerely,
1
Hollis S. French
Chair, Commissioner
DATED this 1 day of November, 2018.
CPA] Application for Pool Rules, Rendezvous Oil Pool
April 12, 2021
Page 53 of 53
FIECENED
STATE OF ALASKA
ALASKA OIL AND GAS CONSERVATION COMMISSION SEP 1 2010
ANNULAR DI SPOS LAPPLICATION 60110 AOGLC
1. Dpmew
3. Parma b Dr10
Nrnc
M-M
ConoeoPlMlllps Alaska
a. API Number:
50.103.213771-00.00
2. Addma:
S. Was
P.O. Bo* 1002e0, A,deape. Abeks
MT"s
8. Rob:
CoMile River Unb- Alone Pod
7. gABrty recoNedi area
S. Slrenyaplac desalpbom
a) All with rAmM ars grader mib:
a) IrdWv9l avpoeed to open amWis:
WIT-03, MT8-08
Taok and Seabee lemeaboa slugs, sllsbrd and sandslone
b) Waab roeeaag ma:
b) wager ealewWM ore rho:
Band Iayern baaa Oro Me marke, b the $resew fowadm
Nab
C)CdNnement
rho SClfader Wllnb,T61011pn1YaiaG MU{aer Wlderand amae away nd deraWaa
a vm,w0ln TamR Fameaen %ease a genre barrier
9. Oepdu b Wee olperamheet
10. Hydrocubar aenan aeeae waa a reaMrg mm:
approoMlaley 1,200' MD and 119V ND
None
I L Prevtwa volume dapoeW Jr, Weeks and dab:
12, Eatlmeled iii derdgr.
13 rdWmus enWpWd peeawa W agree
Nab
deaeWas ralge Rom desel lc 12wga
feet
14. Enameled vokew to be deposed wth k6 request
ter. Fa&b b be deemed:
35,OD0 bble.
Types or waste may be drdlNg mud, drWi g outage, reserve pit Pulds, oamert.
canlerriwbd "hig mud. cmnple ian fk0s, desel. fame0nn Wade associated wlm tue
t8. Eadmated sued dab:
ad ofdtklkt9 a well, dill rip wash Auks, o, m rMsega dorreate weal, water, any
t-Ocp18
added water needed to fa State pumps gof drlNrtgmud or dn6g cutin0s, and omer
substances that the co ninlagunerdetermines on appiksdon are wastes asaodeled with
Vas adof drilling awall parmited under ZO AAC 25A05,
17.AMdananb:
Well SabmaaO Cnduds MDaM 74D) O I.larbm Bad Lop ldagWrod) ❑ F7TI7.W ve OT Graph O'
surf CWrg Cemedlne Gala L)' Ober 9 nrovbw WWWdmtai kir new ered,d davem Ml/e la(n1 andCD2
1B. I haatry oaMy UWI Are forpolig b ktn ail cared b the bestdu,ybwxbA7e.
senak"! ' TW&.
/
Relied Pha,e
Noma: CWp ANad manbec 28"120 Gab: Ie 2al6i
Commisslun Use Orilly
Ca,dbbaa of appmeat lOTnvbW and apprev t
Sibeas form /O ' gz3
nerd leaked: Approval number.
OMM&n ev
Approved by. colifimm m ENE commmi l OWr.
Fore, Was Har. W2004 bubreftimmipftle
DUPLICATE