Department of Commerce, Community, and Economic Development
Alaska Oil and Gas Conservation Commission
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HomeMy WebLinkAbout2011 Pretty CreekHilcorp Alaska, LLC Post Office Box 244027
Anchorage, AK 99524-4027
LU
3800 Centerpoint Drive
.� Suite 100
Anchorage, AK 99503
� Phone: 907/777-8378
February 29, 201 t Fax: 907/777-8310
Daniel T. Seamount, Chairmanommis'°� '
Alaska Oil and Gas Conservatio_,__ e
333 W. 7th Avenue, Suite 100 ! t ks
Anchorage, AK 99501 i
Re: 2011 Annual Performance Report: Material Balance Calculations of
Production and Infection Volumes
Pretty Creek Gas Storage Facility
Pretty Creek Unit #4
Dear Commissioner Seamount:
Attached for your review is the 2011 "Annual Performance Report" for the Pretty Creek
Gas Storage Facility — Pretty Creek Unit #4 (PCU#4), as required by AOGCC Storage
Injection Order No. 4 (SIO#4). This report contains material balance calculations of
production and injection volumes from the inception of primary production, through
2011 gas storage operations.
The 51-5 reservoir in the Swanson River field was in active use for all of 2011 and was
an important component of total gas deliverability for the Cook Inlet. There is one active
well that is used for injection and production — Pretty Creek Unit #4 (aka PCU #4).
Attached find monthly injection and production data for 2011.
Hilcorp has performed material balance calculations on the 51-5 reservoir to provide
assurance of continued reservoir confinement of the gas storage volumes. Supporting
data is attached in numerical and graphical form for the convenience of the reader. As of
December 31, 2011 the estimated reservoir pressure in the 51-5 was approximately 2375
psig as estimated from the attached chart. Notice that one additional shut-in bottom hole
pressure measurement was made in July of 2011. This data point is plotted with the rest
and conforms to the overall curve, indicating continued confinement of the storage gas.
Sincerely,
HILCORP ALASKA, LLC
Luke Saugier
Reservoir Engineer
LS:dma
Attachments
cc: Kevin Tabler
Pretty Creek Unit Gas Storage Reservoir 51-5
2011 production & injection data
Pretty Creek Unit Gas Storage Reservoir 51-1
PCU #4
Monthly
Monthly
Gas
Gas
Zone
Prod
Inj
z
Mcf
Mcf
Jan, 2011
304,777
0
Feb, 2011
246,241
0
Mar, 2011
226,327
0
Apr, 2011
0
253,259
May, 2011
0
221,142
Jun, 2011
0
210,605
Jul, 2011
0
194,995
Aug, 2011
0
188,351
Sept, 2011
0
155,190
Oct, 2011
0
125,962
Nov, 2011
147,547
0
Dec, 2011
0
40,682
Pretty Creek Unit Gas Storage Reservoir 51-1
BHP
Cum
Well
Zone
Date
psig
z
P/z
MMcf
5/6/2004
1334
2/12/2005
871
PCU #4
51-5
9/30/2005
475
0.9440
503
2500
PCU #4
51-5
2/12/2006
825
0.9072
909
2303
PCU #4
51-5
3/24/2006
884
0.9015
981
2252
PCU #4
51-5
12/1/2007
1,632
0.7791
2095
990
PCU #4
51-5
4/8/2009
1,294
0.8671
1492
1456
PCU #4
51-5
7/5/2011
1,638
0.8468
1934
708
PCU #4
51-5
10/15/2010
1,861
0.7647
2434
309
PCU #4
51-5
11/1/2011
1,893
0.7633
2480
387
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