Department of Commerce, Community, and Economic Development
Alaska Oil and Gas Conservation Commission
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HomeMy WebLinkAbout2015 Kenai Gas FieldHilcorp Alaska, LLC
11
February 29, 2016
Mrs. Cathy Foerster, Chair
Alaska Oil and Gas Conservation Commission
333 W. 7`h Avenue, Suite 100
Anchorage, AK 99501
FEB 2 9 2016
Re: Kenai Gas Field
SIO #7
2015 Sterling Pool 6 Annual Performance Evaluation
Dear Commissioner Foerster:
Post Office Box 244027
Anchorage, AK 99524-4027
3800 Centerpoint Drive
Suite 100
Anchorage, AK 99503
Phone: 907/777-8378
Fax: 907/777-8310
Attached for your review is the 2015 Annual Performance Evaluation for the Sterling Pool 6
Gas Storage Reservoir according to SIO #7. This report covers the primary production and
injection period through the 2015 gas storage operations.
Sterling Pool 6 continues to exhibit tank like behavior with neither influx of other fluids nor
loss of storage gas based on the evidence shown in the exhibits below. Injection wells
continue to act as expected based on an injectivity index. Real time downhole pressure
monitoring is possible with shut in tubing pressures of KU 34-31 corrected to reservoir
pressure.
For the annual period ending 12/31/2015 the total volume injected into Sterling Pool 6 was
3,201 MMSCF and production was 8,445 MMSCF. The total native gas withdrawn from
Pool 6 was 4,223 MMSCF with a native gas balance of 2,801 MMSCF. The maximum
reservoir pressure recorded in Pool 6 based on the KU 34-31 monitoring well SITP (shut in
tubing pressure) was 204 psi or a reservoir pressure of 227 psi. This pressure is expected to
be distributed consistently throughout the productive area of Pool 6 and is below the
maximum reservoir pressure of 300 psi as established by rule #4 of SIO 7.
If you have any questions please contact me at (907) 777-8441 or jewingna,hilcor.ccom
Regards,
Jason Ewing
Reservoir Engineer
Hilcorp Alaska
Exhibit #1 — List of wells and service
Exhibit #2 — KU 34-31 Monitoring Well SITP during 2015
Exhibit #3 — Monthly Production and Injection Volumes for 2015
Exhibit #4 — P/z plot for Injection Period 2015
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