Prudhoe Bay Reservoir Development Optimization Scott Digert BP Alaska, Anchorage, AK
[email protected] The Prudhoe Bay Field is the largest field in North America, and is the cornerstone of the 22 oil and gas fields which have been developed on Alaska’s North Slope. It has been developed using five major depletion mechanisms. Technologies developed and implemented at Prudhoe Bay have yielded 30% more recovery to date than the original expectation of ultimate recovery. As the remaining light oil column is drawn down, BP and the other Working Interest Owners are finding and implementing drilling options to exploit the current play types. Examples of recent wells drilled into Far Upstructure Romeo, Sub-HOT, Waterflood Pattern Rotation, and Sag River Proof of Concept play types are presented. The increasing dominance of gas production both in the reservoir and in the surface facilities is shown, and the potential impact of major gas sales on ultimate hydrocarbon recovery is illustrated.
AGS Luncheon Date & Time: Tuesday, March 15th, 11:30 am – 1:00 pm Program:
Prudhoe Bay Reservoir Development Optimization
Speaker:
Scott Digert, BP Alaska, Anchorage, AK
Place:
BP Energy Center, 1014 Energy Court, Anchorage, AK
Reservations:
Make your reservation before noon Friday, March 11th, 2016
Cost:
Seminar only, no meal: Lunch with reservation: Lunch with no reservation
Free $15 On an “as-available” basis
For more information call (907) 854-2363 or visit the AGS website: http://www.alaskageology.org
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About the Speaker: Scott Digert holds degrees in Chemical Engineering from the University of Colorado in Boulder and Petroleum Engineering from the Colorado School of Mines. He joined ARCO in 1985 and worked as a reservoir engineer and subsurface development team leader in the Rockies, Alaska, California, and the North Sea. He joined BP in 2000 as part of the ARCO merger, and has worked in Alaska since then in roles dealing with LNG business development, the proposed large scale gas pipeline to Chicago, viscous and heavy oil development, and field development in Milne Point and Prudhoe Bay. He is currently the Reservoir Management and Greater Prudhoe Bay East Area reservoir development manager, responsible for full field development planning and development activities in the East side of GPB.
From the President’s Desk: I want to remind AGS members that there will not be a scheduled April meeting in Anchorage. The April speaker will instead present in Fairbanks as part of the AGS Tech Fest at UAF on April 22nd. The annual Tech Fest has in the past been an excellent time to interact with University of Alaska students and faculty and a time to reconnect with colleagues and friends that you may not see that often. The AGS Board is excited that in May 2017, AGS will once again host the Pacific Section AAPG (PSAAPG) regional conference in Anchorage. The 2017 meeting is expected to provide opportunities over several days to hear talks, take short courses, view poster displays, see vendor booths and participate in geology field trips. The last time the Pacific Section AAPG regional meeting was held in Anchorage was in 2011 and before that in 2006 and 2002. Planning for the conference is progressing and folks who want to be part of making the conference a success are stepping forward. Longtime AGS member Beverly Burns has volunteered to Chair the Technical Program and several others have stepped forward to steer key committees. Your AGS convention committee will be working hard to make this conference a success. That said, there is still room to volunteer. I encourage you to get involved! This month’s AGS luncheon is on March 15th. Ballots will be available at the meeting to allow members to vote on 2016-2017 board and officer positions. The March meeting will host Scott Digert of BP who will speak on Prudhoe Bay. I look forward to seeing you at the luncheon!
~ Monte Mabry
Best regards,
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2105 Alaska Geological Society Scholarships 2015 Don Richter Memorial Scholarship The following is a project update from a recent recipient of an Alaska Geological Society Scholarship.
2015 AGS scholarship recipient: Olivia Anderson, Western Washington University, MS Petrology of a large bimodal eruption: A case study of Shishaldin volcano, central Aleutian arc, Alaska
Bimodal volcanism is not common for a typical Strombolian-type volcano, such as Shishaldin volcano on Unimak Island in the Aleutian Arc. The Shishaldin caldera-forming eruption (CFE) is unusual for Shishaldin in that it erupts both basaltic andesite and rhyodacite. There is one known location of the Shishaldin CFE deposits. The other sample locations are not certainly known to be from the Shishaldin CFE and may be from the Fisher CFE, which is the CFE of the neighboring volcano. My goals are to differentiate between the Fisher and Shishaldin CFE samples, estimate the pre-eruptive magma storage conditions for the two magmas, and constrain the degree of open system processes that led to the formation of the rhyodacite. In order to accomplish these goals, I plan to: (1) characterize the samples using petrography and microanalytical techniques, (2) obtain major element and oxygen isotope chemistry to constrain the pre-eruptive conditions, and (3) obtain single-crystal oxygen isotope chemistry to constrain the origin of the rhyodacite. Petrographic and scanning electron microscopic work has been ongoing. Both the rhyodacite and basaltic andesite contain plagioclase as the main phenocryst phase with pyroxenes and FeTi oxides, which are mainly ulvospinel. However, both of the samples contain <5% phenocrysts. Electron microprobe data show that the pyroxenes are in equilibrium with the glass, but few were analyzed, so I will analyze more pyroxenes. Dr. Pete Stelling collected more samples for this study in 2015 and the thin sections of the new samples will arrive soon. Preliminary results show that the Fisher and Shishaldin CFEs may be distinguished by plagioclase trace element chemistry, but laser inductively coupled plasma mass spectrometry (LA-ICP-MS) is ongoing work as I need to obtain more analyses of plagioclase, pyroxenes, and glass. Oxygen isotope chemistry will likely be essential in distinguishing Fisher and Shishaldin magmas. The funds from AGS will go toward these oxygen isotope analyses of plagioclase, pyroxenes, and glass. These analyses will also help determine pre-eruptive temperature since two-oxide thermobarometry is uncertain to be useful.
Membership Note Membership renewal is November 1; annual dues are: Full members - $25; Students - $5
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Volume 46 Number 7
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Calendar of Events Date
Time
Organization
Event
Location
March 9th
11:30
AMA
AMA luncheon meeting
Millennium Lakefront Hotel, Anchorage
March 10th
11:30
GSA
Kyle Brennan, Shannon & Wilson, Inc.
USGS Glenn Olds Hall, Anchorage
March 12 – 15
IASCl
Arctic Science Summit Week
UAF Fairbanks
March 15th
11:30
AGS
AGS luncheon, Scott Digert, BP Exploration “”
BP Energy Center, Anchorage
April 4 – 9
AMA
2016 Biennial Alaska Miners Association Convention
Carlson Conference Center, Fairbanks
April 5th
12:00
AIPG
DOWL, Anchorage
April 13th
11:30
AMA
AIPG luncheon Fire and Ice in the Aleutian Arc: The Science of Volcano-Ice Interactions During Eruptive Activity in Alaska Dr. Chris Waythomas AMA luncheon meeting
April 22nd
8:00 – 4:00
AGS
AGS Technical Conference
UAF, Fairbanks
May 17th
11:30
AGS
AGS luncheon Dr. Rob Witter, USGS, Anchorage “Ancient Tsunami Deposits and Modern Seismic Hazards – Southern Alaska Margin”.
BP Energy Center, Anchorage
May 23rd – 26th
SPE
Society of Petroleum Engineers – Western Regional Meeting “Conventional Challenges Unconventional solutions”
Sheraton Hotel, Anchorage
Millennium Lakefront Hotel, Anchorage
My Pet Rock
Kenneth P. Helmold Alaska Division of Oil & Gas Photomicrograph of fine-grained volcaniclastic sandstone from the Middle Jurassic Red Glacier Formation (Tuxedni Group). Rock consists largely of subrounded volcanic rock fragments (vrf) with minor plagioclase and accessory quartz. Intergranular pores are lined by iron-stained corrensite (arrows) and filled with heulandite (h). Heulandite is the by-product of extensive alteration of the volcanic detritus. Due to extensive compaction and zeolite cementation the rock has poor reservoir quality (7.0% ϕ; 1.22 md K). Sample is from measured section along ridge 6.4 km northeast of Johnson Glacier on the western side of Cook Inlet. Send me a photo of your pet rock!
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The Alaska Geological Society, Inc. P.O. Box 101288 Anchorage AK 99510 On the web at: h p://www.alaskageology.org The Alaska Geological Society is an organiza on which seeks to promote interest in and understanding of Geology and the related Earth Sciences, and to provide a common organiza on for those individuals interested in geology and the related Earth Sciences. This newsle er is the monthly (September-May) publica on of the Alaska Geological Society, Inc. Number of newsle ers/month: ~300 EDITOR Ken Helmold Alaska Geological Society, Inc. P. O. Box 101288 Anchorage, AK 99510 e-mail:
[email protected] (907) 269-8673 (office)
MEMBERSHIP INFORMATION AGS annual memberships expire November 1. The annual membership fee is $25/year ($5 for students). You may download a membership applica on from the AGS website and return it at a luncheon mee ng, or mail it to the address above.
PRA 3601 C Street, Suite 822
Contact membership coordinator Ken Helmold with changes or updates (e-mail: ken.helmold at alaska.gov; phone: 907-269-8673) All AGS publica ons are now available for on-line purchase on our website. Check to see the complete catalogue: h p://www.alaskageology.org/publica ons
ADVERTISING RATES
Anchorage, AK 99503
Volume 46 Number 7
Adver sements may be purchased at the following rates: 1/10 Page--$190/9mo, $75/1mo; size=1.8 x 3.5 inch 1/4 Page--$375/9mo, $95/1mo; size=4.5 x 3.5 or 2.2 x 7.5 inch 1/3 Page- $470/9mo, $105/1mo; size=7.0 x 3.5 or 3.0 x 7.5 inch 1/2 Page--$655/9mo, $125/1mo; size=9.0 x 3.5 or 4.5 x 7.5 inch Full Page--$1000/9mo, $165/1mo; size=7.5 x 9.0 inch 1mo rate=(9mo rate/9)+$50 (rounded up).
March 2016
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2015 ‐ 2016 Alaska Geological Society Board Title President Past-President President-Elect Vice-President Treasurer Secretary Director 15-2017 Director 15-2017 Director 15-2017 Director 14-2016 Director 14-2016 Director 14-2016
Name Monte Mabry Keith Torrance Chad Hults Steve Wright Heather Heusser Dave Buthman Jennifer Crews Jamey Jones Mick Bradway Al Hunter Karri Sicard Kirk Sherwood
Phone 564-4028 677-8257 332-0740 854 2363 947-9010 344-6001 263-4516 786-7442 947-9010 451-5040 334-5337
e-mail monte.mabry at bp.com keith.torrance at uicumiaq.com chadcph at gmail.com vp at alaskageology.org heather.heusser at alaska.gov dbuthman at hilcorp.com jennifer.r.crews at conocophillips.com jvjones at usgs.gov brad8450 at yahoo.com paleoman at mac.com karri.sicard at alaska.gov sherwook at mtaonline.net
Affiliation BP UMIAQ NPS AK DOG AK DOG Hilcorp. ConocoPhillips USGS Chevron (retired) AK DGGS
Commi ees and Delegates Title AAPG Delegate Advertising Com. Ed./Science Fair Field Trips Bylaws Memberships Newsletter Editor Publications Scholarship Website Fundraising
Name Marwan Wartes Keith Torrance Jana DaSilva Lage Chad Hults Sue Karl Kirk Sherwood Ken Helmold Mick Bradway Sue Karl Jan Hazen Sunny Foster
Volume 46 Number 7
Phone 451-5056 677-8257 980-9368 332-0740 786-7428 334-5337 269-8673 786-7428 269-7569
e-mail marwan.wartes at alaska.gov keith.torrance at uicumiaq.com jldasilva5 at hotmail.com chadcph at gmail.com skarl at usgs.gov sherwook at mtaonline.net ken.helmold at alaska.gov brad8450 at yahoo.com skarl at usgs.gov
[email protected] sunny.foster at alaska.gov
March 2016
Affiliation AK DGGS UMIAQ APICC NPS USGS AK DOG USGS Consultant AK DEC
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