气候变化领域集成服务门户(CCPortal): Pressure coring operations during the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition in Green Canyon Block 955; northern Gulf of Mexico

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DOI	10.1306/02262019036
	Pressure coring operations during the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition in Green Canyon Block 955; northern Gulf of Mexico
	Thomas C.; Phillips S.C.; Flemings P.B.; Santra M.; Hammon H.; Collett T.S.; Cook A.E.; Pettigrew T.; Mimitz M.; Holland M.; Schultheiss P.
发表日期	2020
ISSN	0149-1423
起始页码	1877
结束页码	1901
卷号	104 期号:9
英文摘要	In May 2017, The University of Texas Hydrate Pressure Coring Expedition Gulf of Mexico 2-1 (UT-GOM2-1) drilled two adjacent holes in Green Canyon Block 955 in the deep-water Gulf of Mexico as part of The University of Texas at Austin and US Department of Energy Deepwater Methane Hydrate Characterization and Scientific Assessment. Expedition operations included testing two configurations of a rotary pressure-coring tool in a gas hydrate-bearing formation. In the first hole, an extended core barrel (cutting shoe) configuration of the Pressure Coring Tool with Ball Valve (PCTB-CS) was deployed, and in the second hole, the PCTB face bit configuration (PCTB-FB) was deployed. The PCTB-CS successfully recovered and maintained pressure for only one core out of eight deployments. A series of incremental modifications were made during and after the PCTB-CS deployment period that impacted the operations of the subsequent PCTB-FB deployments. Thus, in the second hole, the PCTB-FB successfully recovered and maintained pressure within the hydrate stability zone for 11 cores out of 13 deployments. The PCTB cored gas hydrate-bearing sandy silt interbedded with non-hydrate-bearing clayey silt within the main reservoir. The PCTB also recovered long intervals of unbroken, high-quality core with preserved sedimentary structures. We recovered one pressure core 130 m (437 ft) above the main hydrate reservoir in the silty clay. Pressure coring is the only available technology for recovering intact cores from sediment that is normally disturbed by gas expansion, dissolution, or dissociation; this allows a wide range of scientific measurements to be obtained with minimal disturbance to the core sediment fabric. Analysis of pressure cores has the potential to illuminate the in situ properties, gas saturation, and gas composition of a wide range of reservoirs including unconventional shale systems. Copyright ©2020. The American Association of Petroleum Geologists. All rights reserved.
英文关键词	Gases; Hydration; Oil bearing formations; Recovery; Sedimentology; Silt; Gas compositions; Gas saturations; Hydrate stabilities; Methane hydrates; Northern Gulf of Mexico; Sedimentary structure; University of Texas; US Department of Energy; Gas hydrates; core logging; deep sea; deep-sea sediment; gas hydrate; pressure field; reservoir characterization; shale; silty soil; university sector; Atlantic Ocean; Austin [Texas]; Green Canyon; Gulf of Mexico; Texas; United States
语种	英语
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168698
作者单位	Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Institute for Geophysics, Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; US Geological Survey (USGS), Central Energy Resources Science Center, Denver Federal Center, Denver, CO, United States; School of Earth Science, Ohio State University, Columbus, OH, United States; Pettigrew Engineering, PLLC, Milam, TX, United States; Geotek Coring, Inc., Salt Lake City, UT, United States; Geotek, Ltd., Daventry, United Kingdom
推荐引用方式 GB/T 7714	Thomas C.,Phillips S.C.,Flemings P.B.,et al. Pressure coring operations during the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition in Green Canyon Block 955; northern Gulf of Mexico[J],2020,104(9).
APA	Thomas C..,Phillips S.C..,Flemings P.B..,Santra M..,Hammon H..,...&Schultheiss P..(2020).Pressure coring operations during the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition in Green Canyon Block 955; northern Gulf of Mexico.AAPG Bulletin,104(9).
MLA	Thomas C.,et al."Pressure coring operations during the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition in Green Canyon Block 955; northern Gulf of Mexico".AAPG Bulletin 104.9(2020).