气候变化领域集成服务门户(CCPortal): Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition

CCPortal

DOI	10.1306/05212019052
	Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition
	Flemings P.B.; Phillips S.C.; Boswell R.; Collett T.S.; Cook A.E.; Dong T.; Frye M.; Goldberg D.S.; Guerin G.; Holland M.E.; Jang J.; Meazell K.; Morrison J.; O'Connell J.I.; Petrou E.G.; Pettigrew T.; Polito P.J.; Portnov A.; Santra M.; Schultheiss P.J.; Seol Y.; Shedd W.; Solomon E.A.; Thomas C.M.; Waite W.F.; You K.
发表日期	2020
ISSN	0149-1423
起始页码	1847
结束页码	1876
卷号	104 期号:9
英文摘要	The University of Texas Hydrate Pressure Coring Expedition (UT-GOM2-1) recovered cores at near in situ formation pressures from a gas hydrate reservoir composed of sandy silt and clayey silt beds in Green Canyon Block 955 in the deepwater Gulf of Mexico. The expedition results are synthesized and linked to other detailed analyses presented in this volume. Millimeter- to meter-scale beds of sandy silt and clayey silt are interbedded on the levee of a turbidite channel. The hydrate saturation (the volume fraction of the pore space occupied by hydrate) in the sandy silts ranges from 79% to 93%, and there is little to no hydrate in the clayey silt. Gas from the hydrates is composed of nearly pure methane (99.99%) with less than 400 ppm of ethane or heavier hydrocarbons. The d13C values from the methane are depleted (-60% to -65%Vienna Peedee belemnite), and it is interpreted that the gases were largely generated by primary microbial methanogenesis but that low concentrations of propane or heavier hydrocarbons record at least trace thermogenic components. The in situ pore-water salinity is very close to that of seawater. This suggests that the excess salinity generated during hydrate formation diffused away because the hydrate formed slowly or because it formed long ago. Because the sandy silt deposits have high hydrate concentration and high intrinsic permeability, they may represent a class of reservoir that can be economically developed. Results from this expedition will inform a new generation of reservoir simulation models that will illuminate how these reservoirs might be best produced. Copyright ©2020. The American Association of Petroleum Geologists. All rights reserved.
英文关键词	Hydration; Hydrocarbons; Methane; Petroleum reservoir engineering; Silt; Gas hydrate reservoir; Hydrate concentration; In-situ formations; Intrinsic permeability; Low concentrations; Pore water salinities; Reservoir simulation model; University of Texas; Gas hydrates; carbon isotope; concentration (composition); deep water; ethane; gas hydrate; levee; methanogenesis; pore space; pressure field; propane; reservoir characterization; turbidite; Atlantic Ocean; Green Canyon; Gulf of Mexico; Texas; United States; Belemnoidea
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/168697
作者单位	Institute for Geophysics, Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; National Energy Technology Laboratory (NETL), Department of Energy (DOE), Pittsburgh, PA, United States; US Geological Survey (USGS), Central Energy Resources Science Center, Denver Federal Center, Denver, CO, United States; School of Earth Sciences, Ohio State University, Columbus, OH, United States; Resource Evaluation Division, Bureau of Ocean Energy Management (BOEM), Washington, DC, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Geotek, Ltd., Daventry, Northamptonshire, United Kingdom; Integrated Statistics, Inc., Contracted to USGS, Woods Hole, MA, United States; Pettigrew Engineering, PLLC, Milam, TX, United States; Jackson School of Geosciences, University of Texas at Austin, Austin, T...
推荐引用方式 GB/T 7714	Flemings P.B.,Phillips S.C.,Boswell R.,et al. Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition[J],2020,104(9).
APA	Flemings P.B..,Phillips S.C..,Boswell R..,Collett T.S..,Cook A.E..,...&You K..(2020).Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition.AAPG Bulletin,104(9).
MLA	Flemings P.B.,et al."Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from the University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition".AAPG Bulletin 104.9(2020).