气候变化领域集成服务门户(CCPortal): Petrophysical properties of the Green Canyon Block 955 hydrate reservoir inferred from reconstituted sediments: Implications for hydrate formation and production

CCPortal

DOI	10.1306/01062019165
	Petrophysical properties of the Green Canyon Block 955 hydrate reservoir inferred from reconstituted sediments: Implications for hydrate formation and production
	Fang Y.; Flemings P.B.; Daigle H.; Phillips S.C.; Kevin Meazell P.; You K.
发表日期	2020
ISSN	0149-1423
起始页码	1997
结束页码	2028
卷号	104 期号:9
英文摘要	We explore the petrophysical behavior of the two interbedded lithofacies (sandy silt and clayey silt) that constitute the Green Canyon Block 955 hydrate reservoir in the deep-water Gulf of Mexico by performing experiments on reconstituted samples of the reservoir material. Sandy silts reconstituted to the in situ porosity have a permeability of 11.8 md (1.18 · 10-14 m2), which is similar to the intrinsic permeabilities measured in intact cores from hydrate reservoirs of similar grain size offshore Japan (Nankai Trough) and offshore India. Reconstituted clayey silts have a much lower intrinsic permeability of 3.84 · 10-4 md (3.84 · 10-19 m2) at the in situ stress. The reconstituted sandy silt is less compressible than the clayey silt. Mercury injection capillary pressure measurements demonstrate that the largest pores with the clayey silt are still smaller than the pores remaining after 90% hydrate saturation in sandy silt. We interpret that the methane solubility in pores of clayey silt is always less than that necessary to form hydrate, which explains why no hydrate is present in the clayey silt. We upscale the reservoir properties to estimate the behavior of interbedded sandy silt and clayey silt. We find the upscaled intrinsic horizontal and vertical permeabilities for the entire reservoir interval are 8.6 md (8.6 · 10-15 m2) and 1.4 · 10-3 md (1.4 · 10-18 m2). We estimate that during reservoir production, a maximum vertical strain of approximately 12% will result. Ultimately, this study will inform reservoir simulation models with petrophysical properties at scales of both individual lithofacies and reservoir formation. Copyright ©2020. The American Association of Petroleum Geologists. All rights reserved.
英文关键词	Gas hydrates; Hydration; Offshore oil well production; Petroleum reservoir engineering; Petrophysics; Pressure measurement; Reservoirs (water); Hydrate saturation; Intrinsic permeability; Mercury injection capillary pressures; Petrophysical properties; Reconstituted sample; Reservoir formation; Reservoir simulation model; Vertical permeabilities; Silt; gas hydrate; grain size; lithofacies; methane; offshore engineering; permeability; petrochemistry; porosity; pressure field; reservoir characterization; saturation; silt; Atlantic Ocean; Green Canyon; Gulf of Mexico; Gulf of Mexico; India; Japan; Nankai Trough; Pacific Ocean
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/168696
作者单位	Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; Hildebrand Department of Petroleum and Geosystems Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX, United States
推荐引用方式 GB/T 7714	Fang Y.,Flemings P.B.,Daigle H.,et al. Petrophysical properties of the Green Canyon Block 955 hydrate reservoir inferred from reconstituted sediments: Implications for hydrate formation and production[J],2020,104(9).
APA	Fang Y.,Flemings P.B.,Daigle H.,Phillips S.C.,Kevin Meazell P.,&You K..(2020).Petrophysical properties of the Green Canyon Block 955 hydrate reservoir inferred from reconstituted sediments: Implications for hydrate formation and production.AAPG Bulletin,104(9).
MLA	Fang Y.,et al."Petrophysical properties of the Green Canyon Block 955 hydrate reservoir inferred from reconstituted sediments: Implications for hydrate formation and production".AAPG Bulletin 104.9(2020).