DOI: 10.1306/11111313009
Scopus记录号: 2-s2.0-84901066209
论文题名: Time-dependent subsidence associated with drainage-induced compaction in Gulf of Mexico shales bounding a severely depleted gas reservoir
作者: Chang C. ; Mailman E. ; Zoback M.
刊名: AAPG Bulletin
ISSN: 0149-1555
EISSN: 1558-9285
出版年: 2014
发表日期: 2014
卷: 98, 期: 6 起始页码: 1145
结束页码: 1159
语种: 英语
Scopus关键词: Offshore gas fields
; Oil fields
; Petroleum reservoirs
; Shale
; Subsidence
; Cessation of productions
; Depleted gas reservoir
; Depleted reservoirs
; Oil and gas fields
; Pressure diffusion
; Reservoir compaction
; Reservoir depletion
; Very low permeability
; Compaction
; acceleration
; compaction
; diffusion
; drainage
; hydrocarbon reservoir
; permeability
; pore pressure
; subsidence
; Atlantic Ocean
; Gulf of Mexico
; Louisiana
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Production from ubiquitous oil and gas fields in coastal Louisiana and consequent reservoir compaction has been proposed as an important process contributing to coastal subsidence and land loss in this region. As revealed by three consecutive leveling surveys (in 1965, 1982, and 1993), an unexpected aspect of the subsidence is that the rate of subsidence actually increased after the cessation of production. To explain the accelerated postdepletion subsidence, we propose a mechanism involving time-dependent drainage and compaction in the overlying and underlying shales after depletion. We show that the shale compaction is induced by slow drainage of pore fluid from the shale to the depleted reservoir. We estimate the significance of postdepletion compaction in the bounding shale using a relatively simple analytic model in which time-dependent shale compaction is driven by pore pressure diffusion with two sets of Theological constitutive equations: one accounting for poroelastic effects and one accounting for vis-coplastic deformation of the shale matrix. Our modeling shows that despite its very low permeability, after about 10 years, vertical compaction due to pressure drainage in the shale exceeds that due to depletion and compaction of the sand reservoir. Consequently, the calculated subsidence rate due to the shale compaction is higher than the subsidence induced by reservoir depletion, thus demonstrating that postdepletion compaction in the reservoir-surrounding shale may explain the observed acceleration of subsidence after depletion. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901066209&doi=10.1306%2f11111313009&partnerID=40&md5=482f96543f9a66f92c70580fd6ec9cd3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13126
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Chang C.,Mailman E.,Zoback M.. Time-dependent subsidence associated with drainage-induced compaction in Gulf of Mexico shales bounding a severely depleted gas reservoir[J]. AAPG Bulletin,2014-01-01,98(6)