| DOI: | 10.1306/10241111030
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| Scopus记录号: | 2-s2.0-84862744099
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| 论文题名: | Production-induced fault compartmentalization at Elk Hills field, California |
| 作者: | Morris A.P.; Smart K.J.; Ferrill D.A.; Reish N.E.; Cowell P.F.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1767
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| EISSN: | 1558-9497
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| 出版年: | 2012
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| 发表日期: | 2012
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| 卷: | 96, 期:6 | | 起始页码: | 1001
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| 结束页码: | 1015
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| 语种: | 英语
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| Scopus关键词: | California
; Economic returns
; Economic values
; Economic viability
; Fault seal
; Fluid pressures
; Hydrocarbon fields
; Oil zone
; Permeability barriers
; Permeability reduction
; Pressure conditions
; Pressure data
; Pressure differential
; Reservoir conditions
; Stress state
; Structural variations
; Well bore
; Hydrocarbons
; Well logging
; Seals
; borehole
; calibration
; compaction
; compartmentalization
; economic geology
; faulting
; fluid pressure
; fracture propagation
; hydrocarbon reservoir
; oil production
; permeability
; pressure gradient
; reservoir characterization
; sealing
; vesicular-arbuscular mycorrhiza
; California
; Elk Hills
; United States
|
| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | Mature and aging clastic-dominated hydrocarbon fields commonly become increasingly difficult to produce, causing lower economic return than initially forecast. A major cause of this reduced economic viability is compartmentalization, defined as limitation on the ability to produce hydrocarbons resulting from permeability barriers within a field. Three primary causes of compartmentalization are structural variations in permeability, stratigraphie variations in permeability, and permeability reduction resulting from compaction adjacent to producing wellbores. Recognition and delineation of compartmentalization permit formulation of development and depletion plans to maximize recovery and economic value. Here, we examine one of 52 reservoir-scale faults that compartmentalize the eastern shallow oil zone (ESOZ), Elk Hills field, California. Using well-log, stratigraphie, structural, and pressure data, we apply standard fault seal analyses to the selected fault. Results are compared with known pressure conditions across the fault and show the fault capable of supporting pressure differentials two to three times those expected from standard static fault seal measures. Although this observation could be used as a basis for local calibration of standard fault seal measures for a dynamic seal, such an approach assumes that these fault seal mechanisms are in fact the cause of sealing behavior. Alternatively, one of the most significant changes in ESOZ reservoir conditions over the production lifetime of the field is the reduction of fluid pressure from approximately 1500 to approximately 200 psi (from ∼10.27 to ∼1.37 MPa). Decreasing fluid pressure would have driven stress states acting on faults in the reservoir from critical (near or at slip) to stable (nonslipping) conditions. Critically stressed faults and fractures are more transmissive than those that are noncritically stressed. We propose that decreasing fluid pressure can cause faults to become less leaky, causing production-induced reservoir compartmentalization. Copyright ©2012. The American Assodation of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862744099&doi=10.1306%2f10241111030&partnerID=40&md5=6aa9e3087e023df1605f52731c8961ee
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13337
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| 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: | |
Morris A.P.,Smart K.J.,Ferrill D.A.,et al. Production-induced fault compartmentalization at Elk Hills field, California[J]. AAPG Bulletin,2012-01-01,96(6)
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