DOI: 10.1306/06160909012
Scopus记录号: 2-s2.0-76749109501
论文题名: The function of fractures and in-situ stresses in the Khuff reservoir performance, onshore fields, Saudi Arabia
作者: Ameen M.S. ; Buhidma I.M. ; Rahim Z.
刊名: AAPG Bulletin
ISSN: 0149-1956
EISSN: 1558-9686
出版年: 2010
发表日期: 2010
卷: 94, 期: 1 起始页码: 27
结束页码: 60
语种: 英语
Scopus关键词: Compressional
; Fracture apertures
; Fracture orientations
; Gradient change
; High-density
; Insitu stress
; Local structure
; Mesoscopics
; Natural fracture
; Onshore fields
; Permian
; Plate Tectonics
; Pressure profiles
; Reservoir performance
; Saudi Arabia
; Sealing layers
; Static and dynamic
; Structural traps
; Triassic
; Variable performance
; Vertical pressure
; Horizontal wells
; Hydrocarbons
; Plates (structural components)
; Productivity
; Stresses
; Superconducting materials
; Tectonics
; Wells
; Fracture
; fracture orientation
; fracture propagation
; hydrocarbon
; Permian-Triassic boundary
; plate tectonics
; pressure gradient
; reservoir-induced seismicity
; Saudi Arabia
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The highly variable performance of the Permian-Triassic Khuff reservoir in onshore Saudi Arabia has been attributed to the presence of natural fractures. Similar preproduction pressure profile and hydrocarbons in the different reservoir units in some fields have been attributed to vertical communication through large faults. To validate these assumptions, we studied the static and dynamic data from the Khuff reservoir in 19 major structural traps. We identified two distinctive fracture domains based on fracture orientation and density. Fracture evolution is mainly controlled by the extensional and consequent compressional plate tectonics instead of local structures. In-situ stresses are dominated by the Zagros plate tectonics and affect fracture aperture differently in the two fracture domains. The fracture impact on the Khuff reservoir performance is mostly subtle because of the nature and distribution of the fractures. High fracture-enhanced productivity occurs locally in some of the producing wells, and it results from high-density fracture clusters (including mesoscopic faults) with channel-type apertures. The following findings challenge the perceived major functions of fractures in the Khuff reservoir performance in onshore fields: (1) Individual fractures are dominantly tensile and small (mesoscopic and microscopic); (2) individual faults are small and not readily resolvable at seismic scale; (3) the depth and carbonate nature of the Khuff reservoir make the fractures highly susceptible to fast healing unless preserved within the hydrocarbon column; (4) initial vertical pressure gradient changes with production indicate a lack of presentday communication across the anhydrite sealing layers, between the different Khuff reservoir units; (5) horizontal well direction does not generally have an impact on productivity; and (6) sustained and heavy losses of circulation are rarely encountered in the Khuff reservoir wells. Copyright ©2010. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-76749109501&doi=10.1306%2f06160909012&partnerID=40&md5=1080a4852d9d4848b5d9e9cb4d264bfe
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13525
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:
Ameen M.S.,Buhidma I.M.,Rahim Z.. The function of fractures and in-situ stresses in the Khuff reservoir performance, onshore fields, Saudi Arabia[J]. AAPG Bulletin,2010-01-01,94(1)