DOI: 10.1306/04211009152
Scopus记录号: 2-s2.0-77955971480
论文题名: Prediction of deep reservoir quality using early diagenetic process models in the jurassic norphlet formation, gulf of Mexico
作者: Ajdukiewicz J.M. ; Nicholson P.H. ; Esch W.L.
刊名: AAPG Bulletin
ISSN: 0149-1915
EISSN: 1558-9645
出版年: 2010
发表日期: 2010
卷: 94, 期: 8 起始页码: 1189
结束页码: 1227
语种: 英语
Scopus关键词: Alabama
; Deep reservoirs
; Diagenetic illites
; Diagenetic process
; Diagenetics
; Dune sands
; Field development
; Fresh-water
; Gas reservoir
; Gulf of Mexico
; High temperature
; Hypersaline
; Jurassic
; Low permeability
; Low porosity
; Process-based models
; Quartz cements
; Reservoir quality
; Shallow groundwater
; Vadose Zone
; Well placement
; Cements
; Clay minerals
; Geologic models
; Groundwater
; Natural resources exploration
; Porosity
; Quartz
; Underground reservoirs
; deposition
; diagenesis
; dune
; eolian deposit
; freshwater
; freshwater input
; groundwater
; high temperature
; hydrocarbon reservoir
; hypersaline environment
; illite
; Jurassic
; numerical model
; permeability
; porosity
; quality control
; quartz
; reservoir characterization
; vadose zone
; Alabama
; Atlantic Ocean
; Gulf of Mexico
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: We have developed process-based models for early grain coats and their impact on deep reservoir quality in the Jurassic eo-lian Norphlet Formation, Alabama, with implications for exploration and development in other conventional and tight-gas continental reservoirs. The Norphlet, a major gas reservoir to depths of 21,800 ft (6645 m) and temperatures of 419°F (215°C), displays contrasting intervals of high and low reservoir quality within compositionally similar cross-bedded eolian sands. Study results show that grain coats formed soon after deposition are responsible for differences in deep Norphlet porosity of up to 20% and permeability up to 200 md. Three types of grain coats were identified in Norphlet dune sands, each formed in a different part of a shallow groundwater system, and each with distinctive impact on deep reservoir quality. Diagenetic chlorite coats, formed where dunes subsided into shallow hypersaline groundwater, preserve good deep porosity (to 20%) and permeability (to 200 md]. Continuous tangential illitic coats, formed in the vadose zone of stabilized dunes exposed to periodic fresh-water influx, preserve good deep porosity (to 15%) associated with poor permeability (<1 md) due to linked formation of later high-temperature diagenetic illite. Discontinuous grain coats, formed in active dunes where grains were abraded by eolian transport, are associated at depth with tight zones of pervasive quartz cement, low porosity (<8%), and low permeability (<1 md). These concepts plus data from 60 wells were used to derive bay-wide predictive tight and porous-zone isopachs that can be used for well placement, geologic models, and field development. Copyright © 2010. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77955971480&doi=10.1306%2f04211009152&partnerID=40&md5=30bfd1a1cf81408f0bd4adbbfafaa8c9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13484
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:
Ajdukiewicz J.M.,Nicholson P.H.,Esch W.L.. Prediction of deep reservoir quality using early diagenetic process models in the jurassic norphlet formation, gulf of Mexico[J]. AAPG Bulletin,2010-01-01,94(8)