DOI: 10.1306/02141110117
Scopus记录号: 2-s2.0-80155195907
论文题名: Partial dolomitization of a Pennsylvanian limestone buildup by hydrothermal fluids and its effect on reservoir quality and performance
作者: Sailer A.H. ; Dickson J.A.D.
刊名: AAPG Bulletin
ISSN: 0149-1827
EISSN: 1558-9557
出版年: 2011
发表日期: 2011
卷: 95, 期: 10 起始页码: 1745
结束页码: 1762
语种: 英语
Scopus关键词: Deep burials
; Dolomitization
; Fluid inclusion
; Hydrothermal fluids
; Oil production
; Original oil in places
; Permian
; Reservoir characteristic
; Reservoir quality
; Shallow burial
; Thermal convections
; Carbon dioxide
; Fluids
; Heating
; Limestone
; Mineralogy
; Petrography
; Recrystallization (metallurgy)
; Seawater
; Stratigraphy
; bottom water
; brine
; burial (geology)
; carbon dioxide
; diagenesis
; dolomite
; dolomitization
; evaporation
; facies
; fluid inclusion
; heating
; hydrothermal fluid
; limestone
; micrite
; oil production
; oxygen isotope
; Pennsylvanian
; performance assessment
; permeability
; Permian
; petrography
; porosity
; precipitation (chemistry)
; recrystallization
; reservoir
; seawater
; stylolite
; thermal convection
; Texas
; United States
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Dolomite was studied in the Reinecke field in west Texas to determine its origin, reservoir characteristics, and effect on oil production. The Reinecke reservoir includes approximately 25% dolomite in an upper Pennsylvanian to lowest Permian limestone buildup. Dolomites are fine to coarsely crystalline with undulose extinction. Petrography indicates that dolomite formed diagenetically late. Dolomites overgrow stylolites, indicating precipitation during deep burial. Low δ18O values are consistent with primary fluid inclusions that indicate dolomite precipitation or recrystallization at 92 to 118°C. These temperatures are much higher than those in the existing reservoir or what should have been encountered during regional burial. Two types of dolomite are observed. One type is stratiform, replaced micrite-rich facies, and is interpreted as early dolomite that recrystallized in hydrothermal brines. The second type crosscuts stratigraphy and depositional facies and has vertically continuous morphologies that trend northwest-southeast. The latter dolomite is interpreted as forming in hydrothermal brines derived from latest Permian-aged highly evaporated seawater. These brines descended deep into the basin because of their greater density and then ascended because of heating and thermal convection. Reinecke dolomites have lower porosity but higher permeability than the surrounding limestones. As a result, dolomites provide "raceways" for fluids moving through the reservoir. These dolomites helped an artificially enhanced bottom-water drive to recover approximately 50% of the original oil in place. The dolomite has complicated a crestal CO 2 flood. These hydrothermal Reinecke dolomites have lower porosity but much higher permeability than most nearby Permian dolomites formed in evaporated seawater during shallow burial. © 2011. The American Association of Petroleum Geologists. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-80155195907&doi=10.1306%2f02141110117&partnerID=40&md5=0d1b748456fa4d0d286be5e2a6bc0a88
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13396
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:
Sailer A.H.,Dickson J.A.D.. Partial dolomitization of a Pennsylvanian limestone buildup by hydrothermal fluids and its effect on reservoir quality and performance[J]. AAPG Bulletin,2011-01-01,95(10)