DOI: 10.1306/01051009130
Scopus记录号: 2-s2.0-77957805758
论文题名: Depositional setting and diagenetic processes and their impact on the reservoir quality in the late Visean-Bashkirian Kashagan carbonate platform (Pre-Caspian Basin, Kazakhstan)
作者: Ronchi P. ; Ortenzi A. ; Borromeo O. ; Claps M. ; Zempolich W.G.
刊名: AAPG Bulletin
ISSN: 0149-1908
EISSN: 1558-9638
出版年: 2010
发表日期: 2010
卷: 94, 期: 9 起始页码: 1313
结束页码: 1348
语种: 英语
Scopus关键词: Carbonate platforms
; Cyclic patterns
; Cyclicity
; Depositional setting
; Diagenetic evolution
; Diagenetic process
; Diagenetics
; Dolomitization
; Fluid circulation
; Fluid inclusion
; High manganese
; Homogenization temperatures
; Karst surface
; Kazakhstan
; Matrix porosity
; Meteoric waters
; Near-surface
; Porosity distributions
; Reservoir quality
; Salinity fluids
; Stable isotopes
; System evolution
; Calcite
; Carbonate minerals
; Cementing (shafts)
; Cements
; Dissolution
; Fluids
; Inclusions
; Isotopes
; Manganese
; Mineralogy
; Petrography
; Sedimentology
; Trace elements
; Volcanic rocks
; Porosity
; calcite
; cementation
; depositional environment
; diagenesis
; dissolution
; dolomitization
; fluid inclusion
; freshwater environment
; heterogeneity
; karst
; luminescence
; matrix
; meteoric water
; petrography
; reservoir
; salinity
; sedimentation
; stable isotope
; temperature effect
; trace element
; Visean
; water quality
; Kashagan Field
; Kazakhstan
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: The Kashagan isolated carbonate platform developed from the Visean to the Bashkirian in the Pre-Caspian Basin. Sedimentation is organized in shallowing-upward cycles marked at the top by subaerial exposure surfaces. This study is based on analyses of 12 cored wells, integrated sedimentology, petrography, fluid inclusion, stable isotopes, and trace element data. We reconstructed the pore-system evolution in the platform interior and margin. Near-surface diagenesis includes marine cement fringes followed by meteoric dissolution and cementation. Meteoric diagenesis was stronger in the Bashkirian sequence and progressively decreased down section in the Visean. The main karst surfaces are evidenced by root traces, sharp δ13C depletion, and meteoric water-fluid inclusions in calcites. Porosity in the platform interior follows a cyclic pattern due to the interaction of the freshwater dissolution and cementation and compaction that destroyed the porosity at the tops and bases of the cycles. Burial diagenesis, represented by some calcite cementation, did not significantly alter the cyclic porosity distribution in the platform interior. In the platform margin, porosity distribution is more heterogeneous due to more poorly defined sedimentary cyclicity and stronger burial diagenetic overprint linked to exotic fluid circulation. Basin-sourced fluids caused dissolution, cementation, and local dolomitization. These cements show bright luminescence, a high manganese content, depleted δ18O, a high homogenization temperature, and low-salinity fluid inclusions. The complex diagenetic evolution diagenesis produced better matrix porosity in the platform interior and heterogeneous porosity with larger pores and fractures but with poor matrix porosity in the platform margin. Copyright © 2010. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957805758&doi=10.1306%2f01051009130&partnerID=40&md5=5179f8cc0079479d688035e3c962eaab
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13477
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:
Ronchi P.,Ortenzi A.,Borromeo O.,et al. Depositional setting and diagenetic processes and their impact on the reservoir quality in the late Visean-Bashkirian Kashagan carbonate platform (Pre-Caspian Basin, Kazakhstan)[J]. AAPG Bulletin,2010-01-01,94(9)