| DOI: | 10.1306/03031514119
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| Scopus记录号: | 2-s2.0-84944345850
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| 论文题名: | Characterization of the Devonian Kharyaga carbonate platform (Russia): Integrated and multiscale approach |
| 作者: | Spina V.; Borgomano J.; Nely G.; Shchukina N.; Irving A.; Neumann C.; Neillo V.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1496
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| EISSN: | 1558-9226
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| 出版年: | 2015
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| 发表日期: | 2015
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| 卷: | 99, 期:9 | | 起始页码: | 1771
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| 结束页码: | 1799
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| 语种: | 英语
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| Scopus关键词: | Carbonation
; Complex networks
; Electric logging
; Fracture
; Geomechanics
; Glacial geology
; Lakes
; Landforms
; Reefs
; Sea level
; Sedimentology
; Seismology
; Stratigraphy
; Subsidence
; Complex relationships
; Lagoon environments
; Micro-resistivity log
; Multi-scale approaches
; Permeability heterogeneity
; Sea level variations
; Seismic interpretation
; Structural discontinuity
; Fixed platforms
; barrier reef
; carbonate
; carbonate platform
; core analysis
; Devonian
; grainstone
; karst
; karstification
; lagoon
; porosity
; sedimentation rate
; stromatolite
; three-dimensional modeling
; thrombolite
; two-dimensional modeling
; Russian Federation
|
| Scopus学科分类: | Energy
; Earth and Planetary Sciences
|
| 英文摘要: | The Devonian carbonate platform (Obj-2) of the Kharyaga field (Russia) has been operated by Total since 1999 and produces 42° API oil, rich in H2S. A multidisciplinary (sedimentological, structural, stratigraphic, and geomechanical modeling) and multiscale study was made of the field, integrating seismic, micro-resistivity log, and core data to characterize the reservoir. The Kharyaga carbonate platform is characterized by complex relationships among sea-level variations, subsidence, and sedimentation rates. The field is divided into a platform edge (barrier zone) in the southern area, and back barrier and lagoon environments to the north, each characterized by different facies distribution and dynamic behavior. The platform shelf and the reef flat show dome-shaped thrombolites; the back barrier is characterized by grainstone shoals associated with columnar stromatolites, whereas the lagoon comprises peloidal wackestones and packstones associated with laminated fenestral stromatolites. Significant and prolonged subsidence, in both the lagoon and the platform edge, is associated with partial emergence of the platform reef, as shown by karst development. Seismic interpretation highlighted both underlying north-south structures and syndepositional east-west collapse faults along the southern barrier edge. Two-dimensional and three-dimensional sedimentological modeling of the Obj-2, calibrated by well data and core analyses, allowed the simulation of alternative scenarios to explain the evolution of the carbonate platform during the Devonian and suggested the observed facies distribution is compatible with the presence of a fixed outer platform edge represented by east-west faults. The carbonate platform of the Kharyaga field exhibits complex behavior; hydrocarbon (HC) accumulation and flow is controlled by the interplay of primary porosity, karst distribution, and structural discontinuities (faults and fractures). Besides the role of the karstification, this paper mainly focuses on the role played by tectonic structures on the evolution of the carbonate platform and on the HC flow. From drill stem test data, east-west faults and karsts are considered as major permeability heterogeneities, but interference tests showed more complex fluid pathways at the smaller scale. Microresistivity images show dominant northeast-southwest and northwest-southeast fracture sets in the central barrier, forming an interconnected flow network with the seismic faults. Geomechanical modeling suggests that these fractures are subseismic structures linked to inherited, deep-seated faults active at the time of fracturing, in addition to the listric reservoir faults. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944345850&doi=10.1306%2f03031514119&partnerID=40&md5=da1c788d4153d25809fa09bf006b8bf1
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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/13067
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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: | |
Spina V.,Borgomano J.,Nely G.,et al. Characterization of the Devonian Kharyaga carbonate platform (Russia): Integrated and multiscale approach[J]. AAPG Bulletin,2015-01-01,99(9)
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