Petroleum Science >2012,??Issue 2:??141-153 DOI: https://doi.org/10.1007/s12182-012-0194-9
Geochemical characteristics and diagenetic systems of dolomite reservoirs of the ChangxingFormation in the eastern Sichuan Basin, China Open?Access
文章信息
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Chengdu University of Technology, Sichuan 610059, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Chengdu University of Technology, Sichuan 610059, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Chengdu University of Technology, Sichuan 610059, China;Chongqing Gas Mine, PetroChina Southwest Oil and Gasfield Company, Chongqing 401120, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Chengdu University of Technology, Sichuan 610059, China;Sichuan Science and Technology Worker University, Sichuan 610059, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Chengdu University of Technology, Sichuan 610059, China
文章摘要
into four diagenetic systems: (1) penecontemporaneous stage syngenetic brine diagenetic system, (2) early diagenetic stage strata seal brine diagenetic system, (3) middle-late diagenetic stage mixed hot brine diagenetic system and (4) tectonic uplift stage mixed hydrothermal fluid diagenetic system. New understanding of the controlling factors and distribution of dolomite reservoir development is discussed. Reef shoal facies belts controlled regional reservoir distribution and the scale of development. Burial dolomitization of a strata seal brine diagenetic system is the foundation of reservoir development, mainly developing pore reservoir. Burial dolomitization of mixed hot brine diagenetic system expanded the reservoir distribution and improved the reservoir quality, mainly developing pore-vug reservoir. Fracturing dissolution of a mixed hydrothermal fluid diagenetic system is the key to improving the reservoir quality, mainly developing pore-vug-crack complex reservoirs.
關鍵詞
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Eastern Sichuan Basin, Changxing Formation, dolomite reservoir, diagenesis, geochemicalcharacteristics, diagenetic system