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Hydrogeomorphologic architecture of epikarst reservoirs in the Middle-Lower Ordovician, Tazhong Uplift, Tarim Basin, China

文献类型：期刊论文

作者Zhang, Heng1,2; Cai, Zhongxian1,2; Hao, Fang3; Qi, Lixin4; Yun, Lu4; Jiang, Lei5,6
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2018-12-01
卷号98页码:146-161
ISSN号0264-8172
关键词Hydrogeomorphologic architecture Karren Epikarst reservoir Karst evolution Karst reservoir development model Tazhong uplift
DOI10.1016/j.marpetgeo.2018.08.008
英文摘要Paleokarst vugs and fissures in the Middle-Lower Ordovician from the Tazhong Uplift have been a productive unit in the Tarim Basin for more than two decades. A new approach was applied to delineate the characteristics of these reservoirs by integration of 3D seismic data with thin sections, cores, and imaging logs, as well as related geochemical analysis. Reconstructed hydrogeomorphologic architecture was defined to illustrate the origin of the paleokarst reservoirs in this study. Fissures and fissure-vugs of epikarst reservoirs are the predominant pore type in the Central Uplift in the Tazhong area, which pervasively distributed as planes and steps in shallow depth of 0-30 m below the regional unconformity (T-7(4)). The favorable position for reservoir development was intimately related to fissures and faults in NE and NWW directions. Surface topography of the Middle-Lower Ordovician was flat initially, with karren as the most widespread landform category. Hence, surface water tended to be sheet flow and concentrated in places where karrens and cracks developed well, and thus the infiltration strength and exhumation capacity of surface water suffered from extensive constrains due to limited hydraulic gradient, which resulted in immature drainage system and incomplete karst sequence. Therefore, the hydrogeomorphologic architecture in the Middle-Lower Ordovician was likely lack of surface drainages, and a fissure-seepage karst reservoir development model was established to interpret the influence of hydrogeomorpholoic architecture on paleokarst reservoirs distribution. This study confirms that paleokarst fissure-vug system developed in karst initiation period can still be potential petroleum -bearing target in deeply buried subsurface.
WOS关键词POROSITY ; ORIGINS ; CARBON ; KARST
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA14010302] ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China[TPR-2017-05]
WOS研究方向Geology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000451360000010
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China ; Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, China
源URL[http://ir.iggcas.ac.cn/handle/132A11/89599]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Cai, Zhongxian
作者单位1.China Univ Geosci, Minist Educ, Key Lab Tecton & Petr Resources, Wuhan 430074, Peoples R China
2.China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China
3.China Univ Petr, Sch Geosci, Qingdao 266580, Peoples R China
4.SINOPEC, Northwest Oilfield Co, Urumqi 830011, Xinjiang, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Heng,Cai, Zhongxian,Hao, Fang,et al. Hydrogeomorphologic architecture of epikarst reservoirs in the Middle-Lower Ordovician, Tazhong Uplift, Tarim Basin, China[J]. MARINE AND PETROLEUM GEOLOGY,2018,98:146-161.
APA Zhang, Heng,Cai, Zhongxian,Hao, Fang,Qi, Lixin,Yun, Lu,&Jiang, Lei.(2018).Hydrogeomorphologic architecture of epikarst reservoirs in the Middle-Lower Ordovician, Tazhong Uplift, Tarim Basin, China.MARINE AND PETROLEUM GEOLOGY,98,146-161.
MLA Zhang, Heng,et al."Hydrogeomorphologic architecture of epikarst reservoirs in the Middle-Lower Ordovician, Tazhong Uplift, Tarim Basin, China".MARINE AND PETROLEUM GEOLOGY 98(2018):146-161.

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来源：地质与地球物理研究所

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