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

doi:10.1016/j.marpetgeo.2018.08.008

CORC > 地质与地球物理研究所 > 中国科学院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

	Hydrogeomorphologic architecture of epikarst reservoirs in the Middle-Lower Ordovician, Tazhong Uplift, Tarim Basin, China
	Zhang, Heng 1,2; Cai, Zhongxian 1,2; Hao, Fang 3; Qi, Lixin 4; Yun, Lu 4; Jiang, Lei 5,6
刊名	MARINE AND PETROLEUM GEOLOGY
	2018-12-01
卷号	98 页码:146-161
关键词	Hydrogeomorphologic architecture Karren Epikarst reservoir Karst evolution Karst reservoir development model Tazhong uplift
ISSN号	0264-8172
DOI	10.1016/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.
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关键词	POROSITY ; ORIGINS ; CARBON ; KARST
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
内容类型	期刊论文
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.