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Effect of pore structure on shale oil accumulation in the lower third member of the Shahejie formation, Zhanhua Sag, eastern China: Evidence from gas adsorption and nuclear magnetic resonance

文献类型：期刊论文

作者Li, Tingwei1,2; Jiang, Zhenxue1,2; Xu, Chenlu3,4; Liu, Bo5; Liu, Guoheng1; Wang, Pengfei6; Li, Xin1,2; Chen, Weitao1,2; Ning, Chuanxiang7; Wang, Zhi1,2
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2017-12-01
卷号88页码:932-949
ISSN号0264-8172
关键词Zhanhua Sag Es-3(1) Member Pore Structure Shale Oil Accumulation Gas Adsorption Nuclear Magnetic Resonance
DOI10.1016/j.marpetgeo.2017.09.030
文献子类Article
英文摘要As shale oil occurs primarily in micro nano pores and fractures, research about the effect of pore structure on shale oil accumulation has great significance for shale oil exploration and development. The effect of pore structure on shale oil accumulation in the lower third member of the Shahejie formation (Es-3(1)), Zhanhua Sag, eastern China was investigated using gas adsorption, soxhlet extraction, nuclear magnetic resonance (NMR) analysis, and field emission scanning electron microscope (FE-SEM) observation. The results indicated that the samples contained a larger amount of ink-bottle-shaped and slit shaped pores after extraction than before extraction. The pore volume and specific surface area of the samples were approximately 2.5 times larger after extraction than before extraction. Residual hydrocarbon occurred primarily in the free-state form in pores with diameters of 10-1000 nm, which can provide sufficient pore volume for free hydrocarbon accumulation. Therefore, pores with diameters of 10 1000 nm were regarded as "oil-enriched pores", which are effective pores for shale oil exploration, whereas pores with diameters smaller than 10 nm were regarded as "oil-ineffective pores". Samples with only well-developed small pores with diameters smaller than 1000 nm showed high oil saturation, whereas samples with both small pores and also relatively large pores and micro-fractures presented low oil saturation. As the minimum pore size allowing fluid expulsion is 1000 nm, pores with diameters greater than 1000 nm were considered as "oil-percolated pores". Large pores and micro-fractures are generally interconnected and may even form a complex fracture mesh, which greatly improves the permeability of shale reservoirs and is beneficial to fluid discharge. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词NORTHEASTERN BRITISH-COLUMBIA ; MISSISSIPPIAN BARNETT SHALE ; NORTH-CENTRAL TEXAS ; ORDOS BASIN ; ORGANIC-MATTER ; YANCHANG FORMATION ; STORAGE CAPACITY ; LACUSTRINE SHALE ; PETROLEUM EXPULSION ; GEOLOGICAL CONTROLS
WOS研究方向Geology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000416186000061
资助机构National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105) ; National Basic Research Programme of China (973 Project)(2014CB239105)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82142]  
专题中国科学院地质与地球物理研究所
通讯作者Jiang, Zhenxue; Xu, Chenlu
作者单位1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
2.China Univ Petr, Unconvent Nat Gas Res Inst, Beijing 102249, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Northeast Petr Univ, State Key Lab Cultivat Base Jointly Constructed H, Accumulat & Dev Unconvent Oil & Gas, Daqing 163318, Peoples R China
6.China Geol Survey, Geosci Documentat Ctr, Beijing 10083, Peoples R China
7.Sinopec Petr Explorat & Prod Res Inst, Wuxi Res Inst Petr Geol, Wuxi 214126, Peoples R China
推荐引用方式
GB/T 7714		 Li, Tingwei,Jiang, Zhenxue,Xu, Chenlu,et al. Effect of pore structure on shale oil accumulation in the lower third member of the Shahejie formation, Zhanhua Sag, eastern China: Evidence from gas adsorption and nuclear magnetic resonance[J]. MARINE AND PETROLEUM GEOLOGY,2017,88:932-949.
APA Li, Tingwei.,Jiang, Zhenxue.,Xu, Chenlu.,Liu, Bo.,Liu, Guoheng.,...&Wang, Zhi.(2017).Effect of pore structure on shale oil accumulation in the lower third member of the Shahejie formation, Zhanhua Sag, eastern China: Evidence from gas adsorption and nuclear magnetic resonance.MARINE AND PETROLEUM GEOLOGY,88,932-949.
MLA Li, Tingwei,et al."Effect of pore structure on shale oil accumulation in the lower third member of the Shahejie formation, Zhanhua Sag, eastern China: Evidence from gas adsorption and nuclear magnetic resonance".MARINE AND PETROLEUM GEOLOGY 88(2017):932-949.

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来源：地质与地球物理研究所

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