Reservoir characteristics and controlling factor of shale gas in Lower Cambrian Niutitang Formation, South China
作者机构：Geoscience Documentation CenterChina Geological SurveyBeijing100083China National Geological Library of ChinaBeijing100083China State Key Laboratory of Petroleum Resources and ProspectingChina University of PetroleumBeijing102249China Unconventional Natural Gas Research InstituteChina University of PetroleumBeijing102249China School of Energy ResourceChina University of GeosciencesBeijing100083China Sinopec Shanghai Offshore Petroleum CompanyShanghai200120China
出 版 物：《Petroleum Research》 (石油研究（英文）)
年 卷 期：2018年第3卷第3期
页 面：210-220页
核心收录：
学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程]
基 金：The work was supported by the Geological Information Comprehensive Research Project of China Geological Survey(No.121201015000150002) Basic Geological Survey Project of Shale Gas in South China of China Geological Survey(No.12120114046701)
主 题：Organic pores TOC Thermal evolution degree Shale Niutitang formation Lower cambrian South China
摘 要：Large-scale exploration and development of shale gas in Lower Cambrian Niutitang Formation of South China has been carried out in recent years,but the result is not good,only except some drilling wells in Jingyan-Qianwei area of Sichuan Basin and Yichang of Hubei obtain some commercial gas *** order to clarify reasons for failure of shale gas exploration and development in Niutitang Formation around Sichuan Basin and to provide reservoir geological parameters for subsequent efficient exploration and development,taking a case of shale gas reservoirs in Lower Cambrian Niutitang Formation in northeast Chongqing around Sichuan Basin,some experimental methods,such as analysis of organic carbon pyrolysis,determination of equivalent vitrinite reflectance,focused ion beam scanning electron microscope(FIB-SEM)and other are adopted in this *** results show that the average TOC of shale samples in Niutitang Formation in northeast Chongqing is 3.1%,the equivalent vitrinite reflectance ranges from 3.0%to 4.0%,and the degree of thermal evolution reaches the post-matureemetamorphic *** to excessively high degree of the thermal evolution,organic pores in shale samples are not developed in Lower Cambrian Niutitang Formation in the study area,instead,micro-nano pores dominated by intergranular pores and intragranular pores are developed in the *** degree of the thermal evolution controls the sustaining gas generation of kerogen and retained liquid hydrocarbons in the shale,it also controls the development of organic pores of the *** evolution of organic pores and hydrocarbon generation in the shale of Niutitang Formation in northeast Chongqing around Sichuan Basin do not match best with each other,that is,during development period of a large number of organic pores,thermal evolution degree of reservoirs is further enhanced because the strata are not uplifted in time,therefore,the quantity of organic pores is decreased sharply,the shale gas would be escape
维普期刊数据库