Geological Characteristics of Shale Gas in Different Strata of Marine Facies in South China  

作　　者：Yufang Wang Gangyi Zhai Guoheng Liu Wanzhong Shi Yongchao Lu Juan Li Yunxiao Zhang 

机构地区：[1]Oil and Gas Survey,China Geological Survey,Beijing 100083,China [2]Key Laboratory of Unconventional Oil and Gas Geology,China Geological Survey,Beijing 100029,China [3]School of Earth Resources,China University of Geosciences,Wuhan 430074,China

出　　处：《Journal of Earth Science》2021年第4期725-741,共17页地球科学学刊（英文版）

基　　金：supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.2016ZX05034);the Shale Gas Strategic Constituency Survey in Chongqing-Hubei-Yunnan-Guangxi provinces(No.DD20190108)。

摘　　要：In the Middle and Upper Yangtze region of South China,there are well developed sets of marine shale strata.Currently only Wufeng Longmaxi shale gas has been developed in scale,while the Sinian and Cambrian shale gas are still under exploration.The various shale strata show different characteristics in lithological features,such as lithofacies types and reservoir physical properties,which are due to the influence of tectonic pattern,sedimentary environment,and diagenesis caused by tectonic subsidence.This will affect the later fracturing technology and fracturing effect.The shale reservoirs of Sinian doushantuo,Cambrian Niutitang,Upper Ordovician Wufeng,and the Lower Silurian Longmaxi Formation shale were evaluated and compared with each other with respect to their sedimentary environments,lithofacies,minerals compositions,and micro pore characteristics.The reservoir characteristics of the shale and the main control factors of shale gas enrichment were summarized in this study.

关 键 词：shale gas marine shale Doushantuo Formation Niutitang Formation Wufeng-Longmaxi Formation reservoir characteristics comparison 

分 类 号：P618.13[天文地球—矿床学]