Assessment of recoverable oil and gas resources by in-situ conversion of shale——Case study of extracting the Chang 7_(3) shale in the Ordos Basin

作     者：Lian-Hua Hou Xia Luo Sen-Hu Lin Yong-Xin Li Li-Jun Zhang Wei-Jiao Ma Lian-Hua Hou;Xia Luo;Sen-Hu Lin;Yong-Xin Li;Li-Jun Zhang;Wei-Jiao Ma

作者机构：Research Institute of Petroleum Exploration&DevelopmentPetroChinaBeijing100083China National Energy Tight Oil&Gas R&D CenterBeijing100083China School of GeosciencesChina University of PetroleumQingdaoShandong266580China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2022年第19卷第2期

页      面：441-458页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 082002[工学-油气田开发工程] 

基　　金：supported by PetroChina Co Ltd.(Grant number:2015D-4810-02,2018YCQ03,2021DJ52) National Natural Science Foundation of China(Grant number:42172170) 

主　　题：Shale oil In-situ conversion processing Thermal simulation experiment Hydrocarbon generation mechanism Hydrocarbon resource Ordos basin 

摘      要：The purpose of this study is to investigate the entire evolution process of shales with various total organic contents(TOC)in order to build models for quantitative evaluation of oil and gas yields and establish methods for assessing recoverable oil and gas resources from in-situ conversion of organic matters in *** simulation experiments under in-situ conversion conditions were conducted on Chang 7_(3) shales from the Ordos Basin in a semi-open system with large *** results showed that TOC and R_(o) were the key factors affecting the in-situ transformation potential of *** remaining oil and gas yields increased linearly with TOC but inconsistently with R_(o).R_(o) ranged 0.75%—1.25%and 1.05%—2.3%,respectively,corresponding to the main oil generation stage and gas generation stage of shale in-situ *** a model to evaluate the remaining oil/gas yield with TOC and R_(o) was *** TOC of shale suitable for in-situ conversion should be greater than 6%,whereas its R_(o) should be less than 1.0%.Shales with 0.75%(R_(o))could obtain the best economic *** results provided a theoretical basis and evaluation methodology for predicting the hydrocarbon resources from in-situ conversion of shale and for the identification of the optimum“sweet spots.The assessment of the Chang 7_(3) shale in the Ordos Basin indicated that the recoverable oil and gas resources from in-situ conversion of organic matters in shale are substantial,with oil and gas resources reaching approximately 450×10^(8) t and 30×10^(12)m^(3),respectively,from an area of 4.27×10^(4) km^(2).