The progress and prospects of shale gas exploration and development in southern Sichuan Basin, SW China

作     者：MA Xinhua XIE Jun 

作者机构：PetroChina Southwest Oil & Gas Field Company 610051 Chengdu China 

出 版 物：《Petroleum Exploration and Development》 (石油勘探与开发（英文版）)

年 卷 期：2018年第45卷第1期

页      面：172-182页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 081803[工学-地质工程] 08[工学] 0820[工学-石油与天然气工程] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 0814[工学-土木工程] 082002[工学-油气田开发工程] 

基　　金：Supported by the China National Science and Technology Major Project(2016ZX05062) 

主　　题：Sichuan Basin southern Sichuan Basin shale gas Ordovician Wufeng Formation Silurian Longmaxi Formation resource potential 

摘      要：The Ordovician Wufeng Formation-Silurian Longmaxi Formation organic-rich shales distributed widely and stably in Southern Sichuan Basin were investigated based on drilling *** evaluation of wells show that the shale reservoirs have good properties in the Yibin,Weiyuan,Zigong,Changning,Luzhou,Dazu areas,with key parameters such as TOC,porosity,gas content similar to the core shale gas production ***,these areas are stable in structure,good in preservation conditions and highly certain in *** shale reservoirs have a burial depth of 4 500 m or shallow,a total area of over 2×10~4 km^2 and estimated resource of over10×10^(12) m^3,so they are the most resource-rich and practical areas for shale gas exploitation in *** construction of the Changning-Weiyuan national demonstration region,the production and EUR of shale gas wells increased significantly,the cost of shale gas wells decreased remarkable,resulting in economic benefit better than ***,the localized exploration and development technologies and methods are effective and repeatable,so it is the right time for accelerating shale gas *** on the production decline pattern of horizontal wells at present and wells to be drilled in the near future,at the end of the 13th Five Year Plan,the production of shale gas in southern Sichuan Basin is expected to reach or exceed 10 billion cubic meters per *** resources are sufficient for a stable production period at 30 billion cubic meters per year,which will make the South Sichuan basin become the largest production base of shale gas in China.