Drilling and completion technologies of coalbed methane exploitation: an overview

作     者：Tianshou Ma Jinhua Liu Jianhong Fu Bisheng Wu Tianshou Ma;Jinhua Liu;Jianhong Fu;Bisheng Wu

作者机构：State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengdu 610500SichuanChina State Key Laboratory of Hydroscience and EngineeringDepartment of Hydraulic EngineeringTsinghua UniversityBeijing 100084China 

出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)

年 卷 期：2022年第9卷第5期

页      面：1-31页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：supported by the Youth Scientific and Technological Innovation Team Foundation of Southwest Petroleum University(2019CXTD09) the Program of Introducing Talents of Discipline to Chinese Universities(111 Plan)(D18016) 

主　　题：Coalbed methane CBM Exploitation Drilling Completion Horizontal well L/U/V-shaped well Multilateral well 

摘      要：Coalbed methane(CBM)drilling and completion technologies(DCTs)are signifcant basis for achieving efcient CBM exploration and *** of CBM reservoirs vary in diferent regions around the world,thereby,it is crucial to develop,select and apply the optimum DCTs for each diferent CBM *** paper frstly reviews the development history of CBM DCTs throughout worldwide and clarifes its overall development ***,diferent well types and its characteristics of CBM exploitation are summarized,and main application scopes of these well types are also ***,the key technologies of CBM drilling(directional drilling tools,measurement while drilling,geo-steering drilling,magnetic guidance drilling,underbalanced drilling and drilling fuids),and the key technologies of CBM completion(open-hole,cavity and under-ream completion,cased-hole completion,screen pipe completion and horizontal well completion)are summarized and analyzed,it is found that safe,economic and efcient development of CBM is inseparable from the support of advanced ***,based on the current status of CBM development,the achievements,existing challenges and future prospects are summarized and discussed from the perspective of CBM DCTs.