应力释放构造煤煤层气开发理论与关键技术研究进展  

Research advances in theory and technology of the stress release applied extraction of coalbed methane from tectonically deformed coals

作　　者：桑树勋[1,2] 周效志[1,2] 刘世奇[3,4] 王海文[5] 曹丽文[1,2] 刘会虎[6] 李自成[7] 朱术云[1,2] 刘长江 黄华州[1,2] 徐宏杰[6] 王冉[1,2] 贾金龙[9] ASHUTOSH Tripathy[1,2] 韩思杰 SANG Shuxun;ZHOU Xiaozhi;LIU Shiqi;WANG Haiwen;CAO Liwen;LIU Huihu;LI Zicheng;ZHU Shuyun;LIU Changjiang;HUANG Huazhou;XU Hongjie;WAMG Ran;JIA Jinlong;ASHUTOSH Tripathy;HAN Sijie(School of Mineral Resource and Geoscience,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process (Ministry of Education),China University of Mining and Technology,Xuzhou 221116,China;Low Carbon Energy Institute,China University of Mining and Technology,Xuzhou 221008,China;Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization,China University of Mining and Technology,Xuzhou 221008,China;School of Petroleum Engineering,China University of Petroleum (East China),Qingdao 266580,China;School of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China;School of Electrical and Information Engineering,Wuhan Institute of Technology,Wuhan 430205,China;School of Geosciences,China University of Petroleum (East China),Qingdao 266580,China;School of Resources & Safety Engineering,Wuhan Institute of Technology,Wuhan 430074,China)

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116 [2]中国矿业大学,煤层气资源与成藏过程教育部重点实验室,江苏徐州221116 [3]中国矿业大学低碳能源研究院,江苏徐州221008 [4]中国矿业大学,江苏省煤基温室气体减排与资源化利用重点实验室,江苏徐州221008 [5]中国石油大学(华东)石油工程学院,山东青岛266580 [6]安徽理工大学地球与环境学院,安徽淮南232001 [7]武汉工程大学电气信息学院,湖北武汉430205 [8]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [9]武汉工程大学资源与安全工程学院,湖北武汉430074

出　　处：《煤炭学报》2020年第7期2531-2543,共13页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(41727801)。

摘　　要：构造煤煤层气高效开发是我国煤层气资源禀赋的选择,构造煤储层与煤层气赋存特征决定了疏水降压煤层气开发理论技术不再适合构造煤储层,应力释放(原位)煤层气开发理论技术是新的技术方向,有望将构造煤煤储层从煤层气开发禁区变为新领域,同时也有望成为煤矿煤与瓦斯突出治理、煤矿区甲烷温室气体减排的治本之策。依托国家重大科研仪器研制项目,以应力释放构造煤煤层气开发关键实验平台和工程装备原理机为基本定位,以开发理论创新、技术原理探索为先导,以装置、装备及其工艺技术为研究核心,应力释放构造煤煤层气开发理论技术研究取得重要和实质性进展。探索构建了应力释放煤层气开发理论技术基础,阐明了水平井造洞穴应力释放构造煤原位煤层气开发的工程原理。水平井造洞穴应力释放构造煤原位煤层气开发模拟试验系统已完成设计进入加工阶段,系列配套基础实验取得了重要数据;探索建立了构造煤储层应力释放与煤层气解吸扩散关系模型;揭示了应力释放构造煤煤层气开发煤储层渗透率变化规律。研发形成了构造煤储层大口径水平井双向往复式钻进+多级扩孔+复杂循环钻井液成井、水平井泵注+喷射诱导控制造洞穴应力释放与储层激励、气/水/高浓度煤粉混合物直井射流泵+配套井底装置组合高效举升、产出物地面高效重力分离+回收+水循环、煤层气应力释放开发装置(装备)数据采集和控制系统等应力释放构造煤煤层气开发关键技术。The efficient exploitation of coalbed methane(CBM)in tectonically deformed coals(TDC)is the choice of China’s resource endowment of CBM.Current CBM exploitation theory of dewatering-depressure-desorption is unfit for tectonically deformed coal seams,which determined by the characteristics of TDC and the occurrence characteristics of CBM in TDC.The stress release applied extraction of CBM is a new theory and technology,which is expected to transform TDC from the forbidden zone of CBM exploitation into a new field.Meanwhile,it will be a fundamental solution of coal and gas outburst control and greenhouse gas emissions(methane)in coal mine.Supported by the National Key Project for Scientific Instrument and Equipment Research and Development,the work took the key experimental platform and engineering equipment prototype of the stress release applied extraction of CBM as the basic positioning,took exploitation theory innovation and technical principle exploration as the forerunner,and took the device,engineering equipment,and technology of the stress release applied extraction of CBM as the core research content.Based on this research,the theory and technology of the stress release applied extraction of CBM has been made important and substantial progress.Currently,the theoretical and technical basis of the stress release applied extraction of CBM has been explored,which expounds the mechanical principles of the TDC in-situ CBM recovery by horizontal well cavern completion and stress relief.The design of analogue experiment system for the TDC in-situ CBM recovery by horizontal well cavern completion and stress relief has been completed,and entered the processing,based on which some important results have been obtained according to a series of supporting basic experiments,including the establishment of relation model between the stress relief of TDC and the desorption and diffusion of CBM,and the reveal of the variation rules of TDC permeability caused by the stress release applied extraction.Based on the design of t

关 键 词：构造煤 原位煤层气 应力释放开发 煤与瓦斯突出 

分 类 号：P618.11[天文地球—矿床学]