沁南盆地柿庄南区块煤层气开发工艺适用性分析  

Analysis on the applicability of CBM development technologies in the Shizhuang South Block of the Qinnan Basin

作　　者：薛海飞[1] 王建中[1] 王力[1] 王伟 刘广景 杨刚 XUE Haifei;WANG Jianzhong;WANG Li;WANG Wei;LIU Guangjing;YANG GANG(Taiyuan Branch,China United Coalbed Methane Co.Ltd.,Taiyuan 030006,Shanxi,China;China United Coalbed Methane Co.Ltd.,Beijing 100015,China)

机构地区：[1]中联煤层气有限责任公司太原分公司

出　　处：《石油钻采工艺》2019年第4期412-417,共6页Oil Drilling & Production Technology

基　　金：中海油京直地区青年科技项目“沁水盆地柿庄区块煤体结构对煤层气开发的影响及解决对策”(编号：JZTW2019KJ26);中联公司青年科技项目“柿庄南区块钻完井工艺适用性研究”(编号：ZLTW2018KJ11)

摘　　要：我国煤层气平均单井产量偏低,如何快速提高单井产气量是当前亟待解决的问题。基于不同煤储层的地质条件,选择科学的配套工程技术是提高煤层气开发效益的关键。以沁南盆地柿庄南区块为例,基于大量的试验数据和工程实践,提出影响煤层气开发效果的主导地质因素,总结已实施钻完井工艺的优缺点和适用性,优选出适合研究区地质特征的开发技术。研究结果表明:影响柿庄南区块煤层气开发工艺效果的地质因素主要是地应力、煤体结构和地质构造;对于类似柿庄南区块地质特征的低渗储层,选择水平井开发更为高效;断层对煤层气开发影响较大。In China, average single-well production of coalbed methane(CBM) is lower, so it is in urgent need to find the way to increase single-well CBM production rapidly. The key to improve CBM development benefit is to select the scientific support engineering technologies based on the geological conditions of different coal reservoirs. In this paper, the Shizhuang South Block in the Qinnan Basin was taken as an example. Based on sufficient experimental data and engineering practice, the dominant geological factors influencing CBM development effects were pointed out, the advantages, disadvantages and applicability of existing drilling and completion technologies were summarized, and the development technologies suitable for the geological characteristics of the study area were selected. It is indicated that the main geological factors influencing CBM development effects of Shizhuang South Block are ground stress, coal structure and geological structure. As for the low-permeability reservoirs with similar geological characteristics to Shizhuang South Block, horizontal well is the effective development technology. Faults have greater effects on CBM development.

关 键 词：煤层气 开发工艺 适用性 地应力 煤体结构 水平井 沁南盆地 柿庄南区块 

分 类 号：TE37[石油与天然气工程—油气田开发工程]