武乡南区块深部煤层气储层特征及试采地质影响因素分析  

Analysis on Characteristics of Deep Coalbed Methane Reservoirs andGeological Factors Influencing Trial Production in Southern WuxiangBlock

作　　者：拜阳 BAI Yang(Shanxi Lanyan Coalbed Methane Engineering Research Co.,Ltd.,Jincheng 048000,China)

机构地区：[1]山西蓝焰煤层气工程研究有限责任公司,山西晋城048000

出　　处：《煤炭技术》2024年第9期97-102,共6页Coal Technology

基　　金：山西省重点研发计划项目(202202080301010);华新燃气集团有限公司科技项目(HX202201,HX202204)。

摘　　要：深部煤层气行业依然处于初步地质研究和工程实践的起步探索阶段,为下步国内深部煤层气的开发提供依据,对武乡南区块进行储层特征及试采地质影响因素研究。结果表明,武乡南主采煤层3_(上)和15煤层,具有埋深较深、煤层含气量分布不均、煤厚变化较大、渗透性差、吸附性强以及地应力高的储层特征。在此地质条件下,武乡南区块采用水平井不固井完井和连油喷砂射孔压裂开发工艺,部分井实现较好产量,但整体表现平均单井产气量低。产气主要受地质储量、构造特征和渗流条件的影响。The deep coalbed methane industry is still in the initial exploration stage of preliminary geological research and engineering practice,providing a basis for the development of deep coalbed methane in China,and conducting research on reservoir characteristics and geological factors affecting trial production in the southern Wuxiang block.The results indicate that the 3_(up) and 15 coal seams in the main coal seam of southern Wuxiang block have reservoir characteristics such as deep burial depth,uneven distribution of coal seam gas content,significant changes in coal thickness,poor permeability,strong adsorption,and high in-situ stress.Under this geological condition,southern Wuxiang block adopts the development process of horizontal well completion without cementing and coiled tubing sandblasting perforation and fracturing.Some wells have achieved good production,but overall,the average single well gas production is low.Gas production is mainly influenced by geological reserves,structural characteristics and seepage conditions.

关 键 词：深部煤层气 武乡南区块 储层特征 地质储量 构造特征 渗流条件 

分 类 号：P618.13[天文地球—矿床学] TD712[天文地球—地质学]