吐哈盆地沙尔湖地区煤层气钻完井适用技术探讨  

Research on appropriate exploration technology of coalbed gas of Shaerhu district,Tuha basin

作　　者：崔思华[1,2] 王勃[3,2] 苗书雷[4] 赵洋 熊波 王赟 林丽 

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油勘探研究院廊坊分院,河北廊坊065007 [3]中国矿业大学资源与地球科学学院,江苏徐州221008 [4]河南理工大学,河南焦作454000 [5]渤海钻探第二录井公司,河北廊坊065007

出　　处：《河南理工大学学报（自然科学版）》2012年第3期299-304,316,共7页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家重大专项(2011ZX05033-001);国家973计划项目(2009CB219601)

摘　　要：在剖析美国圣胡安盆地煤层气空气钻井、裸眼洞穴完井技术及优势的基础上,确定了低煤阶煤层气钻井及裸眼洞穴完井的煤储层条件等,并以吐哈盆地沙尔湖地区低煤阶煤层气为主要研究对象,利用类比法及地质统计法,具体分析了吐哈盆地沙尔湖地区的煤储层厚度、含气量、渗透率、井壁稳定性及储层压力条件等.研究表明,沙尔湖地区煤层厚度大,储层物性好,井壁稳定性好,可采用低成本空气钻井及裸眼完井技术提高钻井效率,保护煤储层,提高煤层气采收率.Development of the drilling and well completion technology of coalbed methane （CBM） is very important to break through CBM exploration of low rank coal reservoirs. Based on the analysis of the advantages of air drilling and bare hole cave completion technologies in San Juan Basin, America, the coal reservoir condition of drilling and well caving completion of CBM was determined. Further, regarding Shaerhu district in Tuha Coal Basin as the main study area,the coal seam thickness, gas content, permeability, borehole stability, and reservoir pressure of low rank CBM reservoir were analysed by analogy method and geo-statistic method. The results show that the coal seams to have huge thickness, high permeability and borehole wall stability in the study area. And the study points out that the technology of low cost air drilling and bare hole completion can be used to improve drilling efficiency, protect coal reservoir and thus improve CBM recovery rate in this area.

关 键 词：吐哈盆地 沙尔湖 煤层气 空气钻井 

分 类 号：TE24[石油与天然气工程—油气井工程]