School of Petroleum Engineering, China University of Petroleum (Beiing) MOE Engineering Research Center of
Gas Energy Development and Utilization, China University of Petroleum (Beiing) CNOOC Enter Tecrh-driling &
Production Co. Shanxi Blue Flame Coal Bed Methane Group Corporation Limited SGS Unconventional Oil and
Gas Technical Testing (Beijing) Company China Oilfield Services Limited

为了获得沁水盆地某区块煤层气储层的连通性以及彼此间的优势渗流方向,利用该区块的SH-39、SH-47、SH-48、SH-49井作为测试井组进行煤层气干扰试井。在观察井中下入精密直读式压力计,然后以一定的排量向激动井中注水,通过对激动井井底压力的变化进行分析和解释,结果表明:SH-39井与SH-48井、SH-49井是连通的,而且观测井SH-48与激动井SH-39之间地层的连通性略优于观测井SH-49与激动井SH-39之间地层的连通性,从而得出测试区域煤层气储层的优势渗流方向为北东方向,此结论为该区块煤层气的井网布置和井网优化提供了依据。

In order to have the connectivity of the coalbed methane reservoir in the Block of Qinshui Basin and the preferential seepage direction between the well s, No. SH- 39, No. SH- 47, No. SH- 48 and No. SH- 49 wells as the test well group were applied to the interference test wells of the coalbed methane well. Precision dir ect- reading pressure gauges were set down in the observation wells and a water injection with certain volume was made into the active well. With the analysis and expl anation conducted on the pressure variations at the bottom of the active well, the connectivity of the reservoir and the preferential seepage direction between the wells could be obtained.The results showed that No. SH- 39 well was connected with No. SH- 48 well and No. SH- 4 well, the strata connectivity between the observation well - -No. SH- 48 well and the active well- -No. SH- 9 well was a lttle better than the connectivity between the observation well- -No. SH- 49 well and the active well- -No. S H- 39 well. Therefore, the preferential seepage direction of the coalbed methane reservoir in the regional measured was in a north- east direction and could provide the basis to the well network layout of the regional coalbed methane and well network optimization.

国家科技重大专项资助项目(2011ZX05034-003；2011ZX05063)；