College of Geosciences and Surveying Engineering, China University of Mining and Technology (Beiing)

为了查明煤层气排采过程中煤粉的产出对煤层气开发的影响,以韩城区块为研究区,对煤层气井排采现场进行观察与监测,并进行煤岩煤粉测试和物理模拟试验,从现场实际煤粉产出状况,分析了韩城区块煤粉对煤层气井排采的影响和煤粉产出的影响因素,划分了煤层气井煤粉产出的4个阶段。结果表明:排采初期和产气量快速上升期是煤层气井卡泵的高峰期,煤粉的产出受多种因素的综合作用,指出了构造煤发育是煤粉产生的主控因素。

In order to find the impact of the pulverized coal output during coalbed methane drainage on the development of the coalbed methane, taking Hancheng Block as the experimentation area, this paper analyzed the effect of pulverized coal for coalbed methane drainage and the influencing factors of the pulverized coal out put according to the actual situation of pulverized coal output, and the pulverized coal output of coalbed methane well was classified into four phases by the field observ ation and monitoring the pulverized coal, testing the pulverized coal and coal, and the pulverized coal output under physical simulation experiments. The results showe d that the peak period of CBM Wells stuck pump was at the early stage of drainage and the rapidly rising stage of gas production, and the pulverized coal output was inf luenced by many kinds of factors, and the development of tectonic coal was the key factor of the pulverized coal output.

国家科技重大专项资助项目(2011ZX05038-01)；国家自然科学基金资助项目(41272181,41272179)；