摘要
在晋城市成庄矿区4308工作面进行了采动区煤层气地面井抽采试验,针对试验点地质特点,设计出试验井井身结构,分析了钻井在工作面推过前后的抽采数据,并先后4次对套管变形情况进行了考察。试验发现,地面井抽采纯流量最高达8 m3/min,但是如何保证套管的稳定性是需要解决的关键问题。
The coal bed gas ground well extraction test of mining subsidence area in 4308 working face of Chengzhuang coal mine in Jincheng city was done. Aiming at the geological characteristics of the test point, the body structure of test well was designed, and the drilling extraction datum before and after working face passed through were analyzed. The casing deformation were investigated four times. The test found that the extration pure flow of ground well reached to 8 m3/min. But, how to maintain the stability of casing is still a problem which should be resolved.
出处
《煤矿安全》
CAS
北大核心
2012年第8期11-13,共3页
Safety in Coal Mines
基金
大型油气田及煤层气开发科技重大专项资助项目(2011ZX05040-004)
国家自然科学基金青年科学基金资助项目(50904034)
关键词
地面井
煤层气抽采
采动影响区
套管损坏
防护措施
Found well
coalbed gas extraction
infection zones of coal mining
casing damage
protective measures
