摘要
煤层气是储集于煤层孔隙中的天然气。煤层与一般的油气层相比，埋藏浅，微孔隙和裂缝发育。煤层的机械强度和孔隙度低，易坍塌、易污染。文中根据煤层气井的特点，介绍了一般油气井固井与煤层气井固井的区别，总结了国内目前煤层气井固井技术现状及存在的问题，提出了几个在以后煤层气井固井中应研究解决的问题。
The coal bed has a low buried depth,developed micropore and fracture,low mechanical strength and porosity in comparison with the normal oil and gas formation,so it is easy to collapse and easy to be polluted.This paper introduces the characteristic of coalbed gas well and difference of the cementing technology between oil and gas well and coalbed gas well,summarizes coalbed gas well cementing technology and presents the existent problems in cementing at present Suggestions are given about improving coalbed gas well cementing quality
出处
《钻采工艺》
CAS
2000年第1期13-16,共4页
Drilling & Production Technology
关键词
煤层气
固井技术
天然气
气井
coalbed gas,cementing technique,two-stage cementing,plug displacement,low-density cement
