煤层气井排采初期井底压降的计算方法  

Calculation Methods of Well Bottom-hole Pressure Drop in Initial Stage

作　　者：司庆红[1] 朱炎铭[1] 曹新款[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏221116

出　　处：《中国煤层气》2011年第1期37-39,共3页China Coalbed Methane

基　　金：国家基础研究发展计划(973项目:2009CB219605);国家科技重大专项(No:2008ZX05034-04)

摘　　要：本文根据沁水盆地潘庄3^#煤层气井的相关资料及排采曲线得出临界解吸压力与产气压力的拟合关系并结合实测储层压力得出排采初期的井底压降，为确定煤层气井初始排采初期合理的排采强度做准备，对提高煤层气井产气稳定期和采收率有重要的现实意义。Based on the related data of 3^# coalbed methane well in Panzhuang and the drainage curve, the paper analyzes the relationship of the critical desorption press of botton-hole and the drainge pressure, and obtains the well bottom-bole pressure drop in initial combined with actual reservoir pressure which is in preparation for detemination of reasonable drainage intensity of initial coadbed methane drainage. It is of great significance to determine the pressure and to improve the stability and recovery of coalbed methane well.

关 键 词：临界解吸压力 产气压力 井底压降 储层压力 

分 类 号：P618.11[天文地球—矿床学]