煤层气井产能预测及提高产能方法

Coalbed methane well productivity prediction and productivity enhancement method

针对煤层气井产能预测需求,结合实例,采用多元回归分析方法建立了煤层气井产能预测模型,并对该模型与GM(1,1)模型的应用效果展开了比较。从研究结果来看,采用多元回归模型可以实现煤层气井产能精确预测,得知在流压增大的情况下,日产气量会随之降低,还要采取注气增产技术加大生产压差,以达到提高产能的目的。

In view of the demand of CBM well productivity prediction,a CBM well productivity prediction model is established by means of multiple regression analysis,and its application effect is compared with GM(1,1)model.From the research results,the multiple regression model can be used to accurately predict the productivity of CBM wells.The daily gas production will decrease with the increase of flowing pressure.Gas injection technology should be adopted to increase production pressure difference so as to improve productivity.