用地面压裂施工资料求取煤岩岩石力学参数的新方法

A new method of determining coal rock mechanical parameters by fracturing treatment materials

提出了应用常规的地面压裂施工压力资料求取煤层岩石力学参数的一种新方法.该方法首先由压裂过程中的地面施工压力计算井底压力,再根据煤岩压裂易形成短宽缝的特点,利用改进的KGD模型,结合受压力控制的煤岩压裂滤失模型,确定了与裂缝扩展延伸相应的缝中压力计算公式.

Put forward a new method applying conventional ground fracturing construction pressure to get coal bed rock mechanical parameters. The new method firstly calculates bottom pressure through ground construction pressure, and then according to the coal bed＇ s fracturing feature which is brief and wide, utilizing the ameliorate KGD model, combining with the derivation endure pressure controlled ingredient filtration model, ascertains the computing formula which gets along with crack propagation extension corresponding slit pressure.