页岩气井产能影响因素分析

Analysis of influencing factors on shale gas well productivity

以室内实验为基础,运用数值模拟方法,研究了页岩储层性质和压裂后裂缝性质对页岩气产能的影响规律,得到了各影响因素与页岩气产能之间的关系。研究表明,单翼裂缝并不能达到页岩气增产的目的,页岩气压裂后改造体积的大小是影响产能的关键,压裂过程中支裂缝条数越多,改造体积越大,增产效果越明显。

Numerical simulation is conducted based on laboratory test to study the influences of shale reservoir quality and fracture property after fracturing on shale gas production,thus obtained the relationships between influencing factors.The research indicates that fractures on one side can not increase shale gas production;the volume of fractured shale gas reservoir is the key factor affecting productivity;the more the number of fractures is,the bigger the fractured volume is,the more efficient the fracturing stimulation is.