考虑井筒压力损失的水平气井压裂产能影响因素分析

不考虑压裂水平气井水平段压力损失的压裂水平气井被视为理想压裂水平气井，其产量为每条裂缝产量之和，这显然不符合实际情况。为此，进行了相关公式的推导并结合中东某气藏气井压裂的实例，分析了在考虑井筒压力损失的情况下裂缝位置、井筒半径和裂缝半长对压裂气井的产能影响。研究结果表明：端部裂缝的产气量高于中部裂缝的产气量；井筒半径对压裂水平井产能的影响有限；裂缝长度对产能有最优值存在，裂缝不是越长就越好。这些结论对实际气井的压裂增产具有一定的指导意义。

Factors affecting the productivity of fractured horizontal wells considering wellbore pressure loss

An ideal state for a fractured horizontal gas well is generally regarded as the case without considering the pressure loss at the horizontal sections of horizontal wells.The productivity of such gas wells is simply the summation of the productivities at each fracture,which is obviously impractical.Therefore,the corresponding equations are deduced and in combination with such a case of a certain gas reservoir in Middle East.This case study analyzes how the factors,including fracture position,wellbore radius,...