M气藏水平井压裂方案优选研究

Study on optimization of horizontal well fracturing scheme in M gas reservoir

针对超低渗气藏低孔隙度、低渗透率、低丰度,初期产能低,常规开发难度大等问题,采用油藏数值模拟方法和油藏工程分析法,进行了气藏水平井裂缝半长、压裂级数、裂缝方位、压裂规模等参数优选研究;最终优选出:裂缝半长150 m,裂缝条数8条,裂缝与水平井段成垂直,裂缝导流能力在20~30μm^2·cm。水平井压裂方案优选研究对致密气藏后期的开发具有重大意义。

Aiming at the problems such as low porosity,low permeability,low abundance,low initial productivity and great difficulty in conventional development,reservoir numerical simulation method and reservoir engineering analysis method were adopted,the parameters such as fracture length,fracture series,fracture azimuth and fracturing scale of horizontal wells in gas reservoirs were optimized,and the results were as follows： fracture half length 150 m,the number of fractures is 8,and the fracture is perpendicular to the horizontal well section,vertical fracture conductivity is 20 ~ 30 μm^2·cm. The above research is of great significance for the later development of tight gas reservoirs.