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针对目前塔里木库车山前构造裂缝性砂岩气藏埋藏深、压力高,钻井取心困难、取心收获率低且裂缝网络十分发育,难以通过单一室内实验或经验公式获取气藏相对渗透率曲线的问题。本文运用在调研和对比国内外相对渗透率曲线研究方法的基础上,以大北气藏为例,通过室内实验和经验公式两种方法综合研究,从而优选出了适合于大北气藏裂缝网络的相对渗透率计算经验公式。该研究对于将来解决库车山前构造裂缝性气藏相对渗透率研究所面临的难题有很好的借鉴效果,并且也为科学编制大北气藏开发方案提供了技术支撑。
In view of the fact that the fractured sandstone gas reservoirs in the Tarim Basin before piedmont depot buried deep, the pressure is high, the drilling coring is difficult, the coring rate is low and the fracture network is well developed, it is difficult to obtain the relative permeability curve of gas reservoir through a single laboratory experiment or empirical formula The problem. Based on the investigation and comparative study of the relative permeability curves at home and abroad, taking Dabei gas reservoir as an example, through comprehensive study of indoor experiment and empirical formula, the paper is suitable for the fracture network of Dabei gas reservoir The relative permeability calculation empirical formula. The study can be a good reference for solving the problems in the study of the relative permeability of structural fractured reservoirs in the Kuqa area in the future and also providing technical support for the scientific preparation of the Dabei gas reservoir development plan.