二流量试井在低渗砂岩气田储层动态评价中的应用

Application of Two Production Wells Testing in Low Permeabile Sandstone Reservoir Performance Evaluation

袁铁群,李会祥,刘长王番,吴向前

Yuan Tiequn, Li Huixiang, Liu Changfan, et al

中原油田分公司

Natural Gas Production and Sales Company , Zhongyuan Oil/ Gas Field Co. Ltd. , Henan 457061 , P. R. China

关井压力恢复试井是现场应用最为广泛的不稳定试井,是解决气井平均气藏压力及储层参数的有力手段,但由于需关闭气井影响正常生产、且对于低渗气藏试井时间长等不足之处,为了寻找另一种试井途径来弥补其不足,从不稳定渗流理论出发,提出了二流量不关井压力恢复试井方法。经实际应用效果分析,本方法可行、有效,基本能达到关井压力恢复试井等效的结果。

Well testing by closing wells to build – up pressure is widely used in transient well testing , which is a valid means to solve average gas reservoir pressure and reservoir parameters of wells ,but that wells need to be closed , result s in influencing the normal working of gas wells , moreover , these low permeability reservoir is always lack of a enough time to test well. In order to make up for its shortage , we come up with two production wells without closing to resume pressure well testing in light of the theory transient pervade. That new means is used in practice and we find it is valid and efficient. The two production well testing can achieve the same efficiency of closing well to resume pressure well testing.