摘要
根据凝析气在多孔介质中渗流时的相变特征,建立凝析油-气两相渗流方程。通过引入凝析油-气两相拟压力函数,将渗流方程线性化,得出适合于凝析气藏水平井实际情况的三区油气渗流模型,并求出凝析油-气拟压力分布的解析解。考虑不同水平和顶底边界情况,并对井底压力动态变化及影响因素进行分析和讨论。该方法更符合凝析气藏水平井开采过程的真实情况,对凝析气藏开采具有指导意义。
According to the phase transition characteristics of condensate gas flow in porous medium, two transfusion equations are established and the equations introduced by dual-pseudo pressure of condensate oil-gas are lineated. The three-zone condensate oil-gas flow model suitable to the real situation of horizontal wells and the analytical solutions in the Laplace space are obtained. Based on the different horizontal and vertical boundaries and the plotted corresponding type curves, the performance changes and influence factors of bottom-hole pressure are analyzed. Study shows that this new model is more conformable to the real conditions in the process of production and has practical guiding meanings to condensate gas field exploitation.
出处
《断块油气田》
CAS
2008年第2期54-57,共4页
Fault-Block Oil & Gas Field
基金
中石化西北油田分公司项目“缝洞型油气藏压裂动态参数反求研究”(GY-KY2006-48)资助
关键词
凝析气藏
水平井
三区复合模型
试井分析
condensate gas reservoir, horizontal well, three-zone composite model, well test analysis.
