二类油层三元复合驱措施优化研究

大庆油田二三类油层非均质性严重,三元液沿着高渗透层突进,中低渗透层动用程度较低,影响了整体驱油效果。分层注入技术可有效缓解层间矛盾,改善注入剖面,提高油层动用程度。三元复合驱开发过程中采液指数降低,提液可以减缓产液量下降提高开采效果。采用CMG软件模拟三元复合驱分层和提液,并对分层和提液时机进行优化,使三元复合驱开发效果达到最优。

Optimization of ASP Flooding for Type II Reservoirs

Reservoir heterogeneity in medium and low permeable reservoirs of Daqing oil field is serious, ternary liquid flings along the high permeability layer, and producing extent in low permeability layer is low, thus the overall oil displacement effect is poor. Layered injection technology can effectively relieve the interlayer contradictions and improve injection profile to enhance producing degree of reservoir. Increasing productivity can retard fluid productivity index reducing in ASP flooding process to improve development effect. In this article, CMG software was used to simulate layered injection and increasing productivity of ASP flooding and timing optimization to make the ASP flooding effect achieve the optimization.