辽河油田H区块化学调驱开发效果评价

Evaluation of chemistry flooding development effect of Liaohe oilfield H block

针对辽河油田H区块已经采取化学调驱的现场实际情况,结合其地质特征,从注入井与采油井两方面对其化学调驱开发效果进行评价。分别根据注入井的井口注入压力、吸水剖面和采油井的增油效果、采收率、含水状况等评价指标对该区块进行了综合评价,结果表明:调驱剂的有效封堵提高了中低渗透层的产油量,达到了较好的增油降水效果,最终采收率增加了0.4%,综合含水上升率下降了5.1%。

Based on the site real condition of the application of chemistry flooding in Liaohe oilfield H block,combined with the geological feature,evaluate its chemistry flooding development effect in the injection well and production well.Using separately the evaluation indexes as wellhead injection pressure in injection well,water injection profile,oil incremental effect,recovery efficiency,water cut in production well to evaluate comprehensively the study block.The result indicated: effective plugging of oil displacement profile control agent enhanced the oil output of middle and low permeable reservoir,reached better oil increasing and water decreasing effect.The final recovery ratio increased 0.4%,the synthetic water cut increased rate dropped 5.1%.