Evaluation of chemistry flooding development effect of Liaohe oilfield H block

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%.