渤海A油田聚合物驱动态规律分析及效果评价

分析了渤海A油田A7井组见效前期和见效明显期动态规律,并采用数值模拟法和广适水驱曲线法评价了增油效果。生产井组在见效前期产液量逐渐上升,含水率先缓慢升高后逐渐保持平稳,产油量保持平稳或略有上升。进入见效明显期后,由于陆续有新井投产,大部分小井组产液量和产油量先上升后逐渐下降,含水率变化分为3种类型。研究其动态特征可对深化认识海上油田聚合物驱开发规律并为及时有效地调整开发措施提供依据。

Analysis on the Dynamic Law and Effect Evaluation of Polymer Flooding in Bohai A Oilfield

This paper analyzes the dynamic law of the early response stage and the effective response stage of A7 well group in Bohai A oilfield,and evaluates the incremental oil effect by numerical simulation method and eurytop-ic water-drive curve method.In early response stage,the liquid producing capacity of the production well groups increases gradually,and the water content first increases slowly and then gradually becomes steady.And the oil production remains stable or slightly increases.In effective response stage, most of well groups′liquid producing capacity and oil production are increasing first as new wells are put into production,and then decreasing gradually. The water content variation is divided into three types.The study of dynamic characteristics can provide a basis for understanding the development rule of polymer flooding in offshore oilfield and making adjustment timely and effec-tively.