孤岛油田聚合物驱见聚特征及影响因素

Polymer Breakthrough Characteristics and Its Influence Factors of Polymer Displacement in Gudao Oilfield

孤岛油田聚合物驱试验取得了明显的降水增油效果。注聚区内油井单井见效、见聚特点不同,按单井含水的变化划分为5种类型:见效低谷型、见效初期型、见效波动型、回返型、不见效型;每种类型的影响因素不同,主要影响因素是储层参数、剩余油饱和度、注采关系等。

The obvious water precipitation reduction and oil increase are achieved in polymer displacement in Gudao Oilfield. In the polymer flooding area, the characteristics of single well response and polymer breakthrough are different, the wells are divided into 5 categories according to the water cut changes in a single well, where the influence factor of each category is different, the major influence factors are the reservoir parameters, residual oil saturation and the correlation of injection and production, etc.