致密砂岩油气藏水敏性评价新方法研究——以辽河油田西部凹陷双台子地区为例

New Research on the Evaluation Method of Tight Sandstone Reservoir Water Sensitivity——Taking Shuangtaizi Depression in the West of Liaohe Oilfield as an Example

辽河西部凹陷双台子地区的储层物性差,属于低-特低孔隙度、特低-超低渗储层,黏土矿物含量高,对这种特低渗区块进行注水开发时,储层保护措施很关键。但是,传统的敏感性流动试验方法已经不适合对致密砂岩油气藏进行评价,因此研究了用于评价储层水敏性的比表面积法和阳膨法,并依据此方法判定出双台子地区的储层具有中等偏强-强的水敏性,现场开发时需要采取防膨措施。

The reservoir in Shuangtaizi area in the western depression of Liaohe Oilfield belongs to low to ultra low porosity, low permeability and extra low permeability reservoir and high content of clay mineral,when waterflood development was applied to the extra low permeability reservoirs,reservoir protection measures were crucial.But the traditional test method of sensitivity flow was not the appropriate evaluation method to the tight sandstone oil and gas reservoirs,thus the surface area method and the positive inflation method were applied to evaluate the water sensitive of reservoir.And on the basis of the new method to determine the water sensitivity the reservoir of the area in Shuangtaizi was medium to strong,therefore site development needed to take anti-inflation measures.