王家湾长2储层敏感性试验研究

余家坪王家湾长2储层属于典型的中孔-低渗到低孔-特低渗储层。为了减少开发过程中对储层的伤害程度,实验室采用恒压驱替实验对长2储层进行＂五敏＂性评价实验。研究结果表明,王家湾长2储层表现为敏感性较弱,储层无酸敏;速敏性中等偏弱;水敏、盐敏性较弱;碱敏性中等偏弱。实验研究对指导长2储层的开发具有重要的指导价值。

Experimental Study on Sensitiveness of Wangjiawan Chang2 Reservoir

Wangjiawan Chang2 reservoir belongs to the typical medium pore-low permeability and low porosity-super low permeability reservoir in Yujiaping area. In this paper, in order to decrease the damage degree of reservoir in development process, the constant pressure displacement experiment was used to determine ＂five sensitivities＂ of Chang2 reservoir. The results show that Chang2 reservoir has medium to weak velocity sensitivity, weak water sensitivity and salt sensitivity, no acid sensitivity, medium to weak alkali sensitivity. This paper has the important guidance value for Chang2 reservoir development.