润湿性反转剂在低渗透和底水油藏中的应用

Application of wettability reversal agent in low permeability
and bottom water oil reservoir

任向海 刘波 李扬帆

长江大学石油工程学院，湖北 荆州 434023

School of Petroleum Engineering, Yangtze University, Jingzhou 434023, China

低渗透油藏和底水油藏的开发难度大，有很多技术问题亟待解决。低渗透油藏在开发过程中需要很大的注入压力，造成驱替液注入困难，而且油藏压力难以保持平衡；底水油藏极易产生底水锥进，见水后如不及时采取有效的控水措施，油井就有可能被水淹而导致油产量大幅度下降。润湿性反转剂可作为一种新型的堵水剂应用于低渗透油藏和底水油藏的开发，通过实验和数值模拟2个方面来证实特定润湿性反转剂应用于低渗透油藏和底水油藏的开发过程时，能实现降水增油和提高最终采收率的目的。

The development of low permeability and bottom water oil reservoirs has many difficulties and some technical problems press  for solution. Exploiting such reservoir needs a high injection pressure, and the reservoir pressure can hardly keep a balance. The  bottom water oil reservoir is very easy to lead to the bottom water coning. After the water breakthrough, the effective measures must be  taken. If not, the oil production will decrease and the water cut will increase. Wettability reversal agent can be taken as a new water
blocking agent, which can be used to the development of low permeability and bottom water oil reservoir. This paper proves its  application effect through the experimental method and numerical simulation method. The goal of decreasing water cut, increasing oil  production and improving oil recovery has been achieved.