姬塬油田侏罗系油藏早期见水堵水调剖技术研究

Research on plugging water and profile control technology of Jurassic reservoir of early water breakthrough in Jiyuan Oilfield

针对姬塬油田侏罗系油藏开发过程中孔隙性见水的特点,对不同调剖剂进行了室内适应性及现场实验评价,设计优选了预交联颗粒加缔合聚合物弱凝胶为主的复合深部调剖体系.预交联颗粒发挥深部调剖作用,有效封堵大的孔喉通道;缔合聚合物弱凝胶为辅,使其发挥封堵和驱油作用.现场应用表明该体系具有很好的堵水调剖效果,能满足姬塬油田侏罗系油藏堵水调剖的需要.

For the porous water breakthrough of the Jurassic reservoir in the process of development,and the adaptability of different profile control agents is evaluated in laboratory,a deep composite profile control system is selected out.In the system,the pre-crosslinked particle plays the part of deep profile control,it can effectively plug up the big pore channels;associating polymer weak gel acts the part of plugging and oil displacement.The on-site application of this system shows that the system has a good effect of water plugging and profile control,and it can meet the need of water plugging and profile control for the Jurassic reservoir in Jiyuan Oilfield.