新站油田注水压力上限确定方法的探讨

Research on Upper Injection Pressure Limit Determination in Xinzhan Oilfield

新站油田低渗透、非均质性严重,天然裂缝发育,注水开发油井见水后含水上升快、产量递减快,多方向见水,治理难度大。实践表明,以无源微地震测试结果为基础的拟泊松比法确定的注水压力上限能够较好地适应油田开发的需要。

Xinzhan oilfield is a low-permeable oilfield,with strong heterogeneity and natural fractures developed.Since the water breakthrough appeared in water flooding,rapid water cut rise,rapid production decline and water breakthrough in multi-direction occurred.Practices have proved that the upper injection pressure limit,determined with pseudopaisson's ratio method,based on passive microseismogram is suitable for oilfield development.