模糊层次评价法在海南3断块的应用

Application of fuzzy hierarchy evaluation method to Hainan 3 fault block

从复杂断块油藏地质特征和油田开发实际出发,确定水驱储量控制程度、水驱储量动用程度、能量保持水平、剩余可采储量采油速度、采收率、即时含水采出比、综合递减率和自然递减率等参数作为注水开发效果综合评价的参数,应用层次分析法与模糊综合评判方法相结合的方式,建立适用于复杂断块注水油藏的开发效果综合评价的评价模型,对海南3断块的开发效果进行综合评价。评价结果表明,该块开发效果符合开发实际。该方法对于同类油藏的开发效果评价具有一定的借鉴意义。

This paper studies geological characteristics and oilfield development practice of Hainan 3 complex fault block reservoir and determines the parameters of evaluation of water flooding result,which include the degree of reserves controlled by water drive,the producing degree of reserves by water drive,energy maintenance level,oil recovery rate of remaining recoverable reserves,recovery factor,instantaneous water cut-recovery percent ratio,composite decline rate and natural decline rate.A model has been established to evaluate the development result of water flooding for Hainan 3 complex fault block reservoir by combining analytical hierarchy process and fuzzy comprehensive evaluation method.The result coincides with the development practice.This is of certain reference significance to the evaluation of development result of similar reservoirs.