特高含水油藏综合调整效果的模糊评价方法

建立了特高含水开发期油藏综合调整效果评价指标体系,分为注采状态评价指标、开发动态评价指标、经济效益评价指标等3大类,包括井网密度变化率、注采对应率变化值、水驱储量控制程度变化值、含水率评价系数降低值、存水率评价系数降低值、平均年增油程度、采收率增加值、耗水量降低值、产出投入比等9项子指标。基于模糊综合评判原理和层次分析法,提出了综合调整效果的模糊综合评判方法。对胜坨油田“十五”期间12个综合调整单元的调整效果进行了模糊评价,结果表明,该方法能综合反映多方面的调整效果。

Fuzzy evaluation method of reservoir comprehensive adjustment effect in ultra-high water cut stage

Evaluation indexes systems of reservoir comprehensive adjustment effect in ultra-high water cut stage were established,which can be divided into three types including evaluation indexes of injection-production condition,development and economic benefit.These indexes can also be subdivided into nine indexes including variation rate of well spacing density,variation of injection-to-producing-well corresponding ratio,variation of reserve controllable degree of water drive,decrease of evaluation coefficient of water cut,decrease of evaluation coefficient of water storage,average oil increment degree per year,increase of oil recovery efficiency,decrease of water consumption,ratio of output and input.A fuzzy comprehensive evaluation method of reservoir comprehensive adjustment effect was presented on the basis of fuzzy comprehensive evaluation theory and analytical hierarchy process.Fuzzy evaluation of adjustment effect was performed on 12 adjustment units of Shengtuo Oilfield during tenth five-year plan period.It is indicated that the method can comprehensively reflect adjustment performance from many aspects.