油(气)田开发方案优选的模糊决策方法

FUZZY DECISION?MAKING TECHNIQUE FOR OPTIMIZATION OF OILFIELD DEVELOPMENT PROGRAM

一个油 (气 )田开发方案含多个技术经济指标 ,各指标值的量纲、单位往往不统一 ,且指标间存在相互依赖和相互矛盾的指标取值 ,这就决定开发方案优选不能以直接比较各指标值或某一指标值的大小来决定方案优劣 ;又开发方案在某一指标下的优劣是相对的 ,无明确界限 ,具模糊性 ;因此 ,合理的开发方案优选 ,就必须综合考虑各指标信息、各指标特性 ,进行综合评价 ,得出方案的优劣。开发方案优选的综合评价方法此前已有学者作过探讨 ,但均存在不足。为此 ,在对已有的油 (气 )田开发方案模糊决策方法研究的基础上 ,充分利用方案的指标信息 ,应用多指标决策技术和模糊集理论 ,提出了一种更合理、更完善且易于操作的油 (气 )田开发方案优选的模糊决策方法 。

Oil and gas field development program includes many technology economic targets, their quantities and units aren't consistent. These technology economic target values are dependent on or contradiction each other sometimes, therefor, we can' t choose the best development program, by direct comparing one or all technology economic target values of development program. And the development program is good or bad on one target is relative, has not definite boundary and is fuzzy. Consequently, it is rational choosing the best development program. We must consider all target information and specific property and proceed comprehensive evaluation. Scholars studied the comprehensive evaluating method of development program optimization before, but these methods were shortage. For this reason, we apply multiple attribute decision theory and fuzzy theory, in this paper, a fuzzy decision? making technique was developed to evaluate an oilfield development program for rational, accurate and operated easily. It based on studding these fuzzy decisions?making techniques of an oilfield development program that existed. The paper presented a successful example.