模糊综合评判法确定油藏水驱开发潜力

油藏水驱开发潜力是评价油藏开发开采水平的重要参数。在分析评价经验公式法、水驱特征曲线法和递减曲线法确定油藏水驱开发潜力优缺点的基础上,由影响油藏水驱开发潜力的7类地质因素（岩石颗粒结构、岩石孔隙结构、储集层渗流物性、储集层敏感性、含油气砂体分布、储集层能量及原油物性）中选取矿场易获取的能够反映油藏地质特征的24个地质参数,构成油藏水驱开发潜力评价指标体系,提出了用“模糊综合评判法”确定油藏水驱开发潜力的新方法。实例分析结果表明,“模糊综合评判法”能够较准确地确定油藏水驱开发潜力,它是一种简单、适用、可靠的科学方法,具有广泛的适应性和实用性。

Determing water driving effectiveness of oil reservoir with fuzzy comprehensive evaluation method

The oil recovery under water drive is an important factor for the evaluation of water displacement efficiency of a reservoir. Based on the analysis of advantage and shortage in the oil recovery determination using empire formulas, water displacement curves and decline curves, this paper presents a new "Fuzzy Comprehensive Evaluation Method" which contains 7 types (i. e. rock grain texture, rock pore texture, flow properties of reservoir, reservoir sensitivity, distribution of oil and gas sand bodies, reservoir energy and crude oil properties) of 24 geology factors. The application results showed that the "Fuzzy Comprehensive Evaluation Method" could accurately evaluate the oil recovery for different reservoirs in different production period, and it's a simple, applicable and scientific method that can be used broadly.