用灰色相对变率关联度分析法确定影响油气井产量因素的权重

一个油气藏的生产能力受储集层有效厚度、孔渗性等参数的影响，这要求研究者必须对各影响因素的作用有较为明确的认识，合理地确定各因素的权重。灰色关联度分析理论认为，相对变率是刻划事物发展过程的理想指标，关联度表征了事物在发展过程中的关联程度。如果两个事物在发展过程中，相对变率基本上一致，说明二者有较好的关联度，彼此间的影响或控制较大。用灰色关联度分析理论的相对变率关联度分析法，较好地解决了对研究区实施模糊综合评判时遇到的如何确定因素权重的问题。表３参３（陈志宏摘）

Determining the weight of factors affecting oil and gas productions by grey relative variation correlativity analysis.

Production capacity of an oil gas reservoir is affected by parameters like net pay thickness, porosity and permeability of the reservoir, which means the relevant researchers are required to have a clear understanding to the role of various affecting factors and to reasonably determine the weight of them. The theory of grey correlativity analysis states that relative rate of change is a desirable index to describe the development process of things, while the correlativity characterizes the correlative extent of these things in development process. If the relative variation rates of two things in developing are basically the same, that means these two have a good correlativity, indicting a strong effect or control existing between them. For this, a relative variation correlativity analysis from grey correlativity analysis theory is introduced, which provides a useful settlement to the factor weight determination encountered in the fuzzy evaluation of the study area.