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利用模糊数学评价储集层是一种新的方法。但在使用中发现,如果参数和算子选择得不正确,将得不出任何有意义的结论。本文对几种常用的模糊算子的运算模型作了探讨,比较了各自的功能,有利于人们在实际应用中进行选择。模糊综合评价的参数选择是一个关键的问题,本文以砂岩储集层的评价为例,讨论了参数选择的要求。考虑到以含油饱和度作评价参数,在不同岩性储集层中的差异太大的缺点,设计了产油饱和度指数作为评价参数,并进行了试算,取得较好的效果。
Using fuzzy mathematics to evaluate reservoirs is a new method. However, in use, it is found that if the parameters and operators are not chosen correctly, no meaningful conclusions can be drawn. In this paper, several commonly used fuzzy operator computing models are discussed, comparing their respective functions, is conducive to people in the practical application of choice. The parameter selection of fuzzy comprehensive evaluation is a key issue. In this paper, taking the evaluation of sandstone reservoir as an example, the requirements of parameter selection are discussed. Taking into account the oil saturation as the evaluation parameter, the difference in the reservoir of different lithology is too large. The oil saturation index is designed as the evaluation parameter, and the trial calculation is carried out to obtain good results.