模糊综合评判法在低阻油气层中的应用

APPLICATIONS OF THE FUZZY COMPREHENSIVE EVALUATION TO THE LOWRESISTIVITY OILGAS RESERVOIRS

常规的测井方法不能有效地反映低含油饱和度、低电阻率的油气层。本文根据五里湾地区长６油层组出现的低阻油层的测井响应特征，结合地质和测试资料，采用模糊综合评判方法来研究和识别此类油气层，具有较高的标准化、自动化和速度，计算工作量小。依此方法编制了相应的处理软件，处理了一些原来被解释为水层的井段而实质为低阻含油的井段，取得了明显的地质效果。

Conventional well logging methods can not detect low oilbearing saturation and lowresistivity oilgas reservoirs effectively. Based on the response features of logs from the lowresisitivity oilgas reservoirs in the Wuliwan, and combining geological and testing information, the authors propose to use the fuzzy comprehensive evaluation in our investigation and identification of this kind of oilgas reservoirs. And the software is develolped according to the method. It has been used in processing some lowresistivity, oil and gasbearing intevals which were thought to be waterbearing in Wuliwan and the obvious results have been achieved.