【作者】 李铁柱；

【导师】 申辉林；

【作者基本信息】 中国石油大学 ， 地球探测与信息技术， 2010， 硕士

【摘要】 复杂油藏的勘探开发难度较大,其中对于泌阳凹陷复杂断块油藏的评价难点主要表现在低阻和复杂水系上,因此对于断块油藏中低电阻率油气层的测井评价方法研究是泌阳凹陷复杂断块油藏测井评价方法研究的核心。低电阻率油层作为一个新的研究领域,也是当前国内外测井界所面临的重要难题之一,由此展开了主要针对低电阻率油气层的评价和解释。本文从导电因素出发,对低阻油层成因进行了划分。在概括总结低阻油层成因的基础上,对泌阳凹陷王集油田低阻油层成因进行了分析,并应用均权灰色关联模型进行定量验证。针对不同的低阻类型,采用不同的饱和度解释模型。综合应用无需考虑维数灾难的灰色关联与相关分析方法识别低阻油层,克服了数理统计方法对样本层数量的限制。将这一研究成果应用于泌阳凹陷王集油田,运用蛛网图表示研究区块所有流体类型,利用加权关联模型计算关联度并参考相关系数,依据最大隶属原则对各模式的蛛网图进行识别,进而达到了识别流体类型的目的。对于复杂油水层的综合评价,在纵向上微观识别,横向上宏观预测,即在单层判别结果的基础上,采用地层对比的方法确定研究区块的有利层系。应用上述研究成果对研究区域的部分井段进行处理,取得了较好的应用效果,流体识别精度较高。更多还原

【Abstract】 Exploratory development for complex reservoir is difficult, the main points of evaluation are low resistivity and complex water system, so the research of well logging evaluation for low resistivity oil layer is the core. Low resistivity oil layer is also significant problem for the scientists of home and abroad at present, that is why we should do the research for evaluation and interpretation of low resistivity oil layer.In this paper, I have classified the factors of low resistivity reservoir in electric conduction. Analyse the factors of low resistivity in Wangji Oil Field, and test the factors of low resistivity reservoir in the grey correlation analysis.Utilize different interpretation model of saturation for different kinds of the type of low resistivity reservoir.Identify the low resistivity oil reservoir by the comprehensive method of connecting the grey correlation analysis and correlation analysis in the article.In Wangji Oil Field ,the models of fluid were expressed in web graph,then compute the grey degree in the weighted grey correlation analysis considering correlation analysis, the fluid potential of unknown reservoirs was identified in the light of maxmum subject degree.Identify the oil bed in vertical direction,and forecast the layer system in cross range for the comprehensive evaluation of complex water and oil bed.On the basic of the result of single layer, using the method of geologic correlation to assure the better layer system.In study field, the analysis result by using the above approach shows that the rate of identifying fluid is higher than other methods and generating good impact of application.更多还原