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随着我国石油勘探的不断深化与发展，对复杂油气藏的勘探技术有了很大提高，但是对于一些裂缝性混积岩储层的 复杂油气藏，测井定量评价仍是一个困难的问题。经过多年探索，已研究出一套对这种复杂气藏的测井综合定量评价方法，并得到了大量地质验证。该方法首先是以岩化分析为依据，对测井信息采用模糊聚类分析技术，对岩石多矿物及其含量进行划分。在此基础上，构成多矿物、多岩类、非均质、双重介质的储层物理模型，进一步导出测井计算孔隙度、渗透率、含水饱和度、有效厚度以及测井裂缝参数计算的响应方程 。并通过大量的地质、岩心分析及试油对测井定量结果进行刻度与检验。实践表明，这套测井定量评价方法是成功的,它在青海狮子沟E3^1油气田进行了成功的应用。

Logging Evaluation Technique of Fractured Diamictite Reservoirs

Along with the unceasing deepening and development of petroleum exploration in China,the techniques of prospecting for complex oil and gas reservoirs have been greatly enhanced,however the quantitative logging evaluation for some complex fractured diamictite oil and gas reservoirs is still a difficult problem.Through probing for many years,a set of comprehensive quantitative logging evalution methods of complex oil and gas reservoirs have been developed and examined geologically.In the methods,on the basis of petrochemical analysis,the minerals and their contents in rocks are divided by applying the fuzzy clustering analysis technique for log information,then a physical model of poly-mineral,multiple-rock,heterogeneity and dual-medium is set up,and then the log response equations of calculating porosity,permeability,water saturation,effective thickness and log fracture parameters are derived respectively.By means of the calibration and examination of the quantitative log interpretation results by a great number of the geological,core analysis and oil production test data,it is shown that this set of quantitative logging evaluation methods are suitable and they were successfully applied to E_3 1 oil and gas reservoir in Shizigou field in Qinghai Province.