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用容积法计算油气储量时，影响储量计算精度的因素之一是储层有效厚度。砂砾岩由于其岩性复杂、非均质性强，岩石骨架对电测曲线的影响较大，加上常规实验室物性分析精度不高，使砂砾岩储层有效厚度划分比较困难。本文根据大庆油田侏罗系、白垩系砂砾岩储层的特征，利用实际资料确定出储层有效厚度下限标准，并结合实例提出利用全直径物性分析资料、气测资料及电测曲线综合确定有效厚度的方法和步骤。
When volumetric method is used to calculate oil and gas reserves, one of the factors affecting the calculation accuracy of reserves is the effective reservoir thickness. Because of its complex lithology and heterogeneity, the influence of rock skeleton on the electrical measurement curve is larger, and the accuracy of physical property analysis in conventional laboratories is not high, making it difficult to classify the effective thickness of glutenite reservoir. Based on the characteristics of the Jurassic and Cretaceous conglomerate reservoirs in Daqing Oilfield, the authors used the actual data to determine the lower limit of effective thickness of reservoirs. Combined with the examples, the authors proposed the use of full-diameter physical analysis data, gas measurement data and electrical measurement curves to determine the effective Methods and steps of thickness.