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影响容积法储量计算精度的因素之一是储层的有效厚度取值。有效储层厚度确定得准确与否，主要与下限标准定得是否合理有密切关系。本文通过对川东地区石炭系储层特征的综合研究，结合测井、测试资料，对石炭系储层下限标准的确定方法进行了归纳分析，提出了浮力－毛细管阻力法及相渗透率－产量法两种新的储层下限确定方法，并对各种方法进行分析，推荐了较好的确定裂缝－孔隙型碳酸盐岩储层下限标准的方法。
One of the factors that affect the accuracy of volumetric method is the effective thickness of reservoir. Effective reservoir thickness to determine the accuracy or not, mainly with the lower limit set reasonable is closely related. Based on the comprehensive study of Carboniferous reservoirs in East Sichuan, combined with well logging and test data, the methods for determining the lower limit of Carboniferous reservoirs are summarized and the methods of buoyancy-capillary resistance and phase permeability-yield Method of determining two lower limit of reservoir and analyzing various methods, and recommending a better method of determining the lower limit of carbonate reservoir of fractured-pore type.