根据常规测井资料评价储层孔隙结构

准确计算储层孔隙结构参数是产能预测的关键。常规连续计算储层孔隙结构参数的方法主要是以核磁资料和毛管资料为基础的,但在没有核磁资料的情况下,这一方法受到限制。通过对实验数据进行研究分析,提出了根据常规测井资料以及毛管压力资料连续计算储层孔隙结构参数的新方法,该方法能在缺少核磁资料的情况下达到连续计算储层孔隙结构参数的目的,弥补了利用常规测井资料计算储层孔隙结构参数的不足。对L油田高孔、高渗储层实际资料处理表明,新方法得到的渗透率、孔喉半径均值、毛管压力中值与岩心分析资料吻合较好,验证了该方法的准确性与广泛适用性。

Evaluate Reservoir Pore Structure Based on Conventional Log Data

Accurate calculation of reservoir pore structure parameters is the key to productivity prediction .The conventional method of calculating reservoir pore structure parameters is mainly based on nuclear magnetic data and capillary pressure data , but this method will be restricted in the case of no nuclear magnetic data. A novel method was presented to calculate reservoir pore structure by combining conventional log data and capillary pressure data through the study and analysis of the experimental data. This method not only can reach the purpose of calculating pore structure parameters consequently under the condition of the lack of nuclear magnetic data, but although makes up for the calculation of reservoir pore structure parameters using conventional logging data. The permeability data, pore throat radius data and the median capillary pressure in high-porosity and high-permeability reservoir of Well A calculated by the method are closed to the results of air permeability, pore throat radius and the median capillary pressure from core analysis, which indicates the accuracy and applicability of this method.