碳酸盐岩储层晶间孔、微裂缝发育,非均质性较砂岩储层大,常规孔隙度渗透率建模方法求取的渗透率存在较大误差,渗透率参数的准确求取存在困难.基于声波测井的相关理论及对斯通利波影响因素的分项假设,得到根据储层斯通利波时差、剪切模量及流体信息计算反映储层渗透性的流体移动指数的计算公式,并分层位建立其与储层渗透率的解释模型,实现了对碳酸盐岩储层渗透率参数的定量评价.应用上述方法对实际阵列声波测井资料进行处理解释,解释结果与物性分析资料具有较高的一致性,提高了测井解释评价精度.

针对裂缝性地层渗透率解释模型不适用的情况，通过对克里格方法原理及计算方法的分析，建立了采用克里格多维网格方法计算渗透率的评价方法，并根据实际测井和物性分析资料构建了适用于研究区的样本库，对实际资料进行处理解释及与物性分析资料进行比对分析，证实该方法对于提高裂缝性地层渗透率解释精度效果较好。

Both lithology and pore structure of reservoirs of He-8 section,Shihezi formation in Central Sulige are complex,their permeability changes in wide range,showing strong non-homogeneous characteristics.The upper and lower criterial values of reservoir are difficult to be determined by crossplot of conventional logs.Based on sedimentary facies characteristics of He-8 section,Shihezi formation in Central Sulige,the channel deposit and channel bar deposit sand reservoir,which are the majority in the studied area,are classified into box-shaped and bell-shaped reservoir according to their GR and SP well logging characteristics,then cross plots of acoustic slowness-resistivity and density-resistivity are drawn respectively,and the criterial values for evaluating gas-,gas-bearing-,water-,dry-layer are established for each class.Application effect of the interpretation chart parameters is analyzed,showing that the use of sedimentary facies controlled logging interpretation chart can better identify gas-bearing formation.

Pore structure of Chang4+5 reservoir of Yanchang Formation in Triassic System is so complicated that it causes high irreducible water saturation,and log data shows the reservoir has high porosity and low resistivity in Baibao Oilfield.In order to improve the log interpretation veracity,studied is the genesis of the low resistivity reservoir in this area.Based on various information,such as well logging,core analysis,mercury injection,slices analysis,water analysis and well test,compared are lithology,pore structure,physical property and electric property of the Chang4+5 low resistivity reservoir and the Chang3 normal reservoir.Analyzed are six factors that influence the low resistivity pay zone in Chang4+5 reservoir: mud content,cation exchange capacity,water mineralization,high porosity,granularity and irreducible water saturation.It is considered that the complicated pore structure,high irreducible water saturation,fine granularity of formation and high porosity are the main reason for the zone in Chang4+5 reservoir.The method using NMR data to calculate irreducible water saturation increases the precision of log interpretation.Based on the research conclusion,interpreted is the geologic characteristic of well B154 in Baibao area.The interpretation result is in accordance with the real situation.