网状裂缝型储层具有良好的油气储集能力且广泛存在。双侧向测井能够有效地识别裂缝。采用三维有限元素法对水平井网状裂缝型储层的双侧向响应进行数值模拟，并重点对网状裂缝中流体电阻率、基岩电阻率及裂缝倾角等因素变化所引起的响应特性进行了研究。数值结果分析表明，随着裂缝中流体电阻率增加，视电阻率值相应增加，但增加幅度不大；随着基岩电阻率的增加，视电阻也会随着增加，当基岩电阻率较小时，基岩电阻率的影响会降低；两组裂缝为低角度裂缝时，形成的网状裂缝对电流的阻碍能力较强。所得结论可为水平井网状裂缝型储层测井评价提供理论参考。%The widespread net⁃shaped fracture reservoirs have good reservoir capacity. The dual laterolog can recognize fractures effec⁃tively. The dual laterolog logging response within the net-shaped fracture reservoir was simulated through the 3⁃D finite element meth⁃od, with emphasis placed on the influence of logging response such as fluid resistivity, bedrock resistivity and fracture dip. The results show that the apparent resistivity increases with the increasing fluid resistivity in the fracture, but the rate is pretty small. The apparent resistivity increases with the increasing bedrock resistivity, but this kind of influence will decrease when the bedrock resistivity is very small. The net-shaped fractures formed by the low angle fractures often hinder current strongly. The conclusions above can provide the⁃oretical reference for the horizontal well bore logging evaluation with the net-shaped fracture reservoir.
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