在裸眼井中,往往由于泥浆滤液侵入地层而影响测量,致使裸眼测井仪漏测一些气层。出现遗漏气层的情况主要有:1.致密地层与气层分不清;2.裸眼井电阻率测井探测不清含气薄砂层;3.泥浆滤液侵入地层很深时,深感应测井不反映气影响而错判为视含水层,但实际上是气层。在遗漏气层中,有一种含气的薄互层状泥质砂 In open-hole wells, muddy filtrates often invade the formation and affect the measurement, leaving open-hole tools to leak some gas layers. There are mainly the following situations: 1. Dense stratum and gas layer can not be distinguished; 2. Open-hole resistivity logging can not detect the gas-bearing thin sand layer; 3. When the mud filtrate intrudes into the deep stratum, Well does not reflect the gas influence and mistaken for the aquifer, but in fact the gas layer. In the omission of gas, there is a gas containing thin interlaminar argillaceous sand