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双侧向测并仪(1225)可以同时测量深、浅两条电阻率曲线。它可以与1308自然伽玛测井仪、3104微侧向测井仪和3502脉冲编码调制(PCM)发送器组合进行测井,同时还可以记录一条自然电位曲线。1225双侧向测井仪的电极系是一个装有9个电极的玻璃钢芯棒。中间的1号电极是主电极,通过它向地层发射主电流 I_0。2号和3号电极是监视电极。仪器工作时,2号和3号电极之间的电位差应该为0。这样,主电极发出的电流成片状垂直进入地层。如果2号和3号电极之间的电位差不等于0,说明泥浆中
Bilateral lateral measuring instrument (1225) can measure deep and shallow two resistivity curves at the same time. It can log well with 1308 Gamma, 3104 Micro-Lateral Logger, and 3502 Pulse Code Modulation (PCM) transmitters, as well as record a natural potential curve. The electrode system of the 1225 dual-lateral tool is a glass-reinforced steel mandrel with nine electrodes. The No. 1 electrode in the middle is the main electrode, through which the main current I_0 is emitted to the formation. The No. 2 and No. 3 electrodes are monitoring electrodes. When working on the instrument, the potential difference between No. 2 and No. 3 electrodes should be zero. In this way, the main electrode of the current into a sheet into the vertical formation. If the potential difference between No. 2 and No. 3 electrodes is not equal to 0, it indicates that the mud is in the mud