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本文介绍了FC_1C38-155型油管放射性测井仪的工作原理、技术性能和现场试验结果。着重叙述了提高井下仪器的门槛温度稳定性的措施和高压点温度补偿的方法以及井下两道信号传输的抗干扰问题。采用这种仪器可在井温为155℃、压强为68.67MP_2的井内通过油管取得自然伽马和接箍资料。
This paper introduces the working principle, technical performance and field test results of the FC_1C38-155 tubing radioactive logging tool. The methods of raising the threshold temperature stability of downhole equipment and the method of compensating the temperature of high pressure point and the anti-interference of two signal transmission in downhole are emphatically described. With this instrument, natural gamma and coupling data can be obtained through the tubing at a well temperature of 155 ° C and a pressure of 68.67 MPa_2.