测井仪器耐高温性能优化方法试验研究

Experimental Study on Optimization Method of High Temperature Resistance of Logging Tools

为了解决测井仪器的耐高温问题,更好地获取大深度石油矿井和高温矿井的地质信息,利用试验仿真模拟方法,对传统自然伽马能谱测量仪器进行优化,使其在150℃、140MPa的高温、高压环境下仍能正常工作。通过测量经过隔热涂层、变储能设计的自然伽马能谱测量仪器腔管内的温度变化表明:经隔热、吸热技术处理后,可以提高石油矿井测量仪器的耐高温性,实现了在150℃环境下3.5±1.5h的正常测量时序工作,并保持测量仪器腔管内温度≤150℃。

In order to solve the problem of high temperature resistance of logging tools,the geological information of deep oil and high temperature wells was obtained.By using the experimental simulation method,the traditional natural gamma ray spectrum measuring instrument was optimized,thus it could be normally operated at 150℃and 140 MPa.The temperature changes in the cavity tube of a natural gamma ray spectrometer designed by thermal insulation coating and variable storage energy is detected,the results show that after it is treated by heat insulation,endothermic heat technology,it can improve the high temperature resistance of the oil well measuring instrument,realize the normal measuring time sequence of 3.5 ±1.5 hat 150 ℃,and keep the temperature in the chamber of the measuring instrument≤ 150 ℃.