地热深孔声波测井传感器的热设计  

Thermal Design of Ultrasonic Logging Sensor for Deep Geothermal Wells

作　　者：张建伟[1] 杨卓静[1] 王新杰[1] 赵玉军[1] 郝文杰[1] ZHANG Jian-wei;YANG Zhuo-jing;WANG Xin-jie;ZHAO Yu-jun;HAO Wen-jie(Center for Hydrogeology and Environmental Geology,China Geological Survey,Geological Environment Monitoring Engineering Technology Innovation Center of the Ministry of Natural Resources,Baoding 071051,China)

机构地区：[1]中国地质调查局水文地质环境地质调查中心,自然资源部地质环境监测工程技术创新中心,保定071051

出　　处：《科学技术与工程》2023年第1期165-172,共8页Science Technology and Engineering

基　　金：国家重点研发计划(2019YFB1504103);中国地质调查项目(DD20211336&DD20221680)。

摘　　要：声波测井技术是摸清地下岩体构造及裂缝分布规律的有效手段。在深部热储层测井工程中,井下传感器需要在高温环境中长时间连续工作。高温环境容易使传感器产生热失效,失效率和温度增量呈指数关系。合理的热设计是提升传感器耐高温性能的有效手段,针对超声成像传感器在高温、密闭工作环境中的耐温需求,对数据采集与处理电路进行热设计,给出了传感器内部元件的设计方法。根据传热学理论,建立了电路板的传热耦合模型,采用COMSOL软件对电路进行仿真热分析,为传感器的结构设计、电路布局和耐温性能评估提供了可靠依据。在雄安新区D35井、D22井中进行性能测试,经热设计后的传感器能够在120℃环境下长时间正常工作,高温高压环境下测井效果良好,耐温指标与室内模拟结果一致。试验结果表明,提出的热设计方法能够有效提升传感器的耐温性能,传热模型能够高效仿真实际环境,可广泛应用于热辐射条件下传感器的耐温设计。Acoustic wave logging technology is an effective means to find out the underground rock mass structure and crack distribution law.In the logging engineering of deep thermal reservoir,the sensor needs to work continuously in a high temperature environment.High temperature factors are the main cause of sensor failure,and the relationship between the probability of sensor failure and the temperature increase is an exponential trend.Reasonable thermal design is an effective means to improve the high temperature resistance of the sensor.The data acquisition and processing circuit of the ultrasonic imaging sensor was designed according to the actual application environment,and the design method of the sensor internal elements was proposed.According to the heat transfer theory,the heat transfer coupling model of the circuit board was established,and COMSOL software was used to simulate the thermal analysis of the circuit,which provides a reliable basis for the structural design,circuit layout and temperature resistance evaluation of the sensor.Sensor performance tests were conducted in well D35 and well D22 which located in the Xiongan New Area.The experimental results show that the proposed thermal design method can effectively improve the temperature resistance of the sensor,and the heat transfer model can effectively simulate the actual environment,which can be widely used in the temperature resistance design of the sensor under thermal radiation conditions.

关 键 词：地热 声波测井 传感器 热设计 COMSOL 

分 类 号：TE242[石油与天然气工程—油气井工程]