过套管电阻率测井模型机模拟井实验研究  

Experiment of Prototype of Cased Hole Resistivity Logging Tool in Indoor Well Model

作　　者：严正国[1] 张家田[1] 包德州 苏娟[1] 吴银川[1] 刘杰 

机构地区：[1]光电油气测井与检测教育部重点实验室,陕西西安710065 [2]中国石油集团测井有限公司技术中心,陕西西安710077

出　　处：《测井技术》2011年第3期215-217,共3页Well Logging Technology

基　　金：中国石油天然气集团公司石油科技创新基金(编号:05E7039);陕西省自然科学创新基金(编号:2007D01)资助

摘　　要：过套管电阻率测井有用信号非常微弱,只有纳伏数量级,微弱信号检测是过套管电阻率测井技术研究的关键技术难题。通过对大电流发射装置、超低噪声前置放大器、高精度信号采集与处理技术的研究,研制出过套管电阻率测井模型机,并建立了过套管电阻率测井室内模拟井实验装置,对模型机仪器的微弱信号测量不确定度、地层电阻率测量范围等技术参数进行了测试,为过套管电阻率测井模型机仪器的技术评价和过套管电阻率测井仪器的研制提供了实验依据。The useful signal of cased hole resitivity logging is extremely weak, usually only reac hing the nV-level. Weak signal detecting is a key technique in cased hole resistivity measurement. By studying on large current equipment launcher, ultra low-noise amplifier, high precision signal acquisition and proceeding technique, a prototype of cased hole formation resistivity logging tool is made, and an indoor experiment well model of cased hole resistivity measurement is estab- lished. Weak signal measurement uncertainty and formation resistivity measurement range are tested. Provided is the experimental evidence for prototype evaluation and cased hole formation resistivity logging tool development.

关 键 词：过套管电阻率测井 地层电阻率 模型机 模拟井 

分 类 号：TE151[石油与天然气工程—油气勘探]