过套管地层电阻率测井仪的试制及现场实验

TRIAL-PRODUCTION and Field Test of Cased Hole Resistivity Logging Tool

分析了过套管测量地层电阻率的测井原理、方法以及技术特点,解决了微弱信号检测等关键技术难题,建立了过套管电阻率测井室内刻度实验装置,对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仪的技术评价提供了实验依据。在大庆油田进行了现场测井实验的结果表明,在新完钻且未射孔生产的套管井中,测量的地层电阻率与其裸眼井测井电阻率有着较好的一致性。

The characteristics of the principle,method and technology of the cased hole formation resistivity are introduced in the paper.Weak signal detecting and other key techniques are solved.An indoor calibration apparatus of cased hole resistivity measurement is established.Formation resistivity measurement range and other technology parameters are tested.The experimental evidence for cased hole resistivity logging tool evaluation is provided.Field logging tests were made in Daqing Oilfield.The well logging testing shows that measurements made with the tool are very well matchingwith open hole resistivity in a new cased hole.It provides the basic data for the adjustment and development of Daqing Oilfield.So it has better applications in Daqing oilfield.