This paper summarizes more than 100 times of field applications of FEWD, and concludes that sensor sub of EWR resistivity, DGR gamma sensor, upper box and bottom box of HCIM sub are likely to break down, and the reasons are discussed.

• 统计分析了FEWD测量仪器100多井次的现场应用情况,认为EWR电阻率传感器短节、DGR自然伽马传感器、HCIM短节上部母扣和DGR短节下部母扣易损坏,并对其原因进行了探讨。