简要介绍了随钻气侵检测仪的结构特点、工作原理、现场模拟试验及应用情况。中原油田全尺寸实验井和胜利油田６口井的现场试验及应用结果表明，该仪器能实现早期气侵检测，比常规方法检测到气侵的时间明显提前，对高压气井和复杂地层井控具有重要的现实意义。 Briefly introduced the structural characteristics, working principle, field simulation test and application of the gas intrusion detection instrument while drilling. Field experiments and application results of 6 wells in Zhongyuan Oilfield full-scale experimental well and Shengli Oilfield show that the instrument can achieve early gas invasion detection, obviously earlier than the conventional method to detect gas invasion, and has the advantages of high pressure well and complex formation well control Important practical significance.