文章介绍了国产近钻头井斜伽玛仪器的工作原理、结构和特点。通过详细介绍近钻头仪器在洲33-30H1井的试验情况,进一步明确了该仪器的优缺点及在使用过程中的注意事项。现场应用试验结果表明,该仪器设计独特合理、工作基本可靠,可以接近于实时获得井底井斜和伽玛数据,但测量精度需要进一步提高。 This paper introduces the working principle, structure and characteristics of domestic near-bithole deviation gamma instrument. Through the detailed introduction of the near-bit instrument in Chau 33-30H1 well test situation, to further clarify the advantages and disadvantages of the instrument and precautions in the use of the process. The field application test results show that the design of the instrument is unique and reasonable, and its work is basically reliable. It can be close to obtaining wellbore deviation and gamma data in real time, but the measurement accuracy needs to be further improved.