过钻具存储式感应测井仪的设计与研究

Design of Through-pipe Memorized Induction Logging Instrument

文章对过钻具存储式测井技术的出现做了简单的概述,提出了研制过钻具存储式感应测井仪的重要性,重点介绍了过钻具存储式感应仪器的功能和实现方法。该仪器设计了一种新型的线圈系结构;发射电路采用三频率混频调谐发射电路,最大限度地降低了仪器功耗,满足了供电电池的小功率要求;电子线路采用硬件电路软件化和高度集成化的方式,具有集成度高、可靠性高、软件算法先进等优点。过钻具存储式感应测井仪增强了过钻具存储式仪器的测井能力,丰富了获取地层评价信息的技术手段。

In this paper, we briefly described the through-pipe memorized logging technology, and then emphatically introduced the function and the realization method of the instrument. We designed a new type of structure of coil system for the instrument, and adopted frequency mixing tunable emission circuit for the emission circuit, which mostly reduced the instrument power, so that the instrument could meet the small power supply requirement. The hardware circuits were replaced by software and highly integrated with electronic circuits, which had the advantages of high integration, high reliability and advanced software algorithms, etc. The through-pipe memorized induction instrument enhaneed the capacity of through-pipe memorized logging instrument, and enriched the technology means of getting formation information.