中圖分類號：TP311.5；P631.81 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.257161 中文引用格式： 李凡，師光輝，朱萬里，等. 隨鉆核磁共振測井儀器數據采集軟件設計與實現[J]. 電子技術應用，2026，52(5)：39-46. 英文引用格式： Li Fan，Shi Guanghui，Zhu Wanli，et al. Design and implementation of data acquisition and processing software for NMR logging[J]. Application of Electronic Technique，2026，52(5)：39-46.
Design and implementation of data acquisition and processing software for NMR logging
Li Fan1，Shi Guanghui2，Zhu Wanli1，Cheng Zhiyong3，Liu Juzhao1
1.Logging Technology Research Institute of China Petroleum Logging Co.，Ltd.；2.College of Computer Science， Xi′an Petroleum University；3.China Shipbuilding Group Co.， Ltd.， No. 710 Research Institute
Abstract： The logging-while-drilling nuclear magnetic resonance (LWD NMR) instrument can provide in-situ formation porosity and permeability measurements unaffected by mud invasion, but it poses severe challenges to adaptability under extreme conditions and system integration and reliability. Currently, the LWD NMR instrument technology is mainly held by foreign energy giants, and domestic LWD NMR instruments are still in the catching-up stage. To improve the development efficiency of LWD NMR logging instruments, simplify the instrument testing steps, and shorten the project cycle, a data acquisition and processing software based on LabVIEW language was designed and implemented according to the characteristics of LWD NMR logging instruments. This software is based on the RS-485 serial interface and a custom logging command transmission and data upload communication protocol, and it realizes basic functions such as LWD NMR sequence parameter configuration, data transmission and reception, data processing and display. Experimental results show that in the actual instrument testing, the nuclear magnetic spin echo signal of the water tank solution can be accurately obtained, the system's response time for sending and receiving data can be completed within 16 milliseconds, and the inverted NMR T2 spectrum is basically consistent with the laboratory measurement.
Key words : NMR logging while drilling；testing software；communication protocol；real-time processing
