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德莱赛—阿特拉斯公司生产的3700数控测井仪是以计算机为核心的现场测井设备。它的声波测井系统是由计算机控制声波发射和接收,由软件自动地根据测井速率调整声波的重复频率。井下声波信号在地面接口中进行快速全波列采样后也由软件进行数据处理、计算和校正。本文分析了3700声波时差测井的硬件和软件,硬件部分概述了井下仪器、地面接口和计算机的选择通道;软件部分分析了声波驱动程序和声波首波检测程序。
Dresser - Atlas company’s 3700 CNC logging tool is a computer-based field logging equipment. Its acoustic logging system is computer-controlled acoustic emission and reception, the software automatically adjusts the acoustic wave repetition rate based on the logging rate. Downhole acoustic signals in the ground interface for fast full-wave column sampling software by the data processing, calculation and correction. This paper analyzes the hardware and software of the 3700 sonic time-lapse logging, and the hardware section outlines the selection of downhole instruments, ground interfaces and computers; the software section analyzes the sonic driver and the first wave detection program.