随钻声波测井井下算法测试系统数据交换接口设计  

Design of A Data Exchange Interface for Downhole Algorithm Testing System in Acoustic Logging While Drilling

作　　者：王伟[1,2] 郝小龙[1,2] 周静 杨诚[1,2] 高国寅 WANG Wei;HAO Xiaolong;ZHOU Jing;YANG Cheng;GAO Guoyin(College of Electronic Engineering,Xi’an Shiyou University,Xi’an,Shaanxi 710065,China;Downhole Measurement and Control Research Department,National Engineering Laboratory of Petroleum Drilling Technology,Xi’an,Shaanxi 710065,China)

机构地区：[1]西安石油大学电子工程学院,陕西西安710065 [2]西安石油大学油气钻井技术国家工程实验室井下测控研究室,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2023年第6期118-123,132,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金(41904112),陕西省自然科学基础研究计划(2019JQ-812),陕西省教育厅专项科研计划项目(22JK0506),西安石油大学研究生创新与实践能力培养项目(YCS21221020)。

摘　　要：对数据进行井下实时处理能够更好地发挥随钻声波测井在地质导向钻井中的作用。设计井下算法测试系统有助于井下处理算法的高效开发。本文初步构建了一种井下算法测试系统,设计了前端机中SRAM与上位机之间的数据交换接口。硬件方面,前端机以FPGA为控制核心,它与上位机通过USB微控制器连接。软件方面,USB微控制器固件、FPGA和上位机控制软件共同实现了数据交换协议。测试表明,该数据交换接口能够实现测井数据的格式转换和双向传输功能,上传和下传速度分别可以达到34.78 MB/s和43.04 MB/s。本设计有助于完善声波测井井下算法测试系统,为井下处理算法开发和系统升级提供参考。Real-time data processing in downhole tool can make the acoustic logging while drilling more effective in geological steering.Constructing a test system contributes to the development of downhole processing algorithms.In this paper,a data-exchange interface between a SRAM in the front-end machine and the host computer was designed for the downhole algorithm testing system.In terms of hardware,a FPGA was taken as the control center of the front-end machine,and it was connected to the host computer through a USB microcontroller.In terms of software,a firmware in the USB microcontroller and the control softwares for the FPGA and the host computer were developed to realize the data-exchange protocol.The test results show that the data-exchange interface can realize the format conversion and bidirectional transmission of logging data.The upload and download speed can reach 34.78 MB/s and 43.04 MB/s respectively.This study can improve the downhole algorithm testing system and would be of great help in developing downhole algorithms and upgrading the tools in acoustic logging while drilling.

关 键 词：随钻声波测井 井下处理 数据交换 FPGA USB传输 

分 类 号：TE927[石油与天然气工程—石油机械设备] P631.81[天文地球—地质矿产勘探]