声波测井仪器井下数据文件系统设计  

Design of Downhole Data File System of Acoustic Logging Tools

作　　者：付绍凯 卢俊强[1,2] 鞠晓东 陈光建[3] 门百永 FU Shaokai;LU Junqiang;JU Xiaodong;CHEN Guangjian;MEN Baiyong(State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing 102249,China;Key Laboratory of Earth Prospecting and Information Technology,Beijing 102249,China;Production Logging Center,China Petroleum Logging CO.LTD.,Renqiu,Hebei 062552,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]北京市地球探测与信息技术重点实验室,北京102249 [3]中国石油集团测井有限公司生产测井中心,河北任丘062552

出　　处：《测井技术》2019年第5期457-463,共7页Well Logging Technology

基　　金：国家科技重大专项(2017ZX05019006、2017ZX05019001);国家自然科学基金项目(11734017、11374371);中国石油大学(北京)基金(2462016YJRC020)联合资助

摘　　要：为解决声波测井仪器中井下数据存储管理问题,在对NAND Flash存储器特点和嵌入式文件系统进行研究的基础上,设计了一款适用于声波测井仪器的井下数据文件管理系统。介绍所设计的井下存储控制电路,提出井下数据文件系统分层实现的软件结构思路,介绍了文件系统的实现过程:包括FatFS文件系统的移植和闪存转换层(FTL)的实现过程,说明了底层驱动层的实现和应用层的开发。对该文件系统进行了性能和应用测试,测试结果表明,该系统能够实现对测井数据的文件式管理,满足目前声波测井井下存储的需求。该设计的实现不仅提出了一种井下数据存储管理的有效解决方案,有利于声波测井仪器进一步升级和改造,而且对其他嵌入式文件系统开发也具有一定参考价值。A downhole data file management system suitable for acoustic logging tools is designed to improve downhole data storage and management based on the characteristics of NAND Flash memory and embedded file system.Firstly,this paper introduces the design of the downhole storage control circuit,and puts forward the idea of software structure for hierarchical implementation of the downhole data file system by focusing on the implementation process of the file system.It includes the transplantation of a FatFS file system and the implementation process of a Flash Transfer Layer(FTL).Then it describes the implementation of the underlying driver layer and the development of the application layer.Performance and application tests indicates that the system can realize the file management of logging data and meet the current needs of downhole storage of acoustic logging data.This design not only proposes an effective solution to downhole data storage and management,which is conducive to further upgrading and improvement of acoustic logging tools,but also is a reference to the development of other embedded file systems.

关 键 词：声波测井仪器 NAND Flash 文件系统 FATFS 闪存转换层 

分 类 号：P631.83[天文地球—地质矿产勘探] TP274[天文地球—地质学]