基于帧间差分的随钻测井数据压缩算法

摘要

The conventional application of mud transmission rate (about 1 b/s) is unable to meet the demand for real-time uploading of measurement parameters with the rapid development of logging while drilling (LWD) technology, while data compression technology is an effective method to improve the transmission rate. By analyzing the characteristics of the mud pulse signal and the experience of the field application, a data compression algorithm based on frame-to-frame difference is designed and applied in data coding and analytic processing. The practical application results show that the algorithm can effectively improve the transmission rate and save the data's updating time, thus having a high popularize prospect.%随钻测井技术的快速发展导致常规应用的泥浆传输速率(1 b/s左右) 已无法满足测量参数实时上传的需求, 而数据压缩技术是提高传输速率的一个有效手段.通过分析泥浆脉冲编码信号的特点, 结合现场应用经验, 本文设计一种基于帧间差分式的数据压缩算法并将其应用于随钻测井数据编码、解析处理过程中.实际应用效果表明该算法能有效提高传输速率, 节省数据更新时间, 具有较高的推广前景.