The data transmission efficiency is required as must high as possible in reality because the logging data is large, and its data transmission needs strong real-time property. But anyway, most of oilfields still adopt the direct transmission style for the sample data nowadays. Therefore, an algorithm based on DPCM is proposed for logging data compression. The encoding flowchart was designed according to the characteristics of coding method. The relevant pretreatment of the logging data is conducted, and then the realization of data coding is achieved. Through an experiment, it is found that DPCM-based algorithm can remove the data redundancy effectively. In the case of ensuring that the error between the coding compressed logging data and original logging data is less than 5 %, the compressed logging data volume is as same as half of the original logging data. Therefore, the logging data transmission efficiency is increased by twice.%由于现实中测井数据数据量大,数据传输实时性强,这就要求传输效率要尽可能地高.但是目前大多数油田仍采用直接传输采样数据的方式.因此提出了一种基于DPCM算法的测井数据传输方式.针对编码方式的特点,设计了编码流程图.对测井数据进行了相关的预处理,再进行编码实现.经仿真实验后发现,差值编码能够有效地去除数据之间的冗余,在保证编码压缩后的测井数据与原始测井数据误差不超过5％的情况下,经压缩后的测井数据量为原始测井数据量的1/2,因此测井数据的传输效率提高到了2倍.
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