Petroleum Science >2009,??Issue 3:??239-245 DOI: https://doi.org/10.1007/s12182-009-0038-4
A time-driven transmission method for well logging networks Open?Access
文章信息
作者：Wu Ruiqing, Chen Wei, Chen Tianqi and Li Qun
作者單位：
投稿時間：23 July 2009
引用方式：Wu, R., Chen, W., Chen, T. et al. A time-driven transmission method for well logging networks. Pet. Sci. 6, 239–245 (2009). https://doi.org/10.1007/s12182-009-0038-4
文章摘要
Long delays and poor real-time transmission are disadvantageous to well logging networks consisting of multiple subnets. In this paper, we proposed a time-driven transmission method (TDTM) to improve the efficiency and precision of logging networks. Using TDTM, we obtained well logging curves by fusing the depth acquired on the surface, and the data acquired in downhole instruments based on the synchronization timestamp. For the TDTM, the precision of time synchronization and the data fusion algorithm were two main factors influencing system errors. A piecewise fractal interpolation was proposed to fast fuse data in each interval of the logging curves. Intervals with similar characteristics in curves were extracted based on the change in the histogram of the interval. The TDTM is evaluated with a sonic curve, as an example. Experimental results showed that the fused data had little error, and the TDTM was effective and suitable for the logging networks.
關鍵詞
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Data fusion; fractal interpolation; histogram; packet switch; timestamp