CAI Pengfei,ZHANG Bin.Measurement while Drilling-oriented Identification of Mud Pressure Signal Pulse[J].Journal of Chengdu University of Information Technology,2019,(04):380-383.[doi:10.16836/j.cnki.jcuit.2019.04.010]
面向随钻测量的泥浆压力信号脉冲识别研究
- Title:
- Measurement while Drilling-oriented Identification of Mud Pressure Signal Pulse
- 文章编号:
- 2096-1618(2019)04-0380-04
- 分类号:
- TN919
- 文献标志码:
- A
- 摘要:
- 在基于泥浆压力波传输信号的随钻测量系统中,波形受到与信号频段重叠的噪声干扰。 这些干扰无法通过传统的带通滤波消除,严重影响信号脉冲的识别与定位。根据泥浆压力脉 冲的特点,提出一种新的脉冲识别与准确定位的方法,通过滑动的方式检测脉冲波形与基线之 间所包含的面积来确定同步脉冲,可以有效减少带内噪声的影响。实验对一组钻井施工现场 数据进行脉冲识别与解码,结果表明所提方法的误码率是6.1%,明显低于目前业内领先的一款 商业软件的误码率(13.5%)。
- Abstract:
- In mud-based telemetry of measurement while drilling(MWD)systems, the in-band noise cannot be filtered out by traditional band-limited filtering techniques, which will lead to significant degradation of signal pulse shape and severely affect the signal pulse identification and positioning for synchronization. This paper proposes a novel method for mud-pulse identification and positioning. The method determines the synchronization pulse by detecting the area contained between the pulse waveform and the baseline through sliding a window, and it can effectively reduce the influence of in-band noise. Experiments based on decoding of a series of mud pressure waves in real drilling environment show that the proposed method achieved an error rate of 6.1%, significantly lower than that of a leading commercial decoding software(13.5%).
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备注/Memo
收稿日期:2019-03-04 基金项目:四川省教育厅重点资助项目(17ZA0074)