基于钻井液的随钻声波数据传输技术
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TP29 TE927 TH89

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国家重点研发计划(2016YFC0302800)、中央高校基本科研业务费专项(15CX08014A)资助


Acoustic data transmission technology while drilling based on drilling fluid
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    摘要:

    随着各种先进钻井技术的发展,需要实时传输到地面系统的井下数据越来越多,而现有的随钻数据传输技术传输速率较低,无法满足实际钻井需求。尝试将成熟的水声通信技术应用于随钻数据传输,建立了随钻数据声波传输的理论模型,分析了管道声波长距离传输的条件、声波频率对声波衰减的影响;利用有限元软件对随钻声波数据传输系统进行了仿真,在井深2 000 m,声波频率1、4、8 kHz,钻井液粘度20 mPa·s等条件下,声波衰减的仿真结果和理论分析的最大相对误差小于85%,验证了理论模型的正确性;分析了钻杆变径、弯曲等现象对声波传输的影响;最后通过实验测试,进一步验证了声波数据传输方式的技术潜力,为该技术的实用化奠定了基础。

    Abstract:

    With the development of advanced drilling technologies, more and more downhole data need to be transmitted to groundsurface in real time, however the transmission rate of existing logging while drilling (LWD) data transmission techniqueis too low to meet the requirement of actual drilling technology.This paper tries to apply the mature underwater acoustic communication technology to the LWD data transmission. The theoretical model of LWD data acoustic transmission was established, the influence of pipeline acoustic signal long transmission condition andacoustic frequencyon acoustic signal attenuation was analyzed. Finite element software COMSOL was used to simulate the logging while drilling acoustic data transmission system.Under the conditions of well depth of 2 000 m, acoustic frequency of 1, 4 and 8 kHz,and drilling fluid viscosity of 20 mPa·s, the influence of acoustic frequency on acoustic attenuation was simulated. The maximum relative error of simulation result and theoretical analysis is less than 85%, which verifies thecorrectness of the theoretical model. The influence of the drilling pipe diameter changing and bending on the acoustic transmission was analyzed. Finally, the experiment test was carried out, which demonstrates the technical potential of acoustic data transmission method in drilling process, and lays a foundation for the practical application of this technology.

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冯其涛,耿艳峰,郑重,周一鸣,李芳.基于钻井液的随钻声波数据传输技术[J].仪器仪表学报,2019,40(3):106-113

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  • 在线发布日期: 2022-01-14
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