泥浆脉冲随钻测井仪信号传输及处理方法研究

发布时间：2018-04-17 06:33

本文选题：随钻 + 泥浆脉冲　；参考：《东北石油大学》2017年硕士论文

【摘要】：随着石油资源的不断衰减,石油开采工作也变得愈加困难,油井结构越来越复杂,原油开采深度越来越深,开采仪器所需提供的数据越来越多,测井资料的获取越来越不易,如何解决此问题成为相关研究人员关注的热点。在钻井施工中,采用随钻测井技术获取井眼轨迹和该地区地质参数等信息,将获取到的地下信息及时传输给地面分析仪器进行数据信息处理,不仅有利于开采工作的顺利进行,也有利于随钻测井技术的进一步发展。随着各种技术的发展进步,油井井下数据的传输方式由传统有线传输方式向着无线传输方式转变,传输速度由低速传输向着高速传输发展。当前油井井下数据无线传输的模式主要可分为泥浆脉冲数据传输和电磁脉冲数据传输两种模式,其中泥浆脉冲数据传输中的脉冲信号可以分为正脉冲信号、负脉冲信号和连续波脉冲信号,现阶段油井井下数据无线传输信号多采用泥浆作为传输介质,泥浆脉冲信号数据传输将井下信息以泥浆脉冲的形式传输到地面上,再利用地面传感器将获取的泥浆脉冲信号进行必要的预处理,转换为处理器能够识别的信号并通过显示器进行显示,以方便现场工作人员进行下一步的处理操作。本文对泥浆脉冲随钻测井仪信号传输及其处理方法进行研究,以MC68HC711系列单片机作为核心处理器,设计能够满足实际施工要求的泥浆脉冲器的控制电路;利用曼特斯特解码方法实现对泥浆脉冲信号的分析与提取;选择FIR数字滤波器对脉冲信号进行滤波;目的都是在实际施工过程中有效提高地面仪器信号检测的准确性与可靠性。
[Abstract]:With the continuous decline of petroleum resources, oil extraction becomes more and more difficult, the structure of oil wells is more and more complex, the depth of crude oil production is getting deeper and deeper, more and more data need to be provided by exploitation tools, and the acquisition of logging data is becoming more and more difficult.How to solve this problem has become the focus of attention of relevant researchers.In drilling operation, using logging while drilling technology to obtain well trajectory and geological parameters in this area, the obtained underground information is transmitted to the surface analysis instrument in time for data processing, which is not only conducive to the smooth progress of mining work.It is also beneficial to the further development of logging technology while drilling.With the development of various technologies, the transmission mode of downhole data in oil wells has changed from traditional wired transmission to wireless transmission, and the transmission speed has changed from low speed transmission to high speed transmission.At present, the mode of wireless transmission of downhole data in oil wells can be divided into two modes: mud pulse data transmission and electromagnetic pulse data transmission, in which the pulse signal in mud pulse data transmission can be divided into positive pulse signal.Negative pulse signal and continuous wave pulse signal, at present, mud is used as transmission medium for wireless transmission of downhole data in oil wells. Mud pulse signal data transmission transfers downhole information to the ground in the form of mud pulse.Then ground sensor is used to preprocess the obtained mud pulse signal and convert it into a signal which the processor can recognize and display through the display, so as to facilitate the field workers to handle the next step.In this paper, the signal transmission and processing method of mud pulse while drilling logging tool are studied. The control circuit of mud pulse device which can meet the practical construction requirements is designed with MC68HC711 series single chip microcomputer as the core processor.The mud pulse signal is analyzed and extracted by Mantester decoding method; the FIR digital filter is selected to filter the pulse signal; the purpose is to improve the accuracy and reliability of the ground instrument signal detection effectively in the actual construction process.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE927

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