智能钻柱电缆的非均匀传输线阻抗模型建立及仿真研究
发布时间：2018-09-17 09:09
【摘要】：在地质导向钻井、定向井、水平井、智能井等新技术的推动下石油工业迈入自动化、信息化、智能化阶段,需要采集并记录的钻井动态参数越来越多。传统泥浆脉冲等无线随钻信息传输方式,暴露出数据传输速率低、时延长、只能单工通信等缺点,已使其不能满足大量随钻参数实时快速的传输要求。面临石油钻井信息通信技术提出的新挑战,智能钻柱在实现从地面提供动力电能到井下的同时,也具备了井下与地面之间的随钻测控信息的双向闭环传输通道,且保证了实时性,为实现零时差的高速有线信息传输提供了可能。由于电缆传输线在长距离信息传输方面的优势较为明显,适合于传输钻井过程中的各种随钻测量信号,因此,在智能钻井发展方面,电缆传输线的信息传输方式研究将成为智能钻柱的重点。 本文在非均匀传输线理论的基础上,以智能钻柱电缆非均匀传输线电力、信息“二合一”为起点,结合智能钻柱的结构及电力传输线特性,分析了智能钻柱电缆非均匀传输线传输特性的影响因子,对智能钻柱非均匀传输线的信道模型进行研究。 本文根据非均匀传输线的场路特性及分布参数模型,分析了智能钻杆和钻杆接头处的电气特性参数,考虑温度变化对智能钻柱电缆阻抗的影响,得出非均匀传输线的传递函数和传输矩阵,建立了智能钻柱电缆的非均匀传输线阻抗模型。利用MATLAB/Simulink仿真软件搭建完整的通信系统,对智能钻柱电缆的非均匀传输线阻抗模型进行仿真,分析结果,探究信号传输速率、传输距离,以及选取调制解调方式对数据传输质量的影响。 本论文完成了智能钻柱电缆的非均匀传输线信道传输特性的分析,建立了智能钻柱电缆的非均匀传输线阻抗模型,并搭建通信模型对其进行仿真,分析了不同参数条件下的通信性能,为智能钻柱信息传输方式研究提供一定的参考。
[Abstract]:Driven by new technologies such as geological guided drilling, directional well, horizontal well, intelligent well and so on, the petroleum industry has entered the stage of automation, information and intelligence, and more drilling dynamic parameters need to be collected and recorded. The traditional wireless while drilling information transmission method, such as mud pulse, exposes the shortcomings of low data transmission rate, prolonged time, and only simplex communication, which makes it unable to meet the requirements of real-time and fast transmission of a large number of parameters while drilling. Facing the new challenge of petroleum drilling information and communication technology, the intelligent drill string not only provides power from the ground to the underground, but also has a two-way closed-loop transmission channel between the underground and the ground for the measurement and control information while drilling. And the real-time is guaranteed, which provides the possibility for realizing zero-time difference high-speed wired information transmission. Because cable transmission line has obvious advantages in long distance information transmission, it is suitable for transmitting all kinds of measurement signals while drilling. Therefore, in the development of intelligent drilling, The research on the transmission mode of cable transmission line will become the focus of intelligent drill string. On the basis of the theory of non-uniform transmission line, this paper takes the "two-in-one" information as the starting point, combining the structure of the intelligent drill string and the characteristics of the power transmission line, taking the inhomogeneous transmission line of the intelligent drill string cable as the starting point. The influence factors of transmission characteristics of inhomogeneous transmission line of intelligent drill string cable are analyzed, and the channel model of inhomogeneous transmission line of intelligent drill string cable is studied. Based on the field characteristic and distribution parameter model of the non-uniform transmission line, the electrical characteristic parameters of the intelligent drill pipe and the drill pipe joint are analyzed in this paper. The influence of the temperature change on the impedance of the intelligent drill string cable is considered. The transfer function and transmission matrix of the inhomogeneous transmission line are obtained, and the impedance model of the inhomogeneous transmission line of the intelligent drill string cable is established. A complete communication system is built by using MATLAB/Simulink simulation software. The non-uniform transmission line impedance model of intelligent drill string cable is simulated, the results are analyzed, and the signal transmission rate and transmission distance are explored. The effect of modulation and demodulation on the quality of data transmission is also discussed. In this paper, the transmission characteristics of the inhomogeneous transmission line of the intelligent drill string cable are analyzed, and the non-uniform transmission line impedance model of the intelligent drill string cable is established, and the communication model is built to simulate the transmission line. The communication performance under different parameters is analyzed, which provides a certain reference for the research of intelligent drill string information transmission.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE928
本文编号：2245391
[Abstract]:Driven by new technologies such as geological guided drilling, directional well, horizontal well, intelligent well and so on, the petroleum industry has entered the stage of automation, information and intelligence, and more drilling dynamic parameters need to be collected and recorded. The traditional wireless while drilling information transmission method, such as mud pulse, exposes the shortcomings of low data transmission rate, prolonged time, and only simplex communication, which makes it unable to meet the requirements of real-time and fast transmission of a large number of parameters while drilling. Facing the new challenge of petroleum drilling information and communication technology, the intelligent drill string not only provides power from the ground to the underground, but also has a two-way closed-loop transmission channel between the underground and the ground for the measurement and control information while drilling. And the real-time is guaranteed, which provides the possibility for realizing zero-time difference high-speed wired information transmission. Because cable transmission line has obvious advantages in long distance information transmission, it is suitable for transmitting all kinds of measurement signals while drilling. Therefore, in the development of intelligent drilling, The research on the transmission mode of cable transmission line will become the focus of intelligent drill string. On the basis of the theory of non-uniform transmission line, this paper takes the "two-in-one" information as the starting point, combining the structure of the intelligent drill string and the characteristics of the power transmission line, taking the inhomogeneous transmission line of the intelligent drill string cable as the starting point. The influence factors of transmission characteristics of inhomogeneous transmission line of intelligent drill string cable are analyzed, and the channel model of inhomogeneous transmission line of intelligent drill string cable is studied. Based on the field characteristic and distribution parameter model of the non-uniform transmission line, the electrical characteristic parameters of the intelligent drill pipe and the drill pipe joint are analyzed in this paper. The influence of the temperature change on the impedance of the intelligent drill string cable is considered. The transfer function and transmission matrix of the inhomogeneous transmission line are obtained, and the impedance model of the inhomogeneous transmission line of the intelligent drill string cable is established. A complete communication system is built by using MATLAB/Simulink simulation software. The non-uniform transmission line impedance model of intelligent drill string cable is simulated, the results are analyzed, and the signal transmission rate and transmission distance are explored. The effect of modulation and demodulation on the quality of data transmission is also discussed. In this paper, the transmission characteristics of the inhomogeneous transmission line of the intelligent drill string cable are analyzed, and the non-uniform transmission line impedance model of the intelligent drill string cable is established, and the communication model is built to simulate the transmission line. The communication performance under different parameters is analyzed, which provides a certain reference for the research of intelligent drill string information transmission.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE928
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