Modeling And Simulation Of Power Transmission And Information Communication In Intelligent Drill String

With the rapid development of the oil industry today, the technology of intelligence and information is more arid more widely used in oil exploration and development. In the modern drilling technology, it,is required that the power supply system on the ground could not only provide electric power to the underground electric drive hardware and software, but also provide the real-time data collection, transmission and processing during the drilling process, and also control the construction technology. Therefore power and information transmission has become the capital problem of intelligent drilling research. It is of great significance to the construction of intelligent drilling space network system to work out the intelligent drilling, which could provide electricity to the underground and has the function of high speed and bidirectional communication.Intelligent drilling string power and information transmission are important parts in the study of this paper. This paper analyzed the advantage of the dc lines, and to the intelligence drill string in power system dc transmission losscal culation; Through the simulation software based on the corresponding electripower transmission model, under different conditions of the power transmission simulation analysis.Compared to many other kinds of signal transmission which are applied in drilling, cable transmission has its own advantages. It can not only provide the underground power supply, but can also provide the bidirectional information transmission. It is the direction of the development of the intelligent drilling signal transmission. Since the underground situation is very complicated, transmission through lines is affected by many external factors. In order to analyze the transmission situation of transmission lines and to improve the quality of transmission, This paper combines uniform transmission line theory, build up an intelligent drill string of signal transmission lines channel model.For intelligent drilling column information transmission, through the research on power line communication technology (PLC) in other fields. This article holds the point that it is feasible to apply PLC to intelligent drilling column information transmission. However, since power lines are used, for the transmission of electricity, its application in communication has its own shortcoming. Meanwhile, intelligent drilling columns which are lying underground stay in an extremely unusual environment, so it is quite necessary to check its feasibility theoretically. According to the electric transmission channel model, we completed a communication simulation of the application of power line wave-carried communication in intelligent drill string in simulink. And in different SNR, transmission speed, demodulation method to power lines carrier communication simulation analysis.Through the research on modeling and simulation in this paper, we verified the correctness of the ’2in1’way, say the combination of intelligent drill string and signal, in intelligent drilling.