TY - GEN
T1 - Wireless MWD continuous wave signal transfer model and simulation
AU - Jun, Liu
AU - Feng, Yuan
PY - 2013
Y1 - 2013
N2 - Through studying the transportation and vibration of drilling pressure fluctuation in drill stem, mathematical models between pressure flow and time distance are established, the differential equations corresponding to the above-mentioned variables are deduced and general solutions of differential equations are obtained. By analyzing the transferring mode of power transmission signals and describing the influence of drill stem on fluctuation through characteristic impedance and transmittance, the expression of frequency domain hydraulic head and frequency domain flow is given. Through model-simulation, pressure distribution of different signals along drill stem are calculated, which shows, in the process of transferring signals, the pressure wave of drill stem is in the form of standing waves. The influences of different signal terminal impedances and characteristic impedances on signal transfer are analyzed, simulation analysis of the signal of different frequency inside the drill stem is made, and the attenuations of different frequency inside the drill stem are obtained. Through calculating the natural frequency of drill stem, the methods for seeking out the apposite frequency of transmitted signal suitable for data transfer in the drilling stem, which theoretically supports the frequency selection of continuous-wave communication technology.
AB - Through studying the transportation and vibration of drilling pressure fluctuation in drill stem, mathematical models between pressure flow and time distance are established, the differential equations corresponding to the above-mentioned variables are deduced and general solutions of differential equations are obtained. By analyzing the transferring mode of power transmission signals and describing the influence of drill stem on fluctuation through characteristic impedance and transmittance, the expression of frequency domain hydraulic head and frequency domain flow is given. Through model-simulation, pressure distribution of different signals along drill stem are calculated, which shows, in the process of transferring signals, the pressure wave of drill stem is in the form of standing waves. The influences of different signal terminal impedances and characteristic impedances on signal transfer are analyzed, simulation analysis of the signal of different frequency inside the drill stem is made, and the attenuations of different frequency inside the drill stem are obtained. Through calculating the natural frequency of drill stem, the methods for seeking out the apposite frequency of transmitted signal suitable for data transfer in the drilling stem, which theoretically supports the frequency selection of continuous-wave communication technology.
KW - Fluid Network
KW - Measurement While Drilling
KW - Pressure Wave in Drilling
KW - Transfer Matrix
UR - https://www.scopus.com/pages/publications/84904543019
U2 - 10.1109/IMCCC.2013.59
DO - 10.1109/IMCCC.2013.59
M3 - 会议稿件
AN - SCOPUS:84904543019
SN - 9780769551227
T3 - Proceedings - 3rd International Conference on Instrumentation and Measurement, Computer, Communication and Control, IMCCC 2013
SP - 247
EP - 251
BT - Proceedings - 3rd International Conference on Instrumentation and Measurement, Computer, Communication and Control, IMCCC 2013
PB - IEEE Computer Society
T2 - 3rd International Conference on Instrumentation and Measurement, Computer, Communication and Control, IMCCC 2013
Y2 - 21 September 2013 through 23 September 2013
ER -