The Research of Data Transmission Technology in Measurement While Drilling
Jian Wang Hanyun Wen
(2018)
The Research of Data Transmission Technology in Measurement While Drilling: pp.
163-254.
Chapter 4 WIRELESS ELECTROMAGNETIC TRANSMISSION SYSTEM OF MEASUREMENT WHILE DRILLING
The following sections are included:
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4.1. Theoretical Research on Wireless Electromagnetic Transmission of MWD
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4.1.1. Model of Wireless Transmission System
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4.1.2. Magnetic Circuit and Electrical Circuit of Wireless Transmission
System
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4.1.3. System Magnetic Ring Material
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4.2. Parameters of Key Components of Typical EM-MWD and Analysis of ANSYS
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4.2.1. Selection of Winding Materials
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4.2.2. Parameters of Transmitting Coil
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4.2.3. Parameters of Receiving Coil
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4.2.4. Coil Parameters of Ferrite Core
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4.2.5. ANSYS Finite Element Analysis of Annular Coil
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4.3. Typical Wireless EM-MWD Conditioning Circuit
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4.3.1. Signal Emission and Conditioning Circuit
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4.3.2. Signal Receiving and Conditioning Circuit
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4.3.3. Signal Demodulation Results
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4.4. Simulation Experiment of Wireless Electromagnetic Transmission Laboratory
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4.5. Eliminating Interference Signal Algorithm of EM-MWD
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4.5.1. Power Frequency Interference Elimination Based on Interference
Parameter Estimation
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4.5.2. Experimental Results
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4.6. Wireless Measurement While Drilling System of E-LINK
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4.6.1. Structures and Principles
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4.6.2. Field Application
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4.6.3. Performance Analysis
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4.6.4. Summary
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4.7. CQEMWD-I, the Electromagnetic Wave Relay Transmission MWD System
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4.7.1. Principles and Characteristics
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4.7.2. Technical Parameters
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4.7.3. Field Popularization and Application