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.
255-350.
Chapter 5 ACOUSTIC WAVE TRANSMISSION MODE OF MWD
The following sections are included:
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5.1. Characteristics and Optimization of Underground Acoustic Transmission
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5.1.1. Formation Channel
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5.1.2. Drilling Fluid Channel
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5.1.3. Drill String Channel
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5.1.4. Optimization of Underground Acoustic Wave Signal Transmission
Channel
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5.2. Acoustic Characteristics of Drill String
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5.2.1. Acoustic Characteristics of Ideal Drill Pipe
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5.2.2. Acoustic Characteristics of Periodic Drill String
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5.2.3. Acoustic Characteristics of Aperiodic Drill String
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5.3. The Influence of Drilling Fluid and Formation on Acoustic Wave Transmission along the Drill String
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5.3.1. Influence of Drilling Fluid on Acoustic Wave Transmission along the
Drill String
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5.3.2. Influence of Formation Boundary on Acoustic Wave Transmission
along Drill String
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5.3.3. Influence of Drilling Fluid and Formation Coupling on Acoustic Wave
Transmission along the Drill String
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5.4. Typical Acoustic Wave Signal Transmission System
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5.4.1. Composition and Function of Typical Acoustic Wave Signal
Transmission System
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5.4.2. Noise of Drilling System
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5.4.3. Downhole System
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5.4.4. Typical Acoustic Wave Signal Transmission System
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5.5. Acoustic NC-OFDM Transmission for MWD Data
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5.5.1. Transmission Scheme Design
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5.5.2. Verification and Analysis