| Description |
1 online resource |
| Contents |
Cover; Title Page; Copyright Page; Contents; Preface; Acknowledgements; 1 Stories from the Field, Fundamental Questions and Solutions; 1.1 Mysteries, Clues and Possibilities; 1.2 Paper No. AADE-11-NTCE -- 74, ""High-Data-Rate MWD System for Very Deep Wells"" -- significantly expanded with additional photographs and detailed annotations; 1.2.1 Abstract; 1.2.2 Introduction; 1.2.3 MWD telemetry basics; 1.2.4 New telemetry approach; 1.2.5 New technology elements; 1.2.5.1 Downhole source and signal optimization; 1.2.5.2 Surface signal processing and noise removal |
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1.2.5.3 Pressure, torque and erosion computer modeling1.2.5.4 Wind tunnel analysis: studying new approaches; 1.2.5.5 Example test results; 1.2.6 Conclusions; 1.2.7 Acknowledgements; 1.2.8 Credits; 1.2.9 Paper references; 1.3 References; 2 Harmonic Analysis: Six-Segment Downhole Acoustic Waveguide; 2.1 MWD Fundamentals; 2.2 MWD Telemetry Concepts Re-examined; 2.2.1 Conventional pulser ideas explained; 2.2.2 Acoustics at higher data rates; 2.2.3 High-data-rate continuous wave telemetry; 2.2.4 Drillbit as a reflector; 2.2.5 Source modeling subtleties and errors |
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2.2.6 Flowloop and field test subtleties2.2.7 Wind tunnel testing comments; 2.3 Downhole Wave Propagation Subtleties; 2.3.1 Three distinct physical problems; 2.3.2 Downhole source problem; 2.4 Six-Segment Downhole Waveguide Model; 2.4.1 Nomenclature; 2.4.2 Mathematical formulation; 2.4.2.1 Dipole source, drill collar modeling; 2.4.2.2 Harmonic analysis; 2.4.2.3 Governing partial differential equations; 2.4.2.4 Matching conditions at impedance junctions; 2.4.2.5 Matrix formulation; 2.4.2.6 Matrix inversion; 2.4.2.7 Final data analysis; 2.5 An Example: Optimizing Pulser Signal Strength |
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2.5.1 Problem definition and results2.5.2 User interface; 2.5.3 Constructive interference at high frequencies; 2.6 Additional Engineering Conclusions; 2.7 References; 3 Harmonic Analysis: Elementary Pipe and Collar Models; 3.1 Constant area drillpipe wave models; 3.1.1 Case (a), infinite system, both directions; 3.1.2 Case (b), drillbit as a solid reflector; 3.1.3 Case (c), drillbit as open-ended reflector; 3.1.4 Case (d), ""finite-finite"" waveguide of length 2L; 3.1.5 Physical Interpretation; 3.2 Variable area collar-pipe wave models; 3.2.1 Mathematical formulation |
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3.2.2 Example calculations3.3 References; 4 Transient Constant Area Surface and Downhole Wave Models; Overview; 4.1 Method 4-1. Upgoing wave reflection at solid boundary, single transducer deconvolution using delay equation, no mud pump noise; 4.1.1 Physical problem; 4.1.2 Theory; 4.1.3 Run 1. Wide signal -- low data rate; 4.1.4 Run 2. Narrow pulse width -- high data rate; 4.1.5 Run 3. Phase-shift keying or PSK; 4.1.6 Runs 4 and 5. Phase-shift keying or PSK, very high data rate |
| Summary |
Trade magazines and review articles describe MWD in casual terms, e.g., positive versus negative pulsers, continuous wave systems, drilling channel noise and attenuation, in very simple terms absent of technical rigor. However, few truly scientific discussions are available on existing methods, let alone the advances necessary for high-data-rate telemetry. Without a strong foundation building on solid acoustic principles, rigorous mathematics, and of course, fast, inexpensive and efficient testing of mechanical designs, low data rates will impose unacceptable quality issues to real-time formation evaluation for years to come. This all-new revised second edition of an instant classic promises to change all of this. The lead author and M.I.T.-educated scientist, Wilson Chin, has written the only book available that develops mud pulse telemetry from first principles, adapting sound acoustic principles to rigorous signal processing and efficient wind tunnel testing. In fact, the methods and telemetry principles developed in the book were recently adopted by one of the world's largest industrial corporations in its mission to redefine the face of MWD. The entire engineering history for continuous wave telemetry is covered: anecdotal stories and their fallacies, original hardware problems and their solutions, different noise mechanisms and their signal processing solutions, apparent paradoxes encountered in field tests and simple explanations to complicated questions, and so on, are discussed in complete "tell all" detail for students, research professors and professional engineers alike. These include signal processing algorithms, signal enhancement methods, and highly efficient "short" and "long wind tunnel" test methods, whose results can be dynamically re-scaled to real muds flowing at any speed. A must read for all petroleum engineering professionals! |
| Bibliography |
Includes bibliographical references and index |
| Notes |
Print version record and CIP data provided by publisher |
| Subject |
Oil well logging, Electric.
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Oil well drilling.
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Orientation -- Measurement
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Wells -- Fluid dynamics.
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Flow meters.
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flowmeters.
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Flow meters
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Oil well drilling
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Oil well logging, Electric
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Wells -- Fluid dynamics
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| Form |
Electronic book
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| LC no. |
2018028712 |
| ISBN |
9781119479369 |
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1119479363 |
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9781119479321 |
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1119479320 |
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1119479150 |
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9781119479154 |
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