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Introduction to Wellbore Positioning
Summary Contents
Subjects
Page
Acknowledgements
2 4 5
List of Figures Introduction
1. 2. 3. 4. 5. 6. 7. 8. 9.
Coordinate Systems and Geodesy
7
Changing from One Map System to Another True North, Grid North and Convergence
21 23 27 31 35 39 42 44 52 61 62 64 67 72 74 76 82 88
Th E h’sM gn cF ld
Principles of MWD and Magnetic Spacing
In-Field Referencing
Survey Calculation Methods
Survey Frequency Gyro Surveying Basic Gyro Theory When to Run Gyros Correcting for Sag
10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27.
Correcting for Magnetic Interference
Multi Station Analysis
Correcting for Pipe and Wireline Stretch Human Error v Measurement Uncertainty
Understanding Error Models
The ISCWSA Error Models: Introduction
The ISCWSA Error Models: Explanation and Synthesis
Anti-collision Techniques Planning for Minimum Risk
109 121 123 124 126 129 135 138
Basic Data QC
Advanced Data QC
Tortuosity
Some Guidelines for Best Practice
Relief Well Drilling Subsea Positioning
Appendices FULL INDEX
142 159
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