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Directional drilling techniques allow drilling wells at planned trajectories and targets. Reasons for directional drilling include reaching a planned target area, obtaining a controlled hole trajectory, and sidetracking or abandoning portions of the hole. Directional drilling is carried out using bottom hole assembly tools like stabilizers, steerable motors, and oriented whipstocks to control the inclination and direction of the wellbore. Measurement while drilling techniques are used to monitor the wellbore trajectory during directional drilling operations.
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presentation_No_3.pdf
- 1. Fundamentals of Drilling Directional Drilling – Fields of Aplication presentation No. 3 Fundamentals of Onshore Drilling references: • Bernt S. Aadnoy, Iain Cooper, Stefan Z. Miska, Robert F. Mitchell, Michael L. Payne: 1 • Bernt S. Aadnoy, Iain Cooper, Stefan Z. Miska, Robert F. Mitchell, Michael L. Payne: Advanced Drilling and Well Technology. SPE 2009, ISBN: 978-1-55563-145-1. • Robello G. Samuel, Xiushan Liu: Advanced Drilling Engineering – Principles and Design. Gulf Publishing Company, Houston Texas, 2009, ISBN: 978-1-933762-34-0. • World Oil´s Handbook of Horizontal Drilling and Completion Technology. Gulf Publishing Company, Houston, Texas 1991, ISBN: 0-87201-361-8. • A Primer of Oilwell Drilling. Petroleum Extension Service, Houston, Texas 2001, ISBN: 0-88698-194-8. •Directional Drilling and Deviation Control Technology. French Oil and Gas Industry Association Technical Committee, 1990.
- 2. Reasons for Directional Drilling / Deviation Control 1) to reach a planned target area 2
- 3. Reasons for Directional Drilling / Deviation Control 1) to reach a planned target area 3
- 4. Reasons for Directional Drilling / Deviation Control 1) to reach a planned target area 4
- 5. Screwing / Unscrewing Drillpipe 2) to obtain / control a planned hole trajectory 5
- 6. Screwing / Unscrewing Drillpipe 3) to sidetrack or abandon a portion of a hole 6
- 7. Terminology of Directional Well Profiles 7
- 8. Classification of Buildup - Rates 8
- 9. Measuring the Wellbore Course 9
- 10. Key Seat Buildup in Doglegs Dogleg Severity (DLS) means CURVATURE of the hole expressed in Degrees / 100 ft DLS is critical for: building of keyseats torque and drag casing running operation running logging sondes 10
- 11. Measurement While Drilling (MWD) Techniques 11
- 12. Why Hole Deviation Occurs? 12
- 13. Why Hole Deviation Occurs? 13
- 14. 14
- 15. Controlling Hole Inclination by Bottom Hole Assembly (BHA) 15
- 16. Basic Types of Stabilizing Tools 16
- 17. Controling Hole Inclination with Adjustable Stabilizers 17
- 18. Controlling Wellbore Trajectory with Steerable DHM 18
- 19. Positive Displacement Motor (PDM) 19
- 20. Positive Displacement Motor Components 20
- 21. Performance Characteristic of Drilling Turbines 21
- 22. Directional Drilling with DHM – Steering Systems 22
- 23. Open Hole and Cased Hole Sidetracking with a Cement Plug 23
- 24. Sidetracking with Oriented Whipstock Technique 24
- 25. THE END!!! 25
- 26. 26