MWD Overview - Meeting 40

MWD Objective

• Get downhole Inclination, Azimuth, Toolface and Data Quality to Directional Driller as quickly as possible.

Minimum Survey

• Inclination
• Azimuth
• Toolface
• Data Quality Flag

Basic Issues

• Default Quality Limits – Often very large +/- 5000 nt on B Total and +/=5 degrees on Dip
• Fail ‘good’ surveys
• Pass ‘bad’ surveys
• Hardware modified (Frankentools) [Sensors, Electronics, Power Supply]
• Hardware and firmware limited

Advanced Issues

• Azimuth Correction
• Multi-Station Correction
• Magnetic Mud

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MWD Overview - Meeting 40

Steve Grindrod

 

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