Managed pressure drilling

Assignee

• Weatherford/Lamb

Inventors

• Frederick T. Tilton (39 patents)
• David M. Haugen (138 patents)
• Kevin Smith (6 patents)
• David J. Brunnert (49 patents)
• Thomas F. Bailey (117 patents)
• Tom Fuller (4 patents)
• Roy W. Rooyakkers (1 patents)
• Ram K. Bansal (24 patents)
• Graham Skinner (1 patents)

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