Wellbore primary barrier and related systems

Assignee

• Weatherford/Lamb

Inventors

• John D. Roberts (17 patents)
• Jan Drechsler (2 patents)
• Tom Salversen (1 patents)
• Tom Unsgaard (5 patents)
• Eirik Enerstvedt (4 patents)
• William A. Blizzard, Jr. (27 patents)
• Dale Langford (26 patents)
• Thurman B. Carter (37 patents)

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