Managed pressure cementing

Assignee

• Weatherford Technology Holdings

Inventors

• Don M. Hannegan (41 patents)
• Cesar Pena (6 patents)
• David Pavel (18 patents)
• Michael Brian Grayson (23 patents)
• Said Boutalbi (3 patents)
• Todd Douglas Cooper (2 patents)
• Timothy P. Dunn (2 patents)
• Frank Zamora (82 patents)

View full patent text on Google Patents →