Maritime drilling with fluid reverse circulation without using drilling riser

Assignee

• Petróleo Brasileiro S.A.—Petrobras

Inventors

• Joseir Gandra Percy (1 patents)
• Roni Abensur Gandelman (1 patents)
• Guilherme Ribeiro Magalhaes (1 patents)
• Emilio Cesar Cavalcante Melo Da Silva (1 patents)
• Guilherme Siqueira Vanni (1 patents)
• Augusto Borella Hougaz (1 patents)
• Joao Carlos Ribeiro Placido (1 patents)
• Hugo Francisco Lisboa SANTOS (3 patents)

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