E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/12 (2006.01) E21B 33/035 (2006.01) E21B 41/00 (2006.01)
Patent
CA 2147562
A single drilling guide base for subsea oil wells comprising two parts, namely a lower part (1) and an upper part (2), which are bolted together (at 7), the whole arrangement being provided with a seating indicator (5).
Awad Samir Passos
Nogueira Emmanuel Franco
Gowling Lafleur Henderson Llp
Petroleo Brasileiro S.a. - Petrobras
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