E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/46.1
E21B 43/00 (2006.01) E21B 17/10 (2006.01) E21B 33/035 (2006.01) E21B 33/037 (2006.01)
Patent
CA 1296998
Abstract of the Disclosure A process for oil well drilling and completing operations in deep water which allows an oil well drilled in deep water to start producing, said operations being conducted from a dynamically placed vessel, comprising: providing a permanent guide base (9) on the sea bottom containing a high pressure housing (13) having an upper free end (15) adapted to receive safety, drilling, and production (completion) equipment, the upper free end of the high pressure housing being covered by a protective cover (17) having an external conical part (18), said permanent guide base (9) also having attached thereto, by means of a releasing device, a releasable guide-funnel (10) which covers and protects the upper free end of the high pressure housing during drilling of the well but which prevents said production equipment from being installed because of its size and shape; withdrawing said releasable guide-funnel, after drilling operations are finished, by means of a remote control vehicle which activates said releasing device, thus leaving said protective cover exposed which, because of its conical part, is capable of performing the same guiding work as said guide-funnel after said guide-funnel has been removed; and lowering a production (completion) base (20) onto said permanent guide base (9) whereby said protective cover protects the upper free end of the high pressure housing from damage during said lowering step. Equipment for performing the above process is also disclosed, including the permanent guide base having high pressure housing, a protective cover thereover, and a releasable guide-funnel. The guide-funnel is released through a releasing device activatable by remote control.
555218
Hirotugu Ogura Jayme
Rodrigues Renato Sanches
Gowling Lafleur Henderson Llp
Petroleo Brasileiro S.a. - Petrobras
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