Patents Assigned to Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS)
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Patent number: 4302652Abstract: A method of welding the ends of submerged pipes in a gaseous atmosphere at any depth comprises isolating the ends of the pipes by introducing obturators therein and then introducing the pipe ends into an open topped receptacle which is capped with an underwater personal carrying intervention unit. The closed receptacle is filled with gas and then a sleeve is positioned between the ends of the pipes and welded to the pipes.Type: GrantFiled: June 6, 1979Date of Patent: November 24, 1981Assignees: Compagnie Francaise des Petroles, Etudes Petrolieres Marines, Ateliers et Chantiers de Bretagne - A.C.B., Compagnie Maritime d'Expertises, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (Doris), Societe Nationale Elf Aquitaine (Production)Inventors: Philippe C. Nobileau, Rene M. Dermy, Guy J. Fleury
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Patent number: 4214692Abstract: Butt-welding apparatus for welding two pipes, e.g. for the shipboard welding of a laid pipe and a towed pipe, comprises a frame for receiving the pipe ends, means for securing the pipe ends relative to the frame and compensation means for causing movement of one pipe relative to the other to compensate for any shrinkage caused by the welding operation and by preheating the pipe ends to be welded.Type: GrantFiled: March 30, 1978Date of Patent: July 29, 1980Assignees: Compagnie Francaise des Petroles, Societe Nationale Elf Aquitaine (Production), Ateliers et Chantiers de Bretagne--A.C.B., Etudes Petrolieres Marines, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS), Compagnie Maritime d'ExpertisesInventors: Roger J. Le Garfe, Edmond Pignal, Charles J. Magloire
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Patent number: 4171175Abstract: A system for welding the ends of submerged pipes in a gaseous atmosphere at any depth comprises isolating the ends of the pipes by introducing obturators therein and then introducing the pipe ends into an open topped receptacle which is capped with an underwater personal carrying intervention unit. The closed receptacle is filled with gas and then a sleeve is positioned between the ends of the pipes and welded to the pipes.Type: GrantFiled: July 19, 1976Date of Patent: October 16, 1979Assignees: Compagnie Francaise des Petroles, Societe Anonyme, Etudes Petrolieres Marines, Societe a Responsabilite Limitee, Ateliers et Chantiers de Bretagne-A.C.B., Societe Anonyme, Compagnie Maritime d'Expertises, Societe Anonyme, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS), Societe Anonyme, Societe Nationale Elf Aquitaine (Production), Tour AquitaineInventors: Philippe C. Nobileau, Rene M. Dermy, Guy J. Fleury
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Patent number: 4133180Abstract: In a method of welding together two submerged pipe ends, the pipe ends are spaced apart and introduced through orifices into a receptacle by which they can be isolated from the surrounding medium. The spaced pipe ends are connected by a connection sleeve and after isolation are welded to the connection sleeve.Type: GrantFiled: June 28, 1976Date of Patent: January 9, 1979Assignees: Compagnie Francaise des Petroles, Etudes Petrolieres Marines, Ateliers et Chantiers de Bretagne-A.C.B., Compagnie Maritime d'Expertises, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (Doris), Societe Nationale Elf Aquitaine (Production)Inventors: Philippe C. Nobileau, Rene M. Dermy, Guy J. Fleury
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Patent number: 4103500Abstract: The ends of submerged pipes are connected using a receiver provided with two apertures through which the pipe ends extend, the receiver being adapted to form a watertight enclosure with an intervention unit and housing means for closing the ends of the pipes comprising two stoppers bearing seal means to be applied against the inner walls of the pipe ends and being maintained spaced apart by a first boom, the receiver including means for supporting a sleeve to be connected to the ends of the pipes and a replacement boom located in the sleeve, the connection being performed by introducing the ends of the pipes to be connected into the receiver through the apertures, at least one of the pipe ends being introduced by movement of the receiver relative thereto, closing the ends of the pipes with the stoppers, causing an intervention unit to descend on to the receiver, providing a watertight enclosure therewith, removing the water from the enclosure and placing it under atmospheric pressure, placing the receiver undType: GrantFiled: August 9, 1977Date of Patent: August 1, 1978Assignees: Compagnie Francaise des Petroles, Societe Anonyme, Etudes Petrolieres Marines, Societe a Responsabilite Limitee, Ateliers et Chantiers de Bretagne-A.C.B., Societe Anonyme, Compagnie Maritime d'Expertises, Societe Anonyme, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS) Societe Anonyme, Societe Nationale Elf Aquitaine (Production)Inventors: Philippe C. Nobileau, Rene M. Dermy, Guy J. Fleury
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Patent number: 4068491Abstract: The ends of submerged pipes are connected using a receiver provided with two apertures through which the pipe ends extend, the receiver being adapted to form a watertight enclosure with an intervention unit and housing means for closing the ends of the pipes comprising two stoppers bearing seal means to be applied against the inner walls of the pipe ends and being maintained spaced apart by a first boom, the receiver including means for supporting a sleeve to be connected to the ends of the pipes and a replacement boom located in the sleeve, the connection being performed by introducing the ends of the pipes to be connected into the receiver through the apertures, at least one of the pipe ends being introduced by movement of the receiver relative thereto, closing the ends of the pipes with the stoppers, causing an intervention unit to descend on to the receiver, providing a watertight enclosure therewith, removing the water from the enclosure and placing it under atmospheric pressure, placing the receiver undType: GrantFiled: December 14, 1976Date of Patent: January 17, 1978Assignees: Compagnie Francaise des Petroles, Etudes Petrolieres Marines, Ateliers et Chantiers de Bretagne-A.C.B., Compagnie Maritime d'Expertises, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS), Entreprise de Recherches et d'Activites Petrolieres (E.R.A.P.)Inventors: Philippe C. Nobileau, Rene M. Dermy, Guy J. Fleury
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Patent number: 4068490Abstract: In the assembling and laying of an undersea pipe in which the already submerged pipe portion is suspended from a surface support, the end of the submerged pipe portion being supported on a variable inclination laying ramp, and a new pipe section is moved into alignment with the end of the pipe portion and fixed thereto, the submerged pipe portion is so suspended from the surface support that the tension in the pipe portion is maintained substantially constant irrespective of vertical movements of the surface support caused by the action of waves on the surface support.Type: GrantFiled: May 5, 1976Date of Patent: January 17, 1978Assignees: Compagnie Francaise des Petroles, Etudes Petrolieres Marines, Societe, Ateliers et Chantiers de Bretagne, Compagnie Maritime d'Expertises, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (DORIS), Entreprise de Recherches et d'Activites Petrolieres (E.R.A.P.)Inventor: Michel J. Jegousse
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Patent number: 4067199Abstract: To enable the release and consequent recovery of a support float which supports a load, e.g. a pipe, as it is lowered to the sea bed, a marker buoy is lowered with the float to be released when the load reaches the sea bed, the marker buoy having an inflated flexible envelope which is trapped in a housing fast with the float and having an opening through which the float can escape only when it has been compressed to a predetermined extent under the effects of a predetermined hydrostatic pressure. The marker buoy is connected to the float by a cable and the float is released from the load either by operations on that cable, or on a release cable connected to the float, on appearance of the marker buoy at the water surface.Type: GrantFiled: July 24, 1975Date of Patent: January 10, 1978Assignees: Compagnie Francaise des Petroles, Etudes Petrolieres Marines, Societe Responsabilite Limitee, Ateliers et Chantiers de Bretagne, A.C.B., Societe Anonyme, Compagnie Maritime d'Expertises, Societe Anonyme, Compagnie Generale pour les Developpements Operationnels des Richesses Sous-Marines (Doris), Societe Anonyme, Entreprise de Recherches et d'Activites Petrolieres (E.R.A.P.) Etablissement publicInventor: Michel J. Jegousse