Saipem S.a.

Total Sa

Bouygues Offshore

Veolia Eau, Compagnie Generale Des Eaux

Vws Westgarth Limited

Total Se

Raymond Hallot

Michel Pierre Baylot

Xavier Rocher

Stéphane Anres

Pierre Pedenaud

Stéphanie Abrand

Nicolas Chazot

Benjamin Mauries

Didier Bigeonneau

Marc Bonnissel

François Régis Pionetti

Samuel Heng

Cédric Bruguier

Thomas Delaplace

Christophe Colmard

Graeme Skivington

Vincent Cocault-Duverger

Regis Pionetti

Wayne Evans

Carlos Alberto Capela Moraes

Xuan Chi Nguyen

Roberto Di Silvestro

Luc Riviere

David Lothian

Paul Franc

Nicolas Butin

Mourad Ben Boudinar

Fabrice Bacati

Thomas Valdenaire

Sadia Shaiek

Thierry Delahaye

Frédéric Gentil

Jean-Baptiste Le Clezio

Olivier Le Guennec

Nicolas Singling

A method for determining the linear electrical resistance in AC mode of a steel pipeline, including the steps of generating in a portion of the pipeline an induced current by means of an induction coil centered on a longitudinal axis of the pipeline and traversed by an AC current. The coil is housed in a yoke made of ferromagnetic material in order to confine the magnetic field to a predefined surface of the pipeline portion, measuring the active power dissipated by the pipeline portion subjected to the magnetic field, measuring the amplitude of the produced magnetic field, and determining the linear electrical resistance in AC mode of the pipeline portion from the measurements of the dissipated active power and the amplitude of the induced magnetic field. A device is provided for implementing such a method.

Method for determining the linear AC electrical resistance of a steel pipe and device for implementing such a method

A method and system for Direct Electrical Heating of a Pipe-In-Pipe pipeline for transporting fluids includes mechanically connecting the steel inner shell to the steel outer shell at different intervals of the pipeline, establishing an electrical and thermal insulation between the inner shell and the outer shell, applying an alternating electric current between an outer surface of the inner shell and an inner surface of the outer shell over the entire length of the pipeline so as to heat the inner shell of the pipeline by Joule effect, and placing on the outer surface of the inner shell at least one layer made of resistive and ferromagnetic material so as to increase the ratio of electric power transmitted to the inner shell.

Method and system for direct electric heating of a double-walled pipe for transporting fluids

A method for producing a steel underwater pipe for carrying a corrosive fluid, includes the successive steps: applying a layer of corrosion-resistant steel alloy on a terminal part of the internal wall of each pipe element from its end to be welded; the application of a plastic coating, on the internal wall of each pipe element; covering only a first part of the layer of metal alloy, a terminal part of the layer of metal ally on the side of the end to be welded of each pipe element not being covered by the plastic coating; the coaxial insertion and the crimping of a compression ring against the terminal part of the plastic coating; and the assembly by welding directly together the ends of two pipe elements by a corrosion-resistant steel alloy weld.

Method for producing a steel underwater pipe that is able to carry a corrosive fluid

A facility for the subsea disposal of the water produced during deepwater hydrocarbon production, includes a subsea oil/water separation station fed with fluids coming directly from at least one hydrocarbon production well, operating at a pressure independent of and lower than the ambient pressure, and comprising an oil outlet for connecting to a production unit and a water outlet, a flat gravity oil/water separation tank resting on the seabed, continuously fed with water leaving the oil/water separation station, operating at a pressure substantially equal to the ambient pressure, and comprising an oil outlet for connecting to the production unit and a water outlet, and a subsea high-pressure pump connected to the water outlet of the oil/water separation station and to a water inlet of the tank to raise the pressure of the water leaving the oil/water separation station to the ambient pressure before it is admitted into the tank.

Facility and method for underwater disposal of the water produced during underwater production of hydrocarbons at great depths

The invention concerns an underwater water treatment unit which has specific cleaning means which are suitable for cleaning filtration membranes in the unconventional conditions associated with use at great or very great depths, as well as a method for cleaning the membrane of the underwater water treatment unit.

Underwater water treatment unit and method for cleaning said unit

A floating support structure for an offshore wind turbine, comprises a float intended to be partly immersed and on which a wind turbine mast is intended to be assembled, and a counterweight connected to the float and intended to be immersed under the float. The float comprises a toroid or polygon-shaped main structure with at least five sides, a central tubular structure having a diameter adapted to receive the mast of the wind turbine and comprising a section able to be ballasted in order to adjust the waterline of the float, a first series of horizontal struts distributed about a vertical axis and connecting the main structure to the central structure, and a second series of oblique struts distributed about a vertical axis and connecting the main structure to the central structure at an angle comprised between 15&#xb0; and 60&#xb0; with the horizontal struts.

Floating support structure for offshore wind turbine and method for installing a wind turbine provided with such a support structure

A method for assembling pipe-in-pipe pipeline elements for transporting fluids, with each pipeline element comprising an inner pipe including a bulge at one end, and an outer pipe including a recess at one end. The method comprises the successive steps: inserting a first locking wedge axially abutting the bulge of its inner pipe and a corresponding end of its outer pipe, butt-assembling the inner pipe of a new pipeline element on the inner pipe of the pipeline, positioning the outer pipe of the new pipeline element alongside the outer pipe of the pipeline, and butt-assembling the outer pipe of the new pipeline element on the outer pipe of the pipeline by inserting a second locking wedge axially abutting against the bulge of the inner pipe of the pipeline at its free end and the recess of the outer pipe at a corresponding end thereof.

Method for assembling pipe-in-pipe pipeline elements for transporting fluids

A multiphase fluid manifold comprises a cylindrical enclosure having, at one longitudinal end, an inlet orifice and, at an opposite longitudinal end, a plurality of cylindrical outlet orifices of the same right section that are regularly distributed around a longitudinal axis of the enclosure and that are aligned in a common plane extending transversely to the enclosure, each of the inlet and outlet orifices leading to or from the inside of the enclosure along a direction that is substantially tangential to the enclosure.

Multiphase fluid dispenser

A device for installing and handling a module of a subsea processing station, comprises a frame, and a hydraulic system comprising hydraulic cylinders each comprising a cylinder body, and a piston intended to be put into contact with a foot and movable inside the cylinder body between a first mechanical abutment corresponding to a deployed position of the piston and a second mechanical abutment corresponding to a retracted position of the piston. The piston divides the internal volume of the cylinder body into a first chamber and a second chamber. The first chamber is supplied with hydraulic fluid by two independent hydraulic circuits comprising a shock-absorbing circuit able to move the piston between the deployed and intermediate positions located between the deployed position and the retracted position defined by a hydraulic abutment, and a controlled-lowering circuit able to move the piston between the intermediate position and its retracted position.

Device and method for installing and handling a module of a subsea treatment station

A method for testing an underwater filtration system as well as the underwater testing device which enables the operation of filtration systems in aquatic conditions. The testing method includes introducing a flow of water into the underwater testing device via a water inlet, said underwater testing device including at least one filter, bringing said flow in the underwater testing device up to said filter, obtaining a filtrate downstream of said filter and discharging said filtrate into the environment via a discharge pipe. The underwater testing device is placed underwater at a depth of at least 500 meters.

Method and device for the underwater testing of a filtration system

A modular installation for liquid/gas separation of a multiphase fluid such as crude oil. The installation has a plurality of unitary separation devices, each constituted by an enclosure co-operating at its base with a coaxial connection piece connected to a support structure resting on the sea bottom or suitable for being connected thereto. The support structure being suitable for receiving a plurality of the unitary separation devices in reversible manner so as to be able to perform disconnections at will, in particular for increasing the separation capacity of the installation and/or for performing maintenance on the unitary separation device at the surface.

Modular plant and process for liquid/gas separation, in particular for liquid and gaseous phases of a crude oil

A device for transferring fluid from a support installed at sea and fitted with a device for storing flexible pipes having the first ends of a plurality of flexible pipes fastened thereto, the pipes preferably extending between said support and an offloading ship. The pipe device having a first connection and valve device, the pipes being connected to one another at their seconds ends by a the first connection and valve device having n first pipe portions and suitable for being connected to a second connection and valve device, preferably installed on board an offloading ship.

Device for transferring fluid from a marine mounting

A support installed at sea and fitted with a storage and guide device for storing and guiding flexible pipes, the support has a first carrier structure supporting a plurality of turntables arranged one above another, flexible pipes being wound in concentric juxtaposed spiral turns of increasing diameter resting on said turntables, a rotary joint enabling coupling to be established between (1) a first end closest to the center of the turntable of a flexible pipe on said turntable, and (2) an end of a transfer pipe that remains stationary while said turntable is being driven in rotation; a plurality of guides suitable for guiding portions of the flexible pipe outside the turntables.

Marine mounting provided with a device for storing and guiding hoses

A modular liquid/liquid gravity separation device for separating the aqueous phase and the oil phase of a crude oil at the sea bottom. The device has a plurality of separation modules coupled to a common manifold device. Each separation module has a fluid delivery pipe coupled to at least one gravity separation pipe by a tubular bend device. The common manifold device has a first tank fed with crude oil by a feed pipe resting on the sea bottom via a first inlet orifice, a plurality of first outlet orifices feeding crude oil to said delivery pipes. The aqueous and oil phases are separated within the separation pipes before being delivered into a second tank via second inlet orifices of the second tank to which the separation pipes are coupled. The oil phase is conveyed to the surface from the second tank via a first removal pipe. The aqueous phase is conveyed to the sea bottom.

Growing community of inventors

Voisins Le Bretonneux, France

Raymond Hallot