Abstract: The invention relates to the implementation of a fluid transportation pipe. In order to achieve this, the pipe is equipped with a ballasting system, and, along a laying axis, the pipe, thus equipped, is immersed in a fluid having movement, such as the sea. A ballast mass of the ballasting system then substantially causes at least this ballasting system to sink.

Abstract: The invention relates to the implementation of a fluid transportation pipe. In order to achieve this, the pipe is equipped with a ballasting system, and, along a laying axis, the pipe, thus equipped, is immersed in a fluid having movement, such as the sea. A ballast mass of the ballasting system then substantially causes at least this ballasting system to sink.

Abstract: An installation is provided. The installation includes a plurality of tanks, each tank including a filling opening and being adapted to be arranged on the sea bottom around the well and a device for capturing and distributing hydrocarbons escaping the well. The device includes a bell, a positioner for positioning the bell above the well and a connector for selectively connecting an apex of the bell to the filling opening of any one of the tanks in a fluid manner so as to transfer the fluid into that opening. The invention is applicable to uncontrolled eruptions of offshore oil wells.

Abstract: An installation is provided. The installation includes a plurality of tanks, each tank including a filling opening and being adapted to be arranged on the sea bottom around the well and a device for capturing and distributing hydrocarbons escaping the well. The device includes a bell, a positioner for positioning the bell above the well and a connector for selectively connecting an apex of the bell to the filling opening of any one of the tanks in a fluid manner so as to transfer the fluid into that opening. The invention is applicable to uncontrolled eruptions of offshore oil wells.

Abstract: A device including a tank adapted to be arranged on a sea bottom having a filling opening is provided. The tank includes an inflatable bladder with an elongated shape, made from a flexible material, provided with the filling opening at one end and equipped with connecting members. At least one cable extends over at least the largest length of the bladder and is connected thereto by the connecting members. The present invention is applicable to the treatment of uncontrolled eruptions of offshore oil wells.

Abstract: A method for transporting petroleum products in deep water from the seabed up to a floating or semi-submersible surface structure wherein at least one rigid and straight hybrid riser extends vertically. The hybrid riser has a rigid central hollow tubular structure surrounded by a cylindrical block of syntactic material which provides buoyancy and thermal insulation for the riser. A plurality of rigid pipelines are embedded in the syntactic material and surround the central tubular structure for receiving petroleum products from wells on the sea bed. The bottom of the riser is connected to a suction or gravity anchor at the sea bed. A submerged float is attached to the top of the riser and exerts an upward vertical force thereon. Flexible pipelines connect the rigid pipelines in the riser to the floating or semi-submersible structure.