San Donato Milanese, Italy
San Donato Milanese, Italy

Saipem S.p.A. is an Italian oil and gas industry contractor. It is a subsidiary of Italian energy company Eni, which owns approximately 43% of Saipem's shares. Saipem has contracted for designing and constructing several pipelines, including Blue Stream, Greenstream, Nord Stream and South Stream. Wikipedia.


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Patent
Saipem | Date: 2017-02-15

The invention relates to a monohull vessel (1) for laying a pipeline. The vessel (1) includes one or more tensioners (13) disposed along a pipelaying path (P). The pipelaying path (P) includes an substantially horizontal upstream straight portion and a curved portion downstream of the straight portion along which thea downward inclination of the pipelaying path to the horizontal increases. At least one of the at least one tensioners (13) is positioned partway along the curved portion, wherein the vessel (1) further includes welding stations (12) disposed along the upstream portion of the pipelaying path for welding further lengths of pipe to a pipeline being laid along the pipe laying path (P).


A leakage detection system (9) for detecting hydrocarbon leakage from an underwater pipeline (8) in a body of water (5) having a sensor (18) configured to acquire signals related to the temperature of a liquid inside a chamber (19) that is not watertight and which, in use, is full of water and extends along a portion of underwater pipeline (8) susceptible to leakage, and a control unit (22), which is connected to the sensor (18) and is configured to control if the temperature of the liquid in the chamber (19) is within an expected range and emit a leakage signal when the temperature of the liquid in the chamber (19) is outside the expected range.


The present invention relates to a method for installation and implementation of a rigid tube (10), referred to as the main tube, in which the following steps are performed; a) one end of said main tube is lowered from a ship or floating support (13) on the surface (14) to below sea level (14) to be connected there to a submerged submarine device (16), preferably on the seabed (17), and b) the main tube is then maintained submerged for a given period of time, characterised in that said main tube is passed (10) into a cylindrical opening (4) with circular cross-section of a stress limiting device, said opening comprising an internal slippery coating (3) rigidly attached to a rigid support structure (9) of said ship or floating support, the service tube thus being able to slide in contact against said slippery coating during steps a) and b).


A method of joining a tubular member (2) and a pipeline (1) for conveying corrosive products comprises preparing a tubular member (2) with an inner seat (9); inserting the end of a pipeline (1) inside the inner seat (9); inserting a sleeve (15) of corrosion-resistant material inside the end of the pipeline (1); inserting an expandable mandrel (14) inside the sleeve (15); and expanding the expandable mandrel (14) to join the end of the pipeline (1) and the tubular member (2), and seal the sleeve (15) and the pipeline (1) to protect parts of the pipeline (1), sensitive to corrosive products, by means of the sleeve (15).


A recovery system (1) for processing a gas stream from a solidification unit (2) of a urea plant (3), in particular, a cooling air stream used in the solidification unit (2) and containing ammonia, comprises a scrubber (11) connected to the solidification unit (2) and wherein a salt of a metal capable of forming ammonia complexes is used for removing ammonia; and a heat treating unit (12) connected to the scrubber (11) to receive a recovery solution produced in the scrubber (11) and containing at least one ammonia complex, and heating the recovery solution to a controlled temperature such as to degrade said ammonia complex and produce gaseous ammonia for use in the urea plant (3), and the salt, to be reused in the scrubber (11).


A recovery system (1) for processing a gas stream from a solidification unit (2) of a urea plant (3), in particular, a cooling air stream used in the solidification unit (2) and containing ammonia, comprises a scrubber (11) connected to the solidification unit (2), and a heat treating unit (12) connected by an inlet line (21) to a bottom outlet (18) of the scrubber (11) to receive a recovery solution produced in the scrubber (11) and containing at least one ammonia salt, and heating the recovery solution to a controlled temperature such as to degrade said at least one ammonia salt and produce gaseous ammonia for use in the urea plant (3), and at least one further acid ammonia salt or corresponding acid capable of capturing the ammonium group, to be reused in the scrubber (11) to remove ammonia from the gas stream from the solidification unit (2).


A laying device (16) for laying a pipeline (2) on the bed (3) of a body of water (4) having a frame (17); a movable member mounted on the frame (17) and designed to be placed in contact with a pipeline (2) extending along a longitudinal axis (Al) and equipped with special parts (11); and at least one actuator (22) for transmitting rotation to the movable member to apply corrective torsion on the pipeline (2).


A system configured to handle reels for laying elongated members on the bed of a body of water, and in particular for transferring reels between an auxiliary structure and a laying vessel, has a bridge configured to connect the auxiliary structure and the laying vessel; and actuators configured to move a reel along and resting on the bridge.


The present invention relates to a device for installing (20) a tubular joint sleeve inside a pipe (1), including a mandrel (20a) having a longitudinal axis (XX) supporting at least one first peripheral chamber (21) including a wall that can be expanded radially by inflation on the surface, said first wall including at least one electrical connector (21a) capable of being connected to one end of said heating wire, said connector being connected to an umbilical (24) including at least one pipe for supplying compressed air in order to inflate said first chamber and an electricity supply pipe connected to said electrical connector, characterised in that said mandrel supports on the outer surface a second peripheral chamber (22) including a wall that can expand radially by inflation, in addition to welding control means (23) arranged in the longitudinal direction of the mandrel.


A system (1) for laying an underwater pipeline (2) on a bed (3) of a body of water (4) has a construction site (11) to form a string (8) of an underwater pipeline (2), the string (8) being defined by a curved portion (9) shaped substantially like a portion of the bed (3) of the body of water (4) characterized by an abrupt change in slope; at least two vessels (14) to transfer, in the body of water (4), the string (8) from the construction site (11) to a laying site (13) in the body of water (4) and substantially on the vertical of a path (5) along which to lay the string (8); and a plurality of floating devices (15) configured to be coupled to the string (8) and so as to selectively support and sink the string (8) in the body of water, and progressively lay the string (8) along the path (5) on the bed (3) of the body of water (4).

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