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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A method of installing and implementing a rigid tube (10) referred to as a main tube, wherein the following steps are performed: a) lowering an end of the main tube from a floating support or vessel (13) on the surface (14) to below sea level (14) to be connected to undersea equipment (16) that is immersed (17); and b) maintaining the main tube as immersed in this way for a given period of time. The said main tube (10) is caused to pass through a cylindrical orifice (4) of circular section in a stress limiter device, the orifice having a slippery internal coating (3) secured to a support structure (9) secured to the floating support or vessel, the service tube thus being suitable for sliding in contact against the slippery coating during steps a) and b).


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


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 laying vessel (3) for laying continuous elongated members unwound off reels, wherein the laying vessel (3) has a main deck (10); at least one unreeling station (11) along the main deck (10); a pit (12) formed in the main deck (10), beneath the unreeling station (11); and an elevator (30) housed in the pit (12) to lift and lower the reels (1).


Patent
Saipem | Date: 2016-03-09

A urea reactor tray (4) having a base plate (10); and a number of first bottom cup-shaped members (11), which project vertically downwards from the base plate (10); and a number of second top cup-shaped members (11A) which project instead upwards from the base plate (10) and are aligned with and superimposed on respective first cup-shaped members (11).


Patent
Saipem | Date: 2016-08-10

An underwater hydrocarbon processing facility (1) has at least one fluid processing clusters (3a, 3b) provided with modules (4, 5, 6, 7) having, each, one fluid processing device and a plurality of first connection members (9) for defining the inlet and the outlet of the process fluids; and an interconnection unit (8) having a plurality of second connection members (10) defining inlet and outlet for the process fluids and configured to be operatively coupled to corresponding first connection members (9) for operatively interconnecting the modules (4, 5, 6, 7).


Patent
Saipem | Date: 2015-09-08

A vessel for laying a pipeline includes a plurality of workstations disposed along a pipelaying path that includes an upstream portion away from a first end of the vessel and a plurality of ramps in the region of the first end of the vessel. The plurality of ramps includes a first ramp which is disposed along the pipelaying path, whose inclination is adjustable and which has a first upstream end and a second downstream end, and a second ramp which is disposed along the pipelaying path downstream of the first ramp, whose inclination is adjustable and which has a first upstream end and a second downstream end. The downstream end of the first ramp is positioned inboard of the first end of the vessel and above the bottom of the vessel and the upstream end of the second ramp is positioned inboard of the first end of the vessel and above the bottom of the vessel. An external ramp assembly is provided, including ramps and that can be pivoted relative to one another and locked in a selected position by a locking arrangement.


The present invention relates to a method for contemporaneously recovering ammonia and carbon dioxide from an aqueous solution thereof, possibly comprising their condensates, in a synthesis process of urea, characterized in that it comprises a hydrophobic microporous membrane distillation phase of an aqueous solution comprising ammonia, carbon dioxide and their saline compounds or condensates, said distillation being carried out at a temperature ranging from 50 to 250 C. and a pressure ranging from 50 KPa to 20 MPa absolute, with the formation of a residual aqueous solution, possibly comprising urea, and a gaseous permeate stream, comprising ammonia, carbon dioxide and water. The present invention also relates to an apparatus for effecting the above method and a production process of urea which comprises the above method.


A bimetallic tube consisting of at least one tubular element in a first metal resistant to the corrosive and/or erosive action of a process fluid with which it is put in contact, having at least one end, or an area close to an end, externally coated with a layer of a second metal, different from the first and more suitable, with respect to this, for being seal-welded to a support. Tube bundle equipment to be used for thermal exchange operations at high temperatures and pressures, under conditions of high aggressiveness of the process fluids, wherein the tube bundle comprises at least one tube having the above characteristics. Said equipment is particularly used as a heat exchanger and decomposer, for example as a stripper, in the cycle of urea synthesis processes where there are conditions of high pressure, high temperatures, high aggressiveness of the process fluids, and in which the tube bundle consists of at least one tube having the above characteristics.


Patent
Saipem | Date: 2016-04-20

A coating unit for forming a coat of polymer material about cutbacks along steel cylinders joined by welding and having an extruder (36) including an extrusion outlet (38) facing and close to the cutback (18) for extruding a protective sheet (22) wide enough to overlap coatings (13) adjacent to cutback (18), close to the cutback (18); and means (34, 35, 49) for rotating the extruder (36) and the extrusion outlet (38) about the cutback (18), and keeping the extrusion outlet (38) facing and close to the cutback (18) so as to simultaneously wind said protective sheet (22) about the cutback (18), form said coat (21) of polymer material in a single pass, cover the entire cutback (18), and overlap coatings (13).

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