SAIPEM S.p.A. Patent applications |
Patent application number | Title | Published |
20160082394 | METHOD FOR THE SEPARATION OF AMMONIA AND CARBON DIOXIDE FROM AQUEOUS SOLUTIONS - 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. | 03-24-2016 |
20150377384 | UNDERSEA PIPE-LAYING - 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. | 12-31-2015 |
20150251968 | Process for the Production of High-Purity Isobutene Through the Cracking of MTBE or ETBE and Integrated Process for the Production of the Relative Ether - Process for the production of high-purity isobutene starting from a stream prevalently containing MTBE (Methyl-Tert Butyl Ether) or ETBE (Ethyl-Tert Butyl Ether) which essentially comprises the following areas in sequence: a fractionation area for obtaining a stream of high-purity MTBE or ETBE; a cracking area of said stream of MTBE or ETBE for obtaining an outgoing stream prevalently containing isobutene and the relative alcohol, methanol or ethanol; a washing area with water of the stream leaving the cracking area for the recovery of the relative alcohol, in order to obtain a stream containing isobutene, the ether fed and light compounds and a stream substantially consisting of water and relative alcohol, with a relevant fractionation section for separating the washing water to be recycled to the same washing area from the relative alcohol; a fractionation area of the stream containing isobutene, the ether fed and light compounds for separating a stream of high-purity isobutene. The process can be possibly integrated with a process for the production of MTBE or ETBE. | 09-10-2015 |
20150139736 | LAYING OF CONDUIT AT SEA USING HORIZONTAL REELS - A method of laying conduit at sea from a reel vessel includes the steps of laying conduit, for example pipeline or umbilical, from a first reel which rotates about a first substantially vertical axis. Conduit is laid from a second reel of conduit rotating about a second substantially vertical axis spaced apart from the first axis. A portion of the route travelled by the conduit during the step of laying conduit from the first reel of conduit is substantially the same as a portion of the route travelled by the conduit during the step of laying conduit from the second reel of conduit, for example, the conduit from the second reel may pass around a part of the periphery of the first reel and then follow substantially the same path as previously travelled by the conduit laid from the first reel. | 05-21-2015 |
20140321920 | METHOD AND VESSEL FOR LAYING A PIPELINE - A stinger extends away from an end of a vessel, and a pipeline passes over the stinger as the pipeline is laid from the vessel. The inclination of the pipeline increases as the pipeline passes along the stinger and after leaving the stinger until the pipeline reaches an inflection point beyond the end of the stinger at which inclination is at a maximum. Inclination of the pipeline thereafter reduces until the pipeline touches down on the seabed. A method of S-laying the pipeline includes providing guides on the stinger that limit lateral movement of the pipeline relative to the stinger and moving the vessel and the stinger during S-laying to an orientation in which the longitudinal axis of the stinger is inclined to the path of the pipeline just laid. The vessel and the stinger are rotated about a vertical axis passing through or adjacent to the inflection point. | 10-30-2014 |
20140294511 | PIPELINE ABANDON AND RECOVER METHOD AND SYSTEM USING A ROPE CONNECTED TO THE PIPELINE, AND ADAPTER FOR IMPLEMENTING THE METHOD - A pipeline A/R method using a rope connected to the pipeline, the method including winding/unwinding the rope utilizing a hauling machine to exert pull on the rope; adapting a crawler pipeline tensioning device to grip the rope in the crawler tensioning device; and exerting additional pull on a portion of rope between the crawler tensioning device and the pipeline. | 10-02-2014 |
20140286709 | METHOD AND SYSTEM FOR SECURING A PIPELINE TO THE BED OF A BODY OF WATER - A method of securing a pipeline to the bed of a body of water includes moving an underwater vehicle selectively, on the bed of the body of water, along the pipeline; transporting a plurality of fastening devices on the underwater vehicle; and driving each fastening device partly into the bed of the body of water, close to the pipeline, by a handling device mounted on the underwater vehicle, to confine the pipeline between the bed of the body of water and the fastening device. | 09-25-2014 |
20140241808 | LAYING VESSEL FOR LAYING PIPELINES ON THE BED OF A BODY OF WATER, AND LAYING VESSEL OPERATING METHOD - A laying vessel configured to lay pipelines on the bed of a body of water has a floating structure; a laying tower hinged to the floating structure and configured to assemble and lay a pipeline on the bed of the body of water; and an A&R system configured to abandon and recover the pipeline; and wherein the A&R system has a haul line; and a sheave assembly configured to guide the haul line, and which is fitted to the floating structure to move between a work position at the laying tower, and a position away from the laying tower. | 08-28-2014 |
20140169884 | FLUIDIFIED INERT MATERIAL SPREADING DEVICE FOR BURYING AN UNDERWATER PIPELINE, AND METHOD OF SPREADING FLUIDIFIED INERT MATERIAL OVER AN UNDERWATER PIPELINE - A fluidified inert material spreading device configured to bury a pipeline in a body of water is configured to travel in the body of water in a travelling direction along and over the pipeline, and has a hull, which extends along a longitudinal axis, houses at least one expansion chamber for fluidified inert material, is connected to at least one feed port to feed the fluidified inert material to the expansion chamber, and has a quantity or number of outlet ports configured to release the fluidified inert material from the expansion chamber, close to the pipeline, and which as a whole define a flow cross section greater than the flow cross section of the feed port. | 06-19-2014 |
20140081046 | HIGH-YIELD PROCESS FOR THE SYNTHESIS OF UREA - A process for the direct synthesis of urea from ammonia and carbon dioxide at high pressures and temperatures, with the formation of ammonium carbamate as intermediate, comprising a decomposition step of the ammonium carbamate and stripping of the gases formed, operating substantially at the same pressure as the synthesis step, wherein the recycled liquid streams are fed, at least partially, to the same decomposition and stripping step after being preheated by heat exchange with a stream included in the high-pressure synthesis cycle. | 03-20-2014 |
20140072370 | A/R METHOD AND APPARATUS THEREFOR - A method of abandoning a pipeline from an offshore vessel, wherein the method includes the steps of: providing a tubular member between a winch apparatus and the end of the pipeline being abandoned, the tubular member being received in a tensioning apparatus, and lowering the pipeline with the winch apparatus and the tensioning apparatus, the tensional load of the pipeline being held by the tensioning apparatus and the winch apparatus at the same time. | 03-13-2014 |
20140034216 | Pipe-Joining Method for Building Hydrocarbon Pipelines, in Particular, Underwater Pipelines - A pipe-joining method for building a hydrocarbon pipeline, in particular an underwater pipeline, includes welding two adjacent pipes to form a cutback, and forming a protective coating about the cutback. Forming the protective coating includes applying an LE (liquid epoxy) resin or a powdered FBE (fusion bonded epoxy) resin to the cutback to form a primer coat; and applying a powdered polypropylene adhesive on top of the still-wet primer coat to form an auxiliary adhesive coat. Forming the protective coating also includes fitting a polypropylene heat-shrink sleeve around the auxiliary adhesive coat; and heating the sleeve to shrink and bond the sleeve to the auxiliary adhesive coat. | 02-06-2014 |
20130312915 | PIPE-JOINING METHOD AND APPARATUS FOR PRODUCING UNDERWATER PIPELINES, AND UNDERWATER-PIPELINE-LAYING VESSEL COMPRISING SUCH AN APPARATUS - A method of joining pipes to produce underwater pipelines, wherein the facing free ends of two adjacent pipes, aligned along an axis, are welded to define a cutback; a protective sheet of plastic material is extruded close to the cutback; and the protective sheet is wound about the cutback. | 11-28-2013 |
20130294838 | PIPE-LAYING VESSEL AND METHOD OF LAYING A PIPELINE - A pipe-laying vessel including a pipe-laying tower extending upwardly from the vessel, the tower including a first lower section extending upwardly from a proximal end to a distal end above the main deck of the vessel, and a second upper section movably mounted on the first lower section, and the tower having a first pipe-laying configuration for laying pipeline P in which the upper section is positioned above the lower section and pipe is passed from the upper section to the lower section when, in use, it is being laid, and a second stowed configuration in which the second upper section is moved relative to the lower section and the overall height of the tower is reduced. | 11-07-2013 |
20130279989 | CLAMP ASSEMBLY FOR PIPE-LAYING VESSEL AND METHOD OF LAYING A PIPELINE - A pipe-laying vessel including a pipe-laying tower extending upwardly from the vessel, the vessel including a welding station for joining a new pipestring to an end of the pipeline held by the tower, a clamp assembly on the tower for engaging a pipestring with a lower end adjacent to the end of the pipeline held by the tower and with the pipestring extending upwardly from its lower end alongside the tower, wherein the clamp assembly includes a pipestring clamp that serves both the function of a transfer clamp for transferring the pipestring from a position alongside the tower but displaced from the pipe-laying path to a position approximately aligned with the pipe-laying path, and the function of a line-up clamp for lining up the pipestring with the end of the pipeline. | 10-24-2013 |
20130272821 | Method and Kit for Transferring Pipes from a Carrier Vessel to an Underwater-Pipeline Laying Vessel - A method of transferring pipes from a carrier vessel to a laying vessel includes gripping the pipes in the hold of the carrier vessel and releasing the pipes, in a given position, inside a transfer station on the carrier vessel by means of a manipulator mounted on the carrier vessel. The method also includes guiding a gripping device, connected to a crane, into said given position at the transfer station. | 10-17-2013 |
20130142575 | Method of Laying a Pipeline from a Laying Vessel onto the Bed of a Body of Water, and Laying Vessel - A method of laying a pipeline from a laying vessel into a body of water includes guiding the pipeline along a supporting structure of a laying ramp using a number of guide devices, and acquiring an image of the pipeline, in an acquisition plane crosswise to the axis of the pipeline, at the free end of the laying ramp. The method also includes determining whether the acquired image is within an acceptance range predetermined as a function of the configuration of the supporting structure and the size of the pipeline, and emitting an error signal when the acquired image is not within the acceptance range. | 06-06-2013 |
20130123536 | TUBE-BUNDLE EQUIPMENT FOR PROCESSING CORROSIVE FLUIDS - Tube-bundle equipment for heat exchange operations at high pressures and temperatures, under conditions of high aggressiveness of the process fluids, comprising a titanium lining ( | 05-16-2013 |
20130115008 | UNDERSEA PIPE-LAYING - A vessel for laying a pipeline includes 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. | 05-09-2013 |
20130051921 | Hoisting Method and Assembly for Abandoning and/or Recovering an Underwater Pipeline from a Laying Vessel, and Laying Vessel Equipped with such a Hoisting Assembly - A method of abandoning or recovering an underwater pipeline from a laying vessel includes the steps of looping a first rope about a pulley connected to the free end of the pipeline; end-locking the first rope, on one side, to the laying vessel; and winding or unwinding the first rope, on the other side, by means of a first winch located on the laying vessel. | 02-28-2013 |
20130034389 | UNDERSEA PIPE-LAYING - 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. | 02-07-2013 |
20130017019 | Laying Ramp, Laying Unit Comprising Such a Laying Ramp, and Method of Operating Such a Laying UnitAANM Bianchi; StefanoAACI Cermusco sul NaviglioAACO ITAAGP Bianchi; Stefano Cermusco sul Naviglio ITAANM Piccio; FlavioAACI MilanoAACO ITAAGP Piccio; Flavio Milano ITAANM Giovannini; UmbertoAACI CorsicoAACO ITAAGP Giovannini; Umberto Corsico ITAANM Mottini; MauroAACI Travaco' SiccomarioAACO ITAAGP Mottini; Mauro Travaco' Siccomario IT - A laying ramp for laying a pipeline on the bed of a body of water can include an elongated frame having a first and second end; connecting members connecting the first end of the elongated frame to a vessel; at least one guide device fitted to the elongated frame to guide the pipeline along the elongated frame; and a support assembly, which has at least one undercarriage to roll along the bed of the body of water and support the second end of the elongated frame. | 01-17-2013 |
20130008548 | PIPELINE WELD REPAIRING METHOD AND APPARATUS - A method for repairing a defective circumferential weld joint between two pipe sections in a pipeline is described. A weld excavation machine is used to remove a weld defect. The machine comprises a weld excavating tool and a tool guiding apparatus. The machine may be modular in form allowing the machine to be dissembled into discrete portable parts. The method includes arranging the tool guiding apparatus in fixed relation to the pipeline, guiding the weld excavating tool around the pipe and along the weld joint by means of the tool guiding apparatus and using the weld excavating tool to remove material from the defective weld region. An excavation may thus be formed having parallel vertical walls. The excavation is then filled with weld material by means of a welding apparatus. | 01-10-2013 |
20120298628 | METHOD OF AND A WELDING STATION FOR LAYING A PIPELINE, WITH PIPE SECTION WELDED TOGETHER BY INTERNAL AND EXTERNAL WELDING - A method of laying a pipeline is described in which both internal and external weld passes are performed in order to weld together the pipe sections. The method includes arranging a pipe section adjacent to the end of a pipeline thereby defining a circumferential joint to be welded, performing an external weld pass, with for example GMAW—MIG torches, on the root of the joint to be welded during which weld material is deposited in the root of the joint to be welded, thereby forming a root weld, and then performing an internal weld pass, with for example a GTAW—TIG torch, on the root weld during which the root weld is melted and re-shaped. The method has particular application in relation to pipes clad with corrosion resistant alloy. | 11-29-2012 |
20120288334 | Digging Method and Assembly for Laying a Pipeline in the Bed of a Body of Water - A method of laying a pipeline in the bed of a body of water advancing a digging assembly along a pipeline laid along a path on the bed of the body of water, and digging a trench along the path in the bed of the body of water by means of the digging assembly, so a portion of pipeline settles onto the bottom of the trench: The method also includes acquiring, by means of the digging assembly, data related to the bathymetric profile of the portion of pipeline laid on the bottom of the trench, and comparing the acquired data with a set of permissible values. Further, the method includes emitting an error signal when the acquired data does not fall within the set of permissible values. | 11-15-2012 |
20120269582 | Method of Joining Two Portions of an Underwater Pipeline for Conducting Fluids and/or Gas - A method of joining two portions of an underwater pipeline for conducting fluid and/or gas on the bed of a body of water, the method including the steps of: joining a telescopic sleeve, having a first coupling head, to a first end of a first pipeline portion above the body of water; positioning the first end, the telescopic sleeve, and the first coupling head in a first given position on the bed of the body of water; joining a second coupling head to a second end of a second pipeline portion above the body of water; positioning the second end and the second coupling head in a second given position, close to the first coupling head, below the body of water; and connecting the first and second coupling head hermetically below the body of water. | 10-25-2012 |
20120269579 | Method of Abandoning an Underwater Pipeline on the Bed of a Body of Water - A method of abandoning an underwater pipeline on the bed of a body of water from a laying vessel includes the steps of lowering the free end of the pipeline into the body of water and onto the bed of the body of water using a first and second rope, both connected to the free end of the pipeline and extending from the laying vessel to the free end of the pipeline. The method also includes disconnecting the first rope from the free end of the pipeline, once the free end of the pipeline is laid on the bed of the body of water; and rewinding the first rope onto the laying vessel, while the second rope is still connected to the free end of the pipeline. | 10-25-2012 |
20120266797 | Multipurpose Deepwater Vessel - A multipurpose deepwater vessel equipped with a floating structure having a bow, a stern, a weather deck, a first board, and a second board; a J-lay tower hinged to the floating structure along the second board, and movable about a first axis into a number of work positions to join pipe assemblies into an underwater pipeline, and to lay an underwater pipeline; a heavy-duty crane connected at the bow to the floating structure to rotate about a second axis, and having a boom defining an operating range within which the J-lay tower is located in any one of its work positions; and a preassembly line, below the weather deck, for joining pipes into pipe assemblies for supply to the J-lay tower. | 10-25-2012 |
20120261914 | Method of Joining Two Portions of an Underwater Pipeline Laid on the Bed of a Body of Water to Conduct Fluid and/or Gas - A method of joining two portions of an underwater pipeline laid on the bed of a body of water to conduct fluid and/or gas, the method including: joining a telescopic sleeve, having a first coupling head, to a first end of a first pipeline portion above the body of water; laying the first end, the telescopic sleeve, and the first coupling head on the bed of the body of water; joining a second coupling head to a second end of a second pipeline portion above the body of water; laying the second end and the second coupling head on the bed of the body of water, close to the first coupling head; roughly aligning the first and second coupling head in the body of water; and clamping the first and second coupling head to each other in the body of water. | 10-18-2012 |
20120228225 | METHOD FOR THE SEPARATION OF AMMONIA AND CARBON DIOXIDE FROM AQUEOUS SOLUTIONS - 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. | 09-13-2012 |
20120189528 | PROCESS AND APPARATUS FOR RECOVERING AMMONIA FROM A GAS STREAM - The present invention relates to a process for the recovery of ammonia contained in a gaseous stream, said process comprising the following phases: (a) subjecting the gaseous stream containing ammonia to a washing with an aqueous washing solution having a pH lower than 7.0, with the formation of a purified gaseous stream and an aqueous solution containing an ammonium salt; (b) treating the aqueous solution containing the ammonium salt coming from phase (a) in a vertical falling film heat exchanger at a temperature from 50 to 250° C. and an absolute pressure ranging from 50 KPa to 4 MPa with the formation of a regenerated washing solution and a gaseous stream comprising NH | 07-26-2012 |
20120177443 | Clamp Assembly For A Laying Tower And A Method Thereof - A clamp assembly, for a laying tower for laying continuous, elongated members in a body of water, has a supporting frame; and three clamping units arranged in series to simultaneously clamp and release a continuous, elongated member extending along a given axis, and each having at least two opposite jaws, and self-adjusting mechanisms, each of which is interposed between a respective jaw and the supporting frame, has a spring, and allows an adjustment movement of the respective jaw with respect to the supporting frame in a direction parallel to the axis, under the weight of the continuous, elongated member, and in opposition to the spring, when the continuous, elongated member is gripped simultaneously by the clamping units. | 07-12-2012 |
20120145309 | PIPE-JOINING METHOD AND APPARATUS FOR PRODUCING UNDERWATER PIPELINES, AND UNDERWATER-PIPELINE-LAYING VESSEL COMPRISING SUCH AN APPARATUS - A method of joining pipes to produce underwater pipelines, wherein the facing free ends of two adjacent pipes, aligned along an axis, are welded to define a cutback; a protective sheet of plastic material is extruded close to the cutback; and the protective sheet is wound about the cutback. | 06-14-2012 |
20120134751 | UNDERWATER PIPE-LAYING - A pipe-laying vessel for S-laying a pipeline is provided, the vessel defining a pipe-laying path extending along the vessel. The vessel includes one or more track tensioners disposed along the pipe-laying path, and a travelling clamp assembly, including a clamp mounted for movement along a length of the pipe-laying path. The vessel may also include a fixed clamp assembly located on the pipe-laying path for clamping the pipeline in a fixed position on the pipe-laying path. At least one of the clamp assemblies may include a load bearing structure and a clamp wherein a downstream-facing portion of the clamp is in an abutting relationship with an upstream-facing portion of the load bearing structure such that a downstream force exerted, in use, by the pipeline on the clamp is transmitted to the load bearing structure. | 05-31-2012 |
20120114420 | GROUP AND METHOD FOR LAYING AND BURYING PIPELINES AT THE SEAFLOOR - The present invention relates to a group and a method for laying and burying pipelines at the seafloor, wherein the laying and burying group according to the present invention comprises a digging device ( | 05-10-2012 |
20120111255 | Traction Method And System For An Operating Line, In Particular A Mooring Line, Of A Floating Production Unit - A traction method for an operating line, in particular a mooring line, of a floating production unit includes the steps of: attaching an end chain portion of the operating line to a socket of a main cable running through a sheave at a work station; reeling in the main cable, using a winch, to bring the socket of the main cable up to the sheave; locking the operating line with a chain stopper; slackening the main cable and moving the sheave closer to the chain stopper to reduce pull on the main cable; reeling in the main cable to run the socket of the main cable through the sheave; once the socket of the main cable has run through the sheave, releasing the operating line from the chain stopper, and reeling in, by means of the winch, the main cable and the operating line connected to it, to set the operating line to a given tension. | 05-10-2012 |
20120097378 | TUBE BUNDLE EQUIPMENT WITH LIQUID FLOW REGULATOR ELEMENTS - Tube-bundle equipment of the falling liquid film type, comprising a vertical cylindrical body closed at the ends and divided into at least an upper section, an intermediate section and a lower section by means of two perforated tube sheets arranged transversally to support the tubes forming the bundle, wherein each of said tubes is surmounted, on the upper end, by a ferrule, for the inlet and distribution of the liquid in the form of a film, which comprises in the upper part, one or more openings for the outlet of vapours, at an intermediate height one or more openings, preferably tangential, for the inlet of the liquid and below, a circular base for resting on said tube from which an internal cylindrical section, inserted in the tube for a length varying from 10 to 200 mm, protrudes downwards together with an outer metallic strip for a length of at least 2 mm, so that, in the circular area defined between said outer metallic strip and said protruding cylindrical section, there is a gasket, inserted between said circular base of the ferrule and said upper edge of the tube. | 04-26-2012 |
20120093585 | PIPE-LAYING VESSEL AND METHOD OF LAYING A PIPELINE - A pipe-laying vessel ( | 04-19-2012 |
20120039787 | PROCESS FOR THE RECOVERY OF AMMONIA FROM A GASEOUS STREAM - A process for the recovery of ammonia contained in a gaseous stream is described, said process comprising the following phases: (a) subjecting the gaseous stream containing ammonia to a washing (S) with an aqueous washing solution ( | 02-16-2012 |
20120018166 | Vessel For Operating On Underwater Wells And Working Methods Of Said Vessel - A vessel for operating on underwater wells has a deck; a moon pool extending through the deck; a further deck elevated above the moon pool and having a hole; and a compensation unit, which is mounted on the deck above the moon pool, is arranged between the deck and the further deck, and is provided with a frame sliding along the deck, a support carrier moveable with respect to the frame in a direction substantially vertical and suitable to support items, and a driving assembly connecting the support carrier to the frame and suitable to be selectively set so as to displace in the direction the support carrier either in a heave compensation mode or in a elevator mode. | 01-26-2012 |
20120010451 | PROCESS FOR OBTAINING HIGH-PURITY 1-BUTENE FROM C4 HYDROCARBON MIXTURES - A process is described for obtaining high-purity 1-butene starting from C | 01-12-2012 |
20120009021 | SUBMARINE PIPELINE TOWING EQUIPMENT, SYSTEM AND PROCESS - A submarine pipeline towing equipment including: a floater of prismatic shape with a horizontal or vertical axis, with a variable or partially variable buoyancy, whose lower base is at least partially open by an opening or hole to operate as an air chamber. The floater includes: at least one inlet including a valve through which air is supplied; at least one outlet including a valve through which air is discharged; an actuator to control the valve to supply air; an actuator to control the valve to discharge air; a mechanism connecting the equipment to the pipeline; a mechanism transferring air to the floater; a mechanism actuating the actuator to control the valve to supply air in function of a predefined level in the floater; and a mechanism actuating the actuator to control the valve to discharge air in function of the distance of the floater itself from the seabed. | 01-12-2012 |
20120003047 | UNDERWATER PIPE-LAYING APPARATUS AND METHOD - A pipe-laying apparatus and method for laying or raising a pipeline from a vessel. The apparatus includes a first pipe gripping assembly disposed on a pipe laying path along which pipeline passes during laying, a second pipe gripping assembly disposed on the pipe-laying path, and a drive unit for causing relative movement in a direction along the pipe-laying path between the first pipe gripping assembly and the second pipe gripping assembly. The first pipe gripping assembly includes both a pipe gripping arrangement for gripping a pipe during pipe-laying and a cable gripping arrangement for gripping a cable during an operation when a cable is connected to a length of pipeline. | 01-05-2012 |
20110260481 | GRIPPING DEVICE FOR GRIPPING UNDERWATER PIPELINES AT THE LAYING STAGE, AND RELATIVE AUXILIARY GRIPPING TOOL - A gripping device, for gripping underwater pipelines at the laying stage, has jaws that are pressed onto a pipeline extending along an axis substantially parallel to a laying direction, and have respective friction pads that are brought cyclically into contact with the outer face of the pipeline; and auxiliary gripping tools, which have panels for covering respective friction pads, and are selectively connectable to the jaws to increase grip between the jaws and the pipeline. | 10-27-2011 |
20110236137 | PIPE-LAYING VESSEL AND METHOD OF LAYING A PIPELINE - A pipe-laying vessel ( | 09-29-2011 |
20110213186 | MODIFIED TUBULAR REACTOR AND PROCESS FOR EFFECTING CATALYTIC REACTIONS INVOLVING THERMAL EXCHANGES IN WHICH IT IS USED - A tubular reactor is described, for catalytic reactions involving thermal exchanges, in particular for etherification reactions between branched olefins and linear alcohol, for dimerization reactions of branched olefins or cracking reactions, essentially consisting of a vertical tube-bundle exchanger whose tubes contain catalyst, having inlet and outlet nozzles for each passage side of the reagents, catalyst and thermal exchange liquid, characterized in that it has one or more metallic supports situated outside the lower tube plate in the lower part of the reactor for sustaining the catalyst so that the same catalyst is contained not only in the tubes of the tube-bundle but also in said lower part outside the lower tube plate and also in the upper part outside the upper tube plate. | 09-01-2011 |
20110211913 | Method And System Of Laying Underwater Pipelines In The Bed Of A Body Of Water - A method of laying underwater pipelines in the bed of a body of water, the method including laying an underwater pipeline along a given path on the bed of the body of water; breaking up a ground mass along the path to a given depth in the bed; and fluidifying the broken ground mass beneath the underwater pipeline to sink the underwater pipeline into the fluidified ground mass. | 09-01-2011 |
20110198316 | METHOD AND APPARATUS FOR MEASURING A PIPE WELD JOINT - An internal line-up clamp ( | 08-18-2011 |
20110148016 | DEVICE FOR DAMPING AND MECHANICAL DISSIPATION OF DYNAMIC DISTURBANCES TRANSMITTED BETWEEN TWO BODIES, GENERATED BY FORCING ELEMENTS OF A DYNAMIC, SEISMIC NATURE AND BY WAVE-MOTION IN GENERAL STRUCTURES - The present invention relates to a damping and dissipation device ( | 06-23-2011 |
20110091369 | METHOD FOR THE RECOVERY OF AMMONIA FROM A GASEOUS STREAM IN A SYNTHESIS PROCESS OF UREA - The present invention relates to a process for the recovery of ammonia contained in a gaseous purging stream produced in a synthesis process of urea, comprising the following phases: a) subjecting the gaseous purging stream to a washing with an aqueous acidic solution, at a pH ranging from 1 to 6, with the formation of a first purified gaseous stream and an aqueous solution containing an ammonium salt; b) subjecting the aqueous solution containing the ammonium salt coming from phase a) to stripping, after treatment with a strong base, at a temperature ranging from 50 to 250° C. and a pressure ranging from 1 to 40 absolute bar, with the formation of a second gaseous stream comprising NH | 04-21-2011 |
20100301103 | METHOD AND APPARATUS FOR THE WELDING OF PIPES - Two pipes are arranged end to end, the pipes being shaped such that a groove is defined between the ends of the pipe. A plurality of welding torches are used to weld in the groove, such that at least some of the welding torches perform a first welding pass, the welding characteristics of the torches are adjusted and at least some of the welding torches are used to perform a second welding pass. At least one torch welds in a first sector in the first welding pass and a second sector in the second welding pass, the second sector being different to the first. The sectors might overlap or might not overlap. | 12-02-2010 |
20100217041 | ENHANCED PROCESS FOR THE SYNTHESIS OF UREA - An enhanced process is described for the synthesis of urea from ammonia and carbon dioxide, at a high pressure and temperature, with the formation of ammonium carbamate as intermediate, which includes a high pressure synthesis section, comprising at least one separation step by decomposition-stripping with ammonia of the non-converted ammonium carbamate, carried out in a vertical apparatus, commonly called stripper, characterized in that said step also comprises a feeding, in the lower part of said stripper, of a stream of CO | 08-26-2010 |
20100186881 | METHOD FOR FORMING A PROTECTIVE COAT ABOUT A CUTBACK BETWEEN PIPES FORMING PART OF AN UNDERWATER PIPELINE - A method of forming a protective coat about a cutback between pipes forming part of an underwater pipeline provides for laying a thermoplastic sheet on a supporting sheet; and winding the thermoplastic sheet and the supporting sheet about the cutback to join the thermoplastic sheet to the cutback. | 07-29-2010 |
20100166501 | DEVICE AND METHOD FOR THE TOWING OF UNDERWATER PIPELINES - Device and method for the towing of underwater pipelines ( | 07-01-2010 |
20100104371 | PREFABRICATION OF PIPE STRINGS ON BOARD OF PIPE-LAYING VESSELS - A method of laying pipeline from a vessel ( | 04-29-2010 |
20100080657 | UNDERSEA PIPE-LAYING - A monohull vessel for laying a pipeline includes tensioners | 04-01-2010 |
20100065614 | PIPE-JOINING METHOD AND APPARATUS FOR PRODUCING UNDERWATER PIPELINES, AND UNDERWATER-PIPELINE-LAYING VESSEL COMPRISING SUCH AN APPARATUS - A method of joining pipes ( | 03-18-2010 |
20100031609 | TRANSPORTATION OF SULPHUR FROM SOLID SULPHUR DEPOSITS, IN BLOCKS OF LARGE DIMENSIONS - Procedure for the low-risk and zero-emission transportation of sulphur from solid sulphur deposits, in blocks of large dimensions, characterized in that it comprises the formation of blocks of sulphur, having suitable dimensions for being moved, by means of water cut techniques and the wrapping of the blocks obtained in polyethylene sheets. | 02-11-2010 |
20100006627 | WELDING SYSTEM - A welding bug ( | 01-14-2010 |
20090260559 | Traction system for operating lines, in particular mooring and/or production lines, of a floating production unit - A traction system for operating lines, in particular mooring lines and/or production lines, of a floating production unit has a number of work stations distributed along the unit, at least at two ends of the unit, and engaged by respective operating lines; a main winch; and a cable transmission device having a duty cable connected to the main winch, and guide means for selectively routing the duty cable to each work station for attachment to a respective operating line; at least one auxiliary winch, having an auxiliary cable connectable to the duty cable, is used to unwind the duty cable off the main winch and run the duty cable, along paths defined by the guide members, into a number of positions close to respective work stations. | 10-22-2009 |
20090253942 | PROCESS FOR THE PRODUCTION OF ALKYL ETHERS BY THE ETHERIFICATION OF ISOBUTENE - Process for the production of alkyl ethers by the etherification of isobutene, contained in C | 10-08-2009 |
20090206060 | Arc Welding Torch And Method Of Using Same - The present invention relates to a welding torch that includes an electrode ( | 08-20-2009 |