With Anchoring Of Line Patents (Class 405/172)
  • Patent number: 9919774
    Abstract: Systems and methods for gas-up and cool down of LNG cargo tanks are described herein. A system includes a supply vessel located at a waterway location, a receiving vessel moored to the supply vessel, and a manifold conduit. The supply vessel is configured to transfer natural gas to the receiving vessel using the manifold conduit for gas-up and cool down of one or more LNG cargo tanks onboard the receiving vessel.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: March 20, 2018
    Assignee: Excelerate Energy Limited Partnership
    Inventors: Jonathan W. Cook, Mark K. Lane
  • Patent number: 9423251
    Abstract: An along-the-cable reciprocating motion control mechanism includes a moving platform, weight drop-off gear, weight release gear and trigger gear. The moving platform is set at a guide cable and can make reciprocating motion along the guide cable. A profiler is carried by the moving platform and the buoyancy of the moving platform carrying the profiler is greater than zero, the weight drop-off gear is set at the top of the guide cable and can drop a weight onto the moving platform within a predefined period, the weight release gear is provided on the moving platform, the trigger gear is set at the bottom of the guide cable, and when the moving platform carries a weight and descends to the bottom of the guide cable, the trigger gear touches the weight release gear to enable it to make a series of actions.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 23, 2016
    Assignee: OCEAN UNIVERSITY OF CHINA
    Inventors: Jiwei Tian, Wei Zhao, Ming Xu, Qingxuan Yang
  • Patent number: 9057168
    Abstract: An improved erosion and sediment control gabion multi-cell device, which includes a first end cell having four rigid upright walls, each wall having a plurality of flow openings therethrough; an interior space defined by the four walls, into which a water permeable material such as sand or rock material is placed; a second end cell of similar construction to the first end cell; a center cell engaged to and sharing a sidewall with each of the first and second cells, the center cell having flexible upright wire mesh front and rear walls to allow the multi-cell gabion to flex upward and downward or side to side to accommodate the terrain onto which the gabion is set in place; and a geotextile fabric liner positioned in each cell to help restrict flow of soil through the device.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: June 16, 2015
    Inventor: Louis I. Dugan, Jr.
  • Patent number: 9033615
    Abstract: The invention discloses a flexible offshore pipeline for oil and gas transportation stabilized on seabed by anchorage piers. It comprises cable (1) and flexible pipe (2) for oil and gas transportation, anchorage pier assemblies (3) to prevent the cable from drifting, and constraining assemblies (4) to restrict the flexible pipe (2) are sequentially provided on the cable. The anchorage pier assembly (3) comprises a gravity block (31) and the first clamping tool (32), and the first clamping tool (32) connects with the cable (1). The invention uses the flexible pipe (2) to build up offshore pipeline for oil and gas transportation, and anchorage pier assembly (3) and constraining assembly (4) for constraining the flexible pipe (2) are sequentially provided on the cable (1), which can restrict the flexible pipe, achieve reliable oil and gas transportation and prevent the flexible pipe drifting on the seabed. The pipeline system can protect the flexible pipe, are strong and reliable and the cost of pipeline is low.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: May 19, 2015
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Aihui Zhang, Dadi Zhang, Xiu Zhang
  • Patent number: 8985906
    Abstract: An assembly for connecting a flexible line (20) to an underwater installation (18). The line is extended between the underwater installation (18) and a surface installation (16). The line (20) includes (i) a surface end (22), a bottom end (28) (ii) a contact portion (26) near the bottom end and a floating portion (24) which extends between the contact portion (26) and the surface end (22). The contact portion (26) includes an angled part (40) that divides the contact portion (26) into a first part (36) and a second part. Then angled part (40) is moored to the bottom (10) at an anchoring point (42) located in the opposite direction from both the bottom end (28) and the floating portion (24).
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: March 24, 2015
    Assignees: Technip France, Advanced Production and Loading AS
    Inventor: Geir Olav Hovde
  • Patent number: 8950979
    Abstract: The present invention regards a method for laying pipelines on the seabed comprising the steps of attaching an end (2) of the pipeline (1) to a structure (10, 20), lowering the structure with the pipeline to the seabed, allowing the pipeline end to pivot relative the structure, measuring the inclination of the pipeline end relative to the seabed, modifying a pipe spool such that one end is given the same inclination of the end as the pipeline and that at least one part of the pipe spool will be resting on the seabed after connection, connecting the pipe spool to the pipeline. The invention also regards a pipeline installation device where at least a one side of a top structure is allowed to move relative a foundation structure.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: February 10, 2015
    Assignee: FMC Kongsberg Subsea AS
    Inventor: Jan Helge Hassel
  • Patent number: 8936413
    Abstract: Methods and apparatus for deploying pipeline from a vessel are described in relation to pipelines with installed accessories. One or more accessory support structures are installed at appropriate bedding locations on the seabed. In deploying pipeline from a vessel, an accessory is then attached at a position along the pipeline to correspond with the pre-installed accessory support structure bedding location. The pipeline and attached accessory are deployed and guided into engagement with the pre-installed accessory support structure on the seabed such that the pipeline is deployed substantially horizontally through the accessory support structure, and the accessory is supported by the pre-installed accessory support structure at the bedding location.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: January 20, 2015
    Assignee: Acergy France SA
    Inventors: Romain Mille, Brieuc Du Halgouet
  • Patent number: 8882390
    Abstract: This method comprises connecting a downstream point (40) of a pipe (24) to a buoy (26) and completely submerging the buoy (26). It comprises deploying in the body of water (12) an intermediate section (30) of the pipe (24) from the downstream point (40) to at least as far as an upstream point (38), anchoring the upstream point (38), and tensioning the intermediate section (30) to keep it vertical. The connecting step includes activating a traction unit (96) to raise the downstream point (40) on the buoy (26). During the connecting step, the buoy (26) is carried in the body of water (12) virtually exclusively by its own floatability.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: November 11, 2014
    Assignee: Technip France
    Inventors: Jeroen Remery, Romain Vivet, Christophe Defreslon, Ange Luppi
  • Patent number: 8882392
    Abstract: A method of anchoring a pipeline at a subsea location includes the steps of installing a first pile into the subsea location in a position away from the pipeline, affixing a first line to the pipeline and to the first pile, and tensioning the first line from the pipeline. A second pile is installed into the subsea location in a position away from the pipeline and away from the first pile. A second line is affixed to the pipeline and the second pile. The second line is tensioned from the pile. Each of the first and second lines extends on opposite sides of the pipeline at an acute angle relative to a longitudinal axis of the pipeline. Each of the pile is a suction pile having a tensioning mechanism thereon.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: November 11, 2014
    Assignee: Pinnacle Engineering Inc.
    Inventors: Peter A. Cruz, Terence F. Townend, Jeffrey A. Liggett
  • Publication number: 20140286709
    Abstract: 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.
    Type: Application
    Filed: September 28, 2012
    Publication date: September 25, 2014
    Applicant: SAIPEM S.p.A.
    Inventors: Diego Lazzarin, Paolo Dallona, Diego Magri
  • Patent number: 8734055
    Abstract: This method comprises connecting a downstream point (40) of a pipe (24) to a buoy (26) and completely submerging the buoy (26). It comprises deploying in the body of water (12) an intermediate section (30) of the pipe (24) from the downstream point (40) to at least as far as an upstream point (38), anchoring the upstream point (38), and tensioning the intermediate section (30) to keep it vertical. The height of the buoy (26) is less than 1.5 times its greatest transverse dimension. The method comprises moving the buoy (26) between a remote position and an installed position in line with an anchoring region, keeping the buoy (26) partly submerged on the surface (16) of the body of water.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 27, 2014
    Assignee: Technip France
    Inventors: Jeroen Remery, Romain Vivet, Christophe Defreslon, Ange Luppi
  • Patent number: 8708602
    Abstract: Systems and methods are described for controlling axial, lateral and/or vertical movements of subsea pipelines which reduce the need for expensive pipeline anchoring or other mitigation solutions. The pipeline is connected to a stabilizing structure generally adjacent to the pipeline using a plurality of load-bearing members attached to the pipeline and the stabilizing structure at a plurality of predetermined locations. Also described are systems and methods for monitoring operating parameters of the pipeline over time.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: April 29, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Antonio Carlos Falcao Critsinelis, Sid A. Mebarkia, Robert L. Foster, Jr., Michael J. Quinney
  • Publication number: 20140044488
    Abstract: Disclosed are apparatus, systems and methods for reducing displacement of a subsea conduit such as offshore hydrocarbon production pipeline, also referred to as pipeline walking or buckling, thus reducing the need for expensive pipeline anchoring or other mitigation solutions. A movement resistor adapted to be installed on a subsea conduit is provided having an inner portion adapted to receive and securely attach to a subsea conduit and at least one resistor portion adapted to resist induced forces. At least one movement resistor can be installed along the length of a subsea conduit.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 13, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio Carlos Falcao Critsinelis, Sid Ahmed Mebarkia, Daniel Christopher Kefford, Daria Igorevna Bougai, Dane Ryne Drew
  • Patent number: 8636447
    Abstract: An apparatus from repairing a subsea pipeline has a pile with a receptacle on a top surface thereof, a frame having a pair of pins extending outwardly on opposite side of the frame and received within the receptacle of the pile, a length of pipeline affixed to the frame. The pipe support is affixed to an end portion of the length of pipeline. The receptacle has a pair of slotted members extending upwardly from a top surface of the pile. Each of the slotted members has a tapered opening with a hole formed below and communicating with the tapered opening.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: January 28, 2014
    Assignee: Trendsetter Engineering, Inc.
    Inventor: Mario R. Lugo
  • Patent number: 8517044
    Abstract: A hydrocarbon transfer system includes a first and second floating structure and a substantially horizontal transfer pipe system submerged below water level interconnecting the floating structures. The transfer pipe system includes a flow line support member which is with at least one end attached to a connection head, a number of hydrocarbon flow lines being connected along the support member via carrier members. The connection head includes a cable or chain connected to one of the floating structures, connectors situated on the connection head or at the position of the support member near the connection head, which connectors are on one side in fluid connection with the flow lines and on the other side in fluid connection with a flexible flow line extending from the connection head to the floating structure.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: August 27, 2013
    Assignee: Single Buoy Moorings Inc.
    Inventors: Jack Pollack, Paul Brown, Lionel Fromage, Mamoun Naciri
  • Publication number: 20130170914
    Abstract: Disclosed are systems and methods for stabilizing a subsea pipeline such that movements of the pipeline in the axial, lateral and/or vertical directions are restrained. The pipeline is connected to a stabilizing structure generally adjacent to the pipeline using one or more load-bearing members attached to the pipeline and the stabilizing structure at one or more predetermined locations. Also disclosed are systems and methods for monitoring operating parameters of the pipeline over time.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Applicant: CHEVRON U.S.A. Inc.
    Inventors: Antonio Carlos Falcao Critsinelis, Sid A. Mebarkia, Robert L. Foster, JR., Michael J. Quinney
  • Publication number: 20120298373
    Abstract: The disclosure relates to an assembly including a supporting buoy and an anchoring assembly (28) comprising a base (100) attached to the bed (12) of the expanse of water. The assembly comprises a flexible anchoring line (30) connecting the anchoring assembly (28) to the supporting buoy (26). The anchoring line (30) comprises a lower section (84) made of chain links (92). The anchoring assembly (28) comprises a device (110) for guiding the lower section (84). The lower section (84) is movably mounted in the guide device (110) relative to the base (100), between an extended configuration and a contracted configuration, and a locking member (114) which can be released from the anchor line (30) on the anchoring assembly (28).
    Type: Application
    Filed: January 4, 2011
    Publication date: November 29, 2012
    Inventors: Ange Luppi, Philippe Espinasse
  • Publication number: 20120263542
    Abstract: An assembly for connecting a flexible line (20) to an underwater installation (18). The line is extended between the underwater installation (18) and a surface installation (16). The line (20) includes (i) a surface end (22), a bottom end (28) (ii) a contact portion (26) near the bottom end and a floating portion (24) which extends between the contact portion (26) and the surface end (22). The contact portion (26) includes an angled part (40) that divides the contact portion (26) into a first part (36) and a second part. Then angled part (40) is moored to the bottom (10) at an anchoring point (42) located in the opposite direction from both the bottom end (28) and the floating portion (24).
    Type: Application
    Filed: November 30, 2010
    Publication date: October 18, 2012
    Inventor: Geir Olav Hovde
  • Publication number: 20120107050
    Abstract: The invention relates to a pipeline assembly and a method of installing a pipeline assembly, wherein the pipeline extends at least in part on a seabed and curves upwardly from the seabed along a curved section thereof, the pipeline extending toward a delivery end provided at the water surface, wherein a connecting device connects the pipeline at a coupling point to an anchoring device at the seabed for preventing the coupling point from moving upward. The invention further relates to a pipeline device comprising at least two pipeline assemblies which are interconnected at a substantial distance from the seabed.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 3, 2012
    Applicant: HEEREMA MARINE CONTRACTORS NEDERLAND B.V.
    Inventors: Dirk Rients WOLBERS, Ton COPPENS
  • Patent number: 8152411
    Abstract: Guide arrangement for marine risers, in particular for offshore oil and gas operations. The guide arrangement has at least one guide structure (21, 22) for a length of riser, a frame assembly (10, 10A-D) for supporting said guide structure, anchor means (11, 12) at the seabed, tether means (13, 14) connecting said frame assembly to said anchor means, and a buoyancy element (1) for keeping said guide structure (21, 22) at a desired level in the sea during operation. The guide structure (21, 22) is pivotably supported by said frame assembly (10, 10A-D) with a pivot axis (21P, 22P) being substantially horizontal.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: April 10, 2012
    Assignee: Nexans
    Inventors: Torfinn Ottesen, Jan Arne Häll
  • Patent number: 8123437
    Abstract: The invention relates to a pipeline assembly and a method of installing a pipeline assembly, wherein the pipeline extends at least in part on a seabed and curves upwardly from the seabed along a curved section thereof, the pipeline extending toward a delivery end provided at the water surface, wherein a connecting device connects the pipeline at a coupling point to an anchoring device at the seabed for preventing the coupling point from moving upward. The invention further relates to a pipeline device comprising at least two pipeline assemblies which are interconnected at a substantial distance from the seabed.
    Type: Grant
    Filed: October 9, 2006
    Date of Patent: February 28, 2012
    Assignee: Heerema Marine Contractors Nederland B.V.
    Inventors: Dirk Rients Wolbers, Ton Coppens
  • Patent number: 8100606
    Abstract: A stabilization system for stabilizing a submarine pipeline supported on a seabed below water level. The seabed is inclined in that it incorporates a sloping section extending between an upper section and a lower section. The stabilization system includes an upper anchoring mechanism for anchoring the pipeline to the upper seabed section adjacent the top end of the sloping section and the other being a lower anchoring mechanism for anchoring the pipeline to the lower seabed section adjacent the bottom end of the sloping seabed section. A buoyancy mechanism is provided along the extent of the pipeline section between the two anchoring mechanisms. The buoyancy provided by the buoyancy mechanism maintains the pipe section above and out of contact with the sloping seabed section.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: January 24, 2012
    Assignee: JP Kenny Pty Ltd
    Inventors: Philip Gwyn Brown, Gordon Charles Cowper
  • Patent number: 8092119
    Abstract: A pipeline buoyancy control assembly is operable to simultaneously retain a plurality of pipelines against buoyancy forces. Respective ends of two retaining straps corresponding to two respective pipelines engage a tie-down member of a single control assembly. The retaining straps are placed over the respective pipelines and other ends of the retaining straps are attached to additional control assemblies. Further, stresses exerted on the retaining straps when the pipelines are subjected buoyancy forces are minimized by the unique structure of the tie-down member and the manner by which the retaining straps attached thereto.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: January 10, 2012
    Assignee: Hubbell Incorporated
    Inventor: Shawn D Downey
  • Publication number: 20120003048
    Abstract: A device is described for a foundation to be placed in a sea bed, comprising a housing-formed, downwardly open, coat-forming construction set up for placing in the sea bed, said construction comprises a top part, and the top part comprises an extended hollow body (140) that stretches a distance into the inside of the construction. The invention is characterised in that the length of the inner pipe is shorter or longer than the length of the coat. When the inner pipe is shorter, its length is of the order of 10-90% of the length of the skirt 10, preferably 25 to 60%, and most preferred 50%. When the inner pipe is longer, its length is more than 100% and up to 300% of the length of the outer coat (10), preferably 150 to 200% and most preferred 300%. A method and different applications are also described.
    Type: Application
    Filed: December 14, 2009
    Publication date: January 5, 2012
    Inventors: Øyvind Hosøy, Eldar Lien
  • Patent number: 8087848
    Abstract: A method and apparatus for deploying a plurality of seismic sensor units into a water column is described. The method includes providing a length of flexible cable from a cable storage device disposed on a vessel to a powered sheave, the cable having a plurality of spaced apart attachment points, routing the cable from the powered sheave to pass adjacent a workstation disposed on the vessel, deploying a free end of the cable into the water column while increasing the motion of the vessel to a first speed, operating the vessel at the first speed while providing a deployment rate of the cable at a second speed, the second speed being greater than the first speed, decreasing the second speed of the cable as an attachment point approaches the work station, and attaching at least one of the plurality of seismic sensor units to the attachment point at the workstation.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: January 3, 2012
    Assignee: Fairfield Industries Incorporated
    Inventors: James N. Thompson, Jerry L. Laws, Larry E. Berges
  • Patent number: 8007203
    Abstract: A method and an installation for connecting a rigid submarine pipe and a flexible submarine pipe. The rigid pipe terminates in a free connection end. The flexible pipe has a flow-line portion and a suspended portion. The flow-line portion has an input end connected to the free connection end. The installation comprises an anchoring device to hold the flow-line portion anchored at an anchor point and to allow the flow-line portion to form an undulation. The anchoring device is suitable for holding the anchor point at a distance and close to the free connection end to form the undulation between the anchor point and the free connection end.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: August 30, 2011
    Assignee: Technip France
    Inventors: Philippe Espinasse, Jean-Pascal Biaggi
  • Patent number: 7976246
    Abstract: A system for deploying a deepwater mooring spread from a floating vessel using at least two cranes each having a main block, a deepwater deployment system connected to at least one of the cranes, a reel drive, a structure for supporting the reel drive and a hang-off, a plurality of neutral buoyancy polymer lines deployable by the reel drive connectable to each other and the hang-off with chains and/or with remote operated vehicle connectors, at least two suction piles with anchor chains, and at least two buoys, one for each suction pile for connecting to the neutral buoyancy polymer lines.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: July 12, 2011
    Assignee: Kahn Offshore B.V.
    Inventor: Richard L. Krabbendam
  • Patent number: 7942608
    Abstract: A flowline for hydrocarbon which is capable of being reeled and which is unreeled for being laid on the seabed using the reeled lay method is comprised of successive pipe sections having opposing ends which are joined by an anchor collar that is butt welded to the opposing ends. The pipe sections have a jacket on the exterior of the pipe sections, but the pipe sections are able to be reeled. Anchor collars are affixed by butt welding between the ends of adjacent pipe sections. Each anchor collar has a fixture or protrusion radially outward which has an outer diameter less than or at least not more than the outer diameter of the pipe section jacket. The flowline has the same inner diameter at the pipe sections and the collar, and the pipe has the same outer diameter as the collar, while the protrusion protrudes outward from the exterior of the collar.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: May 17, 2011
    Assignee: Technip France
    Inventors: Antoine Bastard, Kevin Legris, Julie Le Pocreau
  • Publication number: 20110033244
    Abstract: A hydrocarbon transfer system includes a first and second floating structure and a substantially horizontal transfer pipe system submerged below water level interconnecting the floating structures. The transfer pipe system includes a flow line support member which is with at least one end attached to a connection head, a number of hydrocarbon flow lines being connected along the support member via carrier members. The connection head includes a cable or chain connected to one of the floating structures, connectors situated on the connection head or at the position of the support member near the connection head, which connectors are on one side in fluid connection with the flow lines and on the other side in fluid connection with a flexible flow line extending from the connection head to the floating structure.
    Type: Application
    Filed: January 28, 2009
    Publication date: February 10, 2011
    Applicant: SINGLE BUOY MOORINGS INC.
    Inventors: Jack Pollack, Paul Brown, Lionel Fromage, Mamoun Naciri
  • Patent number: 7866398
    Abstract: An underwater termination assembly for use with a subsea system such as a well tree, comprises a construction having first and second limbs substantially at a right-angle to each other, which construction may be lowered having an umbilical connected to one of the limbs so that said one of the limbs sits on the bed of a body of water.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: January 11, 2011
    Assignee: Vetco Gray Controls Limited
    Inventors: Richard K. O. Barratt, Thomas D. Taylor
  • Patent number: 7862256
    Abstract: A pipeline weighting device to straddle the longitudinal axis of a pipeline, a method of filling the device, and a method of weighting a pipeline with the device. The pipeline weighting device is formed of a plurality of interconnected, generally tubular-shaped lobes arranged to straddle the pipeline in a balanced manner along the longitudinal axis of the pipeline. The lobes are formed of a flexible, water permeable fabric to hold weighting fill material. Each lobe has opposed and closed longitudinal side edges and opposed ends, one end being a closed end, and the other end forming an open or partially open filling end.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: January 4, 2011
    Assignee: CRC-Evans Canada Ltd.
    Inventors: Ian Sprague, Charles Frederick McKay
  • Patent number: 7794177
    Abstract: A subsea system for securing an end portion of a pipeline includes a subsea foundation. The foundation has a lower portion located below the sea floor and an upper portion extending above the sea floor. The subsea foundation has a receptacle formed in the upper portion. The system includes a base frame that lands on the subsea foundation. The base frame has a track formed therein. A stab is hingedly mounted to the base frame. The stab stabs into the receptacle to secure the base frame to the subsea foundation. A sliding mechanism is carried by the base frame and moves along the track. The sliding mechanism is connected to a segment of the pipeline extending along the sea floor. A terminal assembly for an end portion of a pipeline and a method for securing an end portion of a pipeline are also included herein.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: September 14, 2010
    Inventor: Kristen DeLack
  • Publication number: 20100189514
    Abstract: A flexible bag-type pipeline weight, configured to straddle a pipeline, has internal tie means to prevent excessive bulging of the weight after being filled with ballasting material, thus facilitating installation in narrow trenches. Built-in loading loops facilitate filling the weight with ballasting material without need for special loading equipment. The bag-type pipeline weight is formed with a pair of leg sections on either side of a Central, pipeline-receiving recess. Once filled with ballast, the legs remain separated, thus facilitating installation on a pipeline. The filled pipeline weight is also freestanding and stable for purposes of transport and storage prior to installation. Hoisting slings facilitate lifting and manipulation of loaded pipeline weights without the need for spreader bars.
    Type: Application
    Filed: November 26, 2009
    Publication date: July 29, 2010
    Inventors: Donald O. GUNN, Lyle Connley REID
  • Patent number: 7677837
    Abstract: A device for transferring fluid between two floating supports anchored to the sea bottom, having a rigid central undersea pipe installed below the surface with its ends each being connected to respective ones of two supports via a flexible hose. The main portion of the rigid central pipe includes or co-operates with buoyancy elements such that the central pipe adopts, in a quasi-static rest state, a configuration of an arch, preferably following a curve such that the angles between the half-lines of the axes of the rigid pipe and the horizontal half-lines at each of its ends extending towards the other end present absolute values of less than 20° and the flexible hoses present lengths and curvatures such that variations in the curvatures of the flexible hoses are suitable for compensating the movements of the floating supports.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: March 16, 2010
    Assignee: Saipem S.A.
    Inventors: Francois-Regis Pionetti, Midir Rivoal
  • Patent number: 7654773
    Abstract: The disclosure provides a system and method for installing subsea equipment, such as a pipeline and equipment associated therewith in a target area, generally having restricted overhead access. An anchor can be installed in the seabed and can include one or more sheaves. A pipeline can be provided, which can include related equipment and/or one or more coupling devices situated remotely from the anchor relative to the target area. A winch wire can be provided and is adapted to be directly or indirectly coupled across at least a portion of the target area to the pipeline. A transfer sling having a pull wire and an initiation wire can be coupled between the winch wire and pipeline to assist the winch wire pulling the pipeline into the target area and transferring a pipeline force from the sheave to the anchor independent of the sheave.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: February 2, 2010
    Assignee: Technip France
    Inventors: Antoine Bastard, Kevin Legris, Julie LePocreau
  • Publication number: 20090269141
    Abstract: There is disclosed a floating system positioned in a body of water having a water bottom, the system comprising a host member floating in the water; an elongated underwater line structure, comprising a top connected to the host; a bottom extending to the seabed and adapted to connect to a flowline lying on the seabed; a first portion of the line structure being shaped concave upward; a second portion of the line structure being shaped concave upward; and a transition segment between being shaped concave downward, the transition segment located between the first portion and the second portion.
    Type: Application
    Filed: September 19, 2007
    Publication date: October 29, 2009
    Inventors: You Son LI, George Rodenbusch, Heping Zhang, Jane Qing Zhang
  • Publication number: 20090238647
    Abstract: The present invention is directed to methods for coupling seismometers and seismic sources to the ocean floor that results in improved seismic data quality and repeatability for reservoir management and seismic monitoring activities. Piles are configured with a coupling device and permanently installed on the ocean floor. The seismometers or seismic sources are acoustically coupled to the piles on the ocean floor via the coupling device. The pile, seismometer and seismic source may be surface treated with a material that releases divalent cations to enhance both the acoustic coupling and the load holding capacity of the pile. The pile is permanently imbedded into the seabed while the expensive and high-maintenance seismometers and seismic sources are redeployed on the piles as needed.
    Type: Application
    Filed: January 27, 2009
    Publication date: September 24, 2009
    Inventors: Neil Ernest Delfino, Joshua Ronen, Cung Khac Vu
  • Publication number: 20090202305
    Abstract: A flowline for hydrocarbon which is capable of being reeled and which is unreeled for being laid on the seabed using the reeled lay method is comprised of successive pipe sections having opposing ends which are joined by an anchor collar that is butt welded to the opposing ends. The pipe sections have a jacket on the exterior of the pipe sections, but the pipe sections are able to be reeled. Anchor collars are affixed by butt welding between the ends of adjacent pipe sections. Each anchor collar has a fixture or protrusion radially outward which has an outer diameter less than or at least not more than the outer diameter of the pipe section jacket. The flowline has the same inner diameter at the pipe sections and the collar, and the pipe has the same outer diameter as the collar, while the protrusion protrudes outward from the exterior of the collar.
    Type: Application
    Filed: February 8, 2008
    Publication date: August 13, 2009
    Inventors: Antoine Bastard, Kevin Legris, Julie Le Pocreau
  • Publication number: 20090162146
    Abstract: The disclosure provides a system and method for installing subsea equipment, such as a pipeline and equipment associated therewith in a target area, generally having restricted overhead access. An anchor can be installed in the seabed and can include one or more sheaves. A pipeline can be provided, which can include related equipment and/or one or more coupling devices situated remotely from the anchor relative to the target area. A winch wire can be provided and is adapted to be directly or indirectly coupled across at least a portion of the target area to the pipeline. A transfer sling having a pull wire and an initiation wire can be coupled between the winch wire and pipeline to assist the winch wire pulling the pipeline into the target area and transferring a pipeline force from the sheave to the anchor independent of the sheave.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: TECHNIP FRANCE
    Inventors: Antoine BASTARD, Kevin LEGRIS, Julie LePOCREAU
  • Publication number: 20090092447
    Abstract: A block and pad unit for use in forming a seabed mat includes a concrete block having an upper surface, a lower surface and at least four sides extending between the upper and lower surfaces. An opening extends from the upper surface to the lower surface of the block. An abrasive resistant pad is attached to one of the upper surface or the lower surface. The pad includes a base having a lower side adjacent the block and an upper side facing away from the block, an opening aligned with the opening of the block, and a plurality of dome-shaped mounds extending integrally upward from the upper side of the base and distributed about a periphery of the opening of the pad.
    Type: Application
    Filed: October 8, 2007
    Publication date: April 9, 2009
    Applicant: Armortec, Inc.
    Inventor: Joseph V. Salerno
  • Publication number: 20080310922
    Abstract: A pipeline buoyancy control assembly is operable to simultaneously retain a plurality of pipelines against buoyancy forces. Respective ends of two retaining straps corresponding to two respective pipelines engage a tie-down member of a single control assembly. The retaining straps are placed over the respective pipelines and other ends of the retaining straps are attached to additional control assemblies. Further, stresses exerted on the retaining straps when the pipelines are subjected buoyancy forces are minimized by the unique structure of the tie-down member and the manner by which the retaining straps attached thereto.
    Type: Application
    Filed: June 12, 2007
    Publication date: December 18, 2008
    Inventor: Shawn D. Downey
  • Publication number: 20080286050
    Abstract: A subsea system for securing an end portion of a pipeline includes a subsea foundation. The foundation has a lower portion located below the sea floor and an upper portion extending above the sea floor. The subsea foundation has a receptacle formed in the upper portion. The system includes a base frame that lands on the subsea foundation. The base frame has a track formed therein. A stab is hingedly mounted to the base frame. The stab stabs into the receptacle to secure the base frame to the subsea foundation. A sliding mechanism is carried by the base frame and moves along the track. The sliding mechanism is connected to a segment of the pipeline extending along the sea floor. A terminal assembly for an end portion of a pipeline and a method for securing an end portion of a pipeline are also included herein.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Applicant: CHEVRON U.S.A. INC.
    Inventor: Kristen DeLack
  • Patent number: 7360968
    Abstract: An anchoring method and device, for anchoring a pipeline to a seabed. The pipeline may extend from a well which is located on a seabed to a floating platform. Tension forces which are exerted on the pipeline by the platform are diverted into the seabed by the anchoring device.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: April 22, 2008
    Assignee: Heerema Marine Contractors Nederland B.V.
    Inventor: Cornelis van Zandwijk
  • Patent number: 7344338
    Abstract: A pipeline ballast has at least two sacks adapted to straddle a pipeline. Permeable sacks filled with inert high density aggregate such as barite uses less dry weight of aggregate to restrain buoyancy. Preferably a top sack and two pairs of side sacks connected to either side of the top sack, which when cinched, conform to the pipeline. Preferably each side sack is a pair of sacks which are flexibly hinged for more efficient loading onto the pipeline and for better conforming to the pipeline when cinched. Preferably a one piece cinching strap has two loops spaced thereon hook and loop type fasteners at the loose ends for securing together once cinched. The cinching strap is wrapped about the pipeline ballast and the lifting loops are positioned low on either side of the pipeline and lifted tangentially away from each other before the loose ends of the strap are secured to each other.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: March 18, 2008
    Assignee: Blackfire Exploration Ltd.
    Inventors: Bradley C. Willis, W. Brent Willis, H. Craig Willis
  • Patent number: 7287936
    Abstract: A shallow water riser extending between a seabed connection and a floating support connection and of a length through the shallow water to be in wave form with at least one and, as illustrated, two wave areas in contact with the seabed. A protective sheath optionally surrounds the riser at the contact regions with the seabed. The upraised wave portions are supported by float elements.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: October 30, 2007
    Inventors: Jean Luc Streiff, Jeroen Remery, Mathieu Boisne
  • Patent number: 7246971
    Abstract: A stabilization system (10) for a section of submarine pipeline (11) comprising an end restraint (15) at each end of the section of pipeline and intermediate restraints (20) between the two end restraints (15) for limiting lateral movement of the pipeline (11) at the location of the restraints (15, 20). Each end restraint (15) is adapted to be secured to the pipeline (11) to transfer axial tension generated by lateral movement of the pipeline (11) to the seabed or ground on which the end restraint is installed. Each restraint (15, 20) comprises a pair of restraint faces (21) spaced apart to define a gap (23) through which the pipeline (11) can extend. Each restraint face (21) is configured to control curvature of the pipeline (11) during lateral movement thereof. A restraint device and a method of stabilizing a submarine pipeline is also disclosed and claimed.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: July 24, 2007
    Assignee: J P Kenny Pty Limited
    Inventors: Barry Errol Ellis, Antonino John Fogliani
  • Patent number: 7241075
    Abstract: A subsea cable (3) designed to extend from a floating structure (1) on the sea surface down to a subsea structure (2) on the sea floor with a first portion (3a) extending from the floating structure (1) to the sea floor and a second portion (3b) laid in or on the sea floor has an outer sheath and cables and/or conduits inside said outer sheath. The second portion (3b) of the subsea cable (3) is provided with at least one disc-shaped anchor (4) attached to the subsea cable (3b) with clamps. The at least one disc-shaped anchor (4) makes movement of the second portion (3b) more difficult.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: July 10, 2007
    Assignee: Nexans
    Inventors: Torfinn Ottesen, Alexander Vogt
  • Patent number: 7104728
    Abstract: A method for deploying and retrieving seafloor equipment modules is disclosed. A conveyor has a fixed end and a free end. The conveyor is deployed into a body of water until the free end reaches, or is proximate to, the seafloor. The conveyor is dragged through the water. The equipment modules are slidably attached to the conveyor. The equipment modules slide along the conveyor to the seafloor, where the equipment modules engage the seafloor and are secured at a fixed position.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: September 12, 2006
    Assignee: Compagnie Generale de Geophysique
    Inventors: Francois Luc, Robert Dowle
  • Patent number: 7073978
    Abstract: A lightweight catenary system for deepsea operations in which a lightweight flexible pipe such as disclosed in U.S. Pat. No. 6,491,779 is suspended in seawater from a vessel or platform, and having a positive or nearly positive buoyancy, and which is stabilized by disposing weight in proximity to or attached to the lower portion of the pipe at or near the seabed, whereby the weight and costs of supporting heavy pipe in offshore operations is reduced or eliminated.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: July 11, 2006
    Assignee: Deepflex, Inc.
    Inventor: Michael J. Bryant
  • Patent number: 7066686
    Abstract: Method intended for automatic control of an underwater pipe for connecting the lower end of the pipe to a wellhead, wherein the following stages are carried out: Stage 1: determining a mathematical model expressing the position of the lower end of the pipe as a function of the position of the upper end of the pipe, Stage 2: determining a reference path leading to the wellhead, Stage 3: from the mathematical model determined in stage 1, determining control laws allowing to control the path of the lower end of the pipe, Stage 4: applying determined motions to the upper end of the pipe so that the position of the lower end is as close as possible to the reference path determined in stage 2.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: June 27, 2006
    Assignee: Institut Francais du Petrole
    Inventors: Rida Sabri, Claude Putot, Francis Biolley, Cédric Le Cunff, Yann Creff, Jean Levine