Patents by Inventor Arnbjorn Joensen
Arnbjorn Joensen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12055257Abstract: A method of dewatering a subsea pipeline bundle assembly before lifting the assembly from the seabed and an elongate carrier pipe comprising at least one internal fall that slopes downwardly towards a drainage outlet and at least one venturi formation that is aligned with the drainage outlet. The method comprises adding discrete buoyancy to the elongate carrier pipe that elevates the carrier pipe disposed between drainage outlets of the assembly. Each elevated portion defines inclined falls that slope downwardly in opposed longitudinal directions toward the respective outlets. Water within the carrier pipe drains down the falls toward the outlets. Injecting a dewatering fluid into the carrier pipe promotes expulsion of water from the pipe through the outlets by downward displacement of the water. Drainage may be assisted by a venturi effect driven by accelerating the flow of the dewatering fluid at a location in line with an outlet.Type: GrantFiled: December 14, 2021Date of Patent: August 6, 2024Assignee: SUBSEA 7 LIMITEDInventors: Arnbjorn Joensen, Nwabueze Samuel Ogbodo, Shona Margaret Manson, Emma Claire Taylor, Dwayne Hewitt Hopkins, John Joseph Ryan
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Publication number: 20230182868Abstract: A structure such as a pipeline bundle is pulled into or through shallow water, for example when launching the structure, by applying a tensile pulling force to the structure through rigging that extends to the structure from a winch of a first vessel. The pulling force is at least partially reacted through a pennant line that extends from the first vessel to a second vessel and that hangs between the first and second vessels to engage the seabed soil frictionally. The vessels may also self-propel to contribute their thrust to the pulling force. The pennant line includes a clump weight such as a bundle of chains that can be repositioned easily for additional pulls by being lifted between the vessels before being lowered to the seabed at a new location.Type: ApplicationFiled: April 28, 2021Publication date: June 15, 2023Inventors: Arnbjorn Joensen, Nwabueze Samuel Ogbodo
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Publication number: 20220356978Abstract: A method of dewatering a subsea pipeline bundle assembly before lifting the assembly from the seabed comprises adding discrete buoyancy to an elongate carrier pipe of the assembly. The buoyancy elevates one or more portions of the carrier pipe disposed between drainage outlets of the assembly. Each elevated portion defines inclined falls that slope downwardly in opposed longitudinal directions toward the respective outlets. Water within the carrier pipe drains down the falls toward the outlets. Injecting a dewatering fluid into the carrier pipe promotes expulsion of water from the pipe through the outlets by downward displacement of the water. Drainage can be assisted by a venturi effect driven by accelerating the flow of the dewatering fluid at a location in line with an outlet.Type: ApplicationFiled: December 14, 2021Publication date: November 10, 2022Inventors: Arnbjorn Joensen, Nwabueze Samuel Ogbodo, Shona Margaret Manson, Emma Claire Taylor, Dwayne Hewitt Hopkins, John Joseph Ryan
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Patent number: 9162734Abstract: A method of installing a production buoy at a subsea anchoring location is disclosed. The method includes floating a production buoy over a subsea anchoring location. Then, hanging at least a tether off the production buoy such that the or each tether extends from the production buoy towards the subsea anchoring location occurs. The method includes submerging the production buoy to a depth which allows connection of the or each tether to the subsea anchoring location. An apparatus suitable for use with this method is also provided.Type: GrantFiled: June 28, 2011Date of Patent: October 20, 2015Assignee: Subsea 7 LimitedInventors: Julek Romuald Tomas, Arnbjorn Joensen
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Publication number: 20150167268Abstract: There is provided a method and apparatus for lowering and/or raising a load or structure to or from the bed of a body of water. The apparatus comprises a buoyancy apparatus configured to be coupled to a load, and having positive buoyancy sufficient to lift the load. At least one receptacle is provided on the apparatus for receiving a control weight lowered from a vessel to lower or raise the assembly. The lowering method includes forming an assembly from a buoyancy apparatus and a load and submerging the assembly to a position at a first height above the bed. In a preferred embodiment the assembly is submerged by a clump weight tow system. A control weight is deployed from a vessel to the assembly to overcome the positive buoyancy of the assembly and thereby lower the load from the first height to the bed. The raising method reverses the steps of the lowering method.Type: ApplicationFiled: February 23, 2015Publication date: June 18, 2015Inventors: Arnbjorn Joensen, Samuel David Irvine Paul
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Patent number: 8992127Abstract: There is provided a method and apparatus for lowering and/or raising a load or structure to or from the bed of a body of water. The apparatus comprises a buoyancy apparatus configured to be coupled to a load, and having positive buoyancy sufficient to lift the load. At least one receptacle is provided on the apparatus for receiving a control weight lowered from a vessel to lower or raise the assembly. The lowering method includes forming an assembly from a buoyancy apparatus and a load and submerging the assembly to a position at a first height above the bed. In a preferred embodiment the assembly is submerged by a clump weight tow system. A control weight is deployed from a vessel to the assembly to overcome the positive buoyancy of the assembly and thereby lower the load from the first height to the bed. The raising method reverses the steps of the lowering method.Type: GrantFiled: October 15, 2009Date of Patent: March 31, 2015Assignee: Subsea Deployment Systems LimitedInventors: Arnbjorn Joensen, Samuel David Irvine Paul
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Patent number: 8967912Abstract: A method of installing a production buoy at a subsea anchoring location is disclosed. The method includes floating a production buoy over a subsea anchoring location. Then, hanging at least a tether off the production buoy such that the or each tether extends from the production buoy towards the subsea anchoring location occurs. The method includes submerging the production buoy to a depth which allows connection of the or each tether to the subsea anchoring location. An apparatus suitable for use with this method is also provided.Type: GrantFiled: September 14, 2012Date of Patent: March 3, 2015Assignee: Subsea 7 LimitedInventors: Julek Romuald Tomas, Arnbjorn Joensen
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Patent number: 8905143Abstract: A riser configuration having a rigid riser portion and a flexible riser portion. The riser configuration also includes a subsea buoy across which the riser portions are connected. Buoyancy means are mounted on the flexible riser portion.Type: GrantFiled: November 25, 2010Date of Patent: December 9, 2014Assignee: Subsea 7 LimitedInventors: Arnbjorn Joensen, Julek Romuald Tomas
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Publication number: 20130309020Abstract: A method of installing a production buoy at a subsea anchoring location is disclosed. The method includes floating a production buoy over a subsea anchoring location. Then, hanging at least a tether off the production buoy such that the or each tether extends from the production buoy towards the subsea anchoring location occurs. The method includes submerging the production buoy to a depth which allows connection of the or each tether to the subsea anchoring location. An apparatus suitable for use with this method is also provided.Type: ApplicationFiled: September 14, 2012Publication date: November 21, 2013Applicant: SUBSEA 7 LIMITEDInventors: Arnbjorn Joensen, Julek Romuald Tomas
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Publication number: 20130299179Abstract: A riser configuration having a rigid riser portion and a flexible riser portion. The riser configuration also includes a subsea buoy across which the riser portions are connected. Buoyancy means are mounted on the flexible riser portion.Type: ApplicationFiled: November 25, 2010Publication date: November 14, 2013Inventors: Arnbjorn Joensen, Julek Romuald Tomas
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Publication number: 20130295802Abstract: A method of installing a production buoy at a subsea anchoring location is disclosed. The method includes floating a production buoy over a subsea anchoring location. Then, hanging at least a tether off the production buoy such that the or each tether extends from the production buoy towards the subsea anchoring location occurs. The method includes submerging the production buoy to a depth which allows connection of the or each tether to the subsea anchoring location. An apparatus suitable for use with this method is also provided.Type: ApplicationFiled: June 28, 2011Publication date: November 7, 2013Inventors: Julek Romuald Tomas, Arnbjorn Joensen
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Publication number: 20110164926Abstract: There is provided a method and apparatus for lowering and/or raising a load or structure to or from the bed of a body of water. The apparatus comprises a buoyancy apparatus configured to be coupled to a load, and having positive buoyancy sufficient to lift the load. At least one receptacle is provided on the apparatus for receiving a control weight lowered from a vessel to lower or raise the assembly. The lowering method includes forming an assembly from a buoyancy apparatus and a load and submerging the assembly to a position at a first height above the bed. In a preferred embodiment the assembly is submerged by a clump weight tow system. A control weight is deployed from a vessel to the assembly to overcome the positive buoyancy of the assembly and thereby lower the load from the first height to the bed. The raising method reverses the steps of the lowering method.Type: ApplicationFiled: October 15, 2009Publication date: July 7, 2011Applicant: SUBSEA DEPLOYMENT SYSTEMS LIMITEDInventors: Arnbjorn Joensen, Samuel David Irvine Paul