Patents Assigned to Wellstream International Limited
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Patent number: 9359829Abstract: A riser assembly and method of producing a riser assembly for transporting fluids from a sub-sea location is disclosed. The assembly includes a riser comprising at least one segment of flexible pipe, the riser having a first end for connection to a floating facility and a further end; at least one buoyancy element for enabling a portion of the riser to form a hog bend configuration and an adjacent portion of the riser to form a sag bend configuration; and a weight element provided between the first end of the riser and the at least one buoyancy element, such that in an initial deployment position, the weight element is provided at least partially in the sag bend portion of the riser.Type: GrantFiled: October 18, 2012Date of Patent: June 7, 2016Assignee: Wellstream International LimitedInventors: Zhimin Tan, Yanqiu Zhang, Yucheng Hou
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Publication number: 20150144351Abstract: A riser or jumper assembly for transporting production, exportation or injection fluids is disclosed as is a method for providing buoyancy to such an assembly. The riser or jumper assembly includes a first segment of flexible pipe comprising a portion of flexible pipe body and a first and second end fitting, a further segment of flexible pipe comprising a portion of flexible pipe body and a first and second end fitting and an intermediate segment of flexible pipe comprising a portion of flexible pipe body and a first and second end fitting and at least one buoyancy element.Type: ApplicationFiled: October 3, 2014Publication date: May 28, 2015Applicant: Wellstream International LimitedInventors: Judimar de Assis Clevelario, Fabio de Souza Pires, Claudio Cezario de Barros, Rafael Goes
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Publication number: 20150136264Abstract: A flexible pipe body and method of manufacturing a flexible pipe body are disclosed. The flexible pipe body includes a fluid retaining layer for preventing ingress of fluid into the flexible pipe body from an environment outside of the flexible pipe body; and a fibre element arranged generally along a longitudinal axis of the fluid retaining layer.Type: ApplicationFiled: October 24, 2012Publication date: May 21, 2015Applicant: Wellstream International LimitedInventors: Gary Michael Holland, Geoffrey Stephen Graham, Neville Dodds, Upul Shanthilal Fernando, Phillip Michael Hunter Nott, George Henry Frank Hatherley, Mark Anthony Laycock
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Publication number: 20150060079Abstract: A riser assembly and method of supporting a flexible pipe are disclosed. The assembly includes a riser; at least one buoyancy compensating element attached to the riser for providing positive, negative or neutral buoyancy to the riser; and a tethering element connecting a first point of the riser with a further point of the riser so as to form a hog bend or a sag bend in the riser.Type: ApplicationFiled: September 4, 2013Publication date: March 5, 2015Applicant: Wellstream International LimitedInventors: Richard Alasdair Clements, Yanqiu Zhang, Zhimin Tan, Yucheng Hou, Jiabei Yuan
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Publication number: 20150007903Abstract: A flexible pipe body and method of producing a flexible pipe body are disclosed.Type: ApplicationFiled: November 12, 2012Publication date: January 8, 2015Applicant: Wellstream International LimitedInventor: Richard Alasdair Clements
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Publication number: 20140356073Abstract: A connector assembly, riser assembly and method of producing a connector assembly are disclosed. The connector assembly includes a body portion for locating over a flexible pipe and arranged to be connectable to or formed integrally with one or more buoyancy compensating element, and one or more protrusion extending from the body portion and arranged to reduce or interrupt vortex induced vibrations in water surrounding the flexible pipe in use.Type: ApplicationFiled: May 29, 2013Publication date: December 4, 2014Applicant: Wellstream International LimitedInventors: Jiabei Yuan, Zhimin Tan, Yucheng Hou, Yanqiu Zhang
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Publication number: 20140345741Abstract: A flexible pipe body (400) and method of producing a flexible pipe body are disclosed. The flexible pipe body (400) includes a collapse resistant layer (404); and a fluid retaining layer (406) provided radially outwards of the collapse resistant layer (404), wherein the collapse resistant layer (404) comprises at least one elongate band of material having a cross-sectional profile having a fill factor of between 60 and 95%.Type: ApplicationFiled: December 12, 2012Publication date: November 27, 2014Applicant: Wellstream International LimitedInventor: Geoffrey Stephen Graham
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Publication number: 20140326461Abstract: A buoyancy compensating element for connection to a flexible pipe and method of producing a buoyancy compensating element are disclosed. The buoyancy compensating element includes a first body portion and a further body portion, wherein the first and further body portion are configured to be connectable to each other and in use to encompass a portion of flexible pipe.Type: ApplicationFiled: October 19, 2012Publication date: November 6, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventors: Zhimin Tan, Yucheng Hou, Christopher Bush, John Rosche, Tricia Hill
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Publication number: 20140326357Abstract: A flexible pipe body and method of producing a flexible pipe body are disclosed. The method includes providing a length of composite material of thermoplastic or thermosetting material with an electrically conductive material dispersed therein, applying the length to a mandrel or a layer of flexible pipe body, and heating the length by induction heating using an induction heating coil to cure the thermoplastic or thermosetting material.Type: ApplicationFiled: October 15, 2012Publication date: November 6, 2014Applicant: Wellstream International LimitedInventor: Geoffrey Stephen Graham
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Publication number: 20140326460Abstract: A buoyancy compensating element for connection to a flexible pipe and method of producing a buoyancy compensating element are disclosed for increasing or decreasing buoyancy of the portion of flexible pipe. The buoyancy compensating element includes a body portion; and a channel extending through the body portion for receiving a portion of flexible pipe, wherein the body portion and channel are configured such that when a portion of flexible pipe is received in the channel, the portion of pipe has increasing ability to flex towards an end of the channel.Type: ApplicationFiled: October 19, 2012Publication date: November 6, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventors: Zhimin Tan, George Karabelas
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Publication number: 20140305531Abstract: A flexible pipe body for transporting production fluids containing one or more acidic components comprises a fluid-retaining inner polymeric barrier layer and at least one layer including a metallic component and arranged outside said barrier layer, wherein said polymeric barrier layer comprises a first, inner, sub-layer of a polymeric barrier material through which at least some of said acidic component may permeate and a second sub-layer formed on said first sub-layer including a material capable of reacting chemically with said acidic component to form reaction products which are non-corrosive to said metallic component.Type: ApplicationFiled: December 13, 2012Publication date: October 16, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventor: Geoffrey Stephen Graham
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Patent number: 8857521Abstract: Apparatus and a method are disclosed for venting gas from an annulus region of a flexible pipe. The method includes the steps of depressurising a bore region of a flexible pipe and via at least one vent flow fluid communication path, venting gas from an annulus region of the flexible pipe into the bore region.Type: GrantFiled: November 23, 2009Date of Patent: October 14, 2014Assignee: Wellstream International LimitedInventor: Richard Alasdair Clements
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Publication number: 20140199124Abstract: A buoyancy element, riser assembly including a buoyancy element and a method of supporting a riser are disclosed. The buoyancy element includes a body of at least partly flexible structure having a volume that is adjustable between an expanded and contracted position, and an entry port for fluid to be supplied to and/or removed from the body to thereby adjust the volume of the body.Type: ApplicationFiled: April 24, 2012Publication date: July 17, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventor: John Rosche
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Publication number: 20140186124Abstract: A riser assembly and method of producing a riser assembly are disclosed. The riser assembly includes a riser having a plurality of buoyancy elements provided at predetermined intervals along the length of the riser for supporting the riser, and at least one further buoyancy element arranged to support the riser in a configuration for accommodating tension changes in the riser due to vessel movement.Type: ApplicationFiled: May 8, 2012Publication date: July 3, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventors: Zhimin Tan, Yanqiu Zhang, Qian Dong, Yucheng Hou
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Publication number: 20140165709Abstract: A method and apparatus are disclosed for testing one or more layers of a flexible pipe. The method includes the steps of applying a test cycle to a flexible pipe and simultaneously applying the same test cycle to a tubular test layer connected in an in-line configuration with the flexible pipe.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: Wellstream International LimitedInventor: Richard Clements
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Publication number: 20140166146Abstract: An apparatus and method are disclosed for protecting an outer layer of a flexible pipe. The apparatus includes a protective sleeve body comprising a first end region and a further end region. At least one connector element is also provided which is securable to the first end region of the sleeve body for securing the sleeve body with respect to a flexible pipe located proximate to a wear hazard. The sleeve body is securable uncovered over a portion of an outer sheath of the flexible pipe between the outer sheath and the wear hazard to provide a protected portion of flexible pipe having a bending stiffness substantially equal to a bending stiffness of a remaining portion of the flexible pipe which is uncovered by the sleeve body.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: Wellstream International LimitedInventors: Richard Clements, Fabio de Souza Pires, Judimar de Assis Clevelario
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Publication number: 20140124076Abstract: An end fitting (300), flexible pipe (100), riser (203), and method of producing the same are disclosed. A method of venting gas from annuli (312, 319) of a flexible pipe is also disclosed. The end fitting includes a first vent flow fluid communication path (311) and a further vent flow fluid communication path (318). The end fitting is capable of enabling gas to be vented from a flexible pipe body with two annulus regions (312, 319).Type: ApplicationFiled: April 27, 2012Publication date: May 8, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventors: Andrew Peter Roberts, Judimar Clevelario
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Publication number: 20140116564Abstract: A sheath apparatus for housing tubes and/or cables, for incorporation into a flexible pipe body, including: an elongate body portion, comprising an outer surface and a channel for receiving a tube or cable within the body portion, and further comprising at least one opening connecting the channel and the outer surface, wherein the at least one opening comprises a continuous opening extending along the elongate body portion or a plurality of discrete openings at predetermined positions along the elongate body portion, and wherein the channel defines an inner surface of the body portion for contacting the tube or cable.Type: ApplicationFiled: October 4, 2013Publication date: May 1, 2014Applicant: Wellstream International LimitedInventor: John Cross McNab
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Publication number: 20140116563Abstract: A flexible pipe body layer and method of producing a flexible pipe body layer are disclosed. The method includes coextruding an inner sub-layer and an outer sub-layer, wherein the inner sub-layer and outer sub-layer comprise a polymer, and wherein the inner sub-layer has a lower modulus of elasticity than the outer sub-layer.Type: ApplicationFiled: October 4, 2013Publication date: May 1, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventors: Upul Shanthilal Fernando, Neville Dodds
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Publication number: 20140116665Abstract: Apparatus and method for maintaining temperature in a sub-sea device, in particular in relation to fluid in the device. A material having a high latent heat on phase change is used to release latent heat to the fluid when the fluid temperature decreases towards a threshold value.Type: ApplicationFiled: June 22, 2012Publication date: May 1, 2014Applicant: WELLSTREAM INTERNATIONAL LIMITEDInventors: George Karabelas, Duncan Edward Reay