Patents Assigned to I-TEC AS
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Patent number: 8978765Abstract: A valve system for providing fluid flow through radial openings disposed along an axial length of a tubular. The tubular comprises at least one valve group containing at least two valves operable by one drop ball. An inset 302 e.g. of standard grade steel provided in a harder liner 301 in the opening provides an intermediate small opening for at least the time required to open all the remaining valves in the group. The small opening limits the pressure drop over the valve. When all valves are open, the insets 302 are eroded away by an abrasive material, e.g. a slurry used for hydraulic fracturing, and permanent full openings are created.Type: GrantFiled: December 9, 2011Date of Patent: March 17, 2015Assignee: I-Tec ASInventors: Kristoffer Braekke, Geir Lunde, Roger Antonsen
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Patent number: 8960277Abstract: A packer for sealing against an inner cylindrical mandrel and a wellbore wall.Type: GrantFiled: May 23, 2012Date of Patent: February 24, 2015Assignee: I-TEC ASInventors: Kristoffer Braekke, Bård-Einar Angell, Melanie Seguin
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Patent number: 8950478Abstract: Two well tools (100, 200) having centrally mounted drive shafts (160, 260) are provided with a mechanism to remove debris from a coupling between them. Thereafter, the tools can be coupled by inserting a first outer sleeve (110) on the first tool into and rotationally lock it to a second outer sleeve (210) on the second tool. The drive shafts (160, 260) are coupled in a similar manner. The mechanism for removing debris can displace the debris and/or a flushing device (170) using well fluid to stir up debris. The coupling has space for debris that is not removed, e.g. in the form of a chamber 264. The female part of the coupling may comprise a spring loaded lid (271) to reduce pollution by debris when the coupling is not in use.Type: GrantFiled: March 19, 2009Date of Patent: February 10, 2015Assignee: I-Tec ASInventor: Kristoffer Brække
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Publication number: 20140352970Abstract: A trigger mechanism for a ball activated device comprises a seat sleeve with seat defining members forming a fluid seal between the ball and the seat in an initial state and allowing the ball to pass through the seat in a final state. An alternating member can move radially in an aperture through an inner sleeve and abuts an outer surface on the seat sleeve in the initial state, is received in a recess on the seat sleeve in an intermediate state, and is received in a groove in the outer sleeve in the final state. A protective sleeve may extend axially from the seat sleeve over a seat receiving area. The mechanism is suitable for cementing and fracturing as particles cannot penetrate to its moving parts.Type: ApplicationFiled: October 28, 2013Publication date: December 4, 2014Applicant: i-Tec ASInventor: Braekke Kristoffer
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Patent number: 8776888Abstract: The present invention provides a robust, durable and reliable cylindrical valve having closable, radially extending openings for use in cementing, injection, including hydraulic fracturing, and production in wells having high pressures and large pressure differences. The valve may comprise scraping rings in order to remove deposits and the like when it is to be closed after use. Magnets or other suitable means indicates whether the valve is in an open or closed position.Type: GrantFiled: August 25, 2009Date of Patent: July 15, 2014Assignee: I-Tec ASInventor: Kristoffer Braekke
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Patent number: 8418756Abstract: A well plug having a flexible expandable sealing (330) and a metallic anchor (350) which can be moved radially out or in by rotating a leadscrew (170) in opposite directions. The well plug has a ball valve in a central longitudinal passage, which is kept open whenever the leadscrew (160) rotates. This increases the accuracy when setting the plug, and reduces the risk for the plug moving uncontrolled in the well bore during setting or retrieval. The ball valve can be opened or closed by rotating a transmitting shaft (120, 140) within an angle of free motion, before the leadscrew is pulled along in the rotation. A ball valve for high pressure applications is also shown.Type: GrantFiled: March 19, 2009Date of Patent: April 16, 2013Assignee: I-TEC ASInventor: Kristoffer Brække
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Patent number: 8403035Abstract: A sealing and/or anchoring element for use in pipelines. The sealing and/or anchoring element includes at least one helical element disposed around a string section, with the helical element being configured so as to be able to expand radially towards an inner wall of the pipeline as the circumferential diameter thereof is increased.Type: GrantFiled: February 27, 2008Date of Patent: March 26, 2013Assignee: I-Tec ASInventors: Frank Akselberg, Per Olav Haughom
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Publication number: 20120298349Abstract: A packer for sealing against an inner cylindrical mandrel and a wellbore wall.Type: ApplicationFiled: May 23, 2012Publication date: November 29, 2012Applicant: I-TEC ASInventors: Kristoffer Braekke, Bård-Einar Angell, Melanie Seguin
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Patent number: 8215401Abstract: Apparatus for a drop ball activated device, where a ball seat is concentrically and axially slidably disposed within an outer sleeve having a first internal cylindrical surface, wherein the ball seat comprises at least one radially extending lug, which in a first position extends radially inwards from the internal cylindrical surface, thereby defining a first ball seat diameter less than the diameter of the drop ball. The sleeve comprises at least one groove in its internal surface, and the lug may be received in the groove, thereby defining a second ball seat diameter at least as large as the diameter of the drop ball.Type: GrantFiled: February 12, 2010Date of Patent: July 10, 2012Assignee: I-Tec ASInventors: Kristoffer Braekke, Geir Lunde, Roger Antonsen
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Publication number: 20120160515Abstract: A valve system for providing fluid flow through radial openings disposed along an axial length of a tubular. The tubular comprises at least one valve group containing at least two valves operable by one drop ball. An inset 302 e.g. of standard grade steel provided in a harder liner 301 in the opening provides an intermediate small opening for at least the time required to open all the remaining valves in the group. The small opening limits the pressure drop over the valve. When all valves are open, the insets 302 are eroded away by an abrasive material, e.g. a slurry used for hydraulic fracturing, and permanent full openings are created.Type: ApplicationFiled: December 9, 2011Publication date: June 28, 2012Applicant: I-TEC ASInventors: Kristoffer Braekke, Geir Lunde, Roger Antonsen
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Publication number: 20120145382Abstract: A valve system for providing fluid flow through radial openings disposed along an axial length of a tubular. The tubular comprises at least one valve group containing at least two valves operable by one drop ball. An inset 302 e.g. of standard grade steel provided in a harder liner 301 in the opening provides an intermediate small opening for at least the time required to open all the remaining valves in the group. The small opening limits the pressure drop over the valve. When all valves are open, the insets 302 are eroded away by an abrasive material, e.g. a slurry used for hydraulic fracturing, and permanent full openings are created.Type: ApplicationFiled: December 22, 2010Publication date: June 14, 2012Applicant: I-TEC ASInventors: Kristoffer Braekke, Geir Lunde, Roger Antonsen
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Publication number: 20110204273Abstract: The present invention provides a robust, durable and reliable cylindrical valve having closable, radially extending openings for use in cementing, injection, including hydraulic fracturing, and production in wells having high pressures and large pressure differences. The valve may comprise scraping rings in order to remove deposits and the like when it is to be closed after use. Magnets or other suitable means indicates whether the valve is in an open or closed position.Type: ApplicationFiled: August 25, 2009Publication date: August 25, 2011Applicant: I-TEC ASInventor: Kristoffer Braekke
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Publication number: 20110198100Abstract: Apparatus for a drop ball activated device, where a ball seat is concentrically and axially slidably disposed within an outer sleeve having a first internal cylindrical surface, wherein the ball seat comprises at least one radially extending lug, which in a first position extends radially inwards from the internal cylindrical surface, thereby defining a first ball seat diameter less than the diameter of the drop ball. The sleeve comprises at least one groove in its internal surface, and the lug may be received in the groove, thereby defining a second ball seat diameter at least as large as the diameter of the drop ball.Type: ApplicationFiled: February 12, 2010Publication date: August 18, 2011Applicant: I-TEC ASInventors: Kristoffer Braekke, Geir Lunde, Roger Antonsen
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Patent number: 7954567Abstract: An adjustable centering tool for use in pipes of varying inner diameter. The centering tool being provided with a number of identical and steplessly adjustable, radially protruding wings having guiding lugs and chamfered end faces. The wings, having been set, are retained by an upper lock mandrel with a safety pin and a lower lock mandrel with a safety nut. The outer circumference of a cylindrical tool body is fitted with longitudinal grooves having sloped terminations cooperating with the wing dimensions, the chamfered end faces of the wings, and the guiding lugs.Type: GrantFiled: July 28, 2006Date of Patent: June 7, 2011Assignee: I-Tec ASInventor: Per Olav Haughom
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Patent number: 7618211Abstract: A manual locking assembly for a quick connect coupling includes a cylindrical male pin, a cylindrical sleeve-shaped female part, a rotatable key bolt, a locking bolt retainer, and a spring. The rotatable key bolt is axially arranged and central within the cylindrical sleeve-shaped female part, and has a quadrilateral locking block, a cylindrical guiding flange, and a cylindrical locking bolt having millings on opposite sides. The locking bolt retainer has a cylindrical body including a transversal hole having a radius that corresponds with an outer radius of the cylindrical locking bolt and a groove extending from the transversal hole that corresponds to the millings on the cylindrical locking bolt, a lower flange on a first side of the cylindrical body, and an upper flange located on a second side of the cylindrical body opposite to the first side, the upper flange having an inclined surface on an upper side of the upper flange.Type: GrantFiled: July 12, 2006Date of Patent: November 17, 2009Assignee: I-TEC ASInventor: John Robert Loxley Wood