Patents by Inventor Dag Ravn Pedersen
Dag Ravn Pedersen 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: 9816342Abstract: This invention relates to a junk catcher (2, 2?) releasably connected to a retrievable bridge plug (4, 4?) connectable to a setting tool (6) for joint deployment of bridge plug (4, 4?) and junk catcher (2, 2?) in a borehole (9) or a tubular in the borehole (9). Setting tool (6) extends through a fishing neck (12), a catcher tube (14), a flanged section (16), a valve chamber (18), a closable opening (20) and a portion of a setting sleeve (22, 22?) of junk catcher (2, 2?). Valve chamber (18) comprises a valve (50) arranged to close closable opening (20) after retrieval of setting tool (6) from junk catcher (2, 2?). The junk catcher (2, 2?) is connected to bridge plug (4, 4?) by at least one shear bolt (27, 38). Bridge plug (4, 4?) comprises a plug fishing neck (32, 32?) facing junk catcher (2, 2?), and bridge plug (4, 4?) comprises an equalizing channel (71) in a mandrel (7).Type: GrantFiled: April 24, 2014Date of Patent: November 14, 2017Assignee: Altus Intervention ASInventors: Dag Ravn Pedersen, Robin Lovslett, Hassan Zakaria, Bard Martin Tinnen
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Patent number: 9291029Abstract: An anchor mechanism for use in a well including a housing with a plurality of openings evenly distributed along the circumference of the housing and each opening arranged to narrowly house a radially movably slip including first and second end portions, a gripping side facing a well wall, the gripping side being provided with a plurality of teeth, an underside facing the opposite direction, two side faces extending from the gripping side to the underside and to two end faces; the slip having, at its first and second end portions, with a first inclined face and a second inclined face substantially sloping from the end faces and towards the middle portion of the slip on the underside; the slip provided, on its end faces, with laterally projecting tongues having a longitudinal direction parallel to the inclined faces; the slip provided, on its two side faces, with guide portions exhibiting a longitudinal direction perpendicular to the longitudinal direction of the slip and the guide portion complementarily fittiType: GrantFiled: April 24, 2013Date of Patent: March 22, 2016Assignee: Altus Intervention ASInventors: Robin Løvslett, Dag Ravn Pedersen
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Publication number: 20160060989Abstract: This invention relates to a junk catcher (2, 2?) releasably connected to a retrievable bridge plug (4, 4?) connectable to a setting tool (6) for joint deployment of bridge plug (4, 4?) and junk catcher (2, 2?) in a borehole (9) or a tubular in the borehole (9). Setting tool (6) extends through a fishing neck (12), a catcher tube (14), a flanged section (16), a valve chamber (18), a closable opening (20) and a portion of a setting sleeve (22, 22?) of junk catcher (2, 2?). Valve chamber (18) comprises a valve (50) arranged to close closable opening (20) after retrieval of setting tool (6) from junk catcher (2, 2?). The junk catcher (2, 2?) is connected to bridge plug (4, 4?) by at least one shear bolt (27, 38). Bridge plug (4, 4?) comprises a plug fishing neck (32, 32?) facing junk catcher (2, 2?), and bridge plug (4, 4?) comprises an equalizing channel (71) in a mandrel (7).Type: ApplicationFiled: April 24, 2014Publication date: March 3, 2016Applicant: Altus Intervention ASInventors: Dag Ravn Pedersen, Robin Lovslett, Hassan Zakaria, Bard Martin Tinnen
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Publication number: 20150090441Abstract: An anchor mechanism for use in a well including a housing with a plurality of openings evenly distributed along the circumference of the housing and each opening arranged to narrowly house a radially movably slip including first and second end portions, a gripping side facing a well wall, the gripping side being provided with a plurality of teeth, an underside facing the opposite direction, two side faces extending from the gripping side to the underside and to two end faces; the slip having, at its first and second end portions, with a first inclined face and a second inclined face substantially sloping from the end faces and towards the middle portion of the slip on the underside; the slip provided, on its end faces, with laterally projecting tongues having a longitudinal direction parallel to the inclined faces; the slip provided, on its two side faces, with guide portions exhibiting a longitudinal direction perpendicular to the longitudinal direction of the slip and the guide portion complementarily fittiType: ApplicationFiled: April 24, 2013Publication date: April 2, 2015Inventors: Robin Løvslett, Dag Ravn Pedersen
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Patent number: 6234249Abstract: A device for use with a retrievable bridge plug (30) comprising an upper packer element (3) and a lower packer element (11). The upper element (3) is connected to an upper link (6), which can rotate around a first pin (5). Upper link (6) is rotatably connected to a lower link (8) by a second pin (7). Lower link (8) can rotate around a third pin (9). An angle (&agr;) is formed between the longitudinal axis of the bridge plug and a line extending through the first pin (5) and the second pin (7), and correspondingly through the second pin (7) and the third pin (9), which is greater than zero when upper link (6) and lower link (8) is drawn. Upper link (6) and lower link (8) are arranged for, at setting, to expand radially by compression of upper packer bracket (3) against lower bracket (12), for forming a mechanical barrier for upper packer element (3) and lower packer element (11).Type: GrantFiled: July 30, 1999Date of Patent: May 22, 2001Assignees: Bronnteknologiutvikling AS, Maritime Well Service ASInventors: Frode Andersen, Dag Ravn Pedersen
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Patent number: 6142227Abstract: A bridge plug (1) for use in a casing (7), for example in oil and/or gas wells, comprising a packing element (2) of a resilient material is disclosed. The packing element (2) is adapted for at impact from a running tool to expand from a first diameter, to a second diameter that is greater than the first diameter which corresponds to the inner diameter of the casing that is to be sealed. The packing element (2) is divided in zones forming at least one expandable sealing packing element (34, 35) and at least one expandable support packing element (31, 32, 33), where the support packing elements (31, 32, 33) are expandable to a smaller diameter than the sealing packing elements (34, 35). The bridge plug (1) is further comprised of an anchoring means (3) that is provided for holding the bridge plug (1) in its place in the casing by a friction surface (28) that is pressed radially against the casing (7).Type: GrantFiled: March 3, 1998Date of Patent: November 7, 2000Assignees: Bronnteknologiutvikling AS, Maritime Well Service ASInventors: Epen Hiorth, Frode Andersen, Dag Ravn Pedersen