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1.发明公开Magnetic retrieval apparatus and method of construction thereof 审中-公开Magnetische Entnahmevorrichtung
公开(公告)号：EP2868862A1
公开(公告)日：2015-05-06
申请号：EP14191364.0
申请日：2014-10-31
IPC分类号： E21B31/06
CPC分类号： E21B31/06 , Y10T29/49895 , Y10T29/53657
摘要： A downhole retrieval tool includes a mandrel (10); an inner sleeve (30) disposed around the mandrel; a plurality of magnets (50) coupled to the inner sleeve; and an outer sleeve (25) disposed around the plurality of magnets, wherein the inner sleeve and the plurality of magnets are rotatable relative to the mandrel. In another aspect, an assembly tool for handling a magnet includes an anchor; a conveyance movable relative to the anchor; and a magnet holder coupled to the conveyance, wherein the magnet holder includes an arm for retaining the magnet.
摘要翻译： 井下回收工具包括心轴（10）; 设置在心轴周围的内套筒（30）; 耦合到所述内套筒的多个磁体（50） 以及设置在所述多个磁体周围的外套筒（25），其中所述内套筒和所述多个磁体可相对于所述心轴旋转。 在另一方面，一种用于处理磁体的装配工具包括锚固件; 可相对于锚固器移动的输送器; 以及耦合到所述输送器的磁体保持器，其中所述磁体保持器包括用于保持所述磁体的臂。
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公开(公告)号：EP2176504A4
公开(公告)日：2014-04-30
申请号：EP08772427
申请日：2008-07-06
发明人： KNOBLOCH BENTON , ROY TODD
CPC分类号： E21B37/02 , E21B17/1057 , E21B27/00 , E21B31/06 , F16C2352/00
摘要： Apparatus for cleaning the inner wall of wellbore tubulars, and for capturing downhole debris in the wellbore An elongated, tubular central mandrel has threaded connections on either end for makeup into a tubular string The mandrel has recesses on its outer circumference into which split rings are mounted Various service elements are then attachable to the central mandrel, by sliding them over the mandrel and holding them in place with stabilizer elements which connect to the split rings Different embodiments of the service elements include a brush assembly, a junk basket, and a magnet The stabilizer elements may be mounted onto the split rings so as to either be rotationally locked with respect to the mandrel, or so as to be capable of rotating with respect to the mandrel, since the service elements are held in place on the central mandrel by the stabilizer elements.
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公开(公告)号：EP2888434B1
公开(公告)日：2016-12-21
申请号：EP13750364.5
申请日：2013-07-17
IPC分类号： E21B31/00
摘要： A magnetic cleaning tool for collecting ferrous debris in a wellbore and a method of cleaning a wellbore. The magnetic cleaning tool has a tool body for attachment in a work string, one or more magnets supported on the tool body, and a sleeve located around the tool body which is arranged to be moveable along the body to provide selective coverage of the magnets. Embodiments are described providing shear pins and spring loaded balls to hold the sleeve either over the magnets or free of the magnets. An expandable piston, moveable by action of a drop ball, is described to release the sleeve. The sleeve is arranged so that the magnets can be covered and therefore effectively inactive on run-in and during downhole operations, and uncovered to be active when pulled out of the wellbore.
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4.发明公开DOWNHOLE MAGNET, DOWNHOLE MAGNETIC JETTING TOOL AND METHOD OF ATTACHMENT OF MAGNET PIECES TO THE TOOL BODY 有权钻孔磁体，磁性钻孔清洗器，以及将磁性部件紧固到工具体的方法
公开(公告)号：EP2909431A4
公开(公告)日：2015-09-23
申请号：EP13845080
申请日：2013-10-09
发明人： LEIPER SIMON , ROBERTSEON KEVIN
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公开(公告)号：EP2943643B1
公开(公告)日：2017-07-19
申请号：EP13703649.7
申请日：2013-01-14
申请人： Archer Oiltools AS
发明人： SKJEIE, Trond
CPC分类号： E21B31/06 , E21B27/04 , E21B34/14 , E21B37/00 , E21B2034/007
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7.发明公开DOWNHOLE MAGNET, DOWNHOLE MAGNETIC JETTING TOOL AND METHOD OF ATTACHMENT OF MAGNET PIECES TO THE TOOL BODY 有权HOLE磁石，磁BOHRLOCHSPÜLWERKZEUG和方法用于固定磁铁片到工具体
公开(公告)号：EP2909431A1
公开(公告)日：2015-08-26
申请号：EP13845080.4
申请日：2013-10-09
发明人： LEIPER, Simon , ROBERTSEON, Kevin
摘要： A tool for suspending in a well retrieves various metal debris from the well, and includes an elongated tool body with a plurality of magnets included in a plurality longitudinal ridges which are circumferentially spaced. In the method a plurality of magnets can be positioned within openings, recesses, or pockets in each ridge, and held in place by one or more retaining plates, the tool being connected to a drill string and lowered into a well.
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公开(公告)号：EP1373676B1
公开(公告)日：2006-09-06
申请号：EP01948400.5
申请日：2001-06-15
申请人： Rattler Tools, Inc.
发明人： RUTTLEY, David, J.
摘要： A tool for retrieving metal debris from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body (10). Each magnet assembly has a magnet member (42), which forms a primary debris settling area (70). Each magnet member is protected by a magnet protector. A secondary debris settling area is formed between a magnet and an adjacent magnet protector to allow utilization of the residual magnetic force created by the magnet members. The secondary settling area occupies at least half of the surface area of the primary settling area.
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公开(公告)号：EP1373676A1
公开(公告)日：2004-01-02
申请号：EP01948400.5
申请日：2001-06-15
申请人： Rattler Tools, Inc.
发明人： RUTTLEY, David, J.
摘要： A tool for retrieving metal debris from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body (10). Each magnet assembly has a magnet member (42), which forms a primary debris settling area (70). Each magnet member is protected by a magnet protector. A secondary debris settling area is formed between a magnet and an adjacent magnet protector to allow utilization of the residual magnetic force created by the magnet members. The secondary settling area occupies at least half of the surface area of the primary settling area.
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