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公开(公告)号：EP2428637A3
公开(公告)日：2014-07-30
申请号：EP11189762.5
申请日：2008-05-09
CPC分类号： E21B17/1028 , E21B17/1078 , E21B43/103
摘要： An expandable bow spring centralizer (8) having a first collar (10A) coupled to and spaced apart from a second collar (10B) through a plurality of bow springs (30) wherein a fin (32) is connected to each bow spring (30), and then connected to one or more adjacent fins (32) upon collapse of the bow springs (30) to form a restraining band (39) that may be ruptured, e.g., upon expansion of the expandable pipe string (80).
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公开(公告)号：EP2601374B1
公开(公告)日：2014-07-09
申请号：EP11739094.8
申请日：2011-08-05
IPC分类号： E21B17/10
CPC分类号： F16M13/02 , E21B17/1028 , E21B17/1035 , E21B47/01 , F16B2/06 , F16L3/08
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公开(公告)号：EP2677111A2
公开(公告)日：2013-12-25
申请号：EP13184205.6
申请日：2008-11-28
申请人： Petrowell Ltd
发明人： MacLeod, Iain
IPC分类号： E21B17/10
CPC分类号： E21B17/1021 , E21B17/1028 , E21B17/1078
摘要： A centraliser (10) for centralising a tubular in a conduit is described. The centraliser comprises a body comprising a upper body portion (12) and a lower body portion (14) and a plurality of arms (16) linking the upper body portion to the lower body portion. Relative movement of the upper and lower body portions towards each other causes the arms to buckle radially outwards into a set configuration in which the arms are engaged, in use, with a conduit.
摘要翻译： 描述了用于将管道集中在管道中的中心器（10）。 该中心器包括主体，该主体包括上主体部分（12）和下主体部分（14）以及将上主体部分与下主体部分连接的多个臂部（16）。 上主体部分和下主体部分朝向彼此的相对运动导致臂沿径向向外弯曲成固定构造，其中臂在使用中与导管接合。
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公开(公告)号：EP2663727A2
公开(公告)日：2013-11-20
申请号：EP12704892.4
申请日：2012-01-13
发明人： KIRK, Andrew , KIRK, Ian
IPC分类号： E21B17/10
CPC分类号： E21B17/1078 , B23P17/00 , E21B17/1014 , E21B17/1028 , Y10T29/49
摘要： A centralizer includes a body having a bore with an axis, the bore being configured to receive a tubular to be centralized, the body having at least one resilient device configured to extend radially from the axis of the bore, wherein the body has at least one collar member extending radially inwards from the centralizer body adjacent to an end of the body. The collars are fixed co-axially in the bore to be resistant to axial movement of the collar member, and can be retained in the body by radially extending a lip formed by forcing material radially inwards into the bore to retain the collar. The body is adapted to receive within the bore an anchoring device for connection to the tubular. The anchoring device is configured to engage the collar member within the bore so that relative movement of the centralizer and the tubular is restricted.
摘要翻译： 一种扶正器包括具有轴的孔体，所述孔构造成容纳待集中的管状体，所述主体具有至少一个弹性装置，该弹性装置构造成从所述孔的轴线径向延伸，其中所述主体具有至少一个 轴环构件从靠近身体的端部的扶正器主体径向向内延伸。 轴环在孔中同轴地固定以抵抗轴环构件的轴向运动，并且可以通过径向延伸通过将材料径向向内推入孔而形成的唇缘而保持在轴环中，从而保持套环。 本体适于在孔内容纳用于连接到管的锚定装置。 锚固装置被配置成使孔内的轴环构件接合，从而限制了扶正器和管状体的相对移动。
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公开(公告)号：EP2215324B1
公开(公告)日：2013-11-06
申请号：EP08857410.8
申请日：2008-11-28
申请人： Petrowell Ltd
发明人： MACLEOD, Iain
IPC分类号： E21B17/10
CPC分类号： E21B17/1021 , E21B17/1028 , E21B17/1078
摘要： A centraliser (10) for centralising a tubular in a conduit is described. The centraliser comprises a body comprising a upper body portion (12) and a lower body portion (14) and a plurality of arms (16) linking the upper body portion to the lower body portion. Relative movement of the upper and lower body portions towards each other causes the arms to buckle radially outwards into a set configuration in which the arms are engaged, in use, with a conduit.
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96.发明公开Expandable centralizer for expandable pipe string 审中-公开Erweiterbarer Zentriererfürerweiterbaren Rohrstrang
公开(公告)号：EP2428637A2
公开(公告)日：2012-03-14
申请号：EP11189762.5
申请日：2008-05-09
CPC分类号： E21B17/1028 , E21B17/1078 , E21B43/103
摘要： An expandable bow spring centralizer (8) having a first collar (10A) coupled to and spaced apart from a second collar (10B) through a plurality of bow springs (30) wherein a fin (32) is connected to each bow spring (30), and then connected to one or more adjacent fins (32) upon collapse of the bow springs (30) to form a restraining band (39) that may be ruptured, e.g., upon expansion of the expandable pipe string (80).
摘要翻译： 一种可膨胀的弓形弹簧对中器（8），其具有通过多个弓形弹簧（30）联接到第二套环（10B）并与第二套环（10B）间隔开的第一套环（10A），其中，翅片（32）连接到每个弯曲弹簧 ），然后在弓形弹簧（30）塌缩时连接到一个或多个相邻的翅片（32），以形成例如在可膨胀管柱（80）膨胀时可能破裂的限制带（39）。
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公开(公告)号：EP2402552A1
公开(公告)日：2012-01-04
申请号：EP11182825.7
申请日：2007-11-21
申请人： Swelltec Limited
发明人： Nutley, Brian , Nutley, Kim
IPC分类号： E21B33/12
CPC分类号： E21B33/12 , E21B17/10 , E21B17/1028 , E21B17/1078 , E21B33/10 , E21B33/1208 , E21B33/1216
摘要： A downhole apparatus, for example a centraliser, comprises a swellable material which expands upon contact with at least one predetermined fluid. In a first aspect of the invention, a centraliser comprises a body and a plurality of formations upstanding from the body. In another aspect, a downhole apparatus comprise a throughbore configured to receive a tubular, a swellable member, and a rigid assembly integrally formed with the swellable member. The rigid assembly provides stand off to the apparatus in use. In a further aspect, the downhole apparatus has a first condition, before expansion of the swellable member in which a rigid assembly defines a maximum outer diameter of the apparatus. In a second condition after expansion of the swellable member, the swellable member defines a maximum outer diameter of the apparatus. In a preferred embodiment the rigid assembly is designed to flex or deform under an axial or radial load.
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98.发明公开FIELD-ASSEMBLABLE BOW-SPRING CASING CENTRALIZER AND METHOD OF MAKING A CENTRALIZER 有权弓BOHRROHRZENTRIERVORRICHTUNG羽毛和方法安装用于生产中心AM经营状况
公开(公告)号：EP2148972A1
公开(公告)日：2010-02-03
申请号：EP08746600.9
申请日：2008-04-23
IPC分类号： E21B17/10
CPC分类号： E21B17/1028
摘要： A casing centralizer is provided that may be shipped unassembled and is then assemblable at a well site. According to one embodiment, first and second collars each have a plurality of circumferentially spaced aligning slots and a corresponding plurality of threaded, extruded through-holes. A plurality of bow-springs each have a foot at each end. Each bow-spring axially extends between the first and second collars. The foot at one end of each bow-spring is disposed in one of the aligning slots of the first collar, and the foot at the other end is disposed in one of the aligning slots on the second collar. A plurality of threaded fasteners corresponding in number to the threaded extruded through-holes secure the ends of the bow-springs to the threaded extruded through-holes. The extruded through-holes have a flange height greater than a collar thickness adjacent to the extruded through-holes. The increased flange height allows more threads to be formed within the extruded holes, resulting in a stronger threaded connection with the threaded fasteners, and a correspondingly stronger, more durable centralizer. The foot is retained within the aligning slot to reinforce the coupling between the bow-spring and the collar. A method of manufacturing the casing centralizer is also provided.
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公开(公告)号：EP1680573B1
公开(公告)日：2008-07-30
申请号：EP04791115.1
申请日：2004-10-01
IPC分类号： E21B43/10 , E21B23/01 , E21B17/10 , E21B33/128
CPC分类号： E21B33/128 , E21B17/1028 , E21B23/01 , E21B43/103
摘要： An assembly for use in a wellbore formed in an earth formation, comprising an expandable tubular element and an outer structure having first and second portions arranged at a distance from each other, said portions being to the tubular element in a manner that said distance changes as a result of radial expansion of the tubular element, the outer strucure further having a third portion arranged to move radially outward upon said change in distance between the first and second portions, wherein said radially outward movement of the third portion is larger than radially outward movement of the tubular element as a result of radial expansion of the tubular element.
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100.发明授权
公开(公告)号：EP0769606B1
公开(公告)日：2001-04-04
申请号：EP96402078.8
申请日：1996-09-30
发明人： Meynier, Patrick
CPC分类号： G01V11/005 , E21B17/1028 , E21B47/01
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