APPARATUS FOR AND METHOD OF DEPLOYING A CENTRALIZER INSTALLED ON AN EXPANDABLE CASING STRING
    22.
    发明公开
    APPARATUS FOR AND METHOD OF DEPLOYING A CENTRALIZER INSTALLED ON AN EXPANDABLE CASING STRING 有权
    用于在可膨胀套管柱上安装集中器的装置和方法

    公开(公告)号:EP2185785A1

    公开(公告)日:2010-05-19

    申请号:EP08781223.6

    申请日:2008-07-01

    IPC分类号: E21B17/10 E21B43/10

    CPC分类号: E21B17/1028 E21B43/103

    摘要: A method of and apparatus for deploying a bow spring centralizer (10) installed on an expandable casing string (30) and restrained in the collapsed configuration by restraining bands (12A, 12B) that rupture, upon expansion of the casing string (30), to deploy the bow spring centralizer (10) and provide stand-off between the expanded casing string (30') and the wall of the borehole. In one embodiment, the bow spring centralizer comprises landings (13) for receiving and retaining the bands (12A, 12B) for restraining the centralizer in the collapsed configuration. In another embodiment, the bands (12A, 12B) are secured to the centralizer (10) to prevent separation of the ruptured bands (12A', 12B') from the deployed centralizer (10').

    摘要翻译: 本发明涉及一种用于展开安装在可膨胀套管柱(30)上的弓形弹簧扶正器(10)的方法和装置,并且通过限制在套管柱(30)膨胀时破裂的带(12A,12B) 以展开弓形弹簧扶正器(10)并且在膨胀的套管柱(30')和钻孔壁之间提供支座。 在一个实施例中,弓形弹簧扶正器包括用于接收和保持用于将扶正器限制在收缩构造中的带(12A,12B)的平台(13)。 在另一个实施例中,带(12A,12B)固定到扶正器(10)以防止破裂带(12A',12B')从展开扶正器(10')分离。

    LOW -CLEARANCE CENTRALIZER AND METHOD OF MAKING CENTRALIZER
    23.
    发明公开
    LOW -CLEARANCE CENTRALIZER AND METHOD OF MAKING CENTRALIZER 有权
    根据上述制造中心设备低GAME和方法中心设备

    公开(公告)号:EP2158378A1

    公开(公告)日:2010-03-03

    申请号:EP08755188.3

    申请日:2008-05-08

    IPC分类号: E21B17/10

    摘要: A bow-spring centralizer (6) includes bow springs (34), moving collars (20) secured to each end of each bow spring, and interlocked stop collars (10). Extendable collars (8) may each be formed of a moving collar (20) movably interlocked with a stop collar (10). The centralizer (6) may be formed from a tube cut using a laser to create two extendable collars coupled by bow springs. Each extendable collar may include heads (12) integrally formed on extensions (26) protruding from a collar (stop collar or moving collar). The heads may be generally rectangular, arrow, or teardrop-shaped head or some other shape. Each head may be slidably captured within a chamber (24) on the interlocked collar (moving collar or stop collar). The extensions of each interlocked tubular member define the outer walls of the chamber in which a head of the interlocked tubular member is slidably captured.

    BOHRROHR
    25.
    发明公开
    BOHRROHR 失效
    BOHRROHR。

    公开(公告)号:EP0553309A1

    公开(公告)日:1993-08-04

    申请号:EP92911093.0

    申请日:1992-05-22

    申请人: GD-ANKER GMBH

    发明人: GRUBER, Heinz

    摘要: Afin d'améliorer les conditions d'évacuation d'un fluide de lavage chargé de particules de roches dégagées pendant la phase de forage, une ancre de forage par injection comprend des tiges d'ancrage (2), des pièces d'accouplement (3), des soupapes de compression (15), un élément intermédiaire (9) contenant une soupape de non retour et une tête de forage (1) toujours vissés les uns dans les autres, de sorte que la face extérieure du tube de forage à l'état assemblé ait une structure complètement homogène depuis la tête de forage (1). Cette structure se caractérise par un filetage extérieur qui s'étend uniformément sur toute sa longueur, donc par un diamètre uniforme, de sorte que les tiges d'ancrage (2) puissent déplacer, une fois le forage achevé, une pièce d'écartement depuis l'ouverture du trou de forage jusqu'à n'importe quel point voulu sur toute la longueur du tube de forage. Les tiges d'ancrage (2) sont pourvues sur toute leur longueur d'un filetage intérieur uniforme, de sorte qu'elles puissent être utilisées avec l'ancre de forage par injection (1) même après avoir été tronçonnées. A cet effet, la pièce d'accouplement, la soupape de compression (15), l'élément intermédiaire (9) et la tête de forage (1) comprennent des cylindres tubulaires (20, 21; 10; 6) dont les filetages intérieur et extérieur ont une structure correspondante à celle des tiges d'ancrage (2) et assurent une fonction de butée permettant d'avoir des positions de vissage déterminées.

    "> Zentriereinrichtung für Bohr- und Futterrohre
    26.
    发明公开
    Zentriereinrichtung für Bohr- und Futterrohre " 失效
    ZentriereinrichtungfürBohr- und Futterrohre“。

    公开(公告)号:EP0512154A1

    公开(公告)日:1992-11-11

    申请号:EP91114238.8

    申请日:1991-08-24

    发明人: Reinholdt, Bernd

    IPC分类号: E21B17/10

    CPC分类号: E21B17/1028

    摘要: Für die Tiefbohrtechnik wird zur zentralen Führung von Rohren ein Zentrierkorb vorgeschlagen, bei dem die die Rohre umschließenden Tragringe innere Umfangsnuten aufweisen und die zu zentrierenden Rohre im Bereich der Tragringnuten mit in Rohrumfangsnuten angeordneten Stoppringen versehen sind, die nach dem Aufschieben des Zentrierkorbs auf das Rohr durch fensterartige Öffnungen der Tragringe in die Rohrnuten schiebbar sind.

    摘要翻译: 对于深孔钻孔,提出了一种用于管道中心引导的定心笼,其中围绕管的支撑环具有内周槽,并且将中心管设置在具有止动环的支撑环槽的区域中 它们布置在管周边槽中,并且在将定心笼推到管上之后可以将支撑环的窗口开口推入管槽中。 ... ...

    Spring bow, centralizer and method for its use in a borehole
    27.
    发明公开
    Spring bow, centralizer and method for its use in a borehole 失效
    Federbogen,Zentriervorrichtung und Verfahrenfürderen Anwendung在einem Bohrloch。

    公开(公告)号:EP0297716A1

    公开(公告)日:1989-01-04

    申请号:EP88304630.2

    申请日:1988-05-23

    IPC分类号: E21B17/10

    CPC分类号: E21B17/1028

    摘要: A centralizer for well casing (16) functions in an annular space between the casing (16) and a wellbore (20). It comprises a pair of axially spaced-apart and aligned collars (12) adapted to encircle the well casing and a plurality of spring bows (14) extending between and secured to the collars. Each spring bow (14, 280) has two ends and an outwardly convex curved mid-portion. In a first form of the invention starting force is reduced by providing spring bows having outwardly projecting contact angle reduction members (282) that engage the upper edge of the wellbore (20) as the casing (16) is moved into the wellbore (20) to reduce the effective contact angle of the spring bows (14, 280) with respect to the wellbore (20) and thereby reduce the force required to insert the centralizer (10) into the wellbore (20). In a second form of the invention the spring bows are provided with casing abutment members (283) extending inwardly towards the centralizer's longitudinal axis. The casing abutment members (283) contact the casing (16) as the spring bows (14, 280) are moved towards the casing (16) during insertion of the centralizer (10) into the wellbore (20) to increase the restoring force of the spring bows. The spring bows may have both contact angle reduction members (282) and casing abutment members (283) to give a centralizer having a desirable combination of low starting force with high restoring force.

    摘要翻译: 用于井套管(16)的扶正器在壳体(16)和井筒(20)之间的环形空间中起作用。 它包括一对轴向间隔开和对齐的套环(12),其适于围绕井套管以及在套环之间延伸并固定到套环上的多个弹簧弓(14)。 每个弹簧弓(14,280)具有两个端部和一个向外凸出的弯曲的中间部分。 在本发明的第一形式中,当壳体(16)移动到井眼(20)中时,通过提供具有向外突出的接触角减小构件(282)的弹簧弓来减小启动力,所述弹性弓形接头与井筒(20)的上边缘接合, 以减少弹簧弓(14,280)相对于井筒(20)的有效接触角,从而减小将扶正器(10)插入井眼(20)所需的力。 在本发明的第二种形式中,弹簧弓具有向内朝着扶正器的纵向轴线延伸的壳体抵接构件(283)。 当将扶正器(10)插入井眼(20)中时弹簧弓(14,280)向壳体(16)移动时,壳体抵接构件(283)接触壳体(16),以增加回弹力 春天的弓。 弹簧弓可以具有接触角减小构件(282)和壳体抵接构件(283),以给予具有低启动力和高恢复力的期望组合的扶正器。

    ROLLED TUBULAR CENTRALIZER
    28.
    发明授权

    公开(公告)号:EP3027333B1

    公开(公告)日:2018-06-27

    申请号:EP14832286.0

    申请日:2014-07-23

    摘要: A method of forming a centralizer where a flat plate is created into a tubular where the flat plate is typically rolled so that two sides of the plate contact one another and are then linked, typically by welding. Openings are then created in the tubular such that there are no comers or other points that stress cracks may originate. Once the openings are created the remaining material between adjacent openings forms ribs. The openings created in the tubular are generally aligned with the long axis of the tubular. The material, at the upper and lower end of the flat plate where openings were not created serve as circumferential collars. The ribs may be radially outwardly expanded in order to provide adequate stand-off. In many instances the ribs will also be hardened by heat treating or other hardening processes.

    HEAT SOURCES AND ALLOYS FOR USE IN DOWN-HOLE APPLICATIONS
    29.
    发明授权
    HEAT SOURCES AND ALLOYS FOR USE IN DOWN-HOLE APPLICATIONS 有权
    WÄRMEQUELLENSOWIE LEGIERUNGEN ZUR VERWENDUNG在BOHRLOCHANWENDUNGEN

    公开(公告)号:EP2935766B1

    公开(公告)日:2017-04-19

    申请号:EP13815109.7

    申请日:2013-12-20

    申请人: Bisn Tec Ltd

    发明人: CARRAGHER, Paul

    摘要: A chemical reaction heat source for use in heaters used in down-hole applications is provided. The heat source has a fuel composition that comprises thermite and a damping agent. The use of the thermite mix enables the heaters of the present invention to generate hotter temperatures down wells. This in turn allows the use of Bismuth/Germanium alloys, which have higher melting points, to enable the production of plugs for the abandonment of deeper wells where subterranean temperatures are higher.

    摘要翻译: 提供了用于井下应用的加热器中的化学反应热源。 热源具有包含耐热铁和阻尼剂的燃料组合物。 使用白蚁混合物可以使本发明的加热器在井下产生较热的温度。 这又允许使用具有较高熔点的铋/锗合金,以便能够生产用于放置地下温度较高的较深井的塞子。

    CENTRALIZER
    30.
    发明公开
    CENTRALIZER 有权
    ZENTRALISIERUNGSVORRICHTUNG

    公开(公告)号:EP2960426A3

    公开(公告)日:2016-03-23

    申请号:EP15173195.7

    申请日:2015-06-22

    IPC分类号: E21B17/10 E21B33/14

    摘要: A centralizer sub for cementing a tubular string in a wellbore includes: a tubular body; a centralizer disposed along an outer surface of the body and having a pair of collars and a plurality of bow springs connecting the collars; and a joint longitudinally linking the centralizer to the body. The joint has: a groove formed in and around the body outer surface, and a plurality of protrusions formed integrally with or mounted to one of the collars and extending into the groove.

    摘要翻译: 用于将管柱固定在井眼中的扶正器子包括:管状体; 沿着所述主体的外表面设置并具有一对轴环和连接所述轴环的多个弓形弹簧的扶正器; 以及将所述扶正器纵向连接到所述主体的接头。 接头具有:形成在主体外表面中和周围的凹槽,以及多个突起,与突出部中的一个一体地形成或安装到该凹槽中并延伸到凹槽中。