Turned-down centralizer sub assembly

    公开(公告)号:US10208544B2

    公开(公告)日:2019-02-19

    申请号:US14978466

    申请日:2015-12-22

    IPC分类号: E21B17/10

    摘要: A centralizer assembly and method for manufacturing a centralizer assembly. The centralizer assembly includes a mandrel including a first raised region having a first diameter, and a turned-down region having a second diameter, the second diameter being smaller than the first diameter. The centralizer assembly also includes a first stop segment extending at least partially around the mandrel in the turned-down region, and a centralizer disposed at least partially in the turned-down region. The first stop segment is received between axial extents of the centralizer, to limit a range of motion of the centralizer relative to the mandrel.

    APPARATUS FOR AND METHOD OF SECURING A CENTRALIZER TO A TUBULAR

    公开(公告)号:US20180135364A1

    公开(公告)日:2018-05-17

    申请号:US15701776

    申请日:2017-09-12

    IPC分类号: E21B19/24 E21B17/10 B23P11/00

    摘要: A bow-spring centralizer (6) includes bow springs (5), moving collars (11) secured to each end of each bow spring, and interlocked stop collars (10). Extendable collars (8) may each be formed of a moving collar (11) movably interlocked with a stop collar (10). The centralizer (6) may optionally be formed from a tube cut using a laser to create two extendable collars coupled by bow springs. Each extendable collar may include heads integrally formed on extensions 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 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. The stop collars may include or cooperate with one or more fingers extending along a casing to be secured by a sleeve that forms an interference fit about the casing.

    Apparatus for securing a centralizer to a tubular

    公开(公告)号:US09759023B2

    公开(公告)日:2017-09-12

    申请号:US14320099

    申请日:2014-06-30

    IPC分类号: E21B19/24 E21B17/10 B23P11/00

    摘要: An apparatus for securing to a tubular includes a tubular base configured to be disposed around the tubular, the base defining a longitudinal central axis therethrough and including axial ends. The apparatus includes fingers extending from at least one of the axial ends of the base and substantially parallel to the longitudinal central axis. The fingers are separated circumferentially apart by slots, at least one of which does not extend across the base. The apparatus includes a sleeve configured to be disposed around the tubular and slid straight axially over the fingers, such that an elasticity of the sleeve provides a radially-inward gripping force on the fingers. The gripping force prevents the base, the plurality of fingers, and the sleeve from rotating relative to the tubular and from moving axially relative to the tubular. The sleeve may abut a stop wall of the base when slid onto the fingers.

    TURNED-DOWN CENTRALIZER SUB ASSEMBLY
    8.
    发明申请
    TURNED-DOWN CENTRALIZER SUB ASSEMBLY 审中-公开
    向下集中式组件

    公开(公告)号:US20160186505A1

    公开(公告)日:2016-06-30

    申请号:US14978466

    申请日:2015-12-22

    IPC分类号: E21B17/10

    CPC分类号: E21B17/1028

    摘要: A centralizer assembly and method for manufacturing a centralizer assembly. The centralizer assembly includes a mandrel including a first raised region having a first diameter, and a turned-down region having a second diameter, the second diameter being smaller than the first diameter. The centralizer assembly also includes a first stop segment extending at least partially around the mandrel in the turned-down region, and a centralizer disposed at least partially in the turned-down region. The first stop segment is received between axial extents of the centralizer, to limit a range of motion of the centralizer relative to the mandrel.

    摘要翻译: 一种用于制造扶正器组件的扶正器组件和方法。 所述扶正器组件包括心轴,所述心轴包括具有第一直径的第一凸起区域和具有第二直径的折弯区域,所述第二直径小于所述第一直径。 所述扶正器组件还包括至少部分地围绕所述折弯区域中的所述心轴延伸的第一止动段,以及至少部分地设置在所述向下的区域中的扶正器。 第一止动段被接收在扶正器的轴向范围之间,以限制扶正器相对于心轴的运动范围。

    MULTI-STAGE CEMENTING TOOL AND METHOD
    10.
    发明申请
    MULTI-STAGE CEMENTING TOOL AND METHOD 有权
    多级成型工具和方法

    公开(公告)号:US20160138367A1

    公开(公告)日:2016-05-19

    申请号:US14940707

    申请日:2015-11-13

    IPC分类号: E21B34/12 E21B33/13 E21B34/06

    摘要: A downhole tool, multi-stage cementing tool, and method for cementing. The tool includes a body having a bore axially therethrough and an opening radially therethrough, and a first sleeve positioned in the bore of the body. The first sleeve has an opening radially therethrough that is axially aligned with the opening of the body when the downhole tool is in a first configuration. An inner surface of the first sleeve defines a first seat. The tool also includes a second sleeve positioned in the first sleeve, with the second sleeve being aligned with the opening of the first sleeve and preventing fluid flow therethrough when the tool is in the first configuration. The second sleeve is configured to move axially and engage the first seat of the first sleeve when the tool is in a second configuration, so as to resist relative rotation between the first and second sleeves.

    摘要翻译: 井下工具,多级固井工具和固井方法。 该工具包括具有轴向穿过其中的孔和径向穿过其中的开口的本体,以及定位在主体的孔中的第一套筒。 当井下工具处于第一构造时,第一套筒具有径向穿过的开口,其与主体的开口轴向对齐。 第一套筒的内表面限定第一座椅。 该工具还包括位于第一套筒中的第二套筒,其中第二套筒与第一套筒的开口对准,并且当工具处于第一配置时防止流体流过其中。 第二套筒构造成当工具处于第二构造时轴向移动并接合第一套筒的第一座椅,以便抵抗第一和第二套筒之间的相对旋转。