DEGRADABLE ELEMENTS FOR DOWNHOLE APPLICATIONS

    公开(公告)号:US20180119508A1

    公开(公告)日:2018-05-03

    申请号:US15340166

    申请日:2016-11-01

    CPC classification number: E21B33/12 E21B29/00 E21B43/26

    Abstract: In one aspect, a downhole element for use in a wellbore with a wellbore fluid is disclosed, including a body formed from a dissolvable material to degrade at a first rate when exposed to the wellbore fluid, at least one cavity defined by the body, a degradation agent disposed within the at least one cavity, wherein the at least one cavity selectively releases the degradation agent and the degradation agent degrades the body at a second rate when exposed to the wellbore fluid and the dissolvable material.

    Degradable casing seal construction for downhole applications

    公开(公告)号:US09777550B2

    公开(公告)日:2017-10-03

    申请号:US14552003

    申请日:2014-11-24

    CPC classification number: E21B33/1208

    Abstract: In one aspect, a degradable apparatus is disclosed, including: an inner core with a first degradation rate in a downhole environment; an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing an inner core with a first degradation rate in a downhole environment; providing an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment; sealing the downhole zone with the outer sheath; exposing the outer sheath to the downhole environment; and exposing the inner core to the downhole environment.

    DEGRADABLE MATERIAL FOR DOWNHOLE APPLICATIONS
    35.
    发明申请
    DEGRADABLE MATERIAL FOR DOWNHOLE APPLICATIONS 审中-公开
    可降解材料用于井下应用

    公开(公告)号:US20160145485A1

    公开(公告)日:2016-05-26

    申请号:US14551976

    申请日:2014-11-24

    Abstract: In one aspect, degradable material is disclosed, including: a polyurethane component with a first degradation rate in a downhole environment; and a corrosive additive component with a second degradation rate that is higher than a first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing a polyurethane component with a first degradation rate in a downhole environment; providing a corrosive additive component with a second degradation rate that is higher than a first degradation rate in the downhole environment; mixing the polyurethane component and the corrosive additive component to form a degradable material; sealing the downhole zone with the degradable material; exposing the degradable material to the downhole environment; and degrading the degradable material.

    Abstract translation: 一方面,公开了可降解材料,包括:在井下环境中具有第一降解速率的聚氨酯组分; 以及具有比井下环境中的第一降解速率高的第二降解速率的腐蚀性添加剂组分。 另一方面,公开了临时密封井下区域的方法,包括:在井下环境中提供具有第一降解速率的聚氨酯组分; 提供具有比井下环境中的第一降解速率高的第二降解速率的腐蚀性添加剂组分; 混合聚氨酯组分和腐蚀性添加剂组分以形成可降解材料; 用可降解材料密封井下区域; 将可降解材料暴露于井下环境; 并降解可降解材料。

    ACTUATED PACKER ARRANGEMENT HAVING A DEGRADABLE LAYER FOR A SEAL
    36.
    发明申请
    ACTUATED PACKER ARRANGEMENT HAVING A DEGRADABLE LAYER FOR A SEAL 审中-公开
    具有可拆卸层的致动包装装置用于密封

    公开(公告)号:US20130025849A1

    公开(公告)日:2013-01-31

    申请号:US13190843

    申请日:2011-07-26

    CPC classification number: E21B33/1208

    Abstract: A packer arrangement for forming a seal between an inner tubular string and an outer tubular string in a borehole includes: an outer tubular string member defining an axial flowbore and having an associated packer setting mechanism; a packer device disposed at least partially within the outer tubular string member to form a seal against an inner tubular string, the packer device including a degradable layer for temporarily and at least partially protecting the packer device; an inner tubular string member to be disposed within the flowbore of the outer tubular string member; and an actuator carried on the inner tubular string member, the actuator being operable to actuate the packer setting mechanism to set the packer device against the inner tubular string.

    Abstract translation: 一种用于在钻孔内形成内管柱和外管柱之间的密封的封隔器装置包括:限定轴流孔并具有相关封隔器设置机构的外管柱构件; 封隔器装置,其至少部分地设置在所述外管状构件内以形成抵靠内管柱的密封,所述封隔器装置包括用于暂时且至少部分地保护所述封隔器装置的可降解层; 内管状构件,其设置在所述外管状构件的所述流道内; 承载在所述内管状管件上的致动器,所述致动器可操作以致动所述封隔器设置机构以将所述封隔器装置设置在所述内管柱上。

    Expandable packer with anchoring feature
    37.
    发明申请
    Expandable packer with anchoring feature 有权
    具有锚固功能的可扩展封隔器

    公开(公告)号:US20050161229A1

    公开(公告)日:2005-07-28

    申请号:US11082175

    申请日:2005-03-17

    Abstract: An expandable packer or anchor is disclosed. It features a gripping device integral to or mounted in a sleeve over the mandrel. Upon expansion, a sealing element engages an outer tubular and the gripping device, such as wickers on slips, preferably digs into the outer tubular. The expansion is preferably by pressure and can incorporate pressure intensifiers delivered by slick line or wire line. Release is accomplished by a release tool, which is delivered on slick line or wire line. It stretches the anchor or packer longitudinally, getting it to retract radially, for release. The release tool can be combined with packers or anchors that have a thin walled feature in the mandrel, to release by pulling the mandrel apart.

    Abstract translation: 公开了一种可膨胀封隔器或锚栓。 它具有与心轴上的套筒一体或安装在套筒上的夹持装置。 在膨胀时,密封元件与外管接合,并且夹持装置,例如滑盖上的木门,优选地挖入外管。 膨胀优选地是通过压力并且可以包括由光滑线或有线线递送的压力增强器。 释放是通过释放工具完成的,该释放工具在光滑线或有线线上传送。 纵向延伸锚或封隔器,让其径向收缩,释放。 释放工具可以与在心轴中具有薄壁特征的封隔器或锚固件组合,以通过将心轴分开来释放。

    RELEASABLE LOCKING ASSEMBLY, SYSTEM, AND METHOD

    公开(公告)号:US20220243546A1

    公开(公告)日:2022-08-04

    申请号:US17162397

    申请日:2021-01-29

    Abstract: A releasable locking assembly including a housing, a body defining a longitudinally extending flow bore having a first end and a second end disposed within the housing, a window defined through a radial wall of the body, a locking segment having an outer convex surface of a first radius defined by distance from a first axis, and an inner concave surface of a second radius defined by distance from a second axis different than the first axis, the locking segment disposed at least in part in the window, and a support member disposed within the body and moveable between a position where the support member drives the locking segment into engagement with the housing and a position where the support member unsupports the locking segment with regard to engagement with the housing.

    REMOVABLE NOZZLE FOR A DOWNHOLE VALVE

    公开(公告)号:US20220228463A1

    公开(公告)日:2022-07-21

    申请号:US17579418

    申请日:2022-01-19

    Abstract: A method of manufacturing a valve of a tool for use downhole includes changing a flow characteristic of the valve. A load is applied to a first nozzle secured in a housing of the valve via a first release member, wherein a magnitude of the load is greater than a release threshold of the first release member, to release the first release member. The first nozzle is removed from the housing, and a second nozzle is secured in the housing via a second release member.

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