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    DISSOLVABLE BRIDGE PLUG ASSEMBLY
    3.
    发明申请
    DISSOLVABLE BRIDGE PLUG ASSEMBLY 审中-公开

    公开(公告)号：US20180171746A1

    公开(公告)日：2018-06-21

    申请号：US15737128

    申请日：2016-08-22

    Applicant: Parker-Hannifin Corporation

    Inventor： Paul Dudzinski ,  Daniel J. Funke ,  Kenneth W. Cornett

    IPC: E21B33/128 ,  E21B33/129 ,  E21B33/134 ,  E21B33/12

    CPC classification number: E21B33/1285 ,  E21B33/1204 ,  E21B33/1208 ,  E21B33/128 ,  E21B33/1291 ,  E21B33/1293 ,  E21B33/134

    Abstract: A bridge plug assembly includes a tee bushing including a base and a stem, a coned bushing having a conical section and defining a bore that is configured to receive the stem, a molded assembly that is moveable over the conical section from an initial position to a set position, and a seal. The conical section is configured as a wedge such that when the stem is forced into the conical section during a setting process, the molded assembly and the seal move over the conical section from the initial position to the set position and expand radially outward by a wedge action of the conical section against a well casing. The molded assembly includes a slip assembly having a plurality of slip segments, over-molded with an elastomer. All components are made of dissolvable materials so as to reopen the well casing over time to its original inner diameter.

    Method of well operation
    7.
    发明授权
    Method of well operation 有权

    公开(公告)号：US09683420B2

    公开(公告)日：2017-06-20

    申请号：US14384938

    申请日：2013-03-08

    Applicant: Interwell Technology AS

    Inventor： Michael Skjold

    IPC: E21B17/00 ,  E21B29/02 ,  E21B33/12 ,  E21B36/00

    CPC classification number: E21B29/02 ,  E21B17/00 ,  E21B33/1204 ,  E21B36/008

    Abstract: Method and use of abandoning a well (2) or removing a well element (10) which is arranged in a well (2) by melting surrounding materials or by melting the well element (10), the method comprising the steps of; providing an amount of a heat generating mixture (6), the amount (6) being adapted to perform one of the desired operations, positioning the heat generating mixture (6) at a melting position in the well (2), igniting the heat generating mixture (6), thereby melting the surrounding materials in the well (2) or melting the well element (10).

    Fluid vent assembly and method of venting fluid
    8.
    发明授权
    Fluid vent assembly and method of venting fluid 有权

    公开(公告)号：US09637988B2

    公开(公告)日：2017-05-02

    申请号：US14390602

    申请日：2013-04-02

    Applicant: RMSpumptools Limited

    Inventor： Stuart David Gordon

    IPC: E21B34/00 ,  E21B29/08 ,  E21B34/08 ,  E21B34/06 ,  E21B43/12 ,  E21B33/12 ,  E21B34/14

    CPC classification number: E21B29/08 ,  E21B33/1204 ,  E21B34/063 ,  E21B34/08 ,  E21B34/14 ,  E21B43/128

    Abstract: A housing for a downhole tool, having a fluid vent assembly comprising a port passing through the wall of the housing to transmit fluid through the port when the port is open, a sealing device to seal the port, and a cutting device to disrupt the sealing device and permit transmission of fluid through the port. The cutting device is driven axially through the sealing device without relative rotation between the two. The cutting device has an asymmetric blade to cut a coupon from the sealing device by a gradual and progressive disruption of the closure, typically cutting through only a portion the closure device, so that the coupon cut from the closure device remains attached to the closure device when the closure device is ruptured to open the seal. Typically the downhole tool comprises a downhole pump, and the housing comprises the shroud of the pump.

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