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20 条记录 (耗时 0.02 秒)

    Tubular airlock assembly
    2.
    发明授权
    Tubular airlock assembly 有权

    公开(公告)号：US10208564B2

    公开(公告)日：2019-02-19

    申请号：US15286306

    申请日：2016-10-05

    申请人： NCS Multistage, LLC

    发明人： John Ravensbergen ,  Juan Montero

    IPC分类号： E21B34/06 ,  E21B17/00 ,  E21B43/12 ,  E21B43/24

    摘要： A rupture assembly that may be employed in the oilfield industry facilitates the deployment of a tubing string in a well. The rupture assembly may be installed at the bottom of the tubing string for the purpose of trapping air in a lateral section of the tubing, between the rupture assembly and an upper sealing assembly. As a result, the buoyant force in the lateral section reduces the drag encountered while running the tubing through the casing, thereby significantly reducing rig time, or permitting operations where none were possible previously. Once at landing depth, surface pressure may be added to burst and remove the seal and rupture assemblies.

    TUBULAR AIRLOCK ASSEMBLY
    3.
    发明申请
    TUBULAR AIRLOCK ASSEMBLY 审中-公开

    公开(公告)号：US20170096875A1

    公开(公告)日：2017-04-06

    申请号：US15286306

    申请日：2016-10-05

    申请人： NCS Multistage, LLC

    发明人： John Ravensbergen ,  Juan Montero

    IPC分类号： E21B34/06 ,  E21B17/00 ,  E21B43/12

    CPC分类号： E21B34/063 ,  E21B17/00 ,  E21B17/012 ,  E21B17/04 ,  E21B43/12 ,  E21B43/2406

    摘要： A rupture assembly that may be employed in the oilfield industry facilitates the deployment of a tubing string in a well. The rupture assembly may be installed at the bottom of the tubing string for the purpose of trapping air in a lateral section of the tubing, between the rupture assembly and an upper sealing assembly. As a result, the buoyant force in the lateral section reduces the drag encountered while running the tubing through the casing, thereby significantly reducing rig time, or permitting operations where none were possible previously. Once at landing depth, surface pressure may be added to burst and remove the seal and rupture assemblies.

    Electrically actuated downhole flow control apparatus
    7.
    发明授权
    Electrically actuated downhole flow control apparatus 有权

    公开(公告)号：US10808509B2

    公开(公告)日：2020-10-20

    申请号：US16051391

    申请日：2018-07-31

    申请人： NCS Multistage Inc.

    发明人： Don Getzlaf ,  John Ravensbergen ,  Brock Gillis

    IPC分类号： E21B43/12 ,  E21B34/06 ,  E21B34/10

    摘要： There is provided a flow control apparatus including a housing, a port, a flow control member, a sensor, and a trigger. The housing includes a housing passage. The port extends through the housing. The flow control member includes a fluid responsive surface, and is configured for displacement, relative to the port, such that fluid communication is effected between the port and the housing passage. The sensor is coupled to the housing for sensing an actuating signal. The trigger is configured for effecting fluid communication between the housing passage and the fluid responsive surface, in response to the sensing of an actuating signal by the sensor, for effecting displacement of the flow control member.

    FRACTURING VALVE AND FRACTURING TOOL STRING
    8.
    发明申请
    FRACTURING VALVE AND FRACTURING TOOL STRING 审中-公开

    公开(公告)号：US20180230776A1

    公开(公告)日：2018-08-16

    申请号：US15887264

    申请日：2018-02-02

    申请人： NCS Multistage, Inc.

    发明人： Donald Getzlaf ,  John Ravensbergen ,  Douglas James Brunskill ,  Shawn Leggett

    IPC分类号： E21B34/14 ,  E21B43/26 ,  E21B34/12 ,  E21B34/00

    摘要： A fracturing valve comprising a tubular mandrel having a through bore continuous with a tubing string, and a frac window through the side of the tubular mandrel. An outer sleeve is radially disposed around the tubular mandrel. The outer sleeve includes a sleeve port in a sidewall. The tubular mandrel slides relative to the sleeve by application and release of set down weight on a coiled tubing string. When the valve is closed, there is no fluid communication from the tubing string out of the frac window. When the valve is open, fluid communication from the tubing string is enabled. The valve may be installed in a downhole tool having a perforation device. The tool string can be used with one sealing element as the tool is pulled up the hole isolating lower perforations, or with two sealing elements to allow pin-point treatments isolating perforations both up and downhole.

    Casing float tool
    10.
    发明授权
    Casing float tool 有权

    公开(公告)号：US10883315B2

    公开(公告)日：2021-01-05

    申请号：US16851667

    申请日：2020-04-17

    申请人： NCS MULTISTAGE INC.

    发明人： Donald Getzlaf ,  Marty Stromquist ,  John Ravensbergen ,  David Devlin ,  Douglas Braden ,  Travis Harris

    IPC分类号： E21B7/20 ,  E21B33/14 ,  E21B21/10 ,  E21B17/14 ,  E21B34/06 ,  E21B17/08

    摘要： A rupture disc assembly and a float tool incorporating the rupture disc assembly is disclosed. The rupture disc assembly may include a rupture disc assembly comprising a rupture disc, an upper tubular portion and a lower tubular portion, and a securing mechanism for holding the rupture disc between the upper and lower tubular portions. A float tool for creating a buoyant chamber in a casing string may include the rupture disc assembly and a sealing device for sealing the lower end of the casing string, the buoyant, sealed chamber may be created there between. In operation, applied fluid pressure causes the rupture disc to move downward. The rupture disc may be shattered by contact with a surface on the lower tubular portion. Full casing internal diameter may be restored in the region where the rupture disc formerly sealed the casing.