Differential iron roughneck
    12.
    发明授权

    公开(公告)号:US11313185B2

    公开(公告)日:2022-04-26

    申请号:US16785859

    申请日:2020-02-10

    Abstract: A differential iron roughneck for making or breaking a pipe connection includes: at least one first gripping cylinder for delivering torque to a first pipe; at least one second gripping cylinder for delivering and receiving torque to and from a second pipe; and a differential gearbox including: a primary shaft delivering torque to the at least one first gripping cylinder; and a secondary shaft receiving torque from the at least one second gripping cylinder, where the primary shaft and the secondary shaft rotate at different speeds.

    Method and apparatus to cure drilling losses with an electrically triggered lost circulation material

    公开(公告)号:US11261679B1

    公开(公告)日:2022-03-01

    申请号:US17003162

    申请日:2020-08-26

    Abstract: Provided is a system for emplacing an electrically activated lost circulation material within a wellbore. The system may comprise a bottom hole assembly connected to a drill string, with an activation tool that may be provided along the bottom hole assembly. The system may comprise an activation tool with a non-conductive isolation sleeve having an inner bore, electrodes exposed to an outer surface of the isolation sleeve, conductive cables electrically connecting the electrodes to one of an anode terminal and a cathode terminal, and a seat extending into the inner bore. Further provided is a method for plugging a loss zone in a wellbore that may use at least one activation tool. The method may include circulating an electrically activated lost circulation material to the loss zone and delivering electricity from a power source to electrodes of the activation tool to solidify the electrically activated lost circulation material.

    DIFFERENTIAL IRON ROUGHNECK
    15.
    发明申请

    公开(公告)号:US20210246741A1

    公开(公告)日:2021-08-12

    申请号:US16785859

    申请日:2020-02-10

    Abstract: A differential iron roughneck for making or breaking a pipe connection includes: at least one first gripping cylinder for delivering torque to a first pipe; at least one second gripping cylinder for delivering and receiving torque to and from a second pipe; and a differential gearbox including: a primary shaft delivering torque to the at least one first gripping cylinder; and a secondary shaft receiving torque from the at least one second gripping cylinder, where the primary shaft and the secondary shaft rotate at different speeds.

    Eutectic alloy system for casing-casing annulus cement repair

    公开(公告)号:US12228010B1

    公开(公告)日:2025-02-18

    申请号:US18405571

    申请日:2024-01-05

    Abstract: A method includes running a eutectic alloy system downhole in a wellbore including a first casing string and a second casing string therein, activating a differential valve tool within the second casing to generate a primary annular seal within a casing-casing annulus defined between the first casing string and second casing string, pumping a flushing fluid into the casing-casing annulus above the primary annular seal via a first ported collar, melting a eutectic alloy blanket into a molten alloy within the flushing fluid in the casing-casing annulus via a heater, solidifying the molten alloy to establish a supplemental seal above the primary annular seal in the casing-casing annulus between the first casing string and second casing string, and pumping cement into the casing-casing annulus above the supplemental seal to form a cement column in the casing-casing annulus via a second ported collar.

    Method and apparatus for cementing a casing in a wellbore

    公开(公告)号:US11661816B2

    公开(公告)日:2023-05-30

    申请号:US16874773

    申请日:2020-05-15

    CPC classification number: E21B33/16

    Abstract: A method of cementing a casing in a wellbore extending from an Earth's surface into a subsurface includes providing a tube having a bi-frustoconical shape. The bi-frustoconical shape is defined by an upper tube part having an inverted frustoconical shape, a lower tube part having a frustoconical shape, and a waist intermediate between the upper tube part and the lower tube part. The tube is positioned in an annulus formed between the casing and a wall of the wellbore from a surface opening of the annulus. The tube is urged in a direction down the annulus and along the casing until the tube lands on a collar radially projecting from an outer surface of the casing into the annulus.

    Downhole cable deployment
    19.
    发明授权

    公开(公告)号:US11572752B2

    公开(公告)日:2023-02-07

    申请号:US17184232

    申请日:2021-02-24

    Abstract: A method of deploying a flexible cable in a wellbore includes carrying, by a tubular assembly, a cable spool cartridge into the wellbore. The cable spool cartridge is attached to an exterior of the tubular assembly and contains the flexible cable. A first end of the flexible cable is attached to a buoyancy device, and the buoyancy device is releasably attached to the cable spool cartridge. A fluid is flowed by the tubular assembly in a downhole direction through an interior of the tubular assembly and in an uphole direction within an annulus at least partially defined by the exterior of the tubular assembly. The fluid has a greater density than the buoyancy device. The buoyancy device is released by the cable spool cartridge, and the buoyancy device is configured to travel after release in the uphole direction with the fluid and thereby pull the flexible cable from the cable spool cartridge and into the annulus.

    METHOD AND APPARATUS FOR CEMENTING A CASING IN A WELLBORE

    公开(公告)号:US20210355783A1

    公开(公告)日:2021-11-18

    申请号:US16874773

    申请日:2020-05-15

    Abstract: A method of cementing a casing in a wellbore extending from an Earth's surface into a subsurface includes providing a tube having a bi-frustoconical shape. The bi-frustoconical shape is defined by an upper tube part having an inverted frustoconical shape, a lower tube part having a frustoconical shape, and a waist intermediate between the upper tube part and the lower tube part. The tube is positioned in an annulus formed between the casing and a wall of the wellbore from a surface opening of the annulus. The tube is urged in a direction down the annulus and along the casing until the tube lands on a collar radially projecting from an outer surface of the casing into the annulus.

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