Apparatus for capturing axial force on an inner drive member

    公开(公告)号:US12215586B2

    公开(公告)日:2025-02-04

    申请号:US18341366

    申请日:2023-06-26

    Inventor: Max A. Metcalf

    Abstract: A spindle with a mechanism for transferring axial force from an inner drive assembly to an outer drive assembly. The spindle's inner drive shaft is connected to an inner member of a dual-rod pipe by a drive rod having a sliding sleeve. The sleeve is fixed rotationally with the drive shaft, but not axially. When axial force drives the drive rod toward the drive member of the spindle, the sleeve contacts a stop member which is paired to the outer drive assembly. The stop member may be a pair of dowel pins. Axial force is thereby transferred from the inner member to the outer member, allowing such forces to be absorbed by the outer member's larger drive components.

    Null point depth calibration
    7.
    发明授权

    公开(公告)号:US12078053B2

    公开(公告)日:2024-09-03

    申请号:US17881804

    申请日:2022-08-05

    Inventor: Scott B. Cole

    CPC classification number: E21B47/092 E21B7/046 G01V3/081 G01V3/38

    Abstract: A calibration method for calibrating an underground beacon and tracker system for use with horizontal directional drilling. The beacon emits a magnetic field, which is received at an above-ground receiving antenna. The antenna is used to locate front and rear null points in the emitted field. The vertical and horizontal offset between the null points is determined to locate the beacon. Then, the magnetic field strength is determined at one of the null points. This value may be used to calculate or update a calibration constant. The calibration constant is then used in subsequent locating step while the characteristics of the underground environment surrounding the beacon remain similar.

    Milling tool
    8.
    发明授权

    公开(公告)号:US12071824B2

    公开(公告)日:2024-08-27

    申请号:US17338844

    申请日:2021-06-04

    CPC classification number: E21B29/002 E21B23/14

    Abstract: A milling tool for use in a cased wellbore. The milling tool has a housing having a plurality of pockets formed therein. A blade is installed within each pocket and is movable between open and closed positions. The blade projects from the pocket when in an open position. Rotation of the housing causes the blades to move to an open position. The blades remain in a closed position when the housing is not rotating.

    Beacon optimization
    9.
    发明授权

    公开(公告)号:US12069590B2

    公开(公告)日:2024-08-20

    申请号:US17531901

    申请日:2021-11-22

    CPC classification number: H04W52/245 E21B7/046 G01R21/06

    Abstract: An optimizable beacon and method of using the same. The beacon has an onboard power source with a finite capacity. The system uses a capacitor bank to adjust the capacitance of the beacon, thereby maximizing the signal provided considering conditions, rather than simply using a theoretical value. With the specified capacitance being used, the beacon may be optimized in both a high and low power mode by driving the current to ensure the measured power is greater than or equal to a target. The system may also have a motion sensor to toggle the power off, or to a low-power mode, when the beacon is moving, and location measurements are not taking place. The optimization process may also consider the chemistry of the battery being utilized.

    Micro frac plug
    10.
    发明授权

    公开(公告)号:US12065900B2

    公开(公告)日:2024-08-20

    申请号:US17981792

    申请日:2022-11-07

    Applicant: MicroPlug, LLC

    CPC classification number: E21B33/1208 E21B33/138 E21B43/16 E21B43/26

    Abstract: A micro frac plug used to seal individual perforations formed in a casing installed within a subterranean wellbore. The plug comprises an insert element and a deformable sleeve. The insert element is received and retained within a medial section of the sleeve. The plug is sized to be lodged in or seated on a single perforation. The plug blocks fluid from flowing through the perforation.

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