Downhole logging tool
    1.
    发明授权

    公开(公告)号:US11867049B1

    公开(公告)日:2024-01-09

    申请号:US17868569

    申请日:2022-07-19

    CPC classification number: E21B47/01 E21B47/26

    Abstract: An untethered downhole tool includes a first body, a second body, a logging sensor, a motor, and a controller. Each of the first and second bodies includes a housing that defines an inner volume and a magnetic anchor configured, in an active state, to attach the body to a wellbore tubular. The motor is attached to one of the first or second bodies and coupled to a spooler. The controller is communicably coupled to the motor and the first and second magnetic anchors. The controller is configured to adjust one of the first or second magnetic anchors from the active state to an inactive state; and activate the motor to operate the spooler to spool the cable from the spooler to increase a length of a portion of the cable between the spooler and the detached first or second body.

    Targeted Downhole Delivery
    2.
    发明申请

    公开(公告)号:US20210017827A1

    公开(公告)日:2021-01-21

    申请号:US16514752

    申请日:2019-07-17

    Abstract: A system and method for targeted delivery of treatment material to a specified depth in a wellbore, including placing a container to the specified depth and allowing the container to fail at the depth due to wellbore pressure to release the treatment material.

    DETERMINING A LOCATION OF A TOOL IN A TUBULAR

    公开(公告)号:US20220334286A1

    公开(公告)日:2022-10-20

    申请号:US17234555

    申请日:2021-04-19

    Abstract: Techniques for operating a tool include moving a tool in a magnetized tubular member that generates a stationary magnetic field. The tool includes a housing that defines an interior volume, a first magnetic field sensor positioned on or within the housing at a first location, and a second magnetic field sensor positioned on or within the housing at a second location apart from the first location by a separation distance. The techniques further include detecting a first magnetic field amplitude distribution sensed by the first magnetic field sensor started at a first time instant; detecting a second magnetic field amplitude distribution sensed by the second magnetic field sensor started at a second time instant; determining a time difference between the first and second time instants based on the identified magnetic field amplitudes; and determining a speed of the tool based on the separation distance and the time difference.

    METHOD AND SYSTEM FOR LOCATING A DOWNHOLE TOOL IN STEEL-CASED HOLES

    公开(公告)号:US20250116188A1

    公开(公告)日:2025-04-10

    申请号:US18911712

    申请日:2024-10-10

    Abstract: A method for locating a downhole tool in a wellbore involves obtaining, by the downhole tool, a pressure measurement in the wellbore, generating a first depth estimate based on the pressure measurement, and anticipating a passing of the downhole tool by a collar, based on the first depth estimate and a known depth of the collar. The method further involves, based on the anticipating of the passing of the downhole tool by the collar, performing, by the downhole tool, a collar detection, and based on the collar detection resulting in a detection of the collar: generating an updated depth estimate, and reporting the updated depth estimate.

    DOWNHOLE LOGGING TOOL
    6.
    发明公开

    公开(公告)号:US20240125227A1

    公开(公告)日:2024-04-18

    申请号:US18392431

    申请日:2023-12-21

    CPC classification number: E21B47/01 E21B47/26

    Abstract: An untethered downhole tool includes a first body, a second body, a logging sensor, a motor, and a controller. Each of the first and second bodies includes a housing that defines an inner volume and a magnetic anchor configured, in an active state, to attach the body to a wellbore tubular. The motor is attached to one of the first or second bodies and coupled to a spooler. The controller is communicably coupled to the motor and the first and second magnetic anchors. The controller is configured to adjust one of the first or second magnetic anchors from the active state to an inactive state; and activate the motor to operate the spooler to spool the cable from the spooler to increase a length of a portion of the cable between the spooler and the detached first or second body.

    SEMI-PERMANENT DOWNHOLE SENSOR TOOL

    公开(公告)号:US20230038860A1

    公开(公告)日:2023-02-09

    申请号:US17394813

    申请日:2021-08-05

    Abstract: A method and a system for collecting data at a fixed point in a wellbore are provided. An exemplary method includes dropping an untethered measurement tool (UMT) in the wellbore, switching a first magnet to drop a ballast from the UMT at a ballast drop condition, switching a second magnet to attach the UMT to a wall of the wellbore at a wall attachment condition. Data is collected in the UMT while the UMT is attached to the wall of the wellbore. The second magnet is switched to release the UMT from the wall of the wellbore at a wall release condition. The UMT is collected from the wellbore and the data is downloaded from the UMT.

    DISSOLVABLE BALLAST FOR UNTETHERED DOWNHOLE TOOLS

    公开(公告)号:US20250129680A1

    公开(公告)日:2025-04-24

    申请号:US18989597

    申请日:2024-12-20

    Abstract: A method involves mixing metallic particles and a liquefied polymer to form a mixture, placing the mixture within a mold, placing a magnet in the vicinity of the mixture within the mold, thereby causing the metallic particles to position themselves in a self-assembly formation within the mixture in response to a magnetic field generated by the magnet, and solidifying the liquefied polymer, such that a polymer matrix is formed. The metallic particles are distributed and secured in the self-assembly formation throughout the polymer matrix, thereby forming a ballast for an untethered downhole tool configured to be lowered into a well formed in a subterranean formation. The polymer matrix is configured to dissolve in response to being exposed to downhole fluid within the well at specified downhole conditions.

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