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    Sliding mode control techniques for steerable systems
    1.
    发明授权
    Sliding mode control techniques for steerable systems 有权

    公开(公告)号：US10947784B2

    公开(公告)日：2021-03-16

    申请号：US16474944

    申请日：2017-12-29

    Applicant: HALLIBURTON ENERGY SERVICES, INC.

    Inventor： Umut Zalluhoglu ,  Yiming Zhao

    IPC: E21B7/10 ,  E21B7/06 ,  E21B41/00 ,  E21B44/00 ,  E21B47/022 ,  E21B47/12

    Abstract: A method for directional drilling including defining, by a sliding mode controller, a sliding hypersurface for reducing a trajectory error in one or more error dimensions; determining a current trajectory error between a current trajectory of a directional drilling tool and a reference trajectory for a curved path, the current trajectory error corresponding to a current error position in the one or more error dimensions; calculating a sliding mode vector originating from the current error position and substantially conforming to the sliding hypersurface in the one or more error dimensions; determining a feedback control input for the directional drilling tool based on the sliding mode vector; instructing the directional drilling tool to generate a wellbore path according to the feedback control input; and updating the current trajectory error based on either a change in position or a change in attitude of the directional drilling tool.

    USING AN ADJUSTED DRIVE PULSE IN FORMATION EVALUATION
    3.
    发明申请
    USING AN ADJUSTED DRIVE PULSE IN FORMATION EVALUATION 审中-公开

    公开(公告)号：US20180372907A1

    公开(公告)日：2018-12-27

    申请号：US15755473

    申请日：2015-09-17

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Jason D. Dykstra ,  Yiming Zhao ,  Xingyong Song

    IPC: G01V3/38 ,  G01V1/30 ,  G01V1/46 ,  G01V1/48 ,  G01V3/14 ,  G01V3/36

    Abstract: A method of evaluating a subterranean formation includes conveying a tool along a borehole. The tool includes a transmitter that transmits a drive pulse and a receiver that receives at least one formation response to the drive pulse. The method further includes calculating a signal-to-noise ratio of the at least one formation response and comparing the signal-to-noise ratio to a programmable threshold. The method further includes determining, based on the comparing, an adjusted drive pulse to transmit and transmitting the adjusted drive pulse. The method further includes and receiving at least one formation response to the adjusted drive pulse and deriving formation data from the at least one formation response to the adjusted drive pulse. The method further includes displaying a representation of the formation based on the formation data.

    Mitigating vibrations in a drilling system
    6.
    发明授权
    Mitigating vibrations in a drilling system 有权

    公开(公告)号：US11015425B2

    公开(公告)日：2021-05-25

    申请号：US15529968

    申请日：2016-07-29

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Yiming Zhao ,  Jason Daniel Dykstra

    IPC: E21B44/04 ,  E21B44/00 ,  E21B3/02 ,  G05B19/042

    Abstract: A method includes generating a torsional wave that propagates in a drill string having a drill bit coupled at a first end of the drill string and a top drive coupled at a second end of the drill string, and determining first and second components of the torsional wave. The first component propagates from the drill bit to the top drive and the second component propagates from the top drive to the drill bit. The method further includes calculating a first control signal to mitigate the first component, calculating a second control signal to regulate the second component, and generating a torque command based on the first and second control signals to control the top drive to dampen the torsional wave.

    SYSTEMS AND METHODS TO IMPROVE DIRECTIONAL DRILLING
    7.
    发明申请
    SYSTEMS AND METHODS TO IMPROVE DIRECTIONAL DRILLING 有权

    公开(公告)号：US20210071477A1

    公开(公告)日：2021-03-11

    申请号：US16640329

    申请日：2017-12-28

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Yiming Zhao ,  Umut Zalluhoglu ,  Julien Mark ,  Robert Darbe

    IPC: E21B7/06 ,  E21B44/02 ,  E21B49/00 ,  G06Q10/06

    Abstract: The disclosed embodiments include systems and methods to improve down-hole drilling. In one embodiment, a method to improve downhole drilling includes receiving a well plan, where the well plan is indicative of a well path to form a borehole of a hydrocarbon well is provided. The method also includes receiving measurements indicative of a previously-drilled section of the borehole. The method further includes generating, based on the measurements, a trajectory of the borehole, where the trajectory is a function of a depth. The method further includes providing the trajectory of the borehole to a Model Predictive Controller. The method further includes steering a tool towards the well path based on an output of the Model Predictive Controller.

    ONLINE ACTIVE VIBRATION CONTROL FOR A WELLBORE LOGGING TOOL
    9.
    发明申请
    ONLINE ACTIVE VIBRATION CONTROL FOR A WELLBORE LOGGING TOOL 审中-公开

    公开(公告)号：US20170212264A1

    公开(公告)日：2017-07-27

    申请号：US15329049

    申请日：2014-08-07

    Applicant: Halliburton Energy Services, Inc.

    Inventor： Yiming Zhao ,  Xingyong Song ,  Jason D. Dykstra

    IPC: G01V1/52 ,  E21B49/00 ,  E21B47/14

    Abstract: In accordance with some embodiments of the present disclosure, a method for vibration control for a wellbore logging tool is disclosed. The method may include measuring an initial output signal of the wellbore logging tool. Additionally, the method may include generating a first braking signal based on the initial output signal of the wellbore logging tool. The method may further include transmitting the first braking signal to the wellbore logging tool. The first braking signal may be designed to dampen the vibration of the wellbore logging tool.

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