Automated sliding drilling
    82.
    发明授权

    公开(公告)号:US10883356B2

    公开(公告)日:2021-01-05

    申请号:US15304772

    申请日:2015-04-17

    Abstract: Automated control of a drillstring in a borehole, which is not in continuous rotation, the drillstring comprising an angled component (a bent sub or the like) and a downhole means of rotating the bit, such as a motor or turbine, which rotates the bit independently of drillstring rotation. Near the distal end of the drillstring are measurement devices, at least one and in some aspects two or more, which are used to measure the orientation of the drillstring/bent sub/bottomhole assembly/drill bit with respect to a geophysical field of the earth, such as magnetism (magnetic toolface) or gravity (gravitational toolface). These measurement devices may be connected to a communications module which transmits the downhole toolface information to the surface. The drillstring is controlled to provide that based upon the downhole measurements the drilling system drills the borehole in a desired trajectory.

    Directional Drilling Target Steering Apparatus and Method

    公开(公告)号:US20200378189A1

    公开(公告)日:2020-12-03

    申请号:US16994619

    申请日:2020-08-16

    Abstract: An apparatus and method are used in conjunction with a system for performing horizontal directional drilling, the system including a drill string extending from a drill rig to a boring tool such that the boring tool is steerable based on a roll orientation. The system also includes an arrangement for generating steering commands for guiding the boring tool to a target position. Responsive at least in part to the steering commands, a display is configured to selectively indicate each of a rotate command, a push command and a spin command. A steering indicator is described which indicates a current roll orientation of the boring tool. A 3-D grid can be animated and centered on either a steering or target indicator. Rounding of a steering command ratio can limit the display of target roll orientations to only those that a given boring tool transmitter is capable of sensing and indicating.

    DRILLING APPARATUS AND METHOD FOR THE DETERMINATION OF FORMATION LOCATION

    公开(公告)号:US20200277823A1

    公开(公告)日:2020-09-03

    申请号:US16765998

    申请日:2019-01-25

    Applicant: ANTECH LIMITED

    Abstract: An apparatus for drilling a well which includes a drill bit (2) arranged at the end of a length of drill tubing (4), a motor (3) to rotate the drill bit and steering means to steer the drill bit, and including torque measuring means (5) to measure the torque applied to the drill bit continuously and processing means to calculate values for the mechanical specific energy (MSB) and measured depth data over time whilst drilling. The processing means includes comparison means which is configured to compare the measured data with known data to determine the nature of the formation (6) being drilled compared to known types of formation, and which processing means is configured to indicate a change from a first formation type to a second formation type, thus indicating the presence of a formation boundary, when the drill bit is adjacent to or just past the formation boundary (7).

    Inferring Orientation Parameters of A Steering System for Use with A Drill String

    公开(公告)号:US20200270981A1

    公开(公告)日:2020-08-27

    申请号:US16466563

    申请日:2018-08-02

    Inventor: Paul F. Rodney

    Abstract: A method to steer a drill bit of a rotary steerable system within a wellbore can include introducing the rotary steerable system into the wellbore. The method can further include establishing a magnetic model associated with the drill bit. Magnetic field parameters are measured at various locations of the rotary steerable system. A magnetic gradient tensor of the magnetic field parameters can be determined. Orientation parameters are solved with respect to the magnetic model and based on the magnetic gradient tensor. The drill bit can be steered based on the calculated parameters.

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