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US 2026/0063024 A1Published application
Systems and methods for improved weight-on-bit accuracy during drilling
AssigneeHelmerich & Payne Technologies, LLC
InventorsFergus Hopwood, Richard Kulavik
Life of this patent
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Abstract
Drilling systems and methods determine a compensated SWOB that accounts for forces applied by a rotating control device. A method of drilling a borehole includes tracking movement of a drill string relative to a rotating control device (RCD) and determining a compensated SWOB that accounts for passage of a tool joint through the RCD. The compensated SWOB is based on a difference between a weight of the drill string and the hook load minus an axial resistance force during passage of a tool joint through the RCD.
Claims30
A drilling system comprising:
- one or more sensors configured to generate sensor output indicative of a hook load applied to a drill string by a hoisting system;
- and
- a computer system coupled to the one or more sensors and configured to:
- monitor the hook load;
- track movement of the drill string relative to a rotating control device (RCD), wherein the drill string comprises drill pipes and tool joints, wherein each of the tool joints connects two of the drill pipes;
- determine a compensated surface weight-on-bit (SWOB) that accounts for passage of the tool joints through the RCD, wherein the compensated SWOB is based on a difference between a weight of the drill string and the hook load minus an axial resistance force on the drill string when a tool joint passes through the RCD;
- and
- drilling a wellbore, using the compensated SWOB, as the tool joint passes through the RCD.
5 more elements
A method of drilling a borehole, the method comprising:
- generating, by one or more sensors, sensor output indicative of a hook load applied to a drill string located in a borehole being drilled;
- processing, by a computer system, the sensor output to monitor the hook load;
- tracking, by the computer system, movement of the drill string relative to a rotating control device (RCD), wherein the drill string comprises a plurality of drill pipes and tool joints, wherein each of the tool joints connects two of the drill pipes;
- determining, by the computer system, a compensated SWOB that accounts for passage of a tool joint through the RCD, wherein the compensated SWOB is based on a difference between a weight of the drill string and the hook load minus a force defined by an axial resistance force during passage of the tool joint through the RCD;
- controlling, by the computer system, operation of a top drive and a hoisting system to drill the borehole, wherein operation of the hoisting system is controlled using the compensated SWOB;
- and
- drilling the borehole, using the compensated SWOB, as the tool joint passes through the RCD.
4 more elements
Dependencies are inferred from the claim text.