System and method for automatic weight-on-bit sensor calibration
AssigneeHalliburton Energy Services, Inc.
InventorRichard T. Hay
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Abstract
A system and method for automatic weight-on-bit sensor calibration is described. Embodiments of the invention automatically compensate the measurements of a weight-on-bit sensor based on one or more of mass, hole inclination, buoyancy, drag, and mud flow, resulting in a more accurate axial force measurement below the weight-on-bit sensor at various hole inclinations. This measurement is observed by removing some of the effects masking the actual force being applied to the axial face of the drill bit.
Claims20
A method for optimizing weight measurements in drilling operations, the method comprising:
- calculating a net axial force applied to a weight sensor using a hole inclination and a weight on the weight sensor;
- determining a correction value with the net axial force;
- and
- calibrating the weight sensor with the correction value.
A system for optimizing weight measurements in drilling operations, the system comprising:
- a weight sensor that measures a weight on the weight sensor;
- a processor coupled to the weight sensor that:
- calculates a net axial force applied to the weight sensor using a hole inclination and the weight on the weight sensor,
- determines a correction value using the net axial force, and
- calibrates the weight sensor using the correction value;
- and
- a memory coupled to the processor.
Dependencies are inferred from the claim text.