Monitoring the condition of a drill string
AssigneeSaudi Arabian Oil Company
InventorRoberto Castillo Duran
Life of this patent
Estimating the term…
Abstract
A method of determining the condition of a drill string includes receiving, by a processing device and from one or more sensors coupled to a portion of a drill string at or near a surface of a wellbore, noise information. The noise information represents drilling vibrations of the drill string during drilling of the wellbore. The method also includes determining, by the processing device based on the noise information, multiple vibration modes of the drill string. The method also includes comparing, by the processing device, the vibration modes to at least one vibration mode threshold. The method also includes determining, by the processing device based on the comparison of the vibration modes to the at least one vibration mode threshold, a condition of the drill string.
Claims20
A method comprising:
- receiving, by a processing device and from one or more sensors coupled to a portion of a drill string at or near a surface of a wellbore, noise information representing drilling vibrations of the drill string during drilling of the wellbore;
- determining, by the processing device and based on the noise information, a plurality of vibration modes of the drill string;
- comparing, by the processing device, the plurality of vibration modes to at least one vibration mode threshold;
- and
- determining, by the processing device and based on the comparison of the plurality of vibration modes to the at least one vibration mode threshold, a condition of the drill string.
A method comprising:
- receiving, by a processor and from at least one sensor coupled to a portion of a drill string residing at or near a surface of a wellbore, vibration noise information representing vibrations of the drill string;
- determining, by the processor and based on the vibration noise information, a vibration mode of the drill string;
- determining, by the processor, based on the vibration noise information and based on parameters of the drill string, a vibration threshold;
- comparing, by the processor, the vibration mode to the vibration threshold;
- and
- determining, by the processor and based on the comparison of the vibration mode to the vibration threshold, a condition of the drill string.
A system comprising:
- one or more sensors attached to a portion of a drill string at or near a surface of a wellbore;
- a processor communicatively coupled to the one or more sensors;
- and
- a memory communicatively coupled to the processor, the memory storying instructions which, when executed, cause the processor to perform operations including:
- receive, from the one or more sensors, noise information representing drilling vibrations of the drill string during drilling;
- determine, based on the noise information, a plurality of vibration modes of the drill string;
- compare the plurality of vibration modes to at least one vibration mode threshold;
- and
- determine, based on the comparison of the plurality of vibration modes to the vibration mode threshold, a condition of the drill string.
Dependencies are inferred from the claim text.