Adaptive drilling control system
A system for optimizing a rate-of-penetration of a drill string includes a plurality of sensors in operable communication with the drill string and a controller in operable communication with the plurality of sensors. The controller is connectable to a downhole active vibration control device and capable of outputting a signal to the downhole active vibration control device for optimizing the rate-of-penetration of the drill string.
1. A system for optimizing a rate-of-penetration of a drill string, the system comprising:
a plurality of sensors in operable communication with the drill string; and
a controller in operable communication with the plurality of sensors, the controller connectable to a downhole active vibration control device and capable of outputting a signal to the downhole active vibration control device for optimizing the rate-of-penetration of the drill string, wherein
the signal is configured to limit vibration of the drill string and the vibration comprises torsional vibration.
2. The system as in claim 1 , wherein the signal is further configured to provide an amount of vibration to be dampened.
3. The system as in claim 1 , wherein the downhole active vibration control device comprises a vibration control element configured to extend from the active vibration control device in order to absorb or control vibration.
4. The system as in claim 3 , wherein the vibration control element is configured to extend from the downhole active vibration control device upon receipt of the signal.
5. The system as in claim 1 , wherein the active vibration control device is configured to divert a fluid flowing in the drill string.
6. The system as in claim 5 , wherein the controller is configured to control an amount of diverted fluid.
7. The system as in claim 1 , wherein the sensors are sensitive to at least one of force, moment, acceleration, stress, strain, velocity, distance, angle, pressure, temperature, or vibration.
8. The system as in claim 1 , wherein a set of sensors within the plurality of sensors is disposed along the drill string.
9. The system as in claim 1 , wherein at least one sensor in the plurality is sensitive to a rate of travel of the drill string.
10. The system as in claim 1 , wherein the controller comprises a plurality of inputs and a plurality of outputs.
11. The system as in claim 10 , wherein the controller comprises a neural network.
12. The system as in claim 11 , wherein the controller comprises model reference adaptive control.
13. The system as in claim 11 , wherein the controller comprises model free adaptive control.
14. The system as in claim 11 , further comprising a delay predictor configured to produce a dynamic signal that is an artificial feedback signal in a feedback loop.
15. The system as in claim 1 , further comprising a broadband communication system configured to couple the plurality of sensors to the controller and the controller to the downhole active vibration control device, the controller being disposed at a surface of the earth.
16. The system as in claim 1 , wherein the controller is disposed downhole at the drill string.
17. A method for optimizing a rate-of-penetration of a drill string in a borehole, the method comprising:
receiving a measurement from at least one sensor in a plurality of sensors in operative communication with the drill string; and
transmitting a signal from a controller to a downhole active vibration control device for optimizing the rate-of-penetration of the drill string, the signal being configured to limit vibration of the drill string and the vibration comprising torsional vibration.
18. The method as in claim 17 , wherein the signal is further configured to limit vibration of the drill string.
19. The method as in claim 17 , further comprising extending a vibration control element from the downhole active vibration control device upon receipt of the signal in order to absorb or control vibration.
20. The method as in claim 17 , further comprising identifying an adverse drilling event.
21. The method as in claim 20 , further comprising stopping drilling in response to identifying the adverse drilling event.
22. The method as in claim 21 , further comprising restarting drilling after the abnormal event is terminated.
23. The method as in claim 17 , wherein the controller comprises a neural network.
24. The method as in claim 23 , wherein the controller further comprises model reference adaptive control.
25. The method as in claim 23 , wherein the controller further comprises model free adaptive control.
26. The method as in claim 17 , further comprising producing a dynamic signal, at a delay predictor, that is an artificial feedback signal in a feedback loop.
27. A system for optimizing a rate-of-penetration of a drill string, the system comprising:
a plurality of sensors in operable communication with the drill string; and
a controller in operable communication with the plurality of sensors, the controller connectable to a downhole active vibration control device and capable of outputting a signal to the downhole active vibration control device for optimizing the rate-of-penetration of the drill string, wherein
the downhole active vibration control device comprises a vibration control element configured to extend from the active vibration control device to a borehole wall in order to absorb or control vibration.