Well drilling methods with automated response to event detection

Patent metadata

Field	Value
Publication number	US-9528334-B2
Application number	US-201213491513-A
Country	US
Kind code	B2
Filing date	Jun 7, 2012
Priority date	Jul 30, 2009
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A well drilling method can include detecting a drilling event by comparing a parameter signature generated during drilling to an event signature indicative of the drilling event, and automatically controlling a drilling operation in response to at least a partial match resulting from comparing the parameter signature to the event signature. A well drilling system can include a control system which compares a parameter signature for a drilling operation to an event signature indicative of a drilling event, and a controller which controls the drilling operation automatically in response to the drilling event being indicated by at least a partial match between the parameter signature and the event signature.

First claim

What is claimed is:

1. A well drilling method for drilling a well, comprising:
monitoring a drilling parameter during drilling;
generating a parameter signature based on how the drilling parameter changes over time;
comparing the parameter signature to an event signature indicative of a drilling event;
detecting the drilling event will occur if the parameter signature is a partial match with the event signature; and
automatically controlling a drilling operation in response to the detecting.

2. The method of claim 1 , wherein automatically controlling further comprises automatically adjusting a choke in response to the comparing.

3. The method of claim 1 , wherein the drilling event comprises an influx, and wherein automatically controlling further comprises automatically closing a choke a predetermined amount in response to detecting that the influx will occur.

4. The method of claim 1 , wherein the drilling event comprises a fluid loss, and wherein automatically controlling further comprises automatically opening a choke a predetermined amount in response to detecting that the fluid loss will occur.

5. The method of claim 1 , wherein automatically controlling further comprises automatically restoring circulation flow through a drill string.

6. The method of claim 1 , wherein automatically controlling further comprises automatically switching between a) maintaining a desired wellbore pressure, and b) maintaining a desired standpipe pressure.

7. The method of claim 6 , wherein the drilling event comprises an influx.

8. The method of claim 1 , wherein automatically controlling further comprises automatically implementing a well control procedure.

9. The method of claim 8 , wherein the well control procedure comprises diverting fluid flow to a rig choke manifold.

10. The method of claim 8 , wherein automatically implementing the well control procedure further comprises automatically circulating an undesired influx out of the well.

11. The method of claim 8 , wherein automatically implementing the well control procedure further comprises automatically operating a choke manifold, thereby circulating an undesired influx out of the well.

12. The method of claim 1 , wherein the drilling event comprises plugging of a choke, and wherein automatically controlling further comprises automatically manipulating the choke in response to detecting that the plugging of the choke will occur.

13. The method of claim 12 , wherein manipulating the choke further comprises alternately opening and closing the choke.

14. The method of claim 1 , wherein automatically controlling further comprises automatically switching flow from a first choke to a second choke.

15. The method of claim 14 , wherein the drilling event comprises flow through the first choke being outside of an optimum operating range of the first choke.

16. The method of claim 14 , wherein the drilling event comprises the first choke being compromised.

17. The method of claim 14 , wherein the drilling event comprises the first choke being locked.

18. The method of claim 14 , wherein the drilling event comprises the first choke being plugged.

19. The method of claim 14 , wherein the drilling event comprises the first choke being washed out.

20. The method of claim 14 , wherein switching flow further comprises automatically maintaining a desired pressure during the switching.

21. The method of claim 1 , wherein the drilling event comprises exceeding an operating range of one or more operative chokes, and wherein automatically controlling further comprises automatically increasing a number of the operative chokes in response to detecting that the exceeding of the operating range of the one or more operative chokes will occur.

22. The method of claim 1 , wherein the drilling event comprises failure of a rotating control device seal.

23. The method of claim 22 , wherein automatically controlling further comprises automatically diverting flow to a rig choke manifold in response to detecting that the failure of the rotating control device seal will occur.

24. The method of claim 22 , wherein automatically controlling further comprises opening a choke a predetermined amount, thereby increasingly relieving pressure across the rotating control device in response to detecting that the failure of the rotating control device seal will occur.

25. The method of claim 1 , wherein automatically controlling further comprises communicating rig heave information to a model.

26. The method of claim 1 , wherein the drilling event comprises rig heave.

27. The method of claim 26 , wherein automatically controlling further comprises automatically adjusting annulus volume in response to detecting that the rig heave will occur.

28. The method of claim 26 , wherein automatically controlling further comprises automatically updating a pressure set point in response to detecting that the rig heave will occur.

29. The method of claim 1 , wherein automatically controlling is performed in response to human authorization of such automatic control of the drilling operation.

30. A well drilling system for drilling a well, comprising:
a control system configured to monitor a drilling parameter during drilling and generate a parameter signature based on how the drilling parameter changes over time;
the control system further configured to compare the parameter signature to an event signature indicative of a drilling event;
the control system further configured to detect that the drilling event will occur if the parameter signature is a partial match with the event signature; and
a controller configured to automatically control a drilling operation in response to detecting that the drilling event will occur.

31. The system of claim 30 , wherein the controller automatically adjusts a choke in response to detecting that the drilling event will occur.

32. The system of claim 30 , wherein the drilling event comprises an influx, and wherein the controller automatically closes a choke a predetermined amount in response to detecting that the influx will occur.

33. The system of claim 30 , wherein the drilling event comprises a fluid loss, and wherein the controller automatically opens a choke a predetermined amount in response to detecting that the fluid loss will occur.

34. The system of claim 30 , wherein the control system automatically switches between a) maintenance of a desired wellbore pressure, and b) maintenance of a desired standpipe pressure.

35. The system of claim 34 , wherein the drilling event comprises an influx.

36. The system of claim 30 , wherein the control system automatically implements a well control procedure.

37. The system of claim 36 , wherein the well control procedure comprises diversion of fluid flow to a rig choke manifold.

38. The system of claim 36 , wherein the well control procedure comprises automatic circulation of an undesired influx out of the well.

39. The system of claim 36 , wherein the well control procedure comprises automatic operation of a choke manifold, whereby an undesired influx is circulated out of the well.

40. The system of claim 30 , wherein the drilling event compri

Assignees

• Davis Nancy
• Butler Cody
• Pool Charles M
• Hourd Ryan
• Reynolds Aaron
• Godfrey Craig W
• Urias Frank
• Saeed Saad
• Bakri Emad
• Lovorn James R
• Halliburton Energy Services Inc

Inventors

• Davis Nancy
• Butler Cody
• Pool Charles M
• Hourd Ryan
• Reynolds Aaron
• Godfrey Craig W
• Urias Frank
• Saeed Saad
• Bakri Emad
• Lovorn James R

Classifications

• E21B21/10 Primary

  Valve arrangements in drilling-fluid circulation systems · CPC title

• E21B21/085

  Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure · CPC title

• E21B44/00

  Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions · CPC title

• E21B47/00

  Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B21/08) · CPC title

• E21B21/08 Primary

  Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure (valve arrangements therefor E21B21/10) · CPC title