ROLLING CUTTER PLACEMENT ON PDC BITS

• US 20120132471A1
• Filed: 11/23/2011
• Published: 05/31/2012
• Est. Priority Date: 05/19/2010
• Status: Active Grant

• Current Assignee: Smith International Incorporated (Schlumberger NV)
• Original Assignee: Smith International Incorporated (Schlumberger NV)
• Inventors: Zhang, Youhe, Azar, Michael
• Granted Patent: US 9,016,409 B2
• Time in Patent Office: Days
• US Class Current: 175/338
• CPC Class Codes: E21B 10/52 with chisel- or button-type inserts
• CPC Class Codes: E21B 10/55 with preformed cutting elements
• CPC Class Codes: E21B 10/573 characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
• CPC Class Codes: E21B 10/627 with plural detachable cutting elements

Abstract

A cutting tool cutting tool may include a tool body having a plurality of blades extending radially therefrom; and a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a nose and/or shoulder region of the cutting tool at a side rake angle ranging from about 10 to about 30 degrees or −10 to about −30 degrees

Claims

1. A cutting tool comprising:

a tool body having a plurality of blades extending radially therefrom; and

a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a forward spiral configuration, and wherein each of the plurality of rotatable cutting elements has a negative side rake angle.

2. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements are mounted on the at least one blade at side rake angles ranging from 0 to about −

45 degrees.

3. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements are mounted on the at least one blade at side rake angles ranging from −

5 to about −

35 degrees.

4. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements are mounted on the at least one blade at side rake angles ranging from −

15 to about −

30 degrees.

5. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements mounted in a nose region of the cutting tool has a side rake angle ranging from about −

10 to about −

30 degrees.

6. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements mounted in a nose region of the cutting tool has a side rake angle ranging from about −

20 to about −

30 degrees.

7. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements mounted in a shoulder region of the cutting tool has a side rake angle ranging from about −

10 to about −

30 degrees.

8. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements mounted in a shoulder region of the cutting tool has a side rake angle ranging from about −

20 to about −

30 degrees.

9. The cutting tool of claim 1, wherein the plurality of rotatable cutting elements mounted in a gage region of the cutting tool have a side rake angle of less than −

25 degrees.

10. The cutting tool of claim 1, wherein a plurality of cutting elements mounted in a cone region of the cutting tool have a side rake angle of less than −

20 degrees.

11. The cutting tool of claim 10, wherein the plurality of cutting elements mounted in the cone region are rotatable.

12. The cutting tool of claim 11, wherein each of the cutting elements in a nose and shoulder region of the cutting tool are rotatable.

13. A cutting tool comprising:

a tool body having a plurality of blades extending radially therefrom; and

a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a reverse spiral configuration, and wherein each of the plurality of rotatable cutting elements has a positive side rake angle.

14. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements are mounted on the at least one blade at side rake angles ranging from 0 to about 45 degrees.

15. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements are mounted on the at least one blade at side rake angles ranging from 5 to about 35 degrees.

16. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements are mounted on the at least one blade at side rake angles ranging from 15 to about 30 degrees.

17. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements mounted in a nose region of the cutting tool has a side rake angle ranging from about 10 to about 30 degrees.

18. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements mounted in a nose region of the cutting tool has a side rake angle ranging from about 20 to about 30 degrees.

19. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements mounted in a shoulder region of the cutting tool has a side rake angle ranging from about 10 to about 30 degrees.

20. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements mounted in a shoulder region of the cutting tool has a side rake angle ranging from about 20 to about 30 degrees.

21. The cutting tool of claim 13, wherein the plurality of rotatable cutting elements mounted in a gage region of the cutting tool have a side rake angle of less than 25 degrees.

22. The cutting tool of claim 13, wherein a plurality of cutting elements mounted in a cone region of the cutting tool have a side rake angle of less than 20 degrees.

24. The cutting tool of claim 13, wherein each of the cutting elements in a nose and shoulder region of the cutting tool are rotatable.

23. The cutting tool of claim 23, wherein the plurality of cutting elements mounted in the cone region are rotatable.

25. A cutting tool comprising:

a tool body having a plurality of blades extending radially therefrom; and

a plurality of rotatable cutting elements mounted on at least one of the plurality of blades, wherein the plurality of rotatable cutting elements are mounted on the at least one blade in a nose and/or shoulder region of the cutting tool at a side rake angle ranging from about 10 to about 30 degrees or −

10 to about −

30 degrees.

26. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements are mounted in a reverse spiral configuration.

27. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements are mounted in a forward spiral configuration.

28. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements mounted in a nose region of the cutting tool has a side rake angle ranging from about 10 to about 30 degrees or from about −

10 to about −

30 degrees.

29. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements mounted in a nose region of the cutting tool has a side rake angle ranging from about 20 to about 30 degrees or from about −

20 to about −

30 degrees.

30. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements mounted in a shoulder region of the cutting tool has a side rake angle ranging from about 10 to about 30 degrees or from about −

10 to about −

30 degrees.

31. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements mounted in a shoulder region of the cutting tool has a side rake angle ranging from about 20 to about 30 degrees or from about −

20 to about −

30 degrees.

32. The cutting tool of claim 25, wherein the plurality of rotatable cutting elements mounted in a gage region of the cutting tool have a side rake angle of less than ±

25 degrees.

33. The cutting tool of claim 25, wherein a plurality of cutting elements mounted in a cone region of the cutting tool have a side rake angle of less than ±

20 degrees.

34. The cutting tool of claim 33, wherein the plurality of cutting elements mounted in the cone region are rotatable.

35. The cutting tool of claim 25, wherein each of the cutting elements in a nose and shoulder region of the cutting tool are rotatable.