Method for renewing the cutting face of a diamond drill bit
This patent describes a diamond drill bit having a formation engaging face and diamond cutter stud assemblies, each stud assembly is mounted in a counterbore at the face for penetrating the earth. The method is described of increasing the cutting efficiency of the bit comprises: (1) forming a passageway which extends from the bottom of the counterbore and to an external location on the bit, the external location being spaced from an outer end of the counterbore; (2) forcing a stud assembly to move out of a counterbore by applying fluid pressure to the passageway connected to the last counterbore; (3) rotating the last stud assembly about the longitudinal axis thereof to present an unused cutting area of the diamond cutter stud assembly in properly oriented position for engaging a formation; (4) forcing the stud assembly into operative seated position within the counterbore by connecting a hydraulic piston and cylinder assembly to the drill bit body and stud assembly and forcing the stud assembly to move into the bit body as the piston moves respective to the cylinder.
- Assignee:
- W. Wesley Perry, Midland, TX
- Patent Number(s):
- US 4654948
- OSTI ID:
- 6570631
- Resource Relation:
- Patent File Date: Filed date 2 Dec 1985
- Country of Publication:
- United States
- Language:
- English
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