Method for renewing the cutting face of a diamond drill bit

Davis, K

Title: Method for renewing the cutting face of a diamond drill bit

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Abstract

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.

Inventors:: Davis, K

Publication Date:: Tue Apr 07 00:00:00 EDT 1987

OSTI Identifier:: 6570631

Patent Number(s):: US 4654948

Assignee:: W. Wesley Perry, Midland, TX

Resource Type:: Patent

Resource Relation:: Patent File Date: Filed date 2 Dec 1985

Country of Publication:: United States

Language:: English

Subject:: 02 PETROLEUM; 03 NATURAL GAS; 42 ENGINEERING; DRILL BITS; DESIGN; MECHANICAL EFFICIENCY; PRESSURE EFFECTS; WELL DRILLING; CYLINDERS; DIAMONDS; FLUID MECHANICS; HYDRAULIC EQUIPMENT; NATURAL GAS WELLS; OIL WELLS; PISTONS; ROTATION; CARBON; DRILLING; DRILLING EQUIPMENT; EFFICIENCY; ELEMENTAL MINERALS; ELEMENTS; EQUIPMENT; MECHANICS; MINERALS; MOTION; NONMETALS; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing; 420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)

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                    Davis, K. Method for renewing the cutting face of a diamond drill bit.  United States: N. p., 1987. 
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                    Davis, K. Method for renewing the cutting face of a diamond drill bit.  United States.

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                    Davis, K. 1987.  
        "Method for renewing the cutting face of a diamond drill bit".  United States.

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@article{osti_6570631,

  title        = {Method for renewing the cutting face of a diamond drill bit},

  author       = {Davis, K},

  abstractNote = {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.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6570631},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Apr 07 00:00:00 EDT 1987},

  month        = {Tue Apr 07 00:00:00 EDT 1987}

}

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