Drill bit and method of renewing drill bit cutting face

Patent · Tue Apr 07 00:00:00 EDT 1987

OSTI ID:6567666

Davis, K

This patent describes a drill bit having a lower formation engaging face which includes sockets formed therein, a stud assembly mounted in each socket. The method is described of removing the stud assemblies from the bit face comprises: placing a seal means about each stud assembly so that a stud assembly can sealingly reciprocate within a socket with a piston-like action; forming a reduced diameter passageway which extends rearwardly from communication with each socket to the exterior of the bit; flowing fluid into the passageway, thereby exerting fluid pressure against the rear end of the stud assembly; applying sufficient pressure to the fluid within the passageway to produce a pressure differential across the stud assembly to force the stud assembly to move outwardly in a direction away from the socket, thereby releasing the stud assembly from the socket.

• Assignee: W. Wesley Perry, Midland, TX
• Patent Number(s): US 4654947
• OSTI ID: 6567666
• Resource Relation: Patent File Date: Filed date 2 Dec 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
42 ENGINEERING
DRILL BITS
DESIGN
MECHANICAL EFFICIENCY
PRESSURE EFFECTS
WELL DRILLING
FLUID FLOW
FLUID MECHANICS
NATURAL GAS WELLS
OIL WELLS
PRESSURE CONTROL
SEALS
CONTROL
DRILLING
DRILLING EQUIPMENT
EFFICIENCY
EQUIPMENT
MECHANICS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)