Drill bit and method of renewing drill bit cutting face

Patent · Tue Apr 07 04:00:00 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
• Country of Publication: United States
• Language: English

Related Subjects

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