Variable length three-cone rock bit nozzles
A three-cone sealed bearing rock bit is described of the type that utilizes drilling fluid during operation of the rock bit in an earth formation comprising: a rock bit body having a first pin end and a second cutting end. The cutting end consists of rotary cones mounted to journals that are cantilevered radially inwardly from legs extending from the rock bit body; a fluid chamber formed by the body. The fluid chamber is opened at the first pin end of the body; and at least three variable length nozzle bodies positioned about 120/sup 0/ one from the other, extend from a dome portion formed at a base of the bit body toward a bottom of a borehole in the earth formation. Each of the nozzle bodies communicates with the fluid chamber in the body and extends a different length from the dome portion.
- Assignee:
- NOV; NOV-87-063210; EDB-87-107111
- Patent Number(s):
- US 4665999
- OSTI ID:
- 6437889
- Resource Relation:
- Patent File Date: Filed date 16 May 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
42 ENGINEERING
DRILL BITS
NOZZLES
WELL DRILLING
BOREHOLES
DETRITUS
DRILLING FLUIDS
NATURAL GAS WELLS
OIL WELLS
POSITIONING
ROCKS
SEALS
TURBULENT FLOW
CAVITIES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
FLUID FLOW
FLUIDS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing
420206 - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)