Crossflow rotary cone rock bit with extended nozzles
Patent
·
OSTI ID:6002128
A rotary cone rock bit is described for use in an earth formation, the rock bit being run with hydraulic fluid, the rock bit comprising: a rock bit body having a first open pin end adapted to be connected to a drillstring and a second cutting end, the second cutting end consisting of three rotary cones rotatively retained on journal bearings extending from three 120/sup 0/ rock bit leg segments connected to a dome portion formed by the bit body, the bit body further forming a chamber therein for receiving the hydraulic fluid, the chamber is in fluid communication with the first open pin end; and a pair of mini-extended nozzles, each of the nozzles forming a first entrance end and a second exit end, the nozzles are connected to a dome portion formed by the bit body, the first entrance end of each of the nozzles being in fluid communication with the chamber, each mini-extended nozzle is positioned in the dome portion of the rock bit between two of the three 120/sup 0/ leg segments to direct the hydraulic fluid across the cutting end of the rock bit, a nozzle passage profile formed by each of the mini-extended nozzles define a streamlined entry transition sat the first nozzle entrance end from the dome portion to the entrance end, and a streamlined nozzle throat portion nearest the first nozzle entrance end.
- Assignee:
- Smith International, Inc., Newport Beach, CA
- Patent Number(s):
- US 4687067
- OSTI ID:
- 6002128
- Country of Publication:
- United States
- Language:
- English
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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)
BEARINGS
CROSSFLOW SYSTEMS
DESIGN
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
FLUIDS
HYDRAULIC FLUIDS
JOURNAL BEARINGS
NATURAL GAS WELLS
NOZZLES
OIL WELLS
OPERATION
PIPES
ROCK DRILLING
WELL DRILLING
WELLS
WORKING FLUIDS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
BEARINGS
CROSSFLOW SYSTEMS
DESIGN
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
FLUIDS
HYDRAULIC FLUIDS
JOURNAL BEARINGS
NATURAL GAS WELLS
NOZZLES
OIL WELLS
OPERATION
PIPES
ROCK DRILLING
WELL DRILLING
WELLS
WORKING FLUIDS