Downhole motor fluid flow restrictor

Patent · Tue Oct 15 00:00:00 EDT 1985

OSTI ID:5920966

Dennis, T G; Bramlett, K W; Jackson, Jr, G C

A downhole drilling motor located near the end of a rotary drill string is powered by the drilling fluid for driving a rotary drill bit for the drilling of an oil or gas well or the like. Substantially all of the drilling fluid that exits the power producing section is channeled toward the nozzles of the drill bit with a small portion being diverted through the bearings of the motor. A series of elastomer flow restrictor elements, each responding to increased fluid pressure by reducing the flow area therethrough, controls the fluid flow through the bearings to within a narrow range of flow rates.

• Assignee: Dresser Industries, Inc.
• Patent Number(s): US 4546836
• OSTI ID: 5920966
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BEARINGS
CONTROL EQUIPMENT
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
DRILLS
ELECTRIC MOTORS
EQUIPMENT
FLOW RATE
FLOW REGULATORS
FLUID MECHANICS
FLUIDS
HYDRAULICS
MECHANICS
MOTORS
NATURAL GAS WELLS
NOZZLES
OIL WELLS
ROTARY DRILLS
WELL DRILLING
WELLS