Downhole vortex generator

Patent · Tue Apr 23 00:00:00 EST 1985

OSTI ID:5358174

Hoyatdavoudi, A; Adams, L M

A drilling sub is provided in a drill string above a drill bit. The drilling sub includes a nozzle oriented to eject drilling fluid from said drill string into an annulus between the drill string and a well bore hole at an elevation above the drill bit with a horizontal velocity component tangential to said annulus to thereby impart a swirling motion to drilling fluid in the annulus. This creates a vortex extending down to the drill bit to enhance the cleaning of cuttings from the bore hole and to reduce a pressure differential thereby increasing a penetration rate of the drill bit.

• Assignee: Gill Industries Inc.
• Patent Number(s): US 4512420
• OSTI ID: 5358174
• Resource Relation: Patent File Date: Filed date 24 Jan 1984; Other Information: PAT-APPL-573500
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DRILL BITS
DESIGN
DRILL PIPES
OIL WELLS
CUTTINGS REMOVAL
BLOWOUT PREVENTERS
DRILLING FLUIDS
FLOW REGULATORS
NOZZLES
PRESSURE CONTROL
VORTEX FLOW
WELL DRILLING
CONTROL
CONTROL EQUIPMENT
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
FLUID FLOW
FLUIDS
PIPES
REMOVAL
WELLS
020300* - Petroleum- Drilling & Production