Slip stream device

Patent · Tue Jan 10 04:00:00 EST 1989

OSTI ID:6059900

Ayres, R N

This patent describes a device for continuously adding chemicals to a production oil and gas well including a casing extending into the ground with a substantially coaxially disposed tubing therein wherein a down hole pump pumps crude oil upwardly through the tubing and gas flows upwardly through the casing. The device consists of: an above ground mixing chamber having an inlet and an outlet; first means communicating between the tubing and inlet for diverting a flow of production oil into the inlet; pressure responsive valve means at the inlet for closing the inlet when the pressure within the chamber exceed a predetermined value; second means downstream of the inlet for admitting a predetermined flow of liquid chemical into the chamber; and choke means disposed within the chamber downstream of the second means for permitting only a predetermined flow rate of the liquid contents thereof through the outlet conduit means communicating between the outlet and the casing for conveying the flow through the outlet in the casing; whereby the liquid contents flush downwardly through the casing through the well to be pumped upwardly through the tubing.

• Assignee: NOV; NOV-89-053113; EDB-89-075941
• Patent Number(s): US 4796697
• OSTI ID: 6059900
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
DUCTS
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
MATERIALS HANDLING EQUIPMENT
MIXERS
NATURAL GAS WELLS
OIL WELLS
PRODUCTION
PUMPING
PUMPS
VALVES
WELL CASINGS
WELL INJECTION EQUIPMENT
WELLS