Controller for plunger lift system for oil and gas wells

Patent · Tue May 12 04:00:00 EDT 1987

OSTI ID:6534117

Gordon, B L

This patent describes a controller for a plunger lift system in which a pneumatically operated motor valve in the flow line of a producing well is opened intermittently to allow gas in the annulus between the well tubing and well casing to move a plunger through the tubing to the surface from a downhole position to force fluid in the tubing to the flow line. The controller comprises a microprocessing unit including a microprocessor, an A/D converter, and a programmable read only memory, a keyboard for programming the memory for a preselected period of off-time that the flow line valve is to be closed, followed by a preselected period of on-time that the flow line valve is to be open.

• Assignee: Artificial Lift Systems, Inc., Houston, TX
• Patent Number(s): US 4664602
• OSTI ID: 6534117
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ARTIFICIAL LIFTS
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL
CONTROL EQUIPMENT
CONTROL SYSTEMS
DRILL PIPES
DRILLING EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
GAS FLOW
MEMORY DEVICES
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
MOTORS
NATURAL GAS WELLS
OIL WELLS
PIPES
PNEUMATIC CONTROLLERS
PRESSURE CONTROL
PROGRAMMING
SIGNALS
TIME DEPENDENCE
VALVES
WELL CASINGS
WELLS