Fluid handling – Diverse fluid containing pressure systems – Gas lift valves for wells
Patent
1990-11-30
1992-12-22
Rivell, John
Fluid handling
Diverse fluid containing pressure systems
Gas lift valves for wells
1374875, 417109, 417110, F04F 120
Patent
active
051727170
ABSTRACT:
An electrically actuated downhole system for controlling and monitoring the flow of gas from a gas lift petroleum well in which a borehole penetrates at least two spacially separated geological production zones, and at least two strings of parallel tubing extend along the interior of a well casing, each string being associated with a separate production zone. Connected to each string is a gas lift valve associated with the string's respective spacially separated production zone. A single source of pressurized gas is connected to the casing at the wellhead to provide a source of lift gas. A control unit located at the surface independently controls and monitors the size of the flow control aperture of each gas lift valve to control the production of fluids from each separate production zone. Control cables carry readings from downhole pressure and flow-rate sensors to the control unit, and in response, carry control signals back to each gas lift valve to control its aperture size.
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Boyle William G.
Goiffon John J.
Pool Charles M.
Otis Engineering Corporation
Rivell John
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