Enhanced Oil Production Using Control Of Well Casing Gas Pressure

摘要

There is provided a system for producing oil from a well bore extending through a fossil fuel reservoir. The system includes a plurality of perforations defined in the casing proximate the fossil fuel reservoir. A gas flow tube is in communication with the annulus volume of the casing proximate the wellhead. A gas valve is coupled to the gas flow tube, with the gas valve configured to selectively open and close the gas flow tube. A controller, is coupled to the gas valve, with the controller configured to control the opening and closing of the gas valve. The opening and closing of the gas valve maximizes the volumetric rate of oil flow into the annulus volume through the perforations from the reservoir by displacing liquid in the annulus volume with a gas volume between the gas valve and the perforations.

主权项

1. A system for producing oil from a well bore extending through a fossil fuel reservoir, the well bore including a casing defining an annulus volume, a production tube disposed in the casing with the production tube coupled at one end to a wellhead and another end coupled to a pump configured to move liquid from the casing to the wellhead, the system comprising:
a plurality of perforations defined in the casing proximate the fossil fuel reservoir; a gas flow tube in communication with the annulus volume of the casing proximate the wellhead; a gas valve coupled to the gas flow tube, the gas valve configured to selectively open and close the gas flow tube; and a controller coupled to the gas valve, the controller configured to control the opening and closing of the gas valve to maximize the volumetric rate of oil flow into the annulus volume through the perforations from the reservoir by displacing liquid in the annulus volume with a gas volume between the gas valve and the perforations.