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US 2017/0321883 A1Published application
Systems and Methods for Generating Superheated Steam with Variable Flue Gas for Enhanced Oil Recovery
AssigneeEnergy Analyst LLC
InventorsA. Burl Donaldson, Brian Hughes
Life of this patent
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Abstract
Systems and methods are disclosed for producing a superheated steam having a specified ratio of water vapor to combustion gases for injection into a well to enhance heavy oil production. Embodiments comprise indirect-contact steam generators and direct-contact steam generators.
Claims20
A system for generating superheated steam for injection into a well comprising:
- a direct-contact superheater performing combustion and operating on feedwater in either a liquid state or a gas state or some combination of both states and generating a superheated steam having a specified ratio of non-condensable combustion gases to steam for injection into the well.
A method for generating superheated steam for injection into a well comprising:
- receiving feedwater either in a liquid state or a gas state or some combination of both states;
- generating superheated steam having a specified ratio of non-condensable combustion gases to steam using a direct-contact superheater performing combustion and operating on the feedwater;
- injecting the superheated steam into the well.
A method for generating superheated steam for injection into a well comprising:
- receiving feedwater;
- generating feedwater vapor from the feedwater using an indirect-contact steam generator, wherein the indirect-contact steam generator comprises fuel and oxidizer inputs for combustion;
- generating superheated steam using the feedwater vapor using a direct-contact superheater, wherein the direct-contact superheater comprises fuel and oxidizer inputs for combustion;
- controlling the fuel and oxidizer inputs on the indirect-contact steam generator and the direct-contact superheater to specify a ratio of non-condensable combustion gases to steam.
1 more element
Dependencies are inferred from the claim text.