Steam driven direct contact steam generation
First Claim
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1. A method for oil extraction, said method comprising the steps of:
- generating a liquid stream having water, organics and solids from an oil production facility, wherein organics are comprised of hydrocarbons;
generating steam through indirect heat exchange so as to form a generated steam;
mixing said generated steam with said liquid stream so as to transfer said water from a liquid phase to a gas phase;
separating said solids to produce a process steam, said process steam being a solids lean gas phase comprised of steam; and
extracting oil with said process steam.
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Abstract
The system and method for steam production for oil production. The method includes generating steam from an indirect heat exchange system, mixing the steam with water containing solids and organics, separating solids, and injecting the steam through an injection well or using it above ground for oil recovery, such as for generating hot process water. The system includes a steam drive direct contact steam generator. The water feed can be hot produced water separated from a produced oil emulsion and/or low quality water salvaged from industrial plants, such as refineries and tailings from an oilsands mine.
16 Citations
18 Claims
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1. A method for oil extraction, said method comprising the steps of:
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generating a liquid stream having water, organics and solids from an oil production facility, wherein organics are comprised of hydrocarbons; generating steam through indirect heat exchange so as to form a generated steam; mixing said generated steam with said liquid stream so as to transfer said water from a liquid phase to a gas phase; separating said solids to produce a process steam, said process steam being a solids lean gas phase comprised of steam; and extracting oil with said process steam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for oil production, said method comprising the steps of:
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generating a liquid stream having water, solids, and hydrocarbons; generating steam through indirect heat exchange so as to form a generated steam; gasifying said liquid stream with said generated steam by direct contact heat exchange so as to transfer said water from a liquid phase to a gas phase; separating said gas phase to produce a process steam, said process steam being a solids lean gas phase steam; condensing said process steam to generate process heat and process water; and extracting oil with said process water. - View Dependent Claims (12, 13, 14)
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15. A system for producing steam for extracting heavy bitumen, the system comprising:
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an indirect contact heat exchanger means, wherein system water is heated by said indirect contact heat exchanger means to generate a superheated steam; a steam drive direct contact steam generator, mixing said superheated steam with a liquid discharge stream having water and solids, wherein said steam drive direct contact steam generator is in fluid connection to said indirect contact heat exchanger means; and an enhanced oil recovery facility in fluid connection to said steam drive direct contact steam generator. - View Dependent Claims (16, 17, 18)
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Specification