Electric and fired steam generation systems
AssigneeConocoPhillips Company
InventorScott MACADAM
Life of this patent
Estimating the term…
Abstract
Methods and systems relate to steam assisted oil recovery utilizing a fired boiler and an electric boiler, which may be disposed closer to an injection well than the fired boiler. A gas turbine produces electricity supplied to the electric boiler and flue gas exhaust that may input into the fired boiler. The electric boiler may vaporize condensate that forms from the steam generated in the fired boiler prior to being introduced into the injection well.
Claims20
A method of steam assisted oil recovery with dual steam generation, comprising:
- producing electricity with an onsite gas turbine;
- generating steam with a fired boiler at a first location;
- conveying the steam to a second location resulting in a mixture formed of the steam and condensate caused by heat loss during the conveying;
- separating the steam from the condensate in the mixture;
- heating the condensate in an electric boiler powered by the electricity from the gas turbine to convert the condensate back to a vapor phase combined with the steam separated from the condensate to provide a combined steam flow;
- and
- introducing the combined steam flow into a formation for the steam assisted oil recovery.
A method of steam assisted oil recovery with dual steam generation, comprising:
- producing electricity with an onsite gas turbine;
- generating steam with both a fired boiler coupled to use a flue gas exhaust of the gas turbine as an oxidant feed for combustion in the fired boiler and an electric boiler powered by the electricity from the gas turbine;
- and
- introducing the steam from the fired boiler and the electric boiler into at least one injection well for the steam assisted oil recovery.
A system for steam assisted oil recovery with dual steam generation, comprising:
- an onsite gas turbine to produce electricity;
- a fired boiler to generate steam at a first location;
- a steam conduit coupled to the fired boiler for conveying the steam to a second location;
- a separator coupled to the steam conduit for dividing the steam from condensate formed by heat loss along the steam conduit;
- an electric boiler powered by the electricity from the gas turbine to heat and convert the condensate back to a vapor phase;
- and
- an injection well coupled to vapor outputs from the separator and the electric boiler for the steam assisted oil recovery.
Dependencies are inferred from the claim text.