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US 2013/0153228 A1Published application
System and method for producing oil
AssigneeShell Oil Company
InventorsCarolus Petrus Adrianus BLOM, Paulus Maria BOERRIGTER, Ralf HEDDEN
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Abstract
The present invention provides a system and method for producing oil in which an ether-containing formulation is injected into a formation containing oil and an oil-immiscible formulation is injected into the formation, and oil is produced from the formation. The oil-immiscible formulation has a salt content of at most 5 wt. % and is comprised of water having a salt content of at most 5 wt. %.
Claims28
A system for producing oil from an underground formation comprising:
- a first well above the formation;
- a mechanism to inject an ether-containing formulation comprising into the formation, where the ether-containing formulation comprises an ether containing from 2 to 6 carbon atoms;
- a mechanism to inject an oil-immiscible formulation into the formation where the oil-immiscible formulation has a salt content of at most 5 wt. % and is comprised of water having at most 5 wt. % salt content;
- and
- a mechanism to produce oil from the formation,
- wherein at least one of the mechanism to inject the ether-containing formulation into the formation, the mechanism to inject an oil-immiscible formulation into the formation, or the mechanism to produce oil from the formation is located at the first well.
3 more elements
A method for producing oil, comprising:
- injecting an ether-containing formulation into a formation containing oil, where the ether-containing formulation comprises an ether containing from 2 to 6 carbons;
- injecting an oil-immiscible formulation into the formation, where the oil-immiscible formulation comprises water having a salt content of less than 5 wt. %;
- and
- producing oil from the formation.
1 more element
Dependencies are inferred from the claim text.