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US 2014/0174735 A1Published application
Method, system, and composition for producing oil
AssigneeShell Oil Company
InventorsJeffrey George SOUTHWICK, Yi SVEC, Gordon Thomas SHAHIN
Life of this patent
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Abstract
A method, system, and composition for producing oil from a formation utilizing an oil recovery formulation comprising a surfactant, an ammonia liquid, a polymer, and water are provided.
Claims35
A process for recovering oil from an oil-bearing formation, comprising:
- mixing a surfactant, water, a polymer, and ammonia liquid comprising at most 10 wt. % water to form an oil recovery formulation;
- introducing the oil recovery formulation into the oil-bearing formation;
- contacting the oil recovery formulation with oil in the oil-bearing formation;
- and
- producing oil from the oil-bearing formation after introduction of the oil recovery formulation into the oil-bearing formation.
2 more elements
A composition comprising a mixture of a surfactant, a polymer, ammonia, and water.
A system, comprising:
- a surfactant;
- a polymer;
- an ammonia liquid comprising at most 10 wt. % water;
- water;
- an oil-bearing formation;
- a mechanism for introducing the surfactant, the polymer, the ammonia liquid and the water into the oil-bearing formation;
- and
- a mechanism for producing oil from the oil-bearing formation subsequent to introduction of the aqueous oil recovery formulation into the oil-bearing formation.
5 more elements
A process for recovering oil from an oil-bearing formation, comprising:
- introducing a surfactant, water, a polymer, and an ammonia liquid containing at most 10 wt. % water into the oil-bearing formation;
- mixing the surfactant, water, polymer, and ammonia liquid in the oil-bearing formation to form an oil recovery formulation;
- contacting the oil recovery formulation with oil in the oil-bearing formation;
- and
- producing oil from the oil bearing-formation after introduction of the surfactant, water, polymer and ammonia liquid into the oil-bearing formation.
2 more elements
Dependencies are inferred from the claim text.