US 11,441,410 B2 · System and method for oil production separation

Abstract

A method of separating hydrocarbons from an oil field production stream may include providing a production stream having a gas phase and a liquid phase, the production stream including oil, hydrocarbon gas, carbon dioxide, and water; substantially separating the gas phase from the liquid phase; separating the liquid phase into a stream composed substantially of oil and a stream substantially composed of water, the stream substantially composed of water containing carbon dioxide absorbed therein; pressurizing the water stream containing carbon dioxide absorbed therein; and injecting the pressurized water stream containing carbon dioxide absorbed therein to a downhole injection location; the method may include operating each step at a pressure above 150 psig.

Claims19

Dependent claims

A method of separating hydrocarbons from an oil field production stream comprising steps of:

(i) providing a production stream having a gas phase and a liquid phase, the production stream including oil, hydrocarbon gas, carbon dioxide, and water;
(ii) providing the production stream to a gas-liquid separator to separate the gas phase from the liquid phase, the separated liquid phase including oil and water, the water having carbon dioxide gas absorbed therein;
(iii) providing the separated liquid phase to a liquid-liquid separator to separate the oil from the water, to form a water stream having the carbon dioxide absorbed therein;
(iv) providing the water stream having the carbon dioxide absorbed therein to an injection pump to form a pressurized water stream;
and
(v) providing the pressurized water stream to an injection well;
wherein the method includes operating each step at a pressure above 150 psig.

4 more elements

Dependencies are inferred from the claim text.

System and method for oil production separation

Life of this patent

System and method for oil production separation

Life of this patent

Abstract

Claims19