Injection System for Enhanced Oil Recovery
AssigneeDow Global Technologies LLC
InventorsAaron W. Sanders, Terry A. Mann
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Abstract
A method of enhancing oil recovery by providing a mobile surfactant injection system including a storage tank, means for injecting surfactant into a scCO2 stream, and a feedback control for maintaining a constant concentration of surfactant in a gas stream, the method including the steps of creating a fluid comprising the surfactant and the injection gas, and injecting the fluid into the oil field strata.
Claims14
A mobile enhanced oil recovery apparatus for creating a wellbore fluid comprising a gas and a liquid, said apparatus comprising:
- a. a storage tank for containing a liquid, said liquid to be injected into a gas stream;
- b. a pump for delivering liquid to said gas stream;
- c. means for injecting a liquid into a gas stream;
- and
- d. a feedback control for maintaining a constant concentration of liquid in the gaseous steam.
The apparatus of any of the preceding claims, wherein said gas comprises supercritical CO2.
The apparatus of any of the preceding claims, wherein said storage tank has a capacity ranging from about 500 to about 6,000 gallons.
The apparatus of any of the preceding claims, wherein said storage tank comprises a thermal element for heating and cooling.
The apparatus of any of the preceding claims, wherein said injecting means comprises on injection quill.
The apparatus of any of the preceding claims, wherein said feedback control maintains the surfactant in the wellbore fluid at a concentration ranging from about 100 to 5,000 ppm.
A method of enhancing oil recovery by creating a wellbore fluid for injection into an oil field by a enhanced oil recovery apparatus, said apparatus comprising a storage tank, means for injecting surfactant into a scCO2 stream, and a feedback control for maintaining a constant concentration of surfactant in a gas stream said method comprising the steps of:
- a. injecting said surfactant into a gas stream at a controlled rate;
- b. creating a fluid comprising said gas and surfactant;
- and
- c. injecting said fluid into said oil field strata.
Dependencies are inferred from the claim text.