Injection system for enhanced oil recovery

摘要

A method of enhancing oil recovery by providing a mobile surfactant injection system including a storage tank, means for injecting surfactant into a supercritical CO2 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.

主权项

1. A method of enhancing oil recovery by creating a wellbore fluid for injection into an oil field comprising a plurality of strata, said method comprising the steps of:
a. receiving a flow rate signal from a gas stream comprising a gas; b. injecting a surfactant into said gas steam at a controlled rate, wherein said controlled rate is determined from said flow rate signal; c. creating a fluid comprising said gas and said surfactant; and d. injecting said fluid into said oil field strata; wherein said surfactant is injected into said gas stream via an injection quill comprising a tip having a longer side and a shorter side; wherein the concentration of said surfactant in said wellbore fluid is maintained between a range from about 100 ppm to 5000 ppm; wherein said gas comprises supercritical CO2; and wherein said injection quill is installed with said tip proximate to the center of said gas stream.