| 摘要 |
A method and apparatus for enhanced oil recovery comprising separating CO2 gas from coal or flue emissions of a power plant, and flash freezing the CO2 gas with super chilled air, to form frozen CO2 ice blocks or cylinders, wherein the CO2 blocks or cylinders can then be inserted into an abandoned oil well, and the CO2 can be allowed to warm up and change phase to a gas, which enables the CO2 gas to mix with the oil, and helps reduce the viscosity of the oil and allows it to flow more freely, so that it can be pumped out using conventional equipment. A first application comprises having top and bottom valves and the CO2 blocks or cylinders being allowed to change phase to a gas while inside the injection pipe, to increase the pressure therein, such that, by opening the bottom valve, pressurized jets of CO2 gas can be released into the oil, causing the oil to mix vigorously with the carbon dioxide gas, and reduce the viscosity thereof. A second application comprises allowing the CO2 cylinders or blocks to drop into the oil itself, wherein the relatively warm oil causes the frozen CO2 to change phase to a gas, which causes violent gas bubbles to form that vigorously mix with the oil, which helps reduce the viscosity of the oil so it flows more freely through the reservoir. |
| 主权项 |
1. A system for recovering oil from an existing oil well that communicates with an underground oil reservoir, comprising:
a chamber for mixing carbon dioxide gas with super chilled air to produce frozen carbon dioxide crystals; an apparatus for agglomerating the carbon dioxide crystals to form frozen carbon dioxide blocks or cylinders; a transporter for transporting the blocks or cylinders to said existing oil well and a device for lifting and dropping the blocks or cylinders into said existing oil well; and a process that allows the blocks or cylinders to change phase to a gas inside said existing oil well, wherein the carbon dioxide gas that is released mixes vigorously within the oil in the reservoir, which in turn, helps to lower the viscosity of the oil, and enables it to be extracted using conventional pumping equipment. |
