Steam injection, air injection and production well gas-fire stimulation combined oil extraction method
A gas-fired huff and puff technology for production wells, which is applied in the fields of steam injection combined with air injection and gas-fired huff and puff oil production in production wells, and can solve problems such as uneven effectiveness, low air flooding efficiency, and single gas injection inrush.
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Embodiment 1
[0025] A steam injection combined with air injection and production well gas huff and puff oil recovery method, comprising: 1. According to the requirements of gas injection at high positions and oil production at low positions, the gas injection wells (1 ) and production wells (2) for well layout; 2. Carry out high-pressure gas injection completion for the gas injection well (1), inject 260 tons of 280°C high-temperature steam into the gas injection well (1) to increase the temperature of the formation, and establish a temperature field, After the formation is warmed up and preheated, air is injected into the gas injection well (1) for ignition, and the air flooding oil production starts; 3. After 3 months of the air flooding oil production, the production well (2) gas fire huff and puff (7) process starts: First inject 100 tons of 130°C high-temperature hot water into the production well (2), and then inject 150,000 cubic meters of air according to the formation parameters. A...
Embodiment 2
[0027] A steam injection combined with air injection and production well gas huff and puff oil recovery method, comprising: 1. According to the requirements of gas injection at high positions and oil production at low positions, the gas injection wells (1 ) and production wells (2) for well layout; 2. Carry out high-pressure gas injection completion for the gas injection well (1), inject 200 tons of 300°C high-temperature steam into the gas injection well (1) to increase the temperature of the formation, and establish a temperature field, After the formation is warmed up and preheated, air is injected into the gas injection well (1) for ignition, and the air flooding oil production starts; 3. After 3 months of the air flooding oil production, the production well (2) gas fire huff and puff (7) process starts: First inject 80 tons of 150°C high-temperature hot water into the production well (2), and then inject 200,000 cubic meters of air according to the formation parameters. Af...
Embodiment 3
[0029] A steam injection combined with air injection and production well gas huff and puff oil recovery method, comprising: 1. According to the requirements of gas injection at high positions and oil production at low positions, the gas injection wells (1 ) and production wells (2) for well layout; 2. Carry out high-pressure gas injection completion for the gas injection well (1), inject 180 tons of 320°C high-temperature steam into the gas injection well (1) to increase the temperature of the formation, and establish a temperature field, After the formation is warmed up and preheated, air is injected into the gas injection well (1) for ignition, and the air flooding oil production starts; 3. After 3 months of the air flooding oil production, the production well (2) gas fire huff and puff (7) process starts: First inject 80 tons of 150°C high-temperature hot water into the production well (2), and then inject 300,000 cubic meters of air according to the formation parameters. Af...
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