| 摘要 |
The method involves introducing two lines (1, 2) into a crude oil-containing layer of rock or earth, and discontinuously injecting fluid into the crude oil-containing layer of rock or earth in a positioned manner and in a gaseous state for enhancing crude oil production from the crude oil-containing layer of rock or earth. Different fluids are injected in succeeding pulses, where time delay between two injection pulses is not shorter than pulse length. The two lines are spaced apart from a conveyor line (3) at different distances.
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