Fire flooding; in-situ combustion

Japanese: 火攻法 - かこうほう（英語表記）fire flooding; in-situ combustion

This is a method of igniting an oil reservoir while pumping air from the surface, burning part of the oil in the reservoir, and facilitating the movement of the oil from the reservoir to the well by increasing the temperature and pressure of the reservoir. This is an effective method for extracting oil from high-viscosity oil reservoirs and oil sands. There is also a wet combustion method in which water is injected simultaneously with or alternately with air to improve the efficiency of the sweep.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

地表から空気を送り込みながら油層に点火して，油層の油の一部を燃焼させ，油層温度の上昇と油層圧力の上昇により油層から坑井への油の移動を容易とする方法。高粘度油層やオイルサンドの油の採取に有効な方法である。水を空気と同時または交互に圧入して掃攻効率をよくする湿式火攻法もある。

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