METHOD OF UNDERGROUND STORAGE OF INJECTION GAS CONTAINING CO2 GAS AND ENHANCED OIL RECOVERY

A method of underground storage of an injection gas containing CO2 gas and enhanced oil recovery includes: supplying injection water through a water flow path; jetting the injection water as a high-pressure water jet which is increased in velocity by narrowing a fluid flow through a fine bubble-gene...

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Bibliographische Detailangaben
Hauptverfasser:	TERAO, Yoshihiro, KUROSAWA, Kazuto
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	A method of underground storage of an injection gas containing CO2 gas and enhanced oil recovery includes: supplying injection water through a water flow path; jetting the injection water as a high-pressure water jet which is increased in velocity by narrowing a fluid flow through a fine bubble-generating device placed at a lower end of the water flow path; suctioning an injection gas through a gas flow path by a negative pressure generated by the Venturi effect downstream of the high-pressure water jet; jetting the injection gas as fine bubbles from the fine bubble-generating device placed at a lower end of the gas flow path; and performing underground storage of the injection gas by allowing a gas-liquid mixed fluid containing fine bubbles generated by mixing the injection water with the fine bubbles in the fine bubble-generating device to penetrate into a permeable formation such as an oil reservoir.