Multi-round low-frequency pulsation chemical agent injection method

The invention discloses a multi-round low-frequency pulsation chemical agent injection method which comprises the following steps: S1, determining an implementation target block, and collecting geological fluid parameters; s2, screening an optimal pulsation parameter; s3, the attenuation condition o...

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Bibliographische Detailangaben
Hauptverfasser:	WANG CONG, WANG LUSHAN, ZHANG ZITAN, WANG PENGFEI, LI LIN, WANG PENG, YANG QINQIN, ZHANG XIAOMEI, ZHANG GUANGZHONG, MA YANJIE
Format:	Patent
Sprache:	chi ; 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:	The invention discloses a multi-round low-frequency pulsation chemical agent injection method which comprises the following steps: S1, determining an implementation target block, and collecting geological fluid parameters; s2, screening an optimal pulsation parameter; s3, the attenuation condition of the pulsation in the process of injecting the pulsation into the stratum is determined; s4, pulse amplitude and frequency needing to be generated are determined; the method is suitable for the technical field of oil exploitation, two kinds of ground/underground hydraulic pulsation generation technologies are formed, multi-round implementation of chemical huff and puff and chemical flooding oil extraction without moving a tubular column can be achieved, the construction technology is simple and convenient, and safety is high. The low-frequency hydraulic pulsation generated in the two modes is directly generated, conversion is not needed, the energy loss is small, and the acting effect is strong. The characteristic