Sand prevention sliding sleeve

The utility model relates to the technical field of oil exploitation, in particular to a sand prevention sliding sleeve which comprises an outer cylinder, a first fracturing hole channel is formed in the outer cylinder, and a first positioning part and a second positioning part are arranged on the i...

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Bibliographische Detailangaben
Hauptverfasser:	NI TAO, SEO HAI-JIN, ZHANG LUN, XU FENGXIANG, YANG LIJUN, LIANG YUESONG, DU FUYUN, LI QIANG, WANG YUN, ZHANG WENBO
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 utility model relates to the technical field of oil exploitation, in particular to a sand prevention sliding sleeve which comprises an outer cylinder, a first fracturing hole channel is formed in the outer cylinder, and a first positioning part and a second positioning part are arranged on the inner wall of the outer cylinder; the fracturing sleeve is arranged in the outer cylinder in a sliding mode in the axial direction, a second fracturing hole channel is formed in the fracturing sleeve, and a first elastic piece is arranged on the outer wall of the fracturing sleeve; when the first elastic piece is connected with the first positioning part, the second fracturing hole channel and the first fracturing hole channel are staggered; and when the first elastic piece is connected with the second positioning part, the second fracturing hole channel is correspondingly communicated with the first fracturing hole channel. In this way, after fracturing operation is completed, the fracturing sleeve can be reset and