扩径式水力喷射器

Hole enlargement formula hydraulic ejector

Abstract

The utility model relates to a hole enlargement formula hydraulic ejector is equipped with the screw thread through -hole of a plurality of circumference equipartition on the circumference of the tubulose body of the internal wall laminating with the well, screw thread through -hole female connection outer nozzle, and outer nozzle's center is equipped with the variable - diameter hole that the from interior to exterior diameter diminishes, connecting top connection and lower clutch at body both ends thread sealing, setting up cyclic annular inner nozzle at the interior circumferential sealing of body, inner nozzle is last to be equipped with the through -hole that corresponds with the outer nozzle position, at the sealed sliding sleeve inner core of the common sealing connection of interior circumference of top connection, inner nozzle and lower clutch, be equipped with on the sealed sliding sleeve inner core and corresponded the liquid hole with inner nozzle through -hole location, the tip that is close to the lower clutch at sealed sliding sleeve inner core is equipped with the ball seat. This hydraulic ejector is equipped with inside and outside double -deck nozzle, and outer nozzle be for can wearing and tearing the formula nozzle, can be in jet perforating process automatic hole enlargement for satisfy perforation, fracturing integration technology demand.
本实用新型涉及一种扩径式水力喷射器,在与井体内壁贴合的管状本体的圆周上设有若干个圆周均布的螺纹通孔,螺纹通孔内螺纹连接外喷嘴,外喷嘴的中心设有由内至外直径变小的变径孔;在本体两端螺纹密封连接上接头和下接头,在本体的内圆周密封设置环状内喷嘴,内喷嘴上设有与外喷嘴位置对应的通孔;在上接头、内喷嘴和下接头的内圆周共同密封连接密封滑套内芯,密封滑套内芯上设有与内喷嘴通孔位置对应过液孔,在密封滑套内芯靠近下接头的端部设有球座。该水力喷射器设有内、外双层喷嘴,外喷嘴为可磨损式喷嘴,可以在喷射射孔工艺过程中自动扩径,用以满足射孔、压裂一体化工艺需求。

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