C ring sliding sleeve sandblasting device and use method thereof

Abstract

The invention relates to the field of oil well fracturing equipment, in particular to a C ring sliding sleeve sandblasting device and a use method thereof. The C ring sliding sleeve sandblasting device comprises an upper connector, an outer working cylinder, a lower connector and an inner sliding sleeve, wherein sandblasting holes are formed in the side wall of the upper connector, and an inner working cylinder is connected to the outer edge of the lower end of the inner sliding sleeve in a threaded mode; a central pipe is slidably arranged in the inner sliding sleeve, and a spring is arrangedon the part, between an upper ring platform and the lower end of the inner sliding sleeve, of the central pipe in a sleeving mode; a plurality of liquid inlet holes are formed in the circumference ofthe central pipe in an uniform distribution mode, and a sealing head is connected to the inner edge of the lower end of the inner working cylinder in a threaded mode; a receiving cylinder is connected to the inner edge of the upper end of the sealing head in a threaded mode, and a plurality of ring sleeve assemblies are overlapped on the inner part, between the upper end of the receiving cylinderand the lower end of the central pipe, of the inner working cylinder; and a ball seat is arranged in the lowest-part ring sleeve assembly. According to the C ring sliding sleeve sandblasting device and the use method thereof, the diameters of all the sliding sleeves are uniform, the diameters of the sliding sleeves are larger than the diameters of general sliding sleeves, the throttling effect isreduced, the sizes of thrown balls are all uniform, the input cost can be reduced, the device can be used in multi-well conditions of a vertical well, a horizontal well and a directional well and inmultiple environments, the sealing series can be increased, and the construction difficulty is reduced.

Description

technical field [0001] The invention relates to the field of oil well fracturing equipment, in particular to a C-ring sliding sleeve sand blaster and a using method thereof. Background technique [0002] The existing sand blasters used for stationary pipe strings are only graded on the sliding sleeve and the ball. The characteristic is that the more layers are divided, the diameter of the sliding sleeve will gradually decrease from top to bottom, and the diameter of the ball will gradually decrease. Due to the limitation of size, the number of sealing layers will not be too many, and the supporting tools are not easy to produce. During the construction process, the sliding sleeve with too small diameter will cause a lot of fluid friction resistance, thus increasing the construction difficulty and reducing the Construction scale. Contents of the invention [0003] The technical problem to be solved by the present invention is that all sliding sleeves have a uniform diamete...

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Problems solved by technology

[0002] The existing sand blasters used for stationary pipe strings are only graded on the sliding sleeve and the ball. The characteristic is that the more layers are divided, the diameter of the sliding sleeve will gradually decrease from top to bottom, and the diameter of the ball will gradually decrease. Due to the limitation of size, the number of sealing layers will not be too many, and the supporting tools are not easy to produce. During the construction process, the sliding sleeve with too small diameter will cause a lot of fluid friction resistance, thus increasing the construction difficulty and reducing the Construction scale

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