CN2846724Y - High temperature high pressure recovery type back well flushing packer - Google Patents

Abstract

The utility model relates to a high temperature high pressure recovery type well back flushing packer which is a machine for maintaining oil wells in oil fields and solves the problems that the anchorage of anchor palms of other packers is not firm, and the packers are easy to fail. The utility model is composed of a hydraulic anchor body, a sealing ring, pressing plate screw nails, an anchor palm, an anchor palm spring, an anchor palm pressing plate, a valve body spring, a valve body, a sealing packing, a male pin, a valve sleeve, a locking cap, an upper rubber barrel, a rubber barrel spacing ring, a lower rubber barrel, an outer central pipe, an inner central pipe, a leather cup upper sleeve, a vulcanized core, a leather cup, a leather cup protective sleeve, a sliding sleeve short piece, a regulating sleeve, a shearing nail, a sealing sliding sleeve, a ball throwing sliding sleeve and a lower contact. When working, the utility model is connected to the lower end of a pipe column and is sent down to a set well depth, and then, ball throwing, pressurization and setting can be carried out. The utility model has the advantages that the discharge capacity is large if wells are back flushed, the anchorage is reliable, and lower slip teeth are arranged, so that well barrels can be effectively protected.

Description

A kind of HTHP recoverable anti-flushing well packer

One, technical field: the utility model relates to a kind of oilfield oil well completion tool, especially a kind of HTHP recoverable anti-flushing well packer.

Two, background technology: at present, varied at the packer of field use, these packers do not have the anti-flushing well passage; The anchor fluke grappling is not firm; Packer lost efficacy easily.

Three, summary of the invention: it is reliable that the purpose of this utility model provides grappling, a kind of HTHP recoverable anti-flushing well packer that the anti-flushing well discharge capacity is big, the purpose of this utility model is to realize like this, it is by the hydraulic anchor body, sealing ring, bridge screw, anchor fluke, the anchor fluke spring, the anchor fluke pressing plate, the valve body spring, valve body, sealed packing, pin, valve pocket, locking cap, last packing element, the packing element spacer ring, lower rubber cylinder, exterior central tube, inner central tube, overlap on the leather cup, the sulfuration fuse, leather cup, the leather cup sheath, the sliding sleeve short circuit, regulating sleeve, shear pin, the sealing sliding sleeve, the pitching sliding sleeve, lower contact is formed by connecting, the hydraulic anchor body is connected with thread with exterior central tube, and exterior central tube is connected with lower contact; Anchor fluke, anchor fluke spring, anchor fluke pressing plate are fixed on the hydraulic anchor body by bridge screw, and sealing ring is enclosed within on the anchor fluke; The valve body spring housing is on inner central tube; Valve body is enclosed within the middle of hydraulic anchor body and the inner central tube, and sealing ring, sealed packing are enclosed within on the valve body; Valve pocket by dowel fixes on the hydraulic anchor body; Sealing ring is enclosed within on the exterior central tube; Sealing ring is arranged in the middle of locking cap and the valve pocket; Last packing element and lower rubber cylinder are enclosed within on the exterior central tube, and the packing element spacer ring is positioned in the middle of packing element and the lower rubber cylinder; Leather cup and two sulfuration fuses are one, and cover is by screwed connection on one of them sulfuration fuse and the leather cup, and another sulfuration fuse is positioned at the leather cup sheath; The sliding sleeve short circuit is enclosed within on the exterior central tube and by dowel fixes; The lower end of regulating sleeve and leather cup sheath is by screwed connection; Regulating sleeve and sealing sliding sleeve have sealing ring by dowel fixes in the middle of sealing sliding sleeve and the pitching sliding sleeve, and the pitching sliding sleeve is fixed on the exterior central tube by shear pin; Sealing ring is arranged in the middle of sliding sleeve short circuit and the lower contact.

During work, this device is received the tubing string lower end, and down to the design well depth, pitching is suppressed the seat envelope and got final product.

This device anti-flushing well discharge capacity is big; Grappling is reliable; Owing to do not have the lower slips tooth, can protect pit shaft effectively.

Four, description of drawings: Fig. 1 is a kind of structural representation of HTHP recoverable anti-flushing well packer, among the figure 1, hydraulic anchor body 2, sealing ring 3, bridge screw 4, anchor fluke 5, anchor fluke spring 6, anchor fluke pressing plate 7, valve body spring 8, valve body 9, sealed packing 10, pin 11, valve pocket 12, locking cap 13, last packing element 14, packing element spacer ring 15, lower rubber cylinder 16, exterior central tube 17, inner central tube 18, overlap 19 on the leather cup, sulfuration fuse 20, leather cup 21, leather cup sheath 22, sliding sleeve short circuit 23, regulating sleeve 24, shear pin 25, sealing sliding sleeve 26, pitching sliding sleeve 27, lower contact

Five, the specific embodiment: in Fig. 1, hydraulic anchor body 1 is connected with exterior central tube 16 usefulness threads, and exterior central tube 16 is connected with lower contact 26; Anchor fluke 4, anchor fluke spring 5, anchor fluke pressing plate 6 are fixed on the hydraulic anchor body 1 by bridge screw 3, and sealing ring 2 is enclosed within on the anchor fluke 4; Valve body spring 7 is enclosed within on the inner central tube 17; Valve body 8 is enclosed within the middle of hydraulic anchor body 1 and the inner central tube 17, and sealing ring 2, sealed packing 9 are enclosed within on the valve body 8; Valve pocket 11 is fixed on the hydraulic anchor body 1 by pin 10; Sealing ring 2 is enclosed within on the exterior central tube 16; In the middle of locking cap 12 and the valve pocket 11 sealing ring 2 is arranged; Last packing element 13 and lower rubber cylinder 15 are enclosed within on the exterior central tube 16, and packing element spacer ring 14 is positioned in the middle of packing element 13 and the lower rubber cylinder 15; Leather cup 20 and two sulfuration fuses 19 are one, and cover 18 is by screwed connection on one of them sulfuration fuse 19 and the leather cup, and another sulfuration fuse 19 is positioned at leather cup sheath 21; Sliding sleeve short circuit 22 is enclosed within on the exterior central tube 16 and by pin 10 and fixes, and in the middle of sliding sleeve short circuit 22 and the lower contact 27 sealing ring 2 is arranged; The lower end of regulating sleeve 23 and leather cup sheath 21 is by screwed connection; Regulating sleeve 23 is fixing by pin 10 with sealing sliding sleeve 25, has sealing ring 2, pitching sliding sleeve 26 to have shear pin 24 to be fixed on the exterior central tube 16 in the middle of sealing sliding sleeve 25 and the pitching sliding sleeve 26.

Claims (1)

1, a kind of HTHP recoverable anti-flushing well packer is by hydraulic anchor body (1), sealing ring (2), bridge screw (3), anchor fluke (4), anchor fluke spring (5), anchor fluke pressing plate (6), valve body spring (7), valve body (8), sealed packing (9), pin (10), valve pocket (11), locking cap (12), last packing element (13), packing element spacer ring (14), lower rubber cylinder (15), exterior central tube (16), inner central tube (17), cover (18) on the leather cup, sulfuration fuse (19), leather cup (20), leather cup sheath (21), sliding sleeve short circuit (22), regulating sleeve (23), shear pin (24), sealing sliding sleeve (25), pitching sliding sleeve (26), lower contact (27) is formed by connecting, it is characterized in that: hydraulic anchor body (1) is connected with thread with exterior central tube (16), and exterior central tube (16) is connected with lower contact (26); Anchor fluke (4), anchor fluke spring (5), anchor fluke pressing plate (6) are fixed on the hydraulic anchor body (1) by bridge screw (3), and sealing ring (2) is enclosed within on the anchor fluke (4); Valve body spring (7) is enclosed within on the inner central tube (17); Valve body (8) is enclosed within the middle of hydraulic anchor body (1) and the inner central tube (17), and sealing ring (2), sealed packing (9) are enclosed within on the valve body (8); Valve pocket (11) is fixed on the hydraulic anchor body (1) by pin (10); Sealing ring (2) is enclosed within on the exterior central tube (16); Sealing ring (2) is arranged in the middle of locking cap (12) and the valve pocket (11); Last packing element (13) and lower rubber cylinder (15) are enclosed within on the exterior central tube (16), and packing element spacer ring (14) is positioned in the middle of packing element (13) and the lower rubber cylinder (15); Leather cup (20) is an one with two sulfuration fuses (19), and cover (18) is by screwed connection on one of them sulfuration fuse (19) and the leather cup, and another sulfuration fuse (19) is positioned at leather cup sheath (21); Sliding sleeve short circuit (22) is enclosed within exterior central tube (16) and goes up and fixed by pin (10), and sealing ring (2) is arranged in the middle of sliding sleeve short circuit (22) and the lower contact (27); The lower end of regulating sleeve (23) and leather cup sheath (21) is by screwed connection; Regulating sleeve (23) is fixing by pin (10) with sealing sliding sleeve (25), has sealing ring (2), pitching sliding sleeve (26) to have shear pin (24) to be fixed on the exterior central tube (16) in the middle of sealing sliding sleeve (25) and the pitching sliding sleeve (26).