CN2637715Y

CN2637715Y - Well washing packer

Info

Publication number: CN2637715Y
Application number: CN 03277259
Authority: CN
Inventors: 毛清林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-22
Filing date: 2003-07-22
Publication date: 2004-09-01
Anticipated expiration: 2013-07-22

Abstract

The utility model relates to a well-cleaning packer and is mainly to solve the problems of the existing packer such as the complex structure and the poor packing effect. The utility model is characterized in that: An internal central pipe (9) and a lock sleeve (2) are respectively arranged inside and outside of a top joint (1); a locking bed (3) which is fixed at the upper end of an outer central tube (8) through a pin (5) is arranged between the internal central pipe (9) and the lock sleeve (2); a row of locking teeth (4) is arranged on the locking bed (3) and the teeth space between the locking teeth (4) is the non-integral times of that of the lock sleeve (2); A piston (11) is arranged between the internal central pipe (9) and a lower joint (12); the outer central pipe (8) of a rubber cylinder seat (13) is arranged on the shoulder between the locking bed (3) and the piston (11). The rubber cylinder seat (13) is surrounded by the lock sleeve (2), the locking bed (3), the lower joint (12) and the piston (11). The utility model has simple structure and good packing effect.

Description

A kind of flushing packer

Technical field:

The utility model relates to the used downhole tool of seperated layer water injection in the oil recovery field, oil field, belongs to a kind of flushing packer.

Background technology:

During the oil field oil recovery technique is produced, producing well will satisfy the needs that recover the oil by seperated layer water injection mostly, water injection well is provided with packer at interlayer mostly and carries out well-flushing, water filling, and used packer structurally is provided with the well-flushing piston separately at present, and have a hydraulic cylinder that promotes the well-flushing piston, thereby the seal point that makes packer self is many relatively 3 points, complex structure, seal point is prone to leakage more; Simultaneously, what it adopted on locking mode is the form that two jump rings advance simultaneously, lock simultaneously, like this in the compressed process of packing element, jump ring must be whenever to advance one to lock the tooth distance, jump ring just can be finished once locking, if the compressed stroke of packing element is less than a tooth distance, jump ring will be return, and causes its locking effect poor.

The utility model content:

In order to overcome the deficiency of existing packer construction complexity and locking effect difference, the utility model provides a kind of flushing packer, and this flushing packer has characteristics simple in structure and that locking effect is good.

The technical solution of the utility model is: this flushing packer comprises lower contact, interior exterior central tube and glue tube base, inner central tube places in the lower contact, be equipped with the packing element of spacer ring phase clamping between the glue tube base, be equipped with inner central tube and lock sleeve inside and outside the top connection respectively, be equipped with the locking bed that is fixed on the exterior central tube upper end by pin between inner central tube and the lock sleeve, be equipped with the locking tooth on the locking bed, the tooth spacing of locking tooth is the non-integral multiple of lock sleeve tooth distance; Be equipped with piston between lower contact and the inner central tube; Be equipped with the exterior central tube of stuck glue cylinder base mutually between the shoulder of locking bed and piston, glue tube base places between lock sleeve, locking bed and lower contact, the piston.

The utlity model has following beneficial effect: owing to being equipped with inner central tube and lock sleeve respectively inside and outside the top connection of taking in the such scheme, be equipped with the locking bed that is fixed on the exterior central tube upper end by pin between inner central tube and the lock sleeve, be equipped with the locking tooth on the locking bed, the tooth spacing of locking tooth is the non-integral multiple of lock sleeve tooth distance, in the process that clip spring seat is advanced forward, when the locking of first road locking tooth, other locking tooth has left corresponding locked position, and then form the locking mode that circulates gradually, the compressed stroke of packing element less than a tooth apart from the time, still can lock, improve effective compression travel of packing element, make its locking effect good; Be equipped with piston between lower contact and the inner central tube, be equipped with the exterior central tube of stuck glue cylinder base mutually between the shoulder of locking bed and piston, glue tube base places between lock sleeve, locking bed and lower contact, the piston, set with well-flushing and finish by a piston, simplified overall structure, reduce seal point, improved sealing performance.

Description of drawings:

Accompanying drawing 1 is a structure sectional view of the present utility model;

Accompanying drawing 2 is partial structurtes sectional views of lock sleeve 2 and locking bed 3 and locking tooth 4 among Fig. 1.

1-top connection among the figure, the 2-lock sleeve, the 3-locking bed, 4-locks tooth, 5-pin, 6-packing element, 7-spacer ring, 8-exterior central tube, 9-inner central tube, 10-O-ring seal, 11-piston, 12-lower contact, 13-glue tube base.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1, this flushing packer comprises lower contact (1,12), interior exterior central tube (9,8) and glue tube base 13, inner central tube 9 places in the lower contact (1,12), is equipped with the packing element 6 of spacer ring 7 phase clampings between the glue tube base 13, be equipped with inner central tube 9 and lock sleeve 2 inside and outside the top connection 1 respectively, be equipped with the locking bed 3 that is fixed on exterior central tube 8 upper ends by pin 5 between inner central tube 9 and the lock sleeve 2; As shown in Figure 2, be equipped with locking tooth 4 on the locking bed 3, the tooth spacing of locking tooth 4 is the non-integral multiple of lock sleeve 2 tooth distances, and the lock tooth of just locking on tooth 4 and the lock sleeve 2 is not to coincide one to one simultaneously, when 4 lockings of first road locking tooth, other locking tooth 4 has left corresponding locked position, and then form the locking mode that circulates gradually, packing element 6 compressed strokes less than a tooth apart from the time, still can lock, improve effective compression travel of packing element 6, made its locking effect good; As shown in Figure 1, be equipped with piston 11 between lower contact 12 and the inner central tube 9, be equipped with the exterior central tube 8 of stuck glue cylinder base 13 mutually between the shoulder of locking bed 3 and piston 11, glue tube base 13 places between lock sleeve 2, locking bed 3 and lower contact 12, the piston 11, when setting, piston 11 compression packing elements 6 promote exterior central tube 8 simultaneously and move upward, and then drive locking bed 3 also moves upward, make locking tooth 4 and lock sleeve 2 lockings, finish setting, set like this with well-flushing and can finish, simplified overall structure by a piston 11, reduce sealing ring 10, improved sealing performance.

Claims

1, a kind of flushing packer, comprise lower contact (1,12), interior exterior central tube (9,8) and glue tube base (13), inner central tube (9) places lower contact (1,12) in, be equipped with the packing element (6) of spacer ring (7) phase clamping between the glue tube base (13), it is characterized in that: be equipped with inner central tube (9) and lock sleeve (2) inside and outside the top connection (1) respectively, be equipped with the locking bed (3) that is fixed on exterior central tube (8) upper end by pin (5) between inner central tube (9) and the lock sleeve (2), be equipped with locking tooth (4) on the locking bed (3), the tooth spacing of locking tooth (4) is the non-integral multiple of lock sleeve (2) tooth distance; Be equipped with piston (11) between lower contact (12) and the inner central tube (9); Be equipped with the exterior central tube (8) of stuck glue cylinder base (13) mutually between the shoulder of locking bed (3) and piston (11), glue tube base (13) places between lock sleeve (2), locking bed (3) and lower contact (12), the piston (11).