CN2429624Y

CN2429624Y - Rotary packer

Info

Publication number: CN2429624Y
Application number: CN 00214633
Authority: CN
Inventors: 阎军; 肖淑民
Original assignee: Chuangxin Science & Technology Co Ltd Dongying District Dongying City
Current assignee: Chuangxin Science & Technology Co Ltd Dongying District Dongying City
Priority date: 2000-05-10
Filing date: 2000-05-10
Publication date: 2001-05-09
Anticipated expiration: 2010-05-10

Abstract

The utility model relates to a packer used in an oil-extraction well of an oil field. Based on the present packer, a rotary packer of the utility model is provided with a bearing 4 which is sheathed between an upper joint 1 and an adjusting ring 2; another bearing 4 which is sheathed between a lower joint 9 and sealing colloid 5 is clamped and positioned by a bearing cover 7 and a lower pressing ring 8, wherein the bearing cover is sheathed on a center pipe 6. The connecting part of the center pipe and the lower joint is provided with a packer of a track, and a track at the joint of the center pipe 6 and a sliding bolt 10 is milled into an open annular recess, so that the center pipe 6 can rotate after the seat is sealed. The rotary packer overcomes the problem that the center pipe can not rotate relatively when the packer works in the well, enlarges the using range of the packer, and extends the service life of a pumping oil string.

Description

The rotation packer

The utility model relates to the packer that uses under the oil well.

The downhole packer that uses has many kinds at present, mainly form by parts such as top connection, central tube, sealed colloid, supporting slip, seat envelope device and lower contacts, under the packer set state, because the track pin of central tube is in straight trough, can not relatively rotate between central tube and the sealer and make, or because of top connection and following pressure ring contacts with the sealed colloid extruding, the very big frictional force of generation and can not rotating has limited the scope of application of packer.

The purpose of this utility model is exactly the problems referred to above that exist at existing packer, and two kinds of rotatable packers are provided.

The technical solution of the utility model is:

A kind of rotation packer is made up of top connection, central tube, sealed colloid, lower contact etc., it is characterized in that: be set with bearing 4 between top connection 1 and adjustable ring 2; Bearing set 4 between lower contact 9 and sealed colloid 5, bearing 4 is by the bearing cage 7 and following pressure ring 8 clamping and positioning that are sleeved on central tube 6.Sealing ring 3 is equipped with in joint portion at top connection 1 and adjustable ring 2, in the following pressure ring 8 and the joint portion of bearing cage 7 sealing ring 3 is housed.

Another kind of rotation packer, form by top connection, central tube, sealed colloid, seat envelope device, sliding bolt, lower contact etc., its central tube and lower contact connecting portion are provided with track, by sliding bolt chucking location, it is characterized in that: be set with bearing 4 between top connection 1 and adjustable ring 2; The central tube 6 and the track of sliding bolt 10 joint portions are milled into the cannelure of open shape, the seat central tube 6 of being honored as a queen can be rotated.Sealing ring 3 is equipped with in joint portion at top connection 1 and adjustable ring 2.

Central tube can not counterrotating problem in underground work to have overcome packer according to the rotation packer of technique scheme, has enlarged the scope of application of packer, has prolonged the application life of pumping pipe string.

Description of drawings:

Fig. 1 is a kind of structure chart that rotates packer of the present utility model.The 1st, top connection, the 2nd, adjustable ring, the 3rd, sealing ring, the 4th, bearing, the 5th, sealed colloid, the 6th, central tube, the 7th, bearing cage, the 8th, following pressure ring, the 9th, lower contact.

Fig. 2 is the structure chart of another kind of rotation packer of the present utility model.The 1st, top connection, the 2nd, adjustable ring, the 3rd, sealing ring, the 4th, bearing, the 5th, sealed colloid, the 6th, central tube, the 9th, lower contact, the 10th, sliding bolt.

Fig. 3 is the expanded view of the central tube cannelure among Fig. 2.

In conjunction with Fig. 1, between top connection 1 and adjustable ring 2, be set with bearing 4; Bearing set 4 between lower contact 9 and sealed colloid 5, bearing 4 is by the bearing cage 7 and following pressure ring 8 clamping and positioning that are sleeved on central tube 6.Sealing ring 3 is equipped with in joint portion at top connection 1 and adjustable ring 2, in the following pressure ring 8 and the joint portion of bearing cage 7 sealing ring 3 is housed.

In conjunction with Fig. 2, another kind of rotation packer is made up of top connection, central tube, sealed colloid, seat envelope device, sliding bolt, lower contact etc., and its central tube and lower contact connecting portion are provided with track, by sliding bolt chucking location.Between top connection 1 and adjustable ring 2, be set with bearing 4, sealing ring 3 be housed in the joint portion of top connection 1 and adjustable ring 2.The central tube 6 and the track of sliding bolt 10 joint portions are milled into the cannelure of open shape, the seat central tube 6 of being honored as a queen can be rotated.

The utility model only discloses the embodiment of two kinds of rotation packers, with reference to such scheme the improvement of other packers is also belonged to protection domain of the present utility model.

Claims

1, a kind of rotation packer is made up of top connection, central tube, sealed colloid, lower contact etc., it is characterized in that: be set with bearing (4) between top connection (1) and adjustable ring (2); Bearing set (4) between lower contact (9) and sealed colloid (5), bearing (4) is by bearing cage that is sleeved on central tube (6) (7) and following pressure ring (8) clamping and positioning.

2, according to the rotation packer of claim 1, it is characterized in that: sealing ring (3) is equipped with in the joint portion at top connection (1) and adjustable ring (2), in the following pressure ring (8) and the joint portion of bearing cage (7) sealing ring (3) is housed.

3, a kind of rotation packer, form by top connection, central tube, sealed colloid, seat envelope device, sliding bolt, lower contact etc., its central tube and lower contact connecting portion are provided with track, by sliding bolt chucking location, it is characterized in that: be set with bearing (4) between top connection (1) and adjustable ring (2); The central tube (6) and the track of sliding bolt (10) joint portion are milled into the cannelure of open shape, the seat central tube (6) of being honored as a queen can be rotated.

4, according to the rotation packer of claim 3, it is characterized in that: sealing ring (3) is equipped with in the joint portion at top connection (1) and adjustable ring (2).