CN201276993Y

CN201276993Y - Novel anti-propping slips

Info

Publication number: CN201276993Y
Application number: CNU2008201733565U
Authority: CN
Inventors: 宫建永; 刘树升; 王勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-22
Filing date: 2008-10-22
Publication date: 2009-07-22
Anticipated expiration: 2018-10-22

Abstract

The utility model relates to an oil-field down-hole tool, in particular to a novel hold-down slip. The technical scheme comprises that an upper connector is connected with a casing, the casing is internally equipped with a suppressing hole which is communicated with a hydraulic cylinder, the hydraulic cylinder is internally equipped with a piston and a slip gland, the slip gland is fixed by pins, the slip is mounted into the casing after being hung at the bottom portion of the slip gland, the slip is engaged with a cone at the lower portion to open or close the slip, the lower semi-portion of a large center pipe is equipped with a limit key, a cone and a small center pipe, the small center pipe and the cone are fixed by pins and are mounted in the casing, and an lower connector is connected with the casing through screw threads. The utility model has the advantages that the oil-field down-hole tool has reuse value, reduces operation cost, is convenient for operation when in construction, can guarantee the completeness tool integrity after the slip is released in wells, can be reused after fetching the tool in oil well operation, further reduces economic loss, and guarantees safe production.

Description

Novel anti-jack slips

One, technical field:

The utility model relates to a kind of oil field downhole tool, and particularly a kind of and packer are used, the novel anti-jack slips that moves on the tubing string that prevents to give up in the well.

Two, background technology:

At present, known common anti-jack slips is that a kind of ball-throwing type is suppressed releasing tool, the problem that exists is: operating personnel observe the well head cementing truck suppress give up after, pressure changes not obvious, be difficult to judge whether to give up successfully, the inside and outside two parts that have been divided into of the common anti-jack slips in back of giving up, interior part is taken ground out of with tubing string, instrument is imperfect in the well, for the recycling of instrument brings difficulty.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of novel anti-jack slips is provided, and can guarantee that instrument is complete after giving up in well, can reuse once more after instrument is pulled out during the oil well operation.

Its technical scheme is: mainly be made up of top connection, pressurizing port, fluid cylinder, piston, pin, slips pressure cap, slips, pin, little central tube, positive stop key, cone, big central tube, housing and lower contact; Top connection connects housing, be provided with pressurizing port in the housing and be communicated with, be provided with piston and slips pressure cap in the fluid cylinder, the slips pressure cap is fixed by pin with fluid cylinder, slips is articulated in the housing of packing into behind the slips pressure cap bottom, and slips cooperates to open or close slips with the cone of bottom; At big central tube Lower Half dress positive stop key, cone and little central tube,, in the housing of packing into, lower contact is connected with housing by screw thread with little central tube of dowel fixes and cone.

The bottom suit sand block rubber of above-mentioned top connection, sealing ring are packed in the housing top seal groove, in the housing of packing into after sealing ring is contained on the piston.

The middle part of above-mentioned housing is provided with a plurality of slips.

The beneficial effects of the utility model are: have recycle value, easy to operate when reducing operating cost and construction, after being given up, slips can guarantee the integrality of its instrument in well, during the oil well operation, pulling instrument out mouth can reuse, and reduces economic loss and has guaranteed safety in production.

Four, description of drawings:

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

Accompanying drawing 2 is half sectional views of suppressing releasing tool;

Accompanying drawing 3 is half sectional views of fishing tool;

Accompanying drawing 4 is A-A sectional views of fishing tool;

Among the last figure: top connection (1), sealing ring (2), sand block rubber (3), pressurizing port (4), fluid cylinder (5), sealing ring (6), piston (7), pin (8), slips pressure cap (9), slips (10), pin (11), little central tube (12), positive stop key (13), cone (14), big central tube (15), housing (16), lower contact (17);

Left-hand thread joint (21), steel pad (22), stripper rubber (23), steel pad (24);

Top connection (31), guider screw (32), slips (33).

Five, the specific embodiment:

1-4 in conjunction with the accompanying drawings, the utility model will be further described:

The utility model mainly is made up of top connection 1, sealing ring 2, sand block rubber 3, pressurizing port 4, fluid cylinder 5, sealing ring 6, piston 7, pin 8, slips pressure cap 9, slips 10, pin 11, little central tube 12, positive stop key 13, cone 14, big central tube 15, housing 16 and lower contact 17; When sand rubber 3 is sleeved in the top connection 1 bottom shallow slot, sealing ring 2 is packed in the housing 16 top seal grooves.Top connection 1 links to each other with housing 16 by screw thread, in the housing 16 of packing into after sealing ring 6 is contained on the piston 7.Slips 10 is articulated in the housing 16 of packing into behind slips pressure cap 9 bottoms, by pin 8 the slips pressure cap is fixed, at big central tube 15 Lower Halves dress positive stop key 13, cone 14, little central tube 12, with pin 11 fix adorn big central tube 15 behind the little central tube 12 after, in the housing 16 of packing into, lower contact 17 is connected with housing by screw thread.

During use, lower contact 17 of the present utility model is connected with the packer of going into the well, top connection 1 with suppress releasing tool (Fig. 2) and be connected after, again in tubing string connection and lower going-into-well, down after predetermined level, adopt the mechanical system compression packer to set earlier, wherein, suppress releasing tool and mainly form by left-hand thread joint 21, steel pad 22, stripper rubber 23 and steel pad 24.Suppress 12-15Mpa from well head with cementing truck then, liquid is being suppressed under the rubber sealing function of releasing tool Fig. 2 and can't missed from the bottom in paying close attention to, can only enter fluid cylinder 5 from pressurizing port 4, it is descending to promote piston 7, under the effect that under piston, pushes away, it is descending and to promote slips 10 descending that slips pressure cap 9 cuts off pin 8, slips 10 is overhanged at quilt under the conical surface effect of cone 14 and tightly is stuck on the cover tube wall, slips 10 can not be return under the frictional force effect, sand block rubber 3 blocks the silt particle that falls in the well, prevent that sand from burying slips, this moment, positive tube post was realized giving up in the shackle of the left-hand thread joint of top connection.

Salvage when giving up tubing string within the border, the inner thread make-up of following fishing tool (with reference to Fig. 3 and Fig. 4) and big central tube 15, fishing tool mainly is made up of top connection 31, guider screw 32 and slips 33, and the bottom of fishing tool promotes little central tube 12 simultaneously and cuts off pins 11, make little central tube 12 go downwards to the bottom of positive stop key 13, at this moment, the upper lifting pipe post, slips 10 is given cone 14 following thrusts, make cone 14 extrude positive stop key 13, cone 14 can be descending smoothly, regains slips 10, realizes fishing.

When the upper lifting pipe post can't unfreezing, positive tube post, because of screw thread and big central tube 15 inner threads of fishing tool Fig. 3 are the left-hand thread screw thread, but back-off proposes running string; In addition, the structure of Fig. 4 also helps carrying fishing tool.

Claims

1, a kind of novel anti-jack slips is characterized in that: mainly be made up of top connection (1), pressurizing port (4), fluid cylinder (5), piston (7), pin (8), slips pressure cap (9), slips (10), pin (11), little central tube (12), positive stop key (13), cone (14), big central tube (15), housing (16) and lower contact (17); Top connection (1) connects housing (16), being provided with pressurizing port (4) in the housing is communicated with fluid cylinder (5), be provided with piston (7) and slips pressure cap (9) in the fluid cylinder (5), by pin (8) the slips pressure cap is fixed, slips (10) is articulated in the housing (16) of packing into behind slips pressure cap (9) bottom, and slips (10) cooperates to open or close slips with the cone (14) of bottom; At big central tube (15) Lower Half dress positive stop key (13), cone (14) and little central tube (12),, in the housing of packing into (16), lower contact (17) is connected with housing by screw thread with fixing little central tube (12) of pin (11) and cone (14).

2, novel anti-jack slips according to claim 1, it is characterized in that: the bottom suit sand block rubber (3) of described top connection (1), sealing ring (2) is packed in housing (16) the top seal groove, and sealing ring (6) is contained in the housing (16) of packing into after piston (7) is gone up.

3, novel anti-jack slips according to claim 1 is characterized in that: the middle part of described housing (16) is provided with a plurality of slips (10).