CN201047268Y

CN201047268Y - Anti-jack packer

Info

Publication number: CN201047268Y
Application number: CNU2007202004676U
Authority: CN
Inventors: 袁新生
Original assignee: XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Current assignee: XINJIANG PETROLEUM ADMINISTRATION OIL-PRODUCTION TECHNOLOGY INST
Priority date: 2007-06-15
Filing date: 2007-06-15
Publication date: 2008-04-16
Anticipated expiration: 2017-06-15

Abstract

The utility model relates to the technical field of packers in oilfield oil wells, provides a pressure back packer and comprises an elastic claw, an upper joint, a slide sleeve, a central tube, a slip, a conical body, a boundary rubber packer, a rubber packer casing, a lower press sleeve, a collar, a seal tube and a lower joint, wherein, the upper joint which is internally provided with the elastic claw is provided with a groove, a boss which can be blocked into the groove is arranged on the elastic claw, and the upper joint is internally provided with the slide sleeve which can be inserted into the elastic claw and is connected with the upper joint through an upper shear nail; the inner side of the lower end of the upper joint is connected with the upper end of the central tube which is sleeved with a spring, a slip frame and the conical body in sequence, the upper end of a connecting sleeve is arranged at the lower end of the upper joint, and a boss at the upper end of the connecting sleeve can be blocked at the top part of the boss at the lower end of the upper joint; the spring is arranged between the connecting sleeve and the slip frame or the bottom part of the upper joint, and the lower end of the connecting sleeve is connected with the slip frame. The utility model with reasonable and compact structure is characterized by simple structure, convenient construction operation and safety and reliability.

Description

Anti-top packer

One, technical field

The utility model relates to the packer technology field in the oilfield, is a kind of anti-top packer.

Two, background technology

The oil field on stream, because stratum water outlet, have a strong impact on the ordinary production of oil well, by adopting effective mechanical water proof technology, take measures targetedly, can be with main wet well section every living, thus improve the production status of oil well, at present, domestic oilfield water proof flow string kind is more, has one-trip string to finish, and also has several times tubing strings of branch to finish, have and give up, also have and do not give up, have two packers to be drillable, pressured heavy setting arranged, have by hydraulic setting, self-sealing is also arranged, with one or two packer with water layer every living, cooperate oil well pump to reach the purpose of water proof oil pumping, but all there is complex structure, the problem of operating difficulties.

Three, summary of the invention

The utility model provides a kind of anti-top packer, has overcome the deficiency of above-mentioned prior art, have simple in structure, construction behaviour does conveniently, safe and reliable characteristics.

The technical solution of the utility model realizes by following measure: a kind of anti-top packer, and it comprises, and elasticity is grabbed, top connection, sliding sleeve, central tube, slips, cone, limit packing element, packing element sleeve pipe, gland, box cupling, sealed tube and lower contact down; Flexible grabbing in top connection, fluted in top connection, the boss that can stick into groove on grabbing, elasticity is arranged, and in top connection, have and can inject the sliding sleeve of elasticity in grabbing, sliding sleeve links together by last shear pin and top connection; Inboard upper end with central tube, the lower end of top connection links together, on central tube, be set with spring in regular turn, the slips frame, slips and cone, the upper end of adapter sleeve is enclosed within the lower end of top connection, the boss of adapter sleeve upper end can be stuck in the boss top of top connection lower end, spring withstands between top connection bottom and adapter sleeve or the slips frame, the lower end of adapter sleeve and slips frame link together, the lower end of central tube and the upper end of box cupling link together, in the outside of central tube the packing element bushing pipe is arranged, form cavity between central tube and the packing element bushing pipe, plush copper is arranged on central tube, on the packing element bushing pipe, be set with the limit packing element in regular turn, spacer ring and middle packing element, the upper end and the cone of packing element bushing pipe link together, the lower end of packing element bushing pipe and the upper end of pressure cap link together, pressure cap is sleeved on the central tube, the upper end of following gland is sleeved on the packing element bushing pipe, the lower end of following gland and the outer end of lower contact link together, following gland is installed on the box cupling by following shear pin, the lower end of box cupling and the upper end of sealed tube link together, and the lower end of sealed tube is sleeved in the lower contact.

Be further optimization and/or improvements below to above-mentioned technical solutions of the utility model:

The slips spring that can make slips be close to central tube can be arranged in the above-mentioned slips, and the slips spring outside there is the gland that can be pressed on the slips spring.

Between above-mentioned gland down and the box cupling anti-rotation pin can be installed.

Can have on the above-mentioned slips frame can be by the slips head of adapter sleeve holddown spring.

Can be between above-mentioned top connection and the central tube by being threaded togather.

The lower end of above-mentioned adapter sleeve can link together by screw thread and slips frame.

The utility model reasonable and compact in structure, have simple in structure, construction behaviour does conveniently, safe and reliable characteristics, utilizes this anti-top packer can realize that one-trip string just can finish two packer settings, give up and carry out being lowered to of insert pump seating nipple; And, both can give up as required and also can not give up by the twin-stage packer water proof flow string that the utility model is formed; After the twin-stage packer water proof flow string of being made up of this utility model sets in addition,, the oil pipe ballast can be alleviated to slow down because the sucker rod partial wear that ballast causes tubing bending as not giving up.

Four, description of drawings

Accompanying drawing 1 is for the master of the utility model most preferred embodiment left half looks the sectional structure schematic diagram,

Accompanying drawing 2 is for the master of the utility model most preferred embodiment right half looks the sectional structure schematic diagram,

Coding in the accompanying drawing is respectively: 1 grabs for elasticity, and 2 is groove, and 3 are top connection, and 4 is sliding sleeve, and 5 is boss, 6 is last shear pin, and 7 is adapter sleeve, and 8 is spring, and 9 is the slips frame, and 10 is slips, 11 is the slips spring, and 12 is central tube, and 13 is gland, and 14 is cone, 15 is plush copper, and 16 is the limit packing element, and 17 is spacer ring, and 18 is middle packing element, 19 is the packing element bushing pipe, and 20 are following gland, and 21 is pressure cap, and 22 is the anti-rotation pin, 23 is box cupling, and 24 are following shear pin, and 25 is sealed tube, and 26 are lower contact.

Five, the specific embodiment

The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.

Below in conjunction with embodiment and accompanying drawing the utility model is further described:

Shown in attached Fig. 1 and 2, this anti-top packer comprises that elasticity grabs 1, top connection 3, sliding sleeve 4, central tube 12, slips 10, cone 14, limit packing element 16, packing element sleeve pipe 18, gland 20, box cupling 23, sealed tube 25 and lower contact 26 down; Flexiblely in top connection 3 grab 1, fluted 2 in top connection 3, grabbing in elasticity has the boss 5 that can stick into groove 2 on 1, has can inject elasticity and grab sliding sleeve 4 in 1 in top connection 3, and sliding sleeve 4 links together with top connection 3 by last shear pin 6; Inboard upper end with central tube 12, the lower end of top connection 3 links together, on central tube 12, be set with spring 8 in regular turn, slips frame 9, slips 10 and cone 14, the upper end of adapter sleeve 7 is enclosed within the lower end of top connection 3, the boss of adapter sleeve 7 upper ends can be stuck in the boss top of top connection 3 lower ends, spring 8 withstands between top connection 3 bottoms and adapter sleeve 7 or the slips frame 9, the lower end of adapter sleeve 7 and slips frame 9 link together, the upper end of the lower end of central tube 12 and box cupling 23 links together, in the outside of central tube 12 packing element bushing pipe 19 is arranged, form cavity between central tube 12 and the packing element bushing pipe 19, plush copper 15 is arranged on central tube 12, on packing element bushing pipe 19, be set with limit packing element 16 in regular turn, spacer ring 17 and middle packing element 18, the upper end of packing element bushing pipe 19 and cone 14 link together, the upper end of the lower end of packing element bushing pipe 19 and pressure cap 21 links together, pressure cap 21 is sleeved on the central tube 12, the upper end of following gland 20 is sleeved on the packing element bushing pipe 19, the outer end of the lower end of following gland 20 and lower contact 26 links together, following gland 20 is installed on the box cupling 23 by following shear pin 24, the upper end of the lower end of box cupling 23 and sealed tube 25 links together, and the lower end of sealed tube 25 is sleeved in the lower contact 26.

Can according to actual needs above-mentioned anti-top packer be made further optimization and/or improvements:

Shown in attached Fig. 1 and 2, can well be adjacent to central tube 12 in order to make slips 10,10 have the slips spring 11 that can make slips 10 be close to central tube 12 in slips, and there is the gland 13 that can be pressed on the slips spring 11 in slips spring 11 outsides.

Shown in attached Fig. 1 and 2, rotate simultaneously with box cupling 23 for fear of following gland 20, between following gland 20 and the box cupling 23 anti-rotation pin 22 is installed.

Shown in attached Fig. 1 and 2, can be close to central tube 12 in order to make spring 8, can have on the slips frame 9 can be by the slips head of adapter sleeve 7 holddown springs 8.

Shown in attached Fig. 1 and 2, according to actual needs, can be between top connection 3 and the central tube 12 by being threaded togather.

Shown in attached Fig. 1 and 2, according to actual needs, the lower end of adapter sleeve 7 can link together by screw thread and slips frame 9.

Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.

The concrete application of the utility model most preferred embodiment is as follows: be connected with oil pipe between the top connection with lower contact 26 of the present utility model and the pressured heavy slip-type packer that sets, again with elastic claw 1 of the present utility model with oil pipe connect the back with oil pipe with wet well fragment position in two packer lower going-into-wells, the utility model is positioned at wet well section top, and slip-type packer is positioned at the wet well pars infrasegmentalis.Put into oil pipe ballast set packer, the slips of the packer of bottom struts earlier and afterwards is anchored on the sleeve pipe, and packing element is compressed; The lower contact of the present utility model 26 on top connects oil pipe and is supported on the lower packer, elastic claw 1, top connection 3, central tube 12, box cupling 23 and sealed tube 25 are cut off shear pin 24 DL synchronizations under the oil pipe ballast effect of top, the plush copper 15 of central tube 12 lower ends is pressed on the pressure cap 21, pressure cap 21 drives packing element bushing pipe 19 compression limit packing element 16 and middle packing elements 18, and drive top connection 3 compression springs 8 and promote slips 10 again simultaneously and be close to cone 14 DL synchronizations, after loading stops, pitching is suppressed sliding sleeve 4 is hit down, 3 constraints of elastic claw 1 and top connection were lost efficacy, elastic claw 1 is thrown off with top connection 3 when carrying oil pipe, and this utility model has realized setting give up (oil pipe and packer are thrown off).Oil pipe and insert pump seating nipple are carried to design attitude, and following insert pump installs well head and begins pumping.

Claims

1. anti-top packer is characterized in that comprising that elasticity is grabbed, top connection, sliding sleeve, central tube, slips, cone, limit packing element, packing element sleeve pipe, gland, box cupling, sealed tube and lower contact down; Flexible grabbing in top connection, fluted in top connection, the boss that can stick into groove on grabbing, elasticity is arranged, and in top connection, have and can inject the sliding sleeve of elasticity in grabbing, sliding sleeve links together by last shear pin and top connection; Inboard upper end with central tube, the lower end of top connection links together, on central tube, be set with spring in regular turn, the slips frame, slips and cone, the upper end of adapter sleeve is enclosed within the lower end of top connection, the boss of adapter sleeve upper end can be stuck in the boss top of top connection lower end, spring withstands between top connection bottom and adapter sleeve or the slips frame, the lower end of adapter sleeve and slips frame link together, the lower end of central tube and the upper end of box cupling link together, in the outside of central tube the packing element bushing pipe is arranged, form cavity between central tube and the packing element bushing pipe, plush copper is arranged on central tube, on the packing element bushing pipe, be set with the limit packing element in regular turn, spacer ring and middle packing element, the upper end and the cone of packing element bushing pipe link together, the lower end of packing element bushing pipe and the upper end of pressure cap link together, pressure cap is sleeved on the central tube, the upper end of following gland is sleeved on the packing element bushing pipe, the lower end of following gland and the outer end of lower contact link together, following gland is installed on the box cupling by following shear pin, the lower end of box cupling and the upper end of sealed tube link together, and the lower end of sealed tube is sleeved in the lower contact.

2. anti-top according to claim 1 packer is characterized in that having in the slips slips spring that can make slips be close to central tube, and there is the gland that can be pressed on the slips spring in the slips spring outside.

3. anti-top according to claim 1 and 2 packer is equipped with the anti-rotation pin between gland and the box cupling under it is characterized in that.

4. anti-top according to claim 1 and 2 packer, it is characterized in that having on the slips frame can be by the slips head of adapter sleeve holddown spring.

5. anti-top according to claim 3 packer, it is characterized in that having on the slips frame can be by the slips head of adapter sleeve holddown spring.

6. anti-top according to claim 1 and 2 packer is characterized in that between top connection and the central tube by being threaded togather.

7. anti-top according to claim 3 packer is characterized in that between top connection and the central tube by being threaded togather.

8. anti-top according to claim 4 packer is characterized in that between top connection and the central tube by being threaded togather.

9. anti-top according to claim 5 packer is characterized in that between top connection and the central tube by being threaded togather.

10. anti-top according to claim 9 packer is characterized in that the lower end of adapter sleeve links together by screw thread and slips frame.