A kind of Bidirectional anchor packer of bilingual envelope
Technical field
This utility model relates to the Bidirectional anchor packer of a kind of bilingual envelope.
Background technology
Along with deep-well, the continuous probing of ultradeep well, particularly it is similar to the probing of the deep-well such as Tarim Oilfield, northwest office, to packing
The sealing property of device, grappling performance and can be taken off performance and have higher requirement.Typically in this kind of measure is constructed, packer is basic
Using Bidirectional anchoring packer to insulate, be characterized in that grappling is firm, tubing string is difficult to wriggle, but existing problems are bidirectionally anchorings
Sometimes easily cause deblocking difficulty, or need to bore grinding envelope.
Utility model content
Technical problem to be solved in the utility model is that the not enough offer one existed for above-mentioned prior art can be passed through bilingual
Envelope mode unseals, and improves the Bidirectional anchor packer of the bilingual envelope solving sealing property.
The technical scheme that this utility model is used is: the Bidirectional anchor packer of a kind of bilingual envelope, it is characterised in that: include depending on
Secondary connected top connection, inner central tube, lower contact, outside inner central tube successively outer be cased with packing element sealing mechanism, setting mechanism,
Sitting mechanism for card, at the first solution sealing mechanism that is connected above of packing element sealing mechanism, described first solves sealing mechanism is connected with top connection,
Described packing element sealing mechanism is connected with sitting mechanism for card by the second solution sealing mechanism.
By technique scheme, described first solves sealing mechanism includes the upper overcoat being set in outside top connection, is connected with upper overcoat lower end
Balancing plug, the fluid course that arranges on inner central tube, by bonded between described upper overcoat and top connection, and pass through
Deblocking pin is fixed in top connection, and described balancing plug abuts against with top connection, and it is logical to seal up the liquid stream on inner central tube
Road, its lower end is connected with packing element sealing mechanism.
By technique scheme, described second solves sealing mechanism includes that spring detent, the upper end of described spring detent are outwardly convex
Pawl, is provided with groove in the lower end of the upper exterior central tube of packing element sealing mechanism, and on inner central tube, corresponding dog is provided with boss,
The dog of spring detent is locked in the groove of upper exterior central tube by the boss of inner central tube, the lower end of described spring detent and seat mechanism for card
Lower exterior central tube connected by right-handed thread.
By technique scheme, described packing element sealing mechanism includes the upper exterior central tube being set in outside inner central tube, at upper center tube
It is arranged with outward glue tube base, protection bowl, end packing element, spacer ring, middle packing element, spacer ring, lower rubber cylinder, lower rubber cylinder seat successively.
By technique scheme, described setting mechanism is included the draining set being connected by the first startup shear pin with lower rubber cylinder seat and lets out
The lower overcoat that oil jacket lower end is connected, abuts in the lower end of draining set and has upper piston, the lower end of described upper piston and inner central tube set
The pressure transmission passage put is connected, and described lower overcoat is connected with the lower piston sitting mechanism for card by the second startup pin.
By technique scheme, described seat mechanism for card includes the lower exterior central tube being sleeved on outside inner central tube, outside lower exterior central tube
It is cased with lower piston, lower exterior central tube is again provided with the pressure transmission passage communicated with the pressure transmission passage arranged on inner central tube, institute
The upper end stating lower piston is connected with pressure transmission passage, and lower end is connected with slip mechanism.
By technique scheme, connect in the lower end of lower overcoat and have retaining mechanism, described retaining mechanism to include being connected with lower overcoat
Lock tube, the lock ring back-up ring being connected with lock tube, be provided with lock ring on described lock tube, and described lock ring is for setting on lower piston outer wall
The lock tooth interlocking put, described lock ring back-up ring is connected with lower piston by the second startup pin.
By technique scheme, described slip mechanism is sleeved on lower exterior central tube, and described slip mechanism includes upper cone, lower cone
Body, slip sleeve, slips, spring, lock nut, described upper cone is connected with lower piston, and two inner conical surfaces up and down of described slips are respectively
Matching with upper cone and lower cone, and correspondence installs slip sleeve, described lower cone is connected with lower exterior central tube, recessed in the middle part of slips
Spring is installed in groove.
By technique scheme, anticollision mechanism is included in the crashproof boss that lower cone lower end is arranged.
Acquired by this utility model have the beneficial effect that acquired by this utility model have the beneficial effect that 1, this utility model is adopted
Use and put forward the bilingual envelope mode of tubing string or dextrorotation tubing string and unseal, improve the solution sealing property of the Bidirectional anchor packer of bilingual envelope, carry
High practicality of the present utility model;2, during this utility model deblocking, inner central tube can expose fluid course, it is achieved pipe is inside and outside
Connection, reduces lift pipe string load;When proposing deblocking on 3, first by after packer sealing superstructure loosening, cone is up just to start by force
Row reclaims slips.This substep unfreezing mode ensures that the smooth and easy of deblocking is carried out.
Accompanying drawing explanation
Fig. 1 is structure chart of the present utility model.
Wherein: 1, top connection, 2, key, 3, deblocking pin, 4, upper overcoat, 5, central canal, 6,8,19,20,
21,22,23, O, 7, balancing plug, 9, glue tube base, 10, protection bowl, 11, end packing element, 12, outer center
Pipe, 13, spacer ring, 14, middle packing element, 15, start shear pin 1,16, draining set, 17, spring detent, 18, upper piston,
24, lower overcoat, 25, lower exterior central tube, 26, lower piston, 27, lock tube, 28, lock ring, 29, spacing shear pin, 30, open
Dynamic shear pin, 31, lock ring back-up ring, 32, upper cone, 33, slip sleeve, 34, slips, 35 springs, 36, spacing shear pin 2,
37, lower cone, 38, lower contact.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, present embodiments provide the Bidirectional anchor packer of a kind of bilingual envelope, including the top connection being sequentially connected
1, interior center 5, lower contact 38, is cased with packing element sealing mechanism, setting mechanism, seat card machine outside inner central tube 5 is outer successively
Structure, at the first solution sealing mechanism that is connected above of packing element sealing mechanism, described first solves sealing mechanism is connected with top connection, described glue
Cylinder sealing mechanism is connected with sitting mechanism for card by the second solution sealing mechanism.
Described first solves sealing mechanism includes the upper overcoat 4 being set in outside top connection 1, the balancing plug being connected with upper overcoat 4 lower end
7, the fluid course arranged on inner central tube 5, is connected by key 2 between described upper overcoat 4 and top connection 1, can transmit
Moment of torsion, both by deblocking pin 3 be fixed in top connection 1, described balancing plug 7 abuts against with top connection 1, and passes through
O 6 seals up the fluid course on inner central tube 5.
Described packing element sealing mechanism includes the upper exterior central tube 12 being set in outside inner central tube 5, overlaps successively at upper center tube outer 12
It is provided with glue tube base 9, protection bowl 10, end packing element 11, spacer ring 13, middle packing element 14, spacer ring, lower rubber cylinder, lower rubber cylinder seat,
Wherein the inner and outer wall of balancing plug 7 lower end is threadeded with upper exterior central tube 12 and upper glue tube base 9 respectively, connects in balance
Between 7 and upper exterior central tube 12, also it is installed on O 8.
Described setting mechanism includes that the draining set 16 and the draining that are connected by the first startup shear pin 15 with lower rubber cylinder seat are overlapped 16 times
The lower overcoat 24 that end is connected, abuts in the lower end of draining set 46 and has upper piston 18, the inner and outer wall of upper piston 18 to be provided with
O 19,20, the lower end of described upper piston 18 with on inner central tube 5 arrange pressure transmission passage be connected, wherein, lower outside
Set 24 is sleeved on outside the lower piston sitting mechanism for card, and described lower overcoat 24 is connected with retaining mechanism, and described retaining mechanism passes through second
Start pin 30 to be connected with lower piston 26.
Described seat mechanism for card includes the lower exterior central tube 25 being sleeved on outside inner central tube 5, is cased with lower work outside lower exterior central tube 25
Plug 24, is again provided with pressure transmission passage on lower exterior central tube 25, and this pressure transmission passage leads to the pressure transmission of setting on inner central tube 5
The corresponding setting in road, makes both connect, and the upper end of described lower piston 24 is connected with pressure transmission passage, lower end and slip mechanism phase
Even.Inside and outside wall at lower exterior central tube 25 is configured with O 22,23, be also configured with O in the inside and outside of lower piston 24
Type circle.
Described retaining mechanism includes the lock tube 27 being connected with lower overcoat 24, the lock ring back-up ring 31 being connected with lock tube 27, described
Being provided with lock ring 28 on lock tube 27, described lock ring 28 is for the lock tooth interlocking with setting on lower piston 24 outer wall, described lock ring
Back-up ring 31 is fixed on the lower end of lower piston 24 by the second startup pin 30.
Described slip mechanism is sleeved on lower exterior central tube 12, and described slip mechanism includes upper cone 32, lower cone 37, slips
Set 33, slips 34, spring 35, lock nut, described upper cone 32 is connected by screw thread with lower piston 26, described lower cone 37
Being connected with lower exterior central tube screw thread, two inner conical surfaces up and down of described slips 34 match with upper cone 32 and lower cone 37 respectively,
Uniform four slips 34 of slip sleeve 33, and make slips not strut by built-in spring 35, slips is also configured with spacing cutting
Nail 36.
Described second solves sealing mechanism includes that spring detent 17, spring detent 17 are arranged between inner central tube 5 and draining set 16, institute
The upper end stating spring detent 17 is outwardly dog, is provided with groove, on inner central tube in the lower end of upper exterior central tube 12
Corresponding dog is provided with boss, and the dog of spring detent 17 is locked in the groove of upper exterior central tube 12 by the boss of inner central tube,
The lower end of described spring detent 17 is connected by right-handed thread with lower exterior central tube 25.
Described anticollision mechanism is included in the crashproof boss that lower cone 37 lower end is arranged, due to lower cone 37 and lower exterior central tube 25
Screw thread is connected, and lower exterior central tube 25 is connected with upper exterior central tube 12 by spring detent 17, upper exterior central tube 12 and balancing plug
Screw thread is connected, and balancing plug 7 and top connection 1 abut against, and impulsive force suffered during going into the well is delivered to top connection 1 entirely
With on oil pipe, play crashproof effect.
During work, top connection 1 of the present utility model is connected with measure tubing string, time under tubing string to design attitude, squeezes into liquid from well head
Body, fluid pressure acts on upper piston by the reception and registration pressure passageway of down-hole string and instrument inner central tube 5 and lower exterior central tube 25
18 and lower piston 26 on, upper piston 18 is up, and lower piston 26 is descending simultaneously, and lower piston 26 descending promotion upper cone 32 is cut
Disconnected second startup shear pin 30, owing to the second startup shear pin 30 is continued up by shear pin, draining set with lower overcoat, shear pin first
Startup shear pin 15, glue tube base 9 up compression packing element 11,14 in promotion, after the descending cone of lower piston 26 opens slips 34 simultaneously,
Lock with lock ring 28, complete to set card.
When needs unseal, above carrying measure tubing string, band power driven tools top connection 1 and inner central tube 5 are up, cut off deblocking pin 3
After, inner central tube 5 and balancing plug 7 lose sealing, expose fluid course, make the intrinsic pressure connection of pipe, reduce and take out load, with
Time due to inner central tube 5 up, spring detent 17 loses the support of inner central tube 5, and packing element sealing mechanism divides with sitting mechanism for card
From, progressively unseal, trip out tubing string.When the deblocking of upper lifting pipe post was lost efficacy, dextrorotation top connection 1 and inner central tube 5, top connection 1
Spring detent 17 is transferred a torque to by inner central tube 5, owing to spring detent 17 is spun by right-handed thread with lower exterior central tube,
Spring detent 17 disengages with lower exterior central tube 25 so that packing element sealing mechanism with sit mechanism for card separate, then on propose deblocking.