CN204436321U - A kind of sand setting flushing packer - Google Patents
A kind of sand setting flushing packer Download PDFInfo
- Publication number
- CN204436321U CN204436321U CN201520098444.3U CN201520098444U CN204436321U CN 204436321 U CN204436321 U CN 204436321U CN 201520098444 U CN201520098444 U CN 201520098444U CN 204436321 U CN204436321 U CN 204436321U
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- China
- Prior art keywords
- flushing
- well
- tube
- lock
- piston rod
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Abstract
The utility model discloses a kind of sand setting flushing packer, comprise central tube, tube channel, packing element, described tube channel empty set is outside central tube, packing element is tightly placed in tube channel, passage annular space is formed between tube channel and central tube, described tube channel is divided into the one-level tube channel be temporarily fixed together by deblocking shear pin, secondary passage pipe, described one-level tube channel to be connected to above secondary passage pipe and through hole one-level tube channel offered towards passage annular space, described packing element is enclosed within secondary passage pipe, bottom described secondary passage pipe, well-flushing piston rod is set, well-flushing piston is set in well-flushing piston rod, described central tube is offered towards the through hole in well-flushing piston rod, described passage annular space is communicated in well-flushing piston rod.The utility model solves long-term water conservancy erosion and causes the packing less problem of well-flushing piston; Solve the water filling that well-flushing piston seal failure causes and alter a layer problem; Solve the obstructed problem of well-flushing that sand buries well-flushing feeder connection, the reason of well-flushing passage causes.
Description
Technical field
The utility model relates to downhole packer, specifically a kind of sand setting flushing packer.
Background technology
Meticulous seperated layer water injection, for good ground energy, improves recovery ratio particularly important.Require water injection well packer, not only will possess stable vertical resolution, and well-flushing function will be had so that the dirt rinsed in long-term injecting water process and impurity.Although well-flushing pressure is general not high, the narrow and small area of oil jacket annular space but makes current speedup, and the erosion effect of high-velocity flow becomes the main cause destroying existing well-flushing piston structure; Water injection well is during stopping note, and stratum is counter tells that carrying shakes out and cause the blocking of existing flushing packer well-flushing passage, and the obstructed situation of well-flushing happens occasionally.In order to accurate layering adopt water steadily in the long term, reduce difficulty and the cost of safeguarding well, the functional requirement of well well-flushing strengthens.Mainly should deal with problems from two aspects: 1. improve existing well-flushing piston structure, ensure the working life of well-flushing piston element; 2. overcome sand and bury the problem that well-flushing feeder connection causes well-flushing obstructed.
Utility model content
The purpose of this utility model is to provide a kind of sand setting flushing packer, solves long-term water conservancy erosion and causes the packing less problem of well-flushing piston; Add the well-flushing arrangement works life-span, then solve the water filling that well-flushing piston seal failure causes and alter a layer problem; Solve the obstructed problem of well-flushing that sand buries well-flushing feeder connection, the reason of well-flushing passage causes; Repeatedly need not set and deblocking in water filling and well-flushing alternation procedure, be conducive to the packing element life-span.
In order to reach above-mentioned purpose, the utility model have employed following technical scheme, a kind of sand setting flushing packer, comprise central tube, tube channel, packing element, described tube channel empty set is outside central tube, packing element is tightly placed in tube channel, passage annular space is formed between tube channel and central tube, described tube channel is divided into the one-level tube channel be temporarily fixed together by deblocking shear pin, secondary passage pipe, described one-level tube channel to be connected to above secondary passage pipe and through hole one-level tube channel offered towards passage annular space, described packing element is enclosed within secondary passage pipe, bottom described secondary passage pipe, well-flushing piston rod is set, well-flushing piston is set in well-flushing piston rod, described central tube is offered towards the through hole in well-flushing piston rod, described passage annular space is communicated in well-flushing piston rod.
Described packing element bottom connect successively set top cylinder, set piston, describedly set piston inwall and central tube outer wall seals, central tube lower end connects lower contact, set piston outer wall then to connect and set piston tail part cover, the described piston tail part cover that sets is by setting shear pin and lower contact is temporarily fixed, inner groove is offered in described lower contact upper end, and on central tube, offer the through hole towards this inner groove, and the bottom face setting piston faces inner groove and inner groove directly as the plunger shaft setting piston.
Described well-flushing piston rod bottom arranges lock tube, lock tube is arranged the lock dog of protrusion, and lock dog and outside lock dog cap are connected, and lock dog cap upper end is then connected with well-flushing piston rod.
Described setting inside piston upper end is provided with lock ring, lock ring is enclosed within the outside of lock tube, described lock tube outer wall offers unidirectional buttless thread, lock ring inwall also offers unidirectional buttless thread, lock ring can only move along in lock tube by under the drive setting piston, described setting on the cylinder of top offers through hole towards lock tube peripheral space, described in set through hole top cylinder also offered towards well-flushing piston rod peripheral space.
Described secondary passage pipe upper end connects sand control ring, and described sand control ring is spacing to be determined journey slidingtype and be connected to one-level tube channel outer wall.
Connect well-flushing piston rod by channel seat bottom described secondary passage pipe, glue ring is set between channel seat and well-flushing piston rod.
Described one-level tube channel is connected top connection with central tube upper end simultaneously, and packing element bottom is pushed up cylinder be connected by being set apical ring with setting.
Compared to prior art, the utility model has following beneficial effect:
Oil pipe is connected with packer body by the internal thread of top connection; Top connection is connected by the external screw thread of internal thread with central tube top, be connected by the internal thread of external screw thread with one-level tube channel, wherein one-level tube channel top has well-flushing feeder connection in advance, and central tube bottom has in advance and sets pressure transmission water hole and well-flushing balance water hole; Secondary passage pipe box is contained in one-level tube channel, and is connected by the external screw thread of internal thread with sand control ring bottom; Deblocking shear pin tightens at one-level tube channel and secondary passage tube hole groove correspondence position; Sand control ring top is reserved with external screw thread, can external sand control pipe nipple, forms bay wall, raise well-flushing feeder connection with oil-pipe external wall, and pipe is outer simultaneously serves sand settling function;
Packing element, spacer ring, set apical ring and be sleeved on the corresponding outer radius of secondary passage pipe successively; Channel seat is connected by the external screw thread of internal thread with secondary passage pipe; Glue ring set is contained in channel seat respective outer diameters place; Well-flushing piston bush is contained in the corresponding outer radius of central tube; Well-flushing piston rod has well-flushing channel outlet in advance, be connected with the external screw thread of channel seat by internal thread, play the effect of compacting glue ring, ensure inside and outside, upper surface and the metal sealing of glue ring, and soffit is vertical with well-flushing water flow path direction, current component velocity is zero, avoids the destruction of hydraulic erosion to sealing surface, thus constitutes modified well-flushing piston sealing structure;
Lock tube is sleeved in the middle of central tube and well-flushing piston rod two pipe, and lock dog is installed to lock tube and reserves in lock dog installing hole; Lock dog cap is connected to encapsulate lock tube and lock dog by internal thread with the external screw thread of well-flushing piston rod, ensure that set the downward screen resilience of rear packing element by setting apical ring, set top cylinder, set piston, lock ring, lock tube, lock dog, lock dog cap, well-flushing piston rod, channel seat be delivered on secondary passage pipe, plays balanced action with the packing element screen resilience acted on secondary passage pipe upwards;
Set top cylinder to be connected with the external screw thread setting apical ring by internal thread, set top cylinder and have well-flushing channel outlet in advance; Lock ring internal thread screws in the externally threaded relevant position of lock tube, and two pieces is all unidirectional saw-tooth thread, plays the effect of one-way movement locking;
Set piston by internal thread with set the external screw thread pushing up cylinder and be connected; Lower contact is connected with central tube lower external thread by internal thread; Set piston tail part cover to be connected with the external screw thread setting piston by internal thread; Set shear pin tighten set piston tail part cover and lower contact two pieces align after shear pin box hole in; When oil pipe builds the pressure set packer, central tube sets pressure transmission water hole and plays pressure transmission effect, thus promote to set piston, set piston tail part cover, set top cylinder, to set apical ring up, piston force is cut off and is set shear pin; All sealing rings are "O"-ring, and are arranged in corresponding " O " ring recess.
The utility model: 1. solve long-term water conservancy erosion and cause the packing less problem of well-flushing piston; Add the well-flushing arrangement works life-span, then solve the water filling that well-flushing piston seal failure causes and alter a layer problem; 2. raise the sand settling function outside well-flushing feeder connection, pipe, ensure that the unimpeded of packer well-washing passage, solve the obstructed problem of well-flushing that sand buries well-flushing feeder connection, the reason of well-flushing passage causes; 3. there is well-flushing passage in this sand setting flushing packer, repeatedly need not set and deblocking, be conducive to the packing element life-span in water filling and well-flushing alternation procedure.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of sand setting flushing packer of the present utility model.
In figure, 1-top connection, 2-sealing ring, 3-central tube, 4-one-level tube channel, 5-secondary passage pipe, 6-packing element, 7-spacer ring, 8-set apical ring, 9-sealing ring, 10-channel seat, 11-sand control ring, 12-deblocking shear pin, 13-glue ring, 14-well-flushing piston, 15-sealing ring, 16-well-flushing piston rod, 17-sealing ring, 18-lock tube, 19-lock dog, 20-lock dog cap, 21-set top cylinder, 22-lock ring, 23-set piston, 24-sealing ring, 25-sealing ring, 26-lower contact, 27-set piston tail part cover, 28-sets shear pin.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
According to Fig. 1, a kind of sand setting flushing packer, comprise central tube 3, tube channel, packing element 6, described tube channel empty set is outside central tube, packing element is tightly placed in tube channel, passage annular space is formed between tube channel and central tube, described tube channel is divided into the one-level tube channel 4 be temporarily fixed together by deblocking shear pin 12, secondary passage pipe 5, described one-level tube channel to be connected to above secondary passage pipe and through hole one-level tube channel offered towards passage annular space, described packing element is enclosed within secondary passage pipe, bottom described secondary passage pipe, well-flushing piston rod 16 is set, well-flushing piston 14 is set in well-flushing piston rod, described central tube is offered towards the through hole in well-flushing piston rod, described passage annular space is communicated in well-flushing piston rod.Described secondary passage pipe upper end connects sand control ring 11, and described sand control ring is spacing to be determined journey slidingtype and be connected to one-level tube channel outer wall.
Packing element bottom connect successively set top cylinder 21, set piston 23, describedly set piston inwall and central tube outer wall seals, central tube lower end connects lower contact 26, set piston outer wall then connect set piston tail part cover 27, the described piston tail part cover that sets temporarily is fixed with lower contact by setting shear pin 28, inner groove is offered in described lower contact upper end, and the through hole offered on central tube towards this inner groove, the bottom face setting piston faces inner groove and inner groove directly as the plunger shaft setting piston.Described well-flushing piston rod bottom arranges lock tube 18, lock tube is arranged the lock dog 19 of protrusion, and lock dog and outside lock dog cap 20 are connected, and lock dog cap upper end is then connected with well-flushing piston rod.Described setting inside piston upper end is provided with lock ring 22, lock ring is enclosed within the outside of lock tube, described lock tube outer wall offers unidirectional buttless thread, lock ring inwall also offers unidirectional buttless thread, lock ring can only by under the drive setting piston in lock tube on move, described setting on the cylinder of top offers through hole towards lock tube peripheral space, described in set through hole top cylinder also offered towards well-flushing piston rod.Connect well-flushing piston rod by channel seat bottom described secondary passage pipe, glue ring 13 is set between channel seat and well-flushing piston rod.Described one-level tube channel is connected top connection 1 with central tube upper end simultaneously, and packing element bottom is pushed up cylinder be connected by being set apical ring 8 with setting.
Oil pipe is connected with packer body by the TBG screw thread of top connection 1; Top connection 1 is connected by the external screw thread of internal thread with central tube 3 top, is connected by the internal thread of external screw thread with one-level tube channel 4, and wherein one-level tube channel 4 top has well-flushing feeder connection in advance, and central tube 3 bottom has in advance and sets pressure transmission water hole; Secondary passage pipe 5 is sleeved in one-level tube channel 4, and is connected by the external screw thread of internal thread with sand control ring 11, and is tightened by deblocking shear pin 12 at one-level tube channel 4 and secondary passage pipe 5 hole slot correspondence position; Packing element 6, spacer ring 7, set apical ring 8 and be sleeved on the corresponding outer radius of secondary passage pipe 5 successively; Channel seat 10 is connected by the external screw thread of internal thread with secondary passage pipe 5; Glue ring 13 is sleeved on channel seat 10 respective outer diameters place; Well-flushing piston 14 is sleeved on the corresponding outer radius of central tube 3; Well-flushing piston rod 16 is connected by the external screw thread of internal thread with channel seat 10, and well-flushing piston rod 16 has well-flushing channel outlet in advance; Lock tube 18 is sleeved in the middle of central tube 3 and well-flushing piston rod 16 liang of pipes, and lock dog 19 is installed to lock tube 18 and reserves in lock dog installing hole; Lock dog cap 20 is connected to encapsulate lock tube 18 and lock dog 19 by internal thread with the external screw thread of well-flushing piston rod 16; Set top cylinder 21 to be connected with the external screw thread setting apical ring 8 by internal thread, set top cylinder 21 and have well-flushing channel outlet in advance; Lock ring 22 internal thread screws in the externally threaded relevant position of lock tube 18; Set piston 23 by internal thread with set the external screw thread pushing up cylinder 21 and be connected; Lower contact 26 is connected with central tube 3 lower external thread by internal thread; Set piston tail part cover 27 to be connected with the external screw thread setting piston 23 by internal thread; Set piston tail part cover 27 to be connected by setting shear pin 28 with lower contact 26; All sealing rings are all arranged on relevant position according in accompanying drawing 1.
Water injection string meets design requirement, and oil pipe builds the pressure set packer.Central tube 3 sets the pressure transmission of pressure transmission water hole, promotes to set piston 23 up; Set piston tail part to overlap 27 up cutting off and set shear pin 28; Set apical ring 8 and set and push up the up compression packing element 6 of cylinder 21; Lock ring 22 is up to be self-locking on the unidirectional screw thread of lock tube 18, prevents packing element resilience; Set the top well-flushing channel outlet that has in advance of cylinder 21 and go upward to precalculated position, set complete.Upper lifting pipe post masterpiece is used on deblocking shear pin 12, the frictional force setting packing element and sleeve pipe provides reaction force, deblocking shear pin 12 is cut off, now secondary passage pipe 5, sand control ring 11, lock tube 18, lock dog 19, lock ring 22, set piston 23, set piston tail part cover and 27 to fall after rise to lower contact 26 simultaneously, reach deblocking object.
Because this type packer adopts the technique of modified well-flushing piston structure, sand control ring top overcoat sand control pipe nipple, according to detailed description of the invention operation, solve Problems existing in technical background.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (7)
1. a sand setting flushing packer, comprise central tube, tube channel, packing element, described tube channel empty set is outside central tube, packing element is tightly placed in tube channel, passage annular space is formed between tube channel and central tube, it is characterized in that, described tube channel is divided into the one-level tube channel be temporarily fixed together by deblocking shear pin, secondary passage pipe, described one-level tube channel to be connected to above secondary passage pipe and through hole one-level tube channel offered towards passage annular space, described packing element is enclosed within secondary passage pipe, bottom described secondary passage pipe, well-flushing piston rod is set, well-flushing piston is set in well-flushing piston rod, described central tube is offered towards the through hole in well-flushing piston rod, described passage annular space is communicated in well-flushing piston rod.
2. a kind of sand setting flushing packer according to claim 1, it is characterized in that, described packing element bottom connects successively and sets top cylinder, set piston, describedly set piston inwall and central tube outer wall seals, central tube lower end connects lower contact, set piston outer wall then to connect and set piston tail part cover, the described piston tail part cover that sets is by setting shear pin and lower contact is temporarily fixed, inner groove is offered in described lower contact upper end, and the through hole offered on central tube towards this inner groove, the bottom face setting piston faces inner groove and inner groove directly as the plunger shaft setting piston.
3. a kind of sand setting flushing packer according to claim 2, is characterized in that, described well-flushing piston rod bottom arranges lock tube, lock tube is arranged the lock dog of protrusion, and lock dog and outside lock dog cap are connected, and lock dog cap upper end is then connected with well-flushing piston rod.
4. a kind of sand setting flushing packer according to claim 3, it is characterized in that, described setting inside piston upper end is provided with lock ring, lock ring is enclosed within the outside of lock tube, described lock tube outer wall offers unidirectional buttless thread, and lock ring inwall also offers unidirectional buttless thread, and lock ring can only move along in lock tube by under the drive setting piston, described setting on the cylinder of top offers through hole towards lock tube peripheral space, described in set through hole top cylinder also offered towards well-flushing piston rod.
5. a kind of sand setting flushing packer according to claim 1, is characterized in that, described secondary passage pipe upper end connects sand control ring, and described sand control ring is spacing to be determined journey slidingtype and be connected to one-level tube channel outer wall.
6. a kind of sand setting flushing packer according to claim 1, is characterized in that, connects well-flushing piston rod, arrange glue ring between channel seat and well-flushing piston rod bottom described secondary passage pipe by channel seat.
7. a kind of sand setting flushing packer according to claim 1, is characterized in that, described one-level tube channel is connected top connection with central tube upper end simultaneously, and packing element bottom is pushed up cylinder be connected by being set apical ring with setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520098444.3U CN204436321U (en) | 2015-02-11 | 2015-02-11 | A kind of sand setting flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520098444.3U CN204436321U (en) | 2015-02-11 | 2015-02-11 | A kind of sand setting flushing packer |
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| Publication Number | Publication Date |
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| CN204436321U true CN204436321U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520098444.3U Expired - Fee Related CN204436321U (en) | 2015-02-11 | 2015-02-11 | A kind of sand setting flushing packer |
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| Country | Link |
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| CN (1) | CN204436321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412389A (en) * | 2020-12-08 | 2021-02-26 | 大庆市璞庆钻采设备制造有限公司 | Fully-closed large-displacement packer capable of preventing foreign matter from blocking immovable pipe column for multi-layer fracturing |
-
2015
- 2015-02-11 CN CN201520098444.3U patent/CN204436321U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412389A (en) * | 2020-12-08 | 2021-02-26 | 大庆市璞庆钻采设备制造有限公司 | Fully-closed large-displacement packer capable of preventing foreign matter from blocking immovable pipe column for multi-layer fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20200211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |