CN104929563B - Water injection packer - Google Patents
Water injection packer Download PDFInfo
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- CN104929563B CN104929563B CN201510275998.0A CN201510275998A CN104929563B CN 104929563 B CN104929563 B CN 104929563B CN 201510275998 A CN201510275998 A CN 201510275998A CN 104929563 B CN104929563 B CN 104929563B
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- central tube
- hole
- piston
- backwash
- outside
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 74
- 238000007789 sealing Methods 0.000 claims description 41
- 238000012856 packing Methods 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 10
- 210000003739 neck Anatomy 0.000 claims 1
- 238000011001 backwashing Methods 0.000 abstract 8
- 230000000694 effects Effects 0.000 description 8
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a water injection packer, which comprises a central pipe, wherein an upper outer central pipe and a lower outer central pipe are sleeved outside the central pipe, a first backwashing channel is formed between the upper outer central pipe and the central pipe, a second backwashing channel is formed between the lower outer central pipe and the central pipe, and an internal test hole and a first pressurizing hole are also formed in the central pipe; the upper outer cylinder is sleeved outside the central pipe, the bottom of the upper outer cylinder is abutted to the first setting component, and a first circulating hole is formed in the upper outer cylinder and communicated with the first backwashing channel; the backwashing piston is sleeved on the outer side of the central pipe, and the upper end of the backwashing piston is abutted to the second setting component; the inner cylinder sleeve is arranged below the backwashing piston, and the upper end of the inner cylinder sleeve is abutted to the lower end of the central pipe; and the upper outer cylinder sleeve is sleeved on the backwashing piston and the outer side of the inner cylinder sleeve, and is provided with a second circulation hole. The water injection packer can solve the technical problem that the existing water injection packer is ineffective in backwashing.
Description
Technical field
The present invention relates to field of petroleum exploitation, especially, it is related to a kind of water injection packer.
Background technology
At present, in oil extraction process, for supplement stratum energy, balanced flood is reached, and water filling is carried out to production zone,
The conventional packer of water injection technology, though species is many at present, Y341 packers are to apply relatively extensive a kind of, when using
There is problem and have in Y341 packers：1, backwash failure；2, ground is set flexibly, and packer fails when entering water filling after well；3, deblocking
Load is big, and changing tubing string can not unseal sometimes；4, water filling layer position series is restricted, and can be only done below Pyatyi；5, after setting,
The problems such as packer secondary can not be set.
The content of the invention
Present invention aims at a kind of water injection packer is provided, to solve the above-mentioned technical problem of existing water injection packer.
The above-mentioned purpose of the present invention can be realized using following technical proposal：
The present invention provides a kind of water injection packer, including central tube, and its outer cover is provided with upper exterior central tube and Xia Wai centers
Pipe, is formed with the first backwash passage between upper exterior central tube and central tube, lower that second is formed between exterior central tube and central tube
Sealing of hole and the first pressurization hole are tested in being additionally provided with backwash passage, central tube；First is arranged with outside upper exterior central tube and sets component,
Second, which is arranged with, outside lower exterior central tube sets component；Upper outer barrel, it is set on the outside of central tube, and the bottom of upper outer barrel is sat with first
Sealing assembly is abutted against, and first circulation hole is provided with upper outer barrel, and first circulation hole is connected with the first backwash passage；It is total from envelope is tested
Into, its be slideably set in central tube in test on the outside of sealing of hole, from test the top of envelope assembly respectively with upper exterior central tube and the
One, which sets component, abuts against, and the bottom that envelope assembly is tested certainly sets component with lower exterior central tube and second respectively and abutted against, and envelope is tested certainly
Be provided with assembly connection the first backwash passage and the second backwash passage the 3rd backwash passage, it is described from test envelope assembly on setting
Have can with it is described it is interior test that sealing of hole connects test sealing of hole；Backwash piston, it is set on the outside of central tube；Inner cylinder liner, it is arranged on instead
The lower section of piston is washed, the upper end of inner cylinder liner is abutted with central tube lower end；Upper outer cylinder sheath, it is set in outside backwash piston and inner cylinder liner
Second circulation hole is provided with side, upper outer cylinder sheath, the plunger shaft of backwash piston is formed between central tube and upper outer cylinder sheath, first adds
Pressure hole is connected with the plunger shaft of backwash piston；Many set self-locking mechanisms, cover the circumferentially spaced setting of the self-locking mechanism more
In the outside of the central tube, the self-locking mechanism includes closing piece, block teeth and from lock tube, it is described be folded in from lock tube it is described outer
Between cylinder and the central tube, the closing piece is sticked on the outer wall of the central tube, and the block teeth are arranged on described from lock tube
Upper end and the closing piece between, the block teeth are slideably connected with the closing piece, and the block teeth are away from the central tube
Side is provided with the multiple cards for being provided with and coordinating with multiple card tooth self-lockings on multiple card teeth, the inwall from lock tube vertically
Groove；Ring groove is provided with the central tube, the closing piece is arranged on the ring groove upper end.
Further, water injection packer also includes lower piston, and it, which is set on the outside of inner cylinder liner, inner cylinder liner, is provided with drive
Second pressurization hole of dynamic lower piston；Lower outer cylinder sheath, it is set in the outside of lower piston, and lower piston passes through lower outer cylinder sheath and upper outer shell
The lower end of set is abutted against；Lower contact, it is connected to the lower end of inner cylinder liner, and upper end and the lower piston of lower contact are abutted against.
Further, water injection packer is also included from envelope outer barrel is tested, and it is slideably set in from testing outside envelope assembly, is tested certainly
The top of envelope outer barrel sets component with first and abutted against, and its bottom sets component with second and abutted against, and is set from testing on envelope outer barrel
Sealing of hole is tested outside having.
Further, set component and second first to set in the state of component sets, test sealing of hole and test envelope with interior respectively
Hole is tested sealing of hole and is connected with outer.
Further, the side that envelope assembly towards central tube are tested certainly offers inner groovy, and envelope assembly direction is tested certainly and tests envelope certainly
The side of outer barrel offers external groove, and inner groovy is connected with testing sealing of hole respectively with external groove.
Further, first set component and include from top to bottom being set in the first upper press ring on the outside of exterior central tube, the
Packing element, the first packing ring, the first lower rubber cylinder and first time pressure ring on one；The upper end of first upper press ring and the lower end of upper outer barrel offset
Connect, the lower end of first time pressure ring with from test envelope assembly and certainly test envelope outer barrel upper end abut against.
Further, second set component and include from top to bottom being set in the second upper press ring on the outside of lower exterior central tube, the
Packing element, the lower rubber cylinder of second packing ring second and second time pressure ring on two；The upper end of second upper press ring and the lower end phase for testing envelope outer barrel certainly
Abut, the lower end and the upper end of backwash piston and upper outer cylinder sheath of second time pressure ring are abutted against.
Further, lower contact outer sheath is provided with trembleuse cup, and trembleuse cup is connected with the lower end of lower outer cylinder sheath.
The features of the present invention and advantage are：
Backwash operation is simple, and success rate is high, it is easy to operation and grasp, backwash effect is good, it is to avoid the generation of backwash failure,
Reduce the unnecessary loss caused by backwash is failed.
It can carry out testing envelope certainly, it is to avoid the loss that packer failure is caused；Can be repeated several times it is setting, so as to ensure that packer has
Effect is setting；Unseal load small, can disposably complete less than 10 grades of seperated layer water injection construction technology measure.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic diagram of the water injection packer of the present invention；
Fig. 2 is enlarged diagram at Fig. 1 A；And
Fig. 3 is enlarged diagram at Fig. 1 B.
Reference in accompanying drawing is as follows：10th, central tube；101st, it is interior to test sealing of hole；102nd, the first pressurization hole；103rd, ring is recessed
Groove；11st, upper exterior central tube；111st, the first upper press ring；112nd, packing element on first；113rd, the first packing ring；114th, the first lower rubber cylinder；
115th, first time pressure ring；121st, the second upper press ring；122nd, packing element on second；123rd, second packing ring；124th, the second lower rubber cylinder；125、
Second time pressure ring；12nd, lower exterior central tube；13rd, the first backwash passage；14th, the second backwash passage；15th, upper outer barrel；151st, first follow
Annular distance；16th, envelope assembly is tested certainly；161st, sealing of hole is tested；162nd, inner groovy；163rd, external groove；17th, envelope outer barrel is tested certainly；171st, envelope is tested outside
Hole；18th, backwash piston；19th, inner cylinder liner；191st, the second pressurization hole；20th, upper outer cylinder sheath；201st, second circulation hole；21st, lower piston；
22nd, lower outer cylinder sheath；231st, closing piece；232nd, block teeth；2321st, card tooth；233rd, from lock tube；2331st, neck；234th, from lock assembly；
2341st, breach；24th, top connection；25th, lower contact；26th, trembleuse cup；27th, cushion space.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1 to Figure 3, the present invention provides a kind of water injection packer, including central tube 10, and its outer cover is provided with upper outer
Central tube 11 and lower exterior central tube 12, are formed with the first backwash passage 13 between upper exterior central tube 11 and central tube 10, it is lower it is outer in
It is formed between heart pipe 12 and central tube 10 on second backwash passage 14, central tube 10 in being additionally provided with and tests sealing of hole 101 and first
Pressurization hole 102；First is arranged with outside upper exterior central tube 11 and sets component, be arranged with second sets component to lower exterior central tube 12 outside；
Upper outer barrel 15, it is set in the outside of central tube 10, and the bottom of upper outer barrel 15 sets component with first and abutted against, set on upper outer barrel 15
First circulation hole 151 is equipped with, first circulation hole 151 is connected with the first backwash passage 13；From envelope assembly 16 is tested, it is slideably
It is set in the interior of central tube 10 and tests the outside of sealing of hole 101, is sat respectively with upper exterior central tube 11 and first from the top for testing envelope assembly 16
Sealing assembly is abutted against, and the bottom that envelope assembly 16 is tested certainly sets component with lower exterior central tube 12 and second respectively and abutted against, and envelope is tested certainly
The 3rd backwash passage of the first backwash passage 13 of connection and the second backwash passage 14 is provided with assembly 16；Backwash piston 18, its
It is set in the outside of central tube 10；Inner cylinder liner 19, it is arranged on the lower section of backwash piston 18, upper end and the central tube 10 of inner cylinder liner 19
Lower end is abutted；Upper outer cylinder sheath 20, it is set on the outside of backwash piston 18 and inner cylinder liner 19, and being provided with second on upper outer cylinder sheath 20 follows
Annular distance 201, forms the plunger shaft of backwash piston 18 between central tube 10 and upper outer cylinder sheath 20, the first pressurization hole 102 is lived with backwash
The plunger shaft of plug 18 is connected.
Specifically, the top of central tube 10 is connected with top connection 24, and the bottom outside of top connection 24 offsets with the upper upper end of outer barrel 15
Connect；The outside of central tube 10 is circumferentially spaced to be provided with many set self-locking mechanisms, and self-locking mechanism includes closing piece 231, block teeth 232
With from lock tube 233, self-locking mechanism is folded between outer barrel 15 and central tube 10, wherein, self-locking mechanism also has from lock assembly
234, it is connected from the upper end of lock assembly 234 with the lower end of top connection 24, is slideably enclosed on from lock assembly 234 from lock tube 233
Outside, closing piece 231 and block teeth 232 are arranged on from the breach 2341 of lock assembly 234, and closing piece 231 and block teeth 232 are mounted slidably
From in lock assembly 234, block teeth 232 are arranged on between the upper end of lock tube 233 and closing piece 231, and block teeth 232 are away from central tube 10
Side vertically be provided with multiple card teeth 2321, from the inwall of lock tube 233 set with multiple self-lockings of card tooth 2321 coordinate it is many
Individual neck 2331, card tooth 2321 and neck 2331 are zigzag.Ring groove 103 is provided with central tube 10, closing piece 231 is located at
The upper end of ring groove 103.It is connected from the bottom of lock tube 233 with the upper end of upper exterior central tube 11.It is provided with from testing outside envelope assembly 16
From test envelope outer barrel 17, from test envelope outer barrel 17 be slideably set in from test envelope assembly 16 on, from test envelope outer barrel 17 on be provided with outside
Test sealing of hole 171.Sealing of hole 161 is tested from testing to be provided with envelope assembly 16；Component and second is set first to set before component do not set,
It is outer test sealing of hole 171 and test sealing of hole 161 stagger setting；Component and second is set first to set in the state of component sets, and tests envelope
Hole 161 is connected with testing sealing of hole 101 in central tube 10 and testing sealing of hole 171 outside respectively, in this case, can set group to first
Part and second sets component and carried out from testing envelope.In the present embodiment, first set component include from top to bottom be set in it is outer in
Packing element 112, the first packing ring 113, the first lower rubber cylinder 114 and first time pressure ring on first upper press ring 111, first in the outside of heart pipe 11
115；The upper end of first upper press ring 111 and the lower end of upper outer barrel 15 are abutted against, and the lower end of first time pressure ring 115 respectively with testing envelope certainly
The upper end of assembly 16 and test certainly envelope outer barrel 17 upper end abut against；Second, which sets component, includes from top to bottom being set in Xia Wai centers
Packing element 122, second packing ring 123, the second lower rubber cylinder 124 and second time pressure ring on second upper press ring 121, second in the outside of pipe 12
125；The upper end of second upper press ring 121 from the lower end for testing envelope outer barrel 17 with abutting against, and the second upper press ring 121 with testing envelope assembly 16 certainly
Between be provided with cushion space 27, the lower end of second time pressure ring 125 and the upper end of upper outer cylinder sheath 20 are abutted against.Backwash piston 18 is pacified
Between upper outer cylinder sheath 20 and central tube 10；The top of inner cylinder liner 19 is connected with the bottom of central tube 10.The bottom of inner cylinder liner 19
Lower contact 25 is connected with, water injection packer connects bottom tubing string by lower contact 25；The outside of lower contact 25 is also arranged with lower outer shell
Set 22 and trembleuse cup 26, the upper end of lower outer cylinder sheath 22 and the lower end of upper outer cylinder sheath 20 are abutted against, and the lower end of lower outer cylinder sheath 22 is with preventing
Shake ring 26 is connected by pin, prevents that solution is honored as a queen jarring.
Further, effect preferably is set in order to reach, is also arranged with down between inner cylinder liner 19 and lower outer cylinder sheath 22
The second pressurization hole 191 of driving lower piston 21 is provided with piston 21, inner cylinder liner 19；The upper end of lower piston 21 passes through lower outer cylinder sheath
22 abut against with the lower end of upper outer cylinder sheath 20；The lower end of lower piston 21 and the upper end of lower contact 25 are abutted against.Suppress when setting, under
Piston 21 and backwash piston 18 set component to second simultaneously and are compressed, and then compression first sets component, reach preferably
Set effect.
Further, the side that envelope assembly 16 towards central tube 10 are tested certainly offers inner groovy 162, and envelope assembly 16 is tested certainly
External groove 163 is offered towards from the side for testing envelope outer barrel 17, inner groovy 162 is with external groove 163 respectively with testing the two of sealing of hole 161
End is connected, and can ensure to test sealing of hole 161 when testing envelope certainly in certain motion process and test sealing of hole 101 with interior simultaneously and test envelope outside
Hole 171 is connected, and preferably completes to test envelope certainly.
As shown in figures 1 and 3, water injection packer of the invention can complete to test envelope certainly during water filling is set.By water filling
Packer tripping in sleeve pipe (in tripping in sleeve pipe and sets some position in sleeve pipe not shown in figure, when water injection packer works
Carry out water injection work) in, into central tube 10, water filling is suppressed first, and after the internal water flooding of central tube 10, water enters under pressure
Enter the first pressurization hole 102 and second pressurization hole 191 of the bottom of central tube 10, enter central tube 10 and upper from the first pressurization hole 102
Water under high pressure between outer cylinder sheath 20 promotes backwash piston 18 up, enters inner cylinder liner 19 and lower piston 21 from the second pressurization hole 191
Between water under high pressure promote lower piston 21 it is up, backwash piston 18 it is up promote second time pressure ring 125 it is up, lower piston 21 is up
Outer cylinder sheath 20 is up in promotion, and then promotes second time pressure ring 125 up, and compression second sets component, when the second upper press ring 121
Promote from test an envelope outer barrel 17 up segment distance (i.e. the cushion space 27 that the second upper press ring 121 and testing certainly is sealed between assembly 16
Distance) after make it is outer test sealing of hole 171 and be connected with external groove 163, test sealing of hole 171 with testing the purpose that sealing of hole 161 is connected outside to reach,
Now, envelope assembly 16 is tested certainly and to test envelope outer barrel 17 certainly simultaneously up, is tested sealing of hole 101 with interior when testing sealing of hole 161 and is tested sealing of hole 171 outside
Connect simultaneously after, the internal liquid of central tube 10, which advances to first and sets component and second, sets component and annular space (in figure
Not shown, annular space refers to the space between water injection packer outer wall and internal surface of sleeve pipe) between in the closed chamber that is formed, to
One, which sets component and second, sets as component two-stage sealing and carries out from testing envelope, voltage stabilizing 10 minutes, and the pressure suppressed does not drop i.e.
Complete to test envelope certainly.If first, which sets component, sets not tight, the annular sky that internal liquid will be between sleeve pipe and water injection packer
Between return to outside well, pressure decline, expression set it is not tight；Set not sternly if second sets component, the pressure for suppressing liquid has
Intermittent to decline, expression sets not tight.The water injection packer of the present invention is simple in construction, sets flexibility and reliability, when setting completion
Afterwards, certainly test envelope start working, if drainage occur or suppress pressure intermittence fluctuation, it was demonstrated that first set component or
Second, which sets component, sets on casing coupling, and it is bad to set effect, now above proposes water injection packer deblocking, finds next sit
Envelope stuck point is set.
As depicted in figs. 1 and 2, self-locking effect is good when water injection packer of the invention is set, after water filling is suppressed, water under high pressure
Backwash piston 18 and the up compression first of lower piston 21 is promoted to set component and second and set component and set, now from testing envelope assembly
16 promote upper exterior central tube 11 up, and then promote up from lock tube 233, are slided upwards from lock tube 233 along from lock assembly 234；
During compression, card tooth 2321 and neck 2331 coordinate, similar to ratchet structure, when up from lock tube 233, and block teeth 232 are to center
The lateral movement of pipe 10, it is ensured that normally can be moved upwards from lock tube 233, card tooth 2321 and the endless total detachment of neck 2331, it is ensured that from
Lock tube 233 can only be moved upwards, it is impossible to be moved downward, and neck 2331 will be blocked by card tooth 2321 when moving downward.Work as center
After the pressure release of pipe 10, card tooth 2321 and neck 2331 coordinate, and tightly block from lock tube 233, complete self-locking, make first set component and
Second sets component not resilience, and holding sets state.During deblocking, above put on joint 24 drive central tube 10 it is up, first sets
Component and second sets component in state is set, and is remained stationary as in the presence of the frictional force produced between sleeve pipe, works as lock
When block 231 is entered at the ring groove 103 of central tube 10 with the part that central tube 10 is fitted, closing piece 231 drives block teeth 232 in
The direction of heart pipe 10 is moved, and departs from neck 2331 and Ka Ya 2321, is unlocked from lock tube 233 descending, and first sets component and second
Set component compression to be released, complete deblocking.When needing to insulate multiple water filling layers, if the common packer used, is carried upper
Required strength is exactly the n (the water filling number of plies is n) times of one-level packing when tubing string is unsealed, that is, needs above carrying for deblocking
Pulling force is very big, but the water injection packer of the present invention in deblocking because only need upper lifting pipe post can be (relative to common packing
Device load very little), therefore 10 grades of deblockings can be reached.The various technological measures such as more than 10 grades seperated layer water injections can be completed；It can enter
Row is repeatedly set, and is reused；Unseal that effect is good simultaneously, solution is honored as a queen packing element hydraulic resistance balance, and workman is easy to operate and control.
As shown in Figure 1, it is necessary to which during anti-flushing well, the annular space between sleeve pipe and water injection packer is suppressed, well-flushing
Liquid is descending through annular space, and because first sets component and set blocking circulation, flushing fluid is by multiple the of the upper bottom of outer barrel 15
One circulation port 151 enters, and is entered by the through hole being opened on upper exterior central tube 11 between upper exterior central tube 11 and central tube 10
The first backwash passage 13, then passing through the 3rd backwash passage, (not shown in figure, the 3rd backwash passage is through whole total from envelope is tested
Into 16, the first backwash passage 13 of connection and the second backwash passage 14), lower exterior central tube 12 is then passed through with the between central tube 10
Two backwash passages 14, backwash liquor promotes backwash piston 18 descending, and ring is entered by the upper top second circulation hole 201 of outer cylinder sheath 20
In shape space, flushing fluid is discharged by being returned on the bottom of central tube 10 from central tube 10, completes anti-flushing well work.The note of the present invention
Water packer backwash operation is simple, and success rate is high, it is easy to operation and grasp, backwash effect is good, it is to avoid the generation of backwash failure,
Reduce the unnecessary loss caused by backwash is failed.
Several embodiments of the present invention are the foregoing is only, those skilled in the art is according to application documents disclosure
Various changes or modification can be carried out to the embodiment of the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. a kind of water injection packer, it is characterised in that including：
Central tube (10), its outer cover is provided with upper exterior central tube (11) and lower exterior central tube (12), the upper exterior central tube (11)
The first backwash passage (13), the lower exterior central tube (12) and the central tube (10) are formed between the central tube (10)
Between be formed with the second backwash passage (14), the central tube (10) be additionally provided with test sealing of hole (101) and first pressurize hole
(102)；First is arranged with outside the upper exterior central tube (11) and sets component, the lower exterior central tube (12) is arranged with the second seat outside
Sealing assembly；
Upper outer barrel (15), it is set on the outside of the central tube (10), and the bottom of the upper outer barrel (15) is set with described first
Component is abutted against, and is provided with first circulation hole (151) on the upper outer barrel (15), the first circulation hole (151) and described the
One backwash passage (13) is connected；
From envelope assembly (16) is tested, it is slideably set in the interior of the central tube (10) and tested on the outside of sealing of hole (101), described to test certainly
The top of envelope assembly (16) sets component with the upper exterior central tube (11) and described first respectively and abutted against, described total from envelope is tested
Bottom into (16) sets component with the lower exterior central tube (12) and described second respectively and abutted against, described from testing envelope assembly
(16) the 3rd backwash passage for connecting the first backwash passage (13) and the second backwash passage (14) is provided with, it is described
From test be provided with envelope assembly (16) can with it is described it is interior test that sealing of hole (101) connects test sealing of hole (161)；
Backwash piston (18), it is set on the outside of the central tube (10)；
Inner cylinder liner (19), it is arranged on the lower section of the backwash piston (18), upper end and the center of the inner cylinder liner (19)
(10) lower end is managed to abut；
Upper outer cylinder sheath (20), it is set on the outside of the backwash piston (18) and the inner cylinder liner (19), the upper outer cylinder sheath
(20) second circulation hole (201) is provided with, the backwash is formed between the central tube (10) and the upper outer cylinder sheath (20)
The plunger shaft of piston (18), first pressurization hole (102) is connected with the plunger shaft of the backwash piston (18)；
Many set self-locking mechanisms, cover the circumferentially spaced outside for being arranged on the central tube (10) of the self-locking mechanism, institute more
Self-locking mechanism is stated including closing piece (231), block teeth (232) and from lock tube (233), it is described be folded in from lock tube (233) it is described outer
Between cylinder (15) and the central tube (10), the closing piece (231) is sticked on the outer wall of the central tube (10), the block teeth
(232) be arranged on it is described between the upper end of lock tube (233) and the closing piece (231), the block teeth (232) slideably with institute
State closing piece (231) to be connected, side of the block teeth (232) away from the central tube (10) is provided with multiple card teeth vertically
(2321) it is, described that the multiple necks coordinated with multiple card tooth (2321) self-lockings are provided with from the inwall of lock tube (233)
(2331)；Ring groove (103) is provided with the central tube (10), the closing piece (231) is arranged on the ring groove (103)
End.
2. water injection packer as claimed in claim 1, it is characterised in that the water injection packer also includes：
Lower piston (21), its be set on the outside of the inner cylinder liner (19), the inner cylinder liner (19) be provided with driving it is described under
Second pressurization hole (191) of piston (21)；
Lower outer cylinder sheath (22), it is set in the outside of the lower piston (21), and the lower piston (21) passes through the lower outer cylinder sheath
(22) lower end with the upper outer cylinder sheath (20) is abutted against；
Lower contact (25), it is connected to the lower end of the inner cylinder liner (19), upper end and the lower piston of the lower contact (25)
(21) abut against.
3. water injection packer according to claim 1, it is characterised in that also including testing envelope outer barrel (17) certainly, it is slidably
Ground is set in described test certainly and seals assembly (16) outside, and the top that envelope outer barrel (17) is tested certainly sets component with described first and offseted
Connect, its bottom sets component with described second and abutted against, it is described outer to test sealing of hole (171) from testing to be provided with envelope outer barrel (17).
4. water injection packer according to claim 3, it is characterised in that set component and described second described first and sit
In the state of sealing assembly is set, the sealing of hole (161) of testing interior test sealing of hole (101) and described outer tests sealing of hole (171) with described respectively
It is connected.
5. water injection packer according to claim 4, it is characterised in that described from envelope assembly (16) is tested towards the center
The side of pipe (10) offers inner groovy (162), described from envelope assembly (16) is tested described in from the side for testing envelope outer barrel (17)
External groove (163) is offered, the inner groovy (162) is connected with the sealing of hole (161) of testing respectively with the external groove (163)
It is logical.
6. water injection packer according to claim 3, it is characterised in that described first, which sets component, includes from top to bottom covering
It is located at the first upper press ring (111) on the outside of the upper exterior central tube (11), packing element (112), the first packing ring (113), on first
One lower rubber cylinder (114) and first time pressure ring (115)；Under the upper end of first upper press ring (111) and the upper outer barrel (15)
End is abutted against, and the lower end of first time pressure ring (115) is with described from testing envelope assembly (16) and described seal outer barrel (17) from testing
Upper end is abutted against.
7. water injection packer according to claim 3, it is characterised in that described second, which sets component, includes from top to bottom covering
It is located at the second upper press ring (121) on the outside of the lower exterior central tube (12), packing element (122), second packing ring (123) second on second
Lower rubber cylinder (124) and second time pressure ring (125)；Outer barrel (17) is sealed in the upper end of second upper press ring (121) with described test certainly
Lower end is abutted against, the lower end of second time pressure ring (125) and the backwash piston (18) and the upper outer cylinder sheath (20) it is upper
End is abutted against.
8. water injection packer according to claim 2, it is characterised in that lower contact (25) outer sheath is provided with trembleuse cup
(26), the trembleuse cup (26) is connected with the lower end of the lower outer cylinder sheath (22).
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| CN201510275998.0A CN104929563B (en) | 2015-05-27 | 2015-05-27 | Water injection packer |
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| CN201510275998.0A CN104929563B (en) | 2015-05-27 | 2015-05-27 | Water injection packer |
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| CN104929563B true CN104929563B (en) | 2017-10-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281634B (en) * | 2018-10-18 | 2020-10-09 | 中国石油化工股份有限公司 | Double-rubber-cylinder packer |
| CN109556764B (en) * | 2018-11-30 | 2024-04-09 | 天地科技股份有限公司 | Measurement and control device of ground stress measurement system |
| CN110593803A (en) * | 2019-10-17 | 2019-12-20 | 成都理工大学 | Integrated infinite-stage fracturing packer |
| CN118242016B (en) * | 2024-05-27 | 2024-08-20 | 西安思坦仪器股份有限公司 | Electric backwashing packer |
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