CN106761535A - A kind of packer - Google Patents
A kind of packer Download PDFInfo
- Publication number
- CN106761535A CN106761535A CN201611052803.7A CN201611052803A CN106761535A CN 106761535 A CN106761535 A CN 106761535A CN 201611052803 A CN201611052803 A CN 201611052803A CN 106761535 A CN106761535 A CN 106761535A
- Authority
- CN
- China
- Prior art keywords
- rubber sleeve
- packing rubber
- track
- packer
- centralizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012856 packing Methods 0.000 claims abstract description 85
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000005553 drilling Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1042—Elastomer protector or centering means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of packer, including：Joint；Packer body, the packer body includes upper packing rubber sleeve, lower packing rubber sleeve, and upper packing rubber sleeve and lower packing rubber sleeve are set on central tube, and guiding mechanism is provided between upper packing rubber sleeve and lower packing rubber sleeve, guide chamber is formed with guiding mechanism, guiding mechanism two ends are respectively connected with central tube；Position-limit mechanism is connected with the bottom of lower packing rubber sleeve, and position-limit mechanism includes centralizer, track pipe is equipped with centralizer and centralizer is fixedly connected with track pipe, and central tube is equipped with the pipe of track, and track groove is provided with the pipe of track, and sliding shoe is provided with central tube.Guide chamber is provided with pilot hole, flexible drillstem and coiled tubing are changed into horizontal direction by vertical direction, it is capable of achieving radial well drilling well, packer is put by above putting, packer setting and deblocking are realized, it is not only simple to operate, set reliability, the pressure loss that fracturing fluid is produced due to circulation passage cataclysm can also be reduced, pressure break quality is improved.
Description
Technical field
It is used for radial well fracturing packer the present invention relates to oil and gas wells in oil fields fracturing technique field, more particularly to one kind.
Background technology
Radial well drilling technology is a kind of new horizontal well drilling technology, and its radius of curvature only 0.3m compares conventional levels
The radius of curvature of well is shorter, therefore also referred to as " super short radial horizontal well ".The operation principle of the technology is the target zone in design and construction
In section, by the diverted device of high-pressure injection pipe in the well section with the radius of curvature of 0.3m by the horizontal depths of vertical duction, thereon
Nozzle while advance with high-pressure nozzle, spray high-pressure fluid, fractured rock is carried out in the way of rotating jet, so as to be formed
Diameter is about the radial level well of 90mm.The horizontal bore dia of radial well is small, therefore radial well is commonly applied to coal bed gas, shale gas
Development process in solving the problems, such as that borehole wall stability is poor.But because borehole diameter is small, the pipe that conventional gas and oil pressure break is used without
Method is applied to radial well pressure break, and current radial well fracturing work is normal by means of packer packing spacer pipe, then by oil pipe to payzone
High pressure pumps into fracturing fluid.
The pressure of fluid in radial well lateral aperture is improved, but because well is too small, horizontal segment is entered in highly pressurised liquid
When produce compared with lossy, fracturing effect is not obvious, and existing radial well drilling fracturing construction operation program is cumbersome, therefore,
A kind of packer how is proposed, radial well pressure break can be applied to, be those skilled in the art's technical issues that need to address.
The content of the invention
It is an object of the invention to propose a kind of packer, radial well pressure break can be applied to, realize radial well drilling well pressure
Integration is split, and highly pressurised liquid is small into energy loss during horizontal segment, fracturing effect is obvious.It is that, up to this purpose, the present invention is used
Following technical scheme：
A kind of packer is provided, including：
Joint；
Packer body, the packer body includes upper packing rubber sleeve, lower packing rubber sleeve, the upper packing rubber sleeve and lower envelope
It is set on central tube every packing element, is provided between the upper packing rubber sleeve and the lower packing rubber sleeve
Guiding mechanism, is formed with guide chamber in the guiding mechanism, flexible drillstem and continuous is provided with the guide chamber
Oil pipe passage, the guiding mechanism two ends are respectively connected with central tube；
Position-limit mechanism, the position-limit mechanism is connected with the bottom of the lower packing rubber sleeve, and the position-limit mechanism includes righting
Device, is equipped with track pipe in the centralizer and the centralizer is fixedly connected with the track pipe, is worn in the track pipe
Have central tube, track groove be provided with the track pipe, be provided with the central tube along the track groove rotation,
Above carry, drop-down sliding shoe.
In oilfield process, the packer is connected to tubing string, and packer is put during to underground, and sliding shoe is logical positioned at track
Groove topmost, when, at desired depth, upper lifting pipe post, packer prepares to set under packer, back lower place tubing string and apply to push away
Power, sliding shoe guide head slides into the bottom of the track groove in the groove of track, and now centralizer is mutually supported with casing wall
Clamping is connect, continues lower ejector sleeve post, upper and lower packing rubber sleeve is compressed, upper and lower packing rubber sleeve diameter is become big, packing oil jacket annular
Space completes to set, and after the completion of operation, upper lifting pipe post, the central tube of packer is up therewith, and track pipe keeps not with centralizer
Dynamic, when the upward lifting power of tubing string is more than the frictional force between centralizer and casing wall, packing rubber sleeve is subject to upward pulling force
More than the frictional force of casing wall, packing rubber sleeve is integrally pulled upwardly, and then packing rubber sleeve thrust is cancelled recovery.By above putting
Packer is put, setting and unsealing for packer can be realized, it is not only simple to operate, set reliability.
Pilot hole is provided with the wall of guide chamber side, and then flexible drillstem and coiled tubing are changed into level side by vertical direction
To, it is possible to achieve radial well drilling well, packer is put by above putting, setting and unsealing for packer can be realized, not only operate
Simply, reliability is set, is a kind of new power tool flexible drillstem for being applied to the integration of radial well drilling fracturing and continuous
Oil pipe can not only reduce work flow, can also reduce the pressure loss that fracturing fluid is produced due to circulation passage cataclysm, carry
Pressure break quality high.
Preferably, the track groove include lower elongated slot, swivelling chute and upper short groove, the swivelling chute respectively with it is described under
Elongated slot, upper short groove connection, and the upper short groove is located at the surface of the lower elongated slot, the swivelling chute is along the track tube side wall
It is circumferentially disposed.
Go up short groove and be located at the surface of lower elongated slot, and then can be rotated by 360 ° pilot hole and come back to its original orientation, protect
Card aligns with radial direction pressure break point, realizes radial direction pressure break.
Preferably, the centralizer includes centralizer body, the centralizer body is circumferentially evenly equipped with brake pad, and the track pipe is worn
If crossing centralizer body and spring being provided between the brake pad and the track pipe, the spring respectively with the brake pad, help
Roman is abutted.
Spring is abutted with brake pad, centralizer body respectively, ensure that packer is mutually abutted in sleeve pipe with casing wall, bullet
Spring can be compressed, it is ensured that packer enables brake pad that generation is separated with internal surface of sleeve pipe while abutting with internal surface of sleeve pipe relative
It is mobile.
Preferably, the centralizer also includes that centralizer top cover and centralizer body bottom cover, the centralizer is by fixing
It is outer that screw is fixed on track pipe.
Centralizer is fixed on outside the pipe of track by fixed screw, and centralizer can be made to drive track pipe to move when moving up
It is dynamic, and then ensure that packer is integrally moved up.
Preferably, the sliding shoe is pin, the pin is arranged in the track groove.
Sliding shoe is pin, can be easy to materials, further cost-effective without specific customization.
Preferably, the joint includes top connection and lower contact, the top connection and the central tube, the lower contact
It is connected through a screw thread with the track Guan Jun.
Using being threadedly coupled between top connection and central tube, lower contact and track pipe, can be easy to change parts, while
Threaded connection can will be fastened between top connection and central tube, lower contact and track pipe, be tightly connected.
Preferably, the upper packing rubber sleeve, the quantity of lower packing rubber sleeve are two, two upper packing rubber sleeves it
Between be provided with sealing ring and upper isolating ring, the upper packing rubber sleeve is provided directly with upper isolating ring, two institutes with the top connection
State and be provided with lower seal and lower isolating ring between lower packing rubber sleeve.
Upper packing rubber sleeve is two with lower packing rubber sleeve quantity, ensure that packer is stuck in sleeve pipe, while setting
The purpose of sealing ring and spacer ring is the sealing property for ensureing packing rubber sleeve, and the anti-high-voltage performance of packing rubber sleeve is ensured again.
Preferably, the guiding mechanism upper end is connected with the upper packing rubber sleeve, the guiding mechanism lower end with it is described
Lower packing rubber sleeve connection, stop collar is provided between the guiding mechanism and the upper packing rubber sleeve, lower packing rubber sleeve.
Preferably, the guiding mechanism two ends are threadedly coupled with the central tube respectively.
Guiding mechanism two ends are threadedly coupled with central tube respectively, ensure that and be completely embedded therebetween, it is not easy to occur
Leakage problem.
Brief description of the drawings
Fig. 1 is the front view of the packer that the present invention is provided；
Fig. 2 is the side view of the packer that the present invention is provided；
Fig. 3 is the partial enlarged drawing of track groove in Fig. 2.
In figure：
1st, top connection；2nd, upper isolating ring；3rd, upper packing rubber sleeve；4th, upper sealing ring；5th, upper center tube；6th, lower center tube；7th, it is solid
Determine screw；8th, flexible drillstem and coiled tubing passage；9th, track pipe；10th, track groove；101st, lower elongated slot；102nd, swivelling chute；
103rd, upper short groove；11st, centralizer top cover；12nd, centralizer body bottom set；13rd, stop collar；14th, lower packing rubber sleeve；15th, lower seal；
16th, lower isolating ring；17th, sliding shoe；18th, spring；19th, brake pad；20th, centralizer body；21st, lower contact；22nd, track pipe top cover；23rd, lead
To mechanism's top connection；24th, guiding mechanism lower contact；25th, guide chamber；26th, pilot hole.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and by specific
Implementation method further illustrates technical scheme.
As shown in Figure 1, 2, a kind of packer for radial well pressure break is disclosed in the present embodiment, highly pressurised liquid can be made
Small into energy loss during horizontal segment, fracturing effect is obvious.
The packer includes：Joint；Packer body, wherein packer body include upper packing rubber sleeve 3, lower packing rubber sleeve 14,
The upper packing rubber sleeve 3 and lower packing rubber sleeve 14 are set on central tube, and upper packing rubber sleeve 3 and lower packing rubber sleeve 14
Can not be random moved on central tube, that is, going up packing rubber sleeve 3 and lower packing rubber sleeve 14 can not move axially, but can send out
Raw radial deformation, i.e. sealing cylinder middle part are expanded causes diameter to become big；The upper packing rubber sleeve 3 and the lower packing rubber sleeve 14
Between be provided with guiding mechanism, the guiding mechanism can make flexible drillstem and coiled tubing by vertically switching to level, the guiding
It is formed with mechanism in guide chamber 25, the guide chamber 25 and is provided with flexible drillstem and coiled tubing passage 8, the side wall of guide chamber 25
On be provided with pilot hole 26, flexible drillstem and coiled tubing passage 8 are connected with pilot hole 26, and flexible drillstem and coiled tubing are stretched into
Pilot hole 26 is stretched out in one end of guiding mechanism, and the guiding mechanism two ends are respectively connected with central tube, and guiding mechanism two ends are distinguished
It is guiding mechanism top connection 23, guiding mechanism lower contact 24, guiding mechanism top connection 23, guiding mechanism lower contact 24 are respectively with
Heart pipe screw thread is connected；
Position-limit mechanism, the position-limit mechanism is connected with the bottom of the lower packing rubber sleeve 14, and the position-limit mechanism includes helping
Positive device, is equipped with track pipe 9 and the centralizer is fixedly connected with the track pipe 9, in the track pipe 9 in the centralizer
Central tube is equipped with, track groove 10 is provided with the track pipe 9, be provided with the central tube logical along the track
Groove 10 rotates, above carries, drop-down sliding shoe 17.Above-mentioned sliding shoe 17 is pin, and the pin is arranged at the track groove 10
It is interior.The pin is fixed on central tube, can be slided in track groove 10 with the movement of central tube.
The position-limit mechanism can realize that packer predeterminated position in sleeve pipe is fixed, and upper packing rubber sleeve exists with lower packing rubber sleeve
When being lowered into precalculated position in sleeve pipe, upper packing rubber sleeve and lower packing rubber sleeve are squeezed the deformation for producing in the radial direction, in
Portion collides and radially become greatly, and then can insulate oil sets annular space.
Due to the diameter of the radial direction maximum length slightly larger than sleeve pipe of position-limit mechanism, therefore, when packer is in sleeve pipe
Non-default position can be stuck in and can not be continued to reach deep down into, it is necessary to artificial above carry packer and send packer still further below again,
And track pipe 9 is set and then can solve the problem that above mentioned problem, when packer is stuck in non-default position, packer is first above carried, Jin Erneng
Sliding shoe 17 is enough set above to be carried, then rotary packer can make packer integral-rotation and be upwardly separated from sleeve pipe.
The upper end of track pipe 9 is additionally provided with track pipe top cover 22, and track pipe top cover 22 is located at lower isolating ring 16 and centralizer top cover
It is used to limit the position of lower isolating ring 16 and centralizer top cover 11 between 11.
Above-mentioned track groove 10 includes lower elongated slot 101, swivelling chute 102 and upper short groove 103 (referring to Fig. 2), the swivelling chute
102 are connected with the lower elongated slot 101, upper short groove 103 respectively, and the upper short groove 103 is located at just going up for the lower elongated slot 101
Side, the swivelling chute 102 is circumferentially disposed along the side wall of the track pipe 9.Upper short groove 103 is located at the surface of lower elongated slot 101, can
Ensure that sliding shoe 17 is rotated by 360 ° in swivelling chute 102, and then ensure that pilot hole is still within initial position after rotation, make
Coiled tubing position, direction such as will not shift at the change, it is ensured that pressure break point position is correct.
Above-mentioned centralizer includes centralizer body 20, and the centralizer body 20 is circumferential to be evenly equipped with brake pad 19, and the track pipe 9 wears
Cross centralizer body 20 and spring 18 is provided between the brake pad 19 and the track pipe 9, the spring 18 rubs with described respectively
Cleaning block 19, centralizer body 20 are abutted.The centralizer also includes centralizer top cover 11 and centralizer body bottom set 12, and the centralizer leads to
Cross outside fixed screw fixation and track pipe 9.
The joint includes top connection 1 and lower contact 21, the top connection 1 and the central tube, the lower contact 21 with
The track pipe 9 is connected through a screw thread.More specifically, top connection 1 is threadedly coupled with upper center tube 5, lower contact 21 and rail
Mark pipe 9 is threadedly coupled.Above-mentioned central tube includes upper center tube 5 and lower center tube 6, and wherein upper center tube 5 passes through upper packing rubber sleeve 3
Be connected with top connection 1, lower center tube 6 is then slided in the track pipe 9 through lower packing rubber sleeve 14, guiding mechanism top connection 23 with
Upper center tube 5 is threadedly coupled, and guiding mechanism lower contact 24 is threadedly coupled with lower center tube 6.
The upper packing rubber sleeve 3, the quantity of lower packing rubber sleeve 14 are two, are set between two upper packing rubber sleeves 3
Sealing ring 4 is equipped with, the upper packing rubber sleeve 3 is provided directly with upper isolating ring 2, two lower packing glue with the top connection 1
Lower seal 15 and lower isolating ring 16 are provided between cylinder 14.The structure ensure that the sealing of packing rubber sleeve.
The guiding mechanism upper end is connected with the upper packing rubber sleeve 3, the guiding mechanism lower end and the lower packing glue
Cylinder 14 is connected, and stop collar 13 is provided between the guiding mechanism and the upper packing rubber sleeve 3, lower packing rubber sleeve 14.
In oilfield process, tubing string is connected to by by the packer, the packer is lowered into from sleeve pipe first
Precalculated position, coiled tubing lower end connection flexible drillstem, flexible drillstem is by the pilot hole 25 of guide chamber 25 by vertically switching to water
It is flat, realize that self-advancing type creeps into the presence of fluid pressure propulsion and high-pressure fluid are broken.The operations such as drilling to be done, well-flushing
Afterwards, tubing string is transferred after upper lifting pipe post rotates a circle again, centralizer causes centralizer body 20 and casing wall by the elastic force of spring 18
Frictional force, the brake pad 19 inlayed on centralizer body 20 can increase frictional force, and sliding shoe 17 is from the bottom dead centre edge of upper short groove 103
The position that track groove 10 moves to the top dead-centre of lower elongated slot.Bottom dead centre is moved to along lower elongated slot 101 afterwards, is moved herein
During, top connection 1, upper isolating ring 2, guide chamber 25, lower isolating ring 16 are moved downward, and centralizer is kept not due to the effect of frictional force
It is dynamic, thus compression upper packing rubber sleeve 3, lower packing rubber sleeve 14, packing rubber sleeve diameter is become big, insulate oil sets annular space.
After packing oil sets annular space is formed, oil pipe passes through guide chamber 25 by vertically switching to level, to infusion in lateral aperture
Fracturing fluid, when the pressure of fluid in lateral aperture is higher than rock rupture pressure, rock is pressed off, and forms crack.After the completion of pressure break,
Upper lifting pipe post, upper street corner 1, upper isolating ring 2, guide chamber 25, lower isolating ring 16 are moved upwards, and upper center tube 5, lower center tube 6 are on
OK, sliding shoe 17 moves to top dead-centre along lower elongated slot 101, while centralizer is due to frictional force, produces a downward power, can
Make packing rubber sleeve equal under tension up and down, so that packing rubber sleeve recovers deformation, sleeve pipe deblocking.
Note, general principle of the invention and principal character and advantages of the present invention has been shown and described above.The industry
Technical staff it should be appreciated that the present invention is not limited to the embodiments described above, described in above-mentioned implementation method and specification
Merely illustrate the principles of the invention, without departing from the spirit and scope of the present invention, the present invention also have various change and
Improve, these changes and improvements all fall within the protetion scope of the claimed invention, and claimed scope of the invention is by appended
Claims and its equivalent thereof.
Claims (9)
1. a kind of packer, it is characterised in that including：
Joint；
Packer body, the packer body include upper packing rubber sleeve (3), lower packing rubber sleeve (14), the upper packing rubber sleeve (3) with
And lower packing rubber sleeve (14) is set on central tube, set between the upper packing rubber sleeve (3) and the lower packing rubber sleeve (14)
It is equipped with
Guiding mechanism, is formed with guide chamber (25) in the guiding mechanism, pilot hole is provided with the wall of guide chamber (25) side
(26) flexible drillstem and coiled tubing passage (8), are provided with the guide chamber (25), the guiding mechanism two ends are respectively connected with
Central tube；
Position-limit mechanism, the position-limit mechanism is connected with the bottom of the lower packing rubber sleeve (14), and the position-limit mechanism includes righting
Device, is equipped with track pipe (9) in the centralizer and the centralizer is managed (9) with the track and is fixedly connected, the track pipe
(9) central tube is equipped with, track groove (10) is provided with track pipe (9), edge is provided with the central tube
The track groove (10) rotates, above carries, drop-down sliding shoe (17).
2. packer according to claim 1, it is characterised in that the track groove (10) includes lower elongated slot (101), rotation
Turn trough (102) and upper short groove (103), the swivelling chute (102) are connected with the lower elongated slot (101), upper short groove (103) respectively,
And the upper short groove (103), positioned at the surface of the lower elongated slot (101), the swivelling chute (102) manages (9) side along the track
Wall is circumferentially disposed.
3. packer according to claim 1 and 2, it is characterised in that the centralizer includes centralizer body (20), described to help
Roman (20) is circumferentially evenly equipped with brake pad (19), track pipe (9) be fed through centralizer body (20) and the brake pad (19) with
Spring (18) is provided between track pipe (9), the spring (18) is supported with track pipe (9), brake pad (19) respectively
Connect.
4. packer according to claim 3, it is characterised in that the centralizer also includes centralizer top cover and righting
Body bottom covers, and the centralizer is fixed on track by fixed screw (7) manages (9) outward.
5. packer according to claim 4, it is characterised in that the sliding shoe (17) is pin, the pin is set
In the track groove (10).
6. packer according to claim 1, it is characterised in that the joint includes top connection (1) and lower contact (21),
The top connection (1) is connected through a screw thread with the central tube, the lower contact (21) and track pipe (9).
7. packer according to claim 6, it is characterised in that the upper packing rubber sleeve (3), lower packing rubber sleeve (14)
Quantity is two, and sealing ring (4) and upper isolating ring (2), the upper envelope are provided between two upper packing rubber sleeves (3)
Upper isolating ring (2) is provided directly with every packing element (3) and the top connection (1), is provided between two lower packing rubber sleeves (14)
Lower seal (15) and lower isolating ring (16).
8. packer according to claim 1, it is characterised in that the guiding mechanism upper end and the upper packing rubber sleeve
(3) connect, the guiding mechanism lower end is connected with the lower packing rubber sleeve (14), the guiding mechanism and the upper packing rubber sleeve
(3), it is provided with stop collar (13) between lower packing rubber sleeve (14).
9. packer according to claim 1, it is characterised in that the guiding mechanism two ends respectively with the central tube spiral shell
Line is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052803.7A CN106761535A (en) | 2016-11-24 | 2016-11-24 | A kind of packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052803.7A CN106761535A (en) | 2016-11-24 | 2016-11-24 | A kind of packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106761535A true CN106761535A (en) | 2017-05-31 |
Family
ID=58911049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611052803.7A Pending CN106761535A (en) | 2016-11-24 | 2016-11-24 | A kind of packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236150A (en) * | 2021-07-12 | 2021-08-10 | 东营胜蓝石油科技开发有限公司 | Centralizer for hydraulic oil pipe |
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| CN201620816U (en) * | 2009-12-16 | 2010-11-03 | 中国石油天然气股份有限公司 | Deep well fracturing and acidizing packer |
| CN203626705U (en) * | 2013-10-31 | 2014-06-04 | 中国石油天然气股份有限公司 | Side-drilling slim hole fracturing packer |
| CN204691755U (en) * | 2015-05-14 | 2015-10-07 | 北京百恒达石油技术有限公司 | The stepless limit fracturing tool of coiled tubing |
| CN204941345U (en) * | 2015-07-07 | 2016-01-06 | 中国石油大学(北京) | A kind of radial well transfer with packing function |
| CN205063891U (en) * | 2015-10-22 | 2016-03-02 | 盐城市弘通石油机械有限公司 | Deep well packer |
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| CN113236150A (en) * | 2021-07-12 | 2021-08-10 | 东营胜蓝石油科技开发有限公司 | Centralizer for hydraulic oil pipe |
| CN113236150B (en) * | 2021-07-12 | 2021-09-03 | 东营胜蓝石油科技开发有限公司 | Centralizer for hydraulic oil pipe |
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Application publication date: 20170531 |