CN107387017A - Draining type double leather cup reservoir protector - Google Patents
Draining type double leather cup reservoir protector Download PDFInfo
- Publication number
- CN107387017A CN107387017A CN201710561086.9A CN201710561086A CN107387017A CN 107387017 A CN107387017 A CN 107387017A CN 201710561086 A CN201710561086 A CN 201710561086A CN 107387017 A CN107387017 A CN 107387017A
- Authority
- CN
- China
- Prior art keywords
- central tube
- leather cup
- cup seat
- seat
- oil
- 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.)
- Withdrawn
Links
- 239000010985 leather Substances 0.000 title claims abstract description 56
- 230000001012 protector Effects 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000011010 flushing procedure Methods 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 5
- 239000012188 paraffin wax Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000033764 rhythmic process Effects 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
- E21B33/122—Multiple string packers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
Draining type double leather cup reservoir protector; it is related to oil extraction in oil field technical field; including top connection, central tube and leather cup; described leather cup shares two, and upper leather cup and down cup are set on leather cup seat and down cup seat, and upper leather cup seat and down cup seat are sleeved on the epimere on the outside of central tube; wherein; the lower end of upper leather cup seat is connected by screw thread with the upper end of down cup seat, and the lower end of down cup seat is threadedly attached on central tube, and down cup seat is provided with oil leak hole sealing ring on the inside of lower end；Hypomere on the outside of described central tube is provided with erection device, and the upper end of erection device is provided with sealing piston.The present invention can in well-flushing automatic-sealed oil sets annular space, so as to avoid pollution of the flushing fluid to oil reservoir.Meanwhile the oil leak hole on central tube can be opened by rotating oil pipe, so as to which the well liquid in tubing string be discharged before lift pipe string, ground pollution caused by being brought to ground so as to the well liquid avoided in tubing string.
Description
Technical field
The invention belongs to oil extraction in oil field technical field, more particularly to a kind of draining type double leather cup reservoir protector.
Background technology
Rod-pumped well is most common a kind of oil well type in the production of oil field, in Process of Oil Pumping Unit Well, it is necessary to fixed
Phase irregularly carries out well-flushing, and the paraffin, the glue that are deposited on deep well pump valve or other well liquid flow passage components are deposited on so as to remove
Matter pitch and other solidfied materials, reach the purpose for releasing pump leakage, improving pump efficiency, reducing load.However, in the prior art, due to
Strata pressure is relatively low, flushing fluid during well-flushing can usually cause oil layer pollution into oil reservoir, this pollution effect well washing effect,
The maintenance cycle of oil well is shortened, influences the oil production of oil well, unnecessary loss is brought to production unit.In addition, playing pipe
During post, more well liquid can be usually housed in tubing string, these well liquids are above carried to ground with tubing string, can cause dirt to ground environment
Dye.
The content of the invention
In order to solve technical problem present in background technology, the present invention provides a kind of draining type double leather cup oil layer protection
Device.
Technical problem solved by the invention is realized using following technical scheme：It is double the invention provides a kind of draining type
Leather cup reservoir protector, including top connection, central tube and leather cup, top connection are connected to the upper end of central tube, top connection upper end
The standard tubing round thread of connected pipes is separately provided on the outside of inner side and central tube lower end, described leather cup shares two
Individual, respectively upper leather cup and down cup, upper leather cup and down cup are set on leather cup seat and down cup seat, upper leather cup seat
The epimere on the outside of central tube is sleeved on down cup seat, wherein, the lower end of upper leather cup seat is upper by screw thread and down cup seat
End connection, the lower end of down cup seat are threadedly attached on central tube, and it is close to be provided with oil leak hole on the inside of down cup seat lower end
Seal；
Hypomere on the outside of described central tube is provided with erection device, and its structure includes centralizer body and brake pad, centralizer body
It is sleeved on central tube, described brake pad shares four, and each brake pad annular spread brake pad and is helped around centralizer body
Spring is provided between roman, sliding pin is installed in centralizer body, helicla flute is machined with the outer wall of described central tube, it is sliding
The end of dynamic pin is inserted in helicla flute, so as to which centralizer body is arranged on central tube；
The upper end of erection device is provided with sealing piston, and sealing piston is together slided with centralizer body on central tube, sealing
When being moved on the epimere of piston between described oil leak hole sealing ring and central tube, sealing piston is close by the oil leak hole on central tube
Envelope；
The cross section of described oil leak hole sealing ring is U-shaped structure, and the opening of U-shaped structure is towards in oil leak hole sealing ring
The heart, the support ring of steel is provided with the inside of oil leak hole sealing ring.
Steel bushing and lower steel bushing, upper steel bushing and lower steel bushing difference are respectively arranged with the outside of described upper leather cup and down cup
It is threadedly attached on leather cup seat and down cup seat.The hand of spiral of described helicla flute is left-handed.
Beneficial effects of the present invention are：The present invention can in well-flushing automatic-sealed oil sets annular space, so as to avoid well-flushing
Pollution of the liquid to oil reservoir.Meanwhile the oil leak hole on central tube can be opened by rotating oil pipe, so that by tubing string before lift pipe string
Interior well liquid discharge, ground pollution caused by being brought to ground so as to the well liquid avoided in tubing string.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the partial enlarged drawing at A in Fig. 1；
Fig. 3 is tubular column structure schematic diagram when applying the present invention to anti-pollution pipe string；
Fig. 4 is tubular column structure schematic diagram when applying the present invention to paraffin cutting cleaning tubing string.
In figure：1- top connections, the upper leather cups of 2-, the upper leather cup seats of 3-, the upper steel bushings of 4-, 5- down cups, 6- down cup seats, steel under 7-
Set, 8- sealing pistons, 9- centralizer bodies, 10- brake pads, 11- springs, 12- helicla flutes, 13- sliding pins, 14- central tubes, 15-
Oil leak hole, 16- oil leak hole sealing rings, 17- support rings, 18- oil well pumps, 19- screen casings, 20- draining type double leather cups oil reservoir are protected
Protect device, 21- ball-and-seats, 22- plugs, 23- oil pipes, 24- paraffin scrapers.
Embodiment
The present invention is described further below in conjunction with accompanying drawing：
The present embodiment includes top connection 1, central tube 14 and leather cup, and top connection 1 is connected to the upper end of central tube 14, top connection
The standard tubing round thread of connected pipes 23 is separately provided on the outside of the inner side and the lower end of central tube 14 of 1 upper end.
Described leather cup shares two, and respectively upper leather cup 2 and down cup 5, upper leather cup 2 and down cup 5 are set in
On upper leather cup seat 3 and down cup seat 6, upper leather cup seat 3 and down cup seat 6 are sleeved on the epimere in the outside of central tube 14.The present invention
After installation, upward, after liquid is injected in oil jacket annular space, leather cup will be in the work of head of liquid for the opening of two leather cups
With lower distending, so as to realize the automatic plugging of oil jacket annular space, avoid flushing fluid in washing well process from entering oil reservoir, dirt is caused to oil reservoir
Dye.
The lower end of upper leather cup seat 3 is connected by screw thread with the upper end of down cup seat 6, and the lower end of down cup seat 6 passes through screw thread
It is connected on central tube 14.Compared with the connected mode that two leather cup seats are connected on central tube, using by upper leather cup
Seat 3 and down cup seat 6 are connected through a screw thread into the connected mode being connected again with central tube after component and have remarkable advantage, a side
Face, this connected mode can effective center of reduction pipe 14 structure, reduce process-cycle and the manufacturing cost of central tube；It is another
Aspect, can be first by upper leather cup 2, upper leather cup seat 3, upper steel bushing 4, down cup 5, down cup seat 6 and lower steel using this connected mode
Component is assembled under set 7 is online, then carries out online general assembly again, compared with all parts assemble online, this assembling mode
Assembly technology can be simplified, be easy to the arrangement of rhythm of production, also make it that the matching of each operation in producing line is more flexible, so as to effectively reduce
Production difficulty, improve production efficiency.
Down cup seat 6 is provided with oil leak hole sealing ring 16 on the inside of lower end.
The hypomere in the described outside of central tube 14 is provided with erection device, and its structure includes centralizer body 9 and brake pad 10, helps
Roman 9 is sleeved on central tube 14, and described brake pad 10 shares four, week of each annular spread of brake pad 10 in centralizer body 9
Enclose, spring 11 is provided between brake pad 10 and centralizer body 9.Tubing string righting can be prevented eccentric wear by erection device.
Sliding pin 13 is installed in centralizer body 9, helicla flute 12, sliding pin are machined with the outer wall of described central tube 14
The end of nail 13 is inserted in helicla flute 12, and so as to which centralizer body 9 is arranged on central tube 14, the upper end of erection device is provided with close
Seal piston 8.
Tubing string is rotated on ground, central tube 14 rotates together with tubing string, and in the rotary course of central tube 14, sliding pin 13 exists
Moved up under the guiding of helicla flute 12, until moving to described oil leak hole sealing ring 16 and central tube 14 on the epimere of sealing piston 8
Between, now sealing piston 8 blocks the oil leak hole 15 on central tube 14.
The cross section of described oil leak hole sealing ring 16 is U-shaped structure, and the opening of U-shaped structure is towards oil leak hole sealing ring 16
Center, the inner side of oil leak hole sealing ring 16 is provided with the support ring 17 of steel.The oil leak hole sealing ring 16 of said structure is this
The innovative structure of invention, it is different from traditional O-ring seal, there are two sealing surfaces, and two sealings on such a sealing ring
Face is for sealing the same face of cylinder in sealing piston 8, and this is close compared with only having the O-ring seal of a sealing surface
Envelope reliability greatly improves, and the possibility of seal failure substantially reduces.Simultaneously as two sealing surfaces are located at same sealing ring
On, and support ring 17 is provided with the inside of sealing ring so that the possibility that oil leak hole sealing ring 16 is come off by liquid flow impact is zero,
So as to be further ensured that the reliability of sealing.
Described upper leather cup 2 and the outside of down cup 5 are respectively arranged with steel bushing 4 and lower steel bushing 7, upper steel bushing 4 and lower steel
Set 7 is threadedly attached on leather cup seat 3 and down cup seat 6 respectively.Upper steel bushing 4 and lower steel bushing 7 are bound round in the upper He of leather cup 2 respectively
The outside of down cup 5, leather cup 2 and down cup 5 is avoided to come off.
The hand of spiral of described helicla flute 12 is left-handed.
The mounting means of the present invention is as follows：
Oil well pump 18, screen casing 19, draining type double leather cup packer 20, ball-and-seat 21, another is sequentially connected by oil pipe 23
Root screen casing 19, tail pipe and plug 22, you can connect into anti-pollution pipe string.In anti-pollution pipe string, draining type double leather cup oil reservoir is protected
Protect device 20 bottom connection ball-and-seat 21, be connected under flow string pump between two screen casings, gone into the well then as tubing string, under extremely
Invert (left-handed) tubing string 5-7 during projected depth to enclose, the drain tap on instrument is closed, and is seated in tubing hanger, is reached well-flushing not contaminated oil
Layer purpose.
In addition, the present invention is also applied in paraffin cutting tubing string, specific connected mode is：Sieve is sequentially connected by oil pipe 23
Pipe 19, draining type double leather cup packer 20, ball-and-seat 21 and paraffin scraper 24.
The present invention can in well-flushing automatic-sealed oil sets annular space, so as to avoid pollution of the flushing fluid to oil reservoir.Meanwhile
The oil leak hole 15 on central tube 14 can be opened by rotating oil pipe 23, so as to which the well liquid in tubing string be discharged before lift pipe string,
Ground pollution caused by being brought to ground so as to the well liquid avoided in tubing string.
Claims (3)
1. a kind of draining type double leather cup reservoir protector, including top connection (1), central tube (14) and leather cup, top connection (1) connection
In the upper end of central tube (14), the company of being separately provided on the outside of the inner side and central tube (14) lower end of top connection (1) upper end
Connect the standard tubing round thread of oil pipe (23), it is characterised in that：Described leather cup shares two, respectively upper leather cup (2) and hypodermis
Bowl (5), upper leather cup (2) and down cup (5) be set on leather cup seat (3) and down cup seat (6), upper leather cup seat (3) and
Down cup seat (6) is sleeved on the epimere on the outside of central tube (14), wherein, the lower end of upper leather cup seat (3) passes through screw thread and hypodermis
The upper end connection of bowl seat (6), the lower end of down cup seat (6) are threadedly attached on central tube (14), down cup seat (6) lower end
Inner side be provided with oil leak hole sealing ring (16)；
Hypomere on the outside of described central tube (14) is provided with erection device, and its structure includes centralizer body (9) and brake pad (10),
Centralizer body (9) is sleeved on central tube (14), and described brake pad (10) shares four, and each brake pad (10) annular spread is being helped
Around roman (9), spring (11) is provided between brake pad (10) and centralizer body (9), sliding pin is installed in centralizer body (9)
Follow closely (13), be machined with helicla flute (12) on the outer wall of described central tube (14), the end of sliding pin (13) is inserted in helicla flute
(12) in, so as to which centralizer body (9) is arranged on central tube (14)；
The upper end of erection device is provided with sealing piston (8), and sealing piston (8) is with centralizer body (9) together on central tube (14)
Slide, when being moved on the epimere of sealing piston (8) between described oil leak hole sealing ring (16) and central tube (14), sealing piston
(8) oil leak hole (15) on central tube (14) is blocked；
The cross section of described oil leak hole sealing ring (16) is U-shaped structure, and the opening of U-shaped structure is towards oil leak hole sealing ring (16)
Center, the support ring (17) of steel is provided with the inside of oil leak hole sealing ring (16).
A kind of 2. draining type double leather cup reservoir protector according to claim 1, it is characterised in that：Described upper leather cup
(2) steel bushing (4) and lower steel bushing (7) and on the outside of down cup (5) are respectively arranged with, upper steel bushing (4) and lower steel bushing (7) lead to respectively
Cross and be threaded on leather cup seat (3) and down cup seat (6).
A kind of 3. draining type double leather cup reservoir protector according to claim 1, it is characterised in that：Described helicla flute
(12) the hand of spiral is left-handed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561086.9A CN107387017A (en) | 2017-07-11 | 2017-07-11 | Draining type double leather cup reservoir protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710561086.9A CN107387017A (en) | 2017-07-11 | 2017-07-11 | Draining type double leather cup reservoir protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107387017A true CN107387017A (en) | 2017-11-24 |
Family
ID=60339417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710561086.9A Withdrawn CN107387017A (en) | 2017-07-11 | 2017-07-11 | Draining type double leather cup reservoir protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107387017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098689A (en) * | 2018-08-31 | 2018-12-28 | 康庆刚 | Energy saving and environment friendly leather cup pressure release type hot wash not pressure oil layer device |
| CN110821443A (en) * | 2018-08-09 | 2020-02-21 | 中国石油天然气股份有限公司 | RD valve perforation protector and layered perforation oil testing tubular column |
-
2017
- 2017-07-11 CN CN201710561086.9A patent/CN107387017A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821443A (en) * | 2018-08-09 | 2020-02-21 | 中国石油天然气股份有限公司 | RD valve perforation protector and layered perforation oil testing tubular column |
| CN110821443B (en) * | 2018-08-09 | 2021-09-28 | 中国石油天然气股份有限公司 | RD valve perforation protector and layered perforation oil testing tubular column |
| CN109098689A (en) * | 2018-08-31 | 2018-12-28 | 康庆刚 | Energy saving and environment friendly leather cup pressure release type hot wash not pressure oil layer device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171124 |
|
| WW01 | Invention patent application withdrawn after publication |