CN109441396A - A kind of temporary enclosed packer - Google Patents
A kind of temporary enclosed packer Download PDFInfo
- Publication number
- CN109441396A CN109441396A CN201811594785.4A CN201811594785A CN109441396A CN 109441396 A CN109441396 A CN 109441396A CN 201811594785 A CN201811594785 A CN 201811594785A CN 109441396 A CN109441396 A CN 109441396A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- packing element
- pawl sliding
- sealing ring
- packer
- 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- Withdrawn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
- 238000012856 packing Methods 0.000 claims abstract description 37
- 230000037361 pathway Effects 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 31
- 238000004073 vulcanization Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000002028 premature Effects 0.000 abstract description 4
- 238000007667 floating Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000020477 pH reduction Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010008 shearing Methods 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting 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
- E21B33/122—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)
- Gasket Seals (AREA)
Abstract
The invention discloses a kind of temporary enclosed packers, top connection lower thread connection transition joint upper end is simultaneously fixed by fixing pin, transition joint lower end connects upper rubber tube seat upper end by upper interior helmet suit, upper rubber tube seat lower part is arranged packing element and is connected by upper steel loop threaded upper ends, packing element lower end is threadedly coupled lower rubber cylinder seat by lower steel loop, central tube lower end is provided with the first feed pathway, lower rubber cylinder seat lower part is provided with pawl sliding sleeve using both ends floating structure, guarantee the load performance of packer, feed pathway is controlled by pawl sliding sleeve, it can prevent during going into the well since liquid flow impact causes the premature setting of packer, can protect packing element prevents from wearing, present invention is mainly applied to pressure breaks, acidification, in the technological measures such as water filling, for insulating stratum, due to the temporary closure feed pathway of pawl sliding sleeve, it can be in work progress Restting is prevented, the packing element service life is long, and inventive structure design is rationally, easy to operate, easy for construction.
Description
Technical field
The present invention relates to a kind of oilfield machinery and equipment, specifically a kind of temporary enclosed packer.
Background technique
Packer is used to be layered in petroleum production engineering, and design has oil channel on packer, when setting, piston bush uplink,
Oil channel is opened;After setting, upper stressor layer is acted on dummy piston, pushes up packing element, makes to unseal pin from shearing
Power;When deblocking, deblocking pin is cut by the frictional force of packing element and casing, piston bush downlink closes oil channel.
The common packer in oil field is divided into two kinds of structures of compression and expanding, and Inflatable type packer rubber sleeve is mainly by curtain
Wire structures, the expanding packing element that oil field uses are to realize setting for packer by the pressure difference between inside and outside, but constructing
There are problems in the process.
Existing packing element structure is simple, load performance is low, is not provided with resistance sand structure, and feed pathway is easy to cause into sand
Sand stuck glue cylinder does not have anti-setting mechanism, is easy premature setting and sets repeatedly, packing element is caused to damage.
Summary of the invention
The purpose of the present invention is to provide a kind of temporary enclosed packers, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of temporary enclosed packer, including top connection, transition joint, central tube, packing element, pawl sliding sleeve and fixed ring；Top connection
Threaded upper ends connected pipes, top connection lower thread connection transition joint upper end are simultaneously fixed by fixing pin, in indirectly
Head lower section inner thread connects central tube upper end outer wall；The transition joint lower end connects upper rubber tube seat by upper interior helmet suit
Upper end, upper interior helmet are threadedly coupled with upper rubber tube seat, and upper rubber tube seat lower part is arranged packing element and is connected by upper steel loop threaded upper ends；
The packing element lower end is threadedly coupled lower rubber cylinder seat by lower steel loop, and central tube lower end is provided with the first feed pathway, lower rubber cylinder seat
Lower part is provided with pawl sliding sleeve；
Pawl sliding sleeve upper end is socketed inside central tube lower end, and pawl sliding sleeve lower end is socketed inside lower contact upper end, central tube
Lower end is threadedly coupled with lower contact, and lower contact upper end outer cover limits inside the lower end of lower rubber cylinder seat and through lower interior helmet
Position；The lower interior helmet is threadedly coupled with lower rubber cylinder seat, and lower contact upper end is equipped with the second feed pathway, lower contact and lower rubber cylinder seat
Between reserve third feed pathway.
As a further solution of the present invention: passing through twice the between the transition joint external wall of upper portion and top connection inner wall
One sealing ring is tightly connected, and is tightly connected between transition joint lower part outer wall and top connection inner wall by twice third sealing ring.
As further scheme of the invention: the packing element is by upper steel loop, interior rubber, steel wire, outer rubber and lower steel
Epithioization, which is integrally formed, fixes.
As further scheme of the invention: being reserved with the 4th feed pathway between the packing element and central tube.
As further scheme of the invention: the pawl sliding sleeve outer cover is equipped with 4 the 4th sealing rings, and pawl is sliding
Set lower end offers slot gap.
As further scheme of the invention: the pawl sliding sleeve outer cover, which is equipped with fixed ring and passes through shear pin, to be connected
It connects.
As further scheme of the invention: being equipped with the 5th sealing ring of twice outside the lower contact upper end.
As further scheme of the invention: the lower contact is threadedly coupled back tight cap, and lower contact lower end is provided with confession
The unlatching channel that pawl sliding sleeve passes through, lower contact lower end are connected through a screw thread with oil pipe.
As the present invention further scheme: first sealing ring, the second sealing ring, third sealing ring, the 4th close
Seal and the 5th sealing ring are all made of O-ring.
Compared with prior art, the beneficial effects of the present invention are: the device controls feed pathway by using pawl sliding sleeve,
Prevent packer premature setting and set repeatedly, packing element is effectively protected, using slot structure can prevent sand into
Enter feed pathway, prevent sand stuck glue cylinder, provides packing element using inside and outside rubber and process wire structure by optimization packing element structure
Load performance provide pressure-resistant performance and by using both ends floating structure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of temporary enclosed packer.
Fig. 2 is the cross-sectional view of A-A in temporary enclosed packer.
Fig. 3 is the partial enlarged view in temporary enclosed packer at E.
Fig. 4 is the cross-sectional view of B-B in temporary enclosed packer.
Fig. 5 is the partial enlarged view in temporary enclosed packer at F.
Fig. 6 is the cross-sectional view of C-C in temporary enclosed packer.
In figure: 1- top connection；The first sealing ring of 2-；3- transition joint；4- fixing pin；Helmet in 5- is upper；6- second is close
Seal；7- third sealing ring；The upper rubber tube seat of 8-；9- central tube；10- packing element；11- lower rubber cylinder seat；The 4th sealing ring of 12-；13- spine
Pawl sliding sleeve；The 5th sealing ring of 14-；Interior helmet under 15-；16- back tight cap；17- shear pin；18- fixed ring；19- lower contact；
The first feed pathway of 55-；The second feed pathway of 66-；77- third feed pathway；The 4th feed pathway of 88-；99- opens channel；
100- slot gap；The upper steel loop of 111-；Rubber in 222-；333- steel wire；The outer rubber of 444-；Steel loop under 555-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Please refer to Fig. 1~6, in the embodiment of the present invention, a kind of temporary enclosed packer, including top connection 1, transition joint 3, central tube
9, packing element 10, pawl sliding sleeve 13 and fixed ring 18；The 1 threaded upper ends connected pipes of top connection, the connection of 1 lower thread of top connection
3 upper end of transition joint is simultaneously fixed by fixing pin 4, wherein passes through between 1 inner wall of 3 external wall of upper portion of transition joint and top connection
The first sealing ring of twice 2 is tightly connected, and passes through twice third sealing ring 7 between 3 lower part outer wall of transition joint and 1 inner wall of top connection
It is tightly connected, 3 lower section inner thread of transition joint connects 9 upper end outer wall of central tube, and is sealed and connected by the second sealing ring of twice 6
It connects, is connected by multiple-sealed circle so that being sealed between top connection 1 and transition joint 3 and central tube 9, uses threaded connection
Mode guarantees mechanical strength, while easy to disassemble；3 lower end of transition joint connects upper rubber tube seat 8 by the upper interior suit of helmet 5
Upper end, wherein helmet 5 is threadedly coupled with upper rubber tube seat 8 in upper, and upper 8 lower part of rubber tube seat is arranged packing element 10 and passes through upper steel loop 111
Threaded upper ends connection, packing element 10 are socketed in the outside of central tube 9, it should be noted that are reserved between packing element 10 and central tube 9
4th feed pathway 88 is limited between upper rubber tube seat 8 and transition joint 3 using the upper interior realization of helmet 5, passes through upper steel loop
Docking between 11 realization packing elements 10 and upper rubber tube seat 8.
The packing element 10 is by upper steel loop 111, interior rubber 222, steel wire 333, outer rubber 444 and lower steel loop 555 vulcanization one
Body formed fixation, wherein 10 lower end of packing element is threadedly coupled lower rubber cylinder seat 11 by lower steel loop 555, and 9 lower end of central tube is provided with the
One feed pathway 55,11 lower part of lower rubber cylinder seat are provided with pawl sliding sleeve 13, and closer, 13 outer cover of pawl sliding sleeve is equipped with four
The 4th sealing ring 12 of road, it should be noted that 13 lower end of pawl sliding sleeve offers slot gap 100, temporary using pawl sliding sleeve 13
When close the first feed pathway 55 so that liquid will not enter the 4th feed pathway 88 between central tube 9 and packing element 10；
13 outer cover of pawl sliding sleeve is equipped with fixed ring 18 and is connected by shear pin 17, and 13 upper end of pawl sliding sleeve is socketed central tube
Inside 9 lower ends, 13 lower end of pawl sliding sleeve is socketed inside 19 upper end of lower contact, and 9 lower end of central tube is threadedly coupled with lower contact 19, under
The 5th sealing ring 14 of twice is equipped with outside 19 upper end of connector, 19 upper end outer cover of lower contact is inside the lower end of lower rubber cylinder seat 11
And limited by lower interior helmet 15, channel is opened by the part that 13 lower end of pawl sliding sleeve enters 19 lower end of lower contact；Under described
Interior helmet 15 is threadedly coupled with lower rubber cylinder seat 11, and 19 upper end of lower contact is equipped with the second feed pathway 66, lower contact 19 and lower rubber cylinder
Third feed pathway 77 is reserved between seat, after pawl sliding sleeve 13 opens, the first feed liquor that steel ball passes through 9 lower end of central tube is logical
Road 55 enter 19 upper end of lower contact the second feed pathway 66 subsequently into the third between lower contact 19 and lower rubber cylinder seat 11 into
Liquid channel 77.
Embodiment 2
It is more full and accurate and complete in order to illustrate the technical solution in the application, make portion on the basis of present above-described embodiment 1
Divide supplement and explanation, so that technological means employed in the application discloses more sufficiently, specifically, supplements and illustrate portion
The technical characteristic divided is that the lower contact 19 is threadedly coupled back tight cap 16, realizes the limit function to lower rubber cylinder seat 11, lower contact
19 lower ends are provided with the unlatching channel 99 passed through for pawl sliding sleeve 13, and 19 lower end of lower contact is connected through a screw thread with oil pipe, and first
Sealing ring 2, the second sealing ring 6, third sealing ring 7, the 4th sealing ring 12 and the 5th sealing ring 14 are all made of O-ring.
The working principle of the invention is: the temporary enclosed packer is usually multistage to be throttled using and with sand blast sliding sleeve or acidification
Device or the mating application of injection well downhole flow regulator, tubing string is during going into the well, due to 13 the first feed pathway of temporary closure 55 of pawl sliding sleeve, liquid
The 4th feed pathway 88 between temporary enclosed packer central tube 9 and packing element 10 will not be entered, temporary enclosed packer is avoided and mention
Before set, junior's packer of first constructing after tool tripping in place, temporary envelope of the temporary enclosed packer of higher level due to pawl sliding sleeve 13
It closing, the temporary enclosed packer of higher level will not be set, the damage so as to avoid restting to packing element, after the completion of junior's construction, from
Oil pipe puts into corresponding steel ball, and steel ball enters the spherical surface of 13 lower end of pawl sliding sleeve of temporary enclosed packer by oil pipe, well head after
Continuous to suppress, pawl sliding sleeve 13 cuts 17 downlink of shear pin, and 17 lower end of pawl sliding sleeve enters the pawl sliding sleeve of 19 lower end of lower contact
13 open channel, and the first feed pathway 55 that pawl sliding sleeve opening steel ball passes through central tube lower end enters 19 upper end of lower contact
The second feed pathway 66 subsequently into the third feed pathway 77 between lower contact 19 and lower rubber cylinder seat 11, finally enter in device
The 4th feed pathway 88 between heart pipe 9 and packing element 10, packing element 10 rise envelope outward under the effect of the pressure, the outer rubber of packing element 10
444, which are close to internal surface of sleeve pipe, insulates annular spaces, upper rubber tube seat 8 and lower rubber cylinder seat 11 due to the limit of upper interior helmet 5 and lower interior helmet 15,
It may be implemented to compensate automatically, improve pressure-resistant performance.
It should be strongly noted that pawl sliding sleeve and shear pin are the application of the prior art in the application, pawl is utilized
Sliding sleeve realizes the first feed pathway of temporary closure when tubing string is gone into the well, and avoids temporary enclosed packer premature setting and restting
Damage to packing element, upper rubber tube seat and lower rubber cylinder seat may be implemented to compensate automatically due to the limit of upper interior helmet and lower interior helmet,
Pressure-resistant performance is improved, rubber tube seat uses both ends floating structure using inside and outside rubber and process wire structure, and up and down, improves
The load performance of packer, using pawl sliding sleeve temporarily controls feed pathway, can prevent midway from setting and setting repeatedly, adopt
With slit type structure, sand will not enter feed pathway, and preventing sand stuck glue cylinder is the innovative point of the application, efficiently solves glue
The problem of barrel structure is simple, load performance is low, is not provided with resistance sand structure and is not provided with anti-setting mechanism.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of temporary enclosed packer, including top connection (1), transition joint (3), central tube (9), packing element (10), pawl sliding sleeve
(13) and fixed ring (18)；Top connection (1) threaded upper ends connected pipes, which is characterized in that top connection (1) lower thread connects
It connects transition joint (3) upper end and is fixed by fixing pin (4), below transition joint (3) in inner thread connection central tube (9)
Hold outer wall；Transition joint (3) lower end connects upper rubber tube seat (8) upper end, upper interior helmet (5) by upper interior helmet (5) suit
It is threadedly coupled with upper rubber tube seat (8), upper rubber tube seat (8) lower part is arranged packing element (10) and is connected by upper steel loop (111) threaded upper ends
It connects；Packing element (10) lower end is threadedly coupled lower rubber cylinder seat (11) by lower steel loop (555), and central tube (9) lower end is provided with the
One feed pathway (55), lower rubber cylinder seat (11) lower part are provided with pawl sliding sleeve (13)；
Inside pawl sliding sleeve (13) upper end socket central tube (9) lower end, pawl sliding sleeve (13) lower end is socketed lower contact (19)
Inside upper end, central tube (9) lower end is threadedly coupled with lower contact (19), and lower contact (19) upper end outer cover is mounted in lower rubber cylinder seat
(11) it is limited inside lower end and by lower interior helmet (15)；The lower interior helmet (15) is threadedly coupled with lower rubber cylinder seat (11),
Lower contact (19) upper end is equipped with the second feed pathway (66), and third feed pathway is reserved between lower contact (19) and lower rubber cylinder seat
(77).
2. a kind of temporary enclosed packer according to claim 1, which is characterized in that transition joint (3) external wall of upper portion
It is tightly connected between top connection (1) inner wall by the first sealing ring of twice (2), transition joint (3) lower part outer wall and top connection
(1) it is tightly connected between inner wall by twice third sealing ring (7).
3. a kind of temporary enclosed packer according to claim 1, which is characterized in that the packing element (10) is by upper steel loop
(111), interior rubber (222), steel wire (333), outer rubber (444) and lower steel loop (555) vulcanization are integrally formed and fix.
4. a kind of temporary enclosed packer according to claim 3, which is characterized in that the packing element (10) and central tube (9)
Between be reserved with the 4th feed pathway (88).
5. a kind of temporary enclosed packer according to claim 1, which is characterized in that be arranged outside the pawl sliding sleeve (13)
There are 4 the 4th sealing rings (12), pawl sliding sleeve (13) lower end offers slot gap (100).
6. a kind of temporary enclosed packer according to claim 1, which is characterized in that be arranged outside the pawl sliding sleeve (13)
There is fixed ring (18) and is connected by shear pin (17).
7. a kind of temporary enclosed packer according to claim 1, which is characterized in that set outside lower contact (19) upper end
There is the 5th sealing ring (14) of twice.
8. a kind of temporary enclosed packer according to claim 1, which is characterized in that the lower contact (19) is threadedly coupled back
Tight cap (16), lower contact (19) lower end is provided with the unlatching channel (99) passed through for pawl sliding sleeve (13), lower contact (19) lower end
It is connected through a screw thread with oil pipe.
9. -8 any a kind of temporary enclosed packer according to claim 1, which is characterized in that first sealing ring (2),
Second sealing ring (6), third sealing ring (7), the 4th sealing ring (12) and the 5th sealing ring (14) are all made of O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594785.4A CN109441396A (en) | 2018-12-25 | 2018-12-25 | A kind of temporary enclosed packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811594785.4A CN109441396A (en) | 2018-12-25 | 2018-12-25 | A kind of temporary enclosed packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441396A true CN109441396A (en) | 2019-03-08 |
Family
ID=65535632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811594785.4A Withdrawn CN109441396A (en) | 2018-12-25 | 2018-12-25 | A kind of temporary enclosed packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441396A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145274A (en) * | 2019-06-14 | 2019-08-20 | 海塔石油科技有限公司 | A kind of controllable K341 inflatable packer |
-
2018
- 2018-12-25 CN CN201811594785.4A patent/CN109441396A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145274A (en) * | 2019-06-14 | 2019-08-20 | 海塔石油科技有限公司 | A kind of controllable K341 inflatable packer |
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|---|---|---|---|
| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190308 |