CN108222879A - A kind of double acting set packer - Google Patents
A kind of double acting set packer Download PDFInfo
- Publication number
- CN108222879A CN108222879A CN201810028902.4A CN201810028902A CN108222879A CN 108222879 A CN108222879 A CN 108222879A CN 201810028902 A CN201810028902 A CN 201810028902A CN 108222879 A CN108222879 A CN 108222879A
- Authority
- CN
- China
- Prior art keywords
- tapered sleeve
- packing element
- upper tapered
- lower tapered
- bushing
- 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.)
- Granted
Links
- 238000012856 packing Methods 0.000 claims abstract description 118
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004904 shortening 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
- 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
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)
- Fluid-Damping Devices (AREA)
Abstract
The invention belongs to oil field well field of tool, more particularly to a kind of double acting set packer, including setting mechanism, packing element component and central tube, packing element component includes upper tapered sleeve, lower tapered sleeve and packing element, upper tapered sleeve and lower tapered sleeve are inserted into the both ends of packing element, it is provided on the inside of packing element both ends and the matched circular conical surface of circular conical surface on the outside of upper tapered sleeve and lower tapered sleeve, bushing is provided on the inside of the packing element, bushing is cylinder-like structure, at least 10 axial joint-cuttings are provided on its outer wall, the incision direction of the axial joint-cutting of adjacent two is opposite, the upper tapered sleeve and the end of lower tapered sleeve are inserted in the inside at bushing both ends.Compared with making the structure that packing element is set by axial compression merely in the prior art, the radial support of packing element is acted on by the conical structure on upper tapered sleeve and lower tapered sleeve, it can make bulging in shorter setting in distance to identical height for packing element, so as to effectively reduce the production cost of packer, and reduce construction technology difficulty.
Description
Technical field
The invention belongs to oil field well field of tool more particularly to a kind of double acting set packers.
Background technology
Packer is common a kind of downhole tool in oilfield process, and structure includes setting mechanism and packing element group
Part, during packer setting, the piston that sets in setting mechanism is moved along the central tube of packer, so as to drive in packing element component
Packing element bulges outward, is acted on so as to fulfill the packing of packer.Packing element bulges what is typically realized by compressing packing element merely, but
The compression distance of existing packing element is longer so that the length of packer is difficult to shorten, and the larger packer of length dimension is in life
There is very big disadvantage in terms of production cost and construction technology difficulty.And go out the present invention is directed to set the thinking of distance from shortening packing element
Hair, researches and develops a kind of smaller packer of length dimension, and being finally reached reduces the production cost of packer and construction technology difficulty
Purpose.
Invention content
The present invention provides a kind of double acting set packer, to solve the problems mentioned in the above background technology.
Technical problem solved by the invention is realized using following technical scheme：
The present invention includes setting mechanism, packing element component and central tube, and setting mechanism and packing element component are sleeved on central tube
On, the packing element component includes upper tapered sleeve, lower tapered sleeve and packing element, and upper tapered sleeve and lower tapered sleeve are inserted into the both ends of packing element, packing element
It is provided on the inside of both ends and is set with the matched circular conical surface of circular conical surface on the outside of upper tapered sleeve and lower tapered sleeve, the inside of the packing element
There is bushing, bushing is cylinder-like structure, is provided at least 10 axial joint-cuttings on outer wall, and adjacent two axial joint-cuttings are cut
Enter direction on the contrary, the upper tapered sleeve and the end of lower tapered sleeve are inserted in the inside at bushing both ends.
As an alternative solution, the packing element component includes upper tapered sleeve, lower tapered sleeve and packing element, upper tapered sleeve and the inserting of lower tapered sleeve
Be provided on the inside of the both ends of packing element, packing element both ends with the matched circular conical surface of circular conical surface on the outside of upper tapered sleeve and lower tapered sleeve, on
It is both provided in pyramidal structure on tapered sleeve and lower tapered sleeve along the equally distributed gap of circular conical surface, shape between adjacent two gap
Into with the matched insertion section of gap size, after packing element is set, the gap on upper tapered sleeve and lower tapered sleeve is mutually inserted with insertion section
Cooperation.
The upper tapered sleeve is identical with the taper of lower tapered sleeve, is 1：2.The outside setting of the upper tapered sleeve and lower tapered sleeve
There is the cyclic annular limiting section that radial direction limiting is carried out to packing element edge.The number of the axial joint-cutting is even number.The axial direction is cut
The width of seam is less than 0.2mm.
Beneficial effects of the present invention are：The present invention carries out innovative design by the structure to packing element component so that packing element is sat
Receive the active force (i.e. dual force) of axially and radially both direction during envelope, axial force by squeeze packing element make packing element to
It bulges outside, this is identical with the stress form of packing element in the prior art, but the radial forces that packing element is born can be from inside to outside by glue
Cylinder is propped outward, so as to which packing element be promoted to bulge further out.Packing element is set with simple in the prior art by axial compression
Structure compare, the radial support of packing element is acted on by the conical structure on upper tapered sleeve and lower tapered sleeve, can make packing element more
Short setting in distance bulges to identical height, so as to effectively reduce the production cost of packer, and reduces construction technology
Difficulty.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the structure diagram of bushing；
Fig. 4 is the structure diagram of another embodiment of packing element component；
Fig. 5 is the sectional view at A in Fig. 4.
In figure：1- setting mechanisms, the upper tapered sleeves of 2-, 3- packing elements, 4- bushings, tapered sleeve under 5-, 6- central tubes, 7- packing element components,
8- ring-type limiting sections, 9- axial direction joint-cuttings, 10- gap, 11- insertion sections.
Specific embodiment
The present invention is described further below in conjunction with attached drawing：
Embodiment one：
The present embodiment includes setting mechanism 1, packing element component 7 and central tube 6, and setting mechanism 1 and packing element component 7 are sleeved on
On central tube 6.It is above common structure of the prior art, details are not described herein.
The packing element component 7 includes upper tapered sleeve 2, lower tapered sleeve 5 and packing element 3, and upper tapered sleeve 2 and lower tapered sleeve 5 are inserted into packing element 3
Both ends, be provided on the inside of 3 both ends of packing element and the matched circular conical surface of circular conical surface in 5 outside of upper tapered sleeve 2 and lower tapered sleeve.Packing element 3
When setting, the pyramidal structure on upper tapered sleeve 2 and lower tapered sleeve 5 is inserted into the process of packing element 3 and the process that is compressed axially of packing element 3 is made jointly
With making packing element 3 that can bulge outward to specified altitude in very short compression distance.
The inside of the packing element 3 is provided with bushing 4, and bushing 4 can be under the action of upper tapered sleeve 2 and lower tapered sleeve 5 with packing element 3
It expands outwardly together, so as to prop up a space without the rubber material filling on packing element 3 in the inside of packing element 3, and then into one
Step causes packing element 3 to set required rubber material and reduce, and then shortens packing element 3 in the case where 3 thickness of packing element is certain
Length then achievees the purpose that shorten packing element compression distance.
Bushing 4 is cylinder-like structure, and at least 10 axial joint-cuttings 9, adjacent two axial joint-cuttings 9 are provided on outer wall
Incision direction on the contrary, the upper tapered sleeve 2 and the end of lower tapered sleeve 5 are inserted in the inside at 4 both ends of bushing.When packing element 3 is set, on
Pyramidal structure on tapered sleeve 2 and lower tapered sleeve 5 is inserted into 4 inside of bushing, and bushing 4 expands outwardly under the forcing of the conical surface, and from axial direction
It is ruptured at joint-cutting 9, the bushing 4 after rupture is scattered, and structure, strip structure are supported on the inside of packing element 3 into strips.Gaily decorated basket shape structure makes
Bushing 4 be easier tear structure, while ensure that strip structure is evenly distributed into strips, avoid because two adjacent strip structures it
Between gap it is excessive and packing element 3 is caused to be extruded into the space on the inside of strip structure.
Present invention employs unique packing element structures, and there are two distinguishing features for packing element structure tool：On the one hand, packing element 3 can
It is swelled outward under the compression of upper tapered sleeve 2, sets packing element 3, at the same time, the pyramidal structure on upper tapered sleeve 2 and lower tapered sleeve 5 is inserted
Enter 3 inside of packing element so that the further outer protuberance of packing element 3 so that packing element 3 sets required rubber material and reduces, in 3 thickness of packing element
The distance of compression packing element 3 is shortened in the case of certain；On the other hand, 3 inside of packing element is provided with bushing 4, and bushing 4 can be in epicone
It is expanded outwardly together with packing element under the action of set 2 and lower tapered sleeve 5, so as to prop up one without the rubber on packing element 3 in 3 inside of packing element
The space of glue material filling, and then further such that packing element sets required rubber material reduction, because of required rubber material
Material is reduced, and the distance of compression packing element 3 is further shortened in the case where 3 thickness of packing element is certain.
The present invention carries out innovative design by the structure to packing element component 7 so that by axially and radially when packing element 3 is set
The active force (i.e. dual force) of both direction, axial force make packing element 3 bulge outward by squeezing packing element 3, this with it is existing
The stress form of packing element 3 is identical in technology, but the radial forces that packing element 3 is born can from inside to outside prop packing element 3 outward, from
And packing element 3 is promoted to bulge further out, therefore, packing element 3 bears the notable area that radial forces are the present invention and the prior art
Not and the present invention generates the key point of excellent technique effect.Specifically, it is compressed axially with simple rely in the prior art
The structure that packing element 3 is set is compared, the radial support of packing element 3 is acted on by the conical structure on upper tapered sleeve 2 and lower tapered sleeve 5,
It can make bulging in shorter setting in distance to identical height for packing element 3, so as to effectively reduce the production cost of packer, and
Reduce construction technology difficulty.
The upper tapered sleeve 2 is identical with the taper of lower tapered sleeve 5, is 1：2, this taper is preferable taper, if taper is excessive,
Then pyramidal structure is not easy to be inserted into packing element 3, if taper is too small, cone structure is smaller to the swollen envelope effect of packing element 3, is unfavorable for glue
The reduction of 3 axial lengths of cylinder.
The upper tapered sleeve 2 and the outside of lower tapered sleeve 5 are provided with the cyclic annular limiting section that radial direction limiting is carried out to 3 edge of packing element
8, cyclic annular limiting section 8 when packing element 3 is acted on by axial and radial force, can avoid the edge of packing element 3 from tilting.
The number of the axial joint-cutting 9 is even number, only in this way, could complete rapid processing by wire cutting.
The width of the axial joint-cutting 9 is less than 0.2mm, after can reducing 4 fragmentation of bushing to the full extent, each strip structure
Between gap, packing element 3 is further avoided to be extruded into the space on the inside of strip structure.
Embodiment two：
The present embodiment and the difference for differing only in packing element modular construction of embodiment one, the present embodiment eliminate embodiment
Bushing 4 in one, and increase gap structure on upper tapered sleeve 2 and lower tapered sleeve 5.
The structure of packing element component described in the present embodiment includes upper tapered sleeve 2, lower tapered sleeve 5 and packing element 3, and upper tapered sleeve 2 is under
Tapered sleeve 5 is inserted into the both ends of packing element 3, and the circular conical surface with 5 outside of upper tapered sleeve 2 and lower tapered sleeve is provided on the inside of 3 both ends of packing element
The circular conical surface matched is both provided with along the equally distributed gap 10 of circular conical surface, phase in the pyramidal structure on upper tapered sleeve 2 and lower tapered sleeve 5
It is formd and the matched insertion section 11 of 10 size of gap, after packing element 3 is set, upper tapered sleeve 2 and lower cone between two adjacent gap 10
Gap 10 on set 5 is mutually inserted cooperation with insertion section 11.By setting gap structure, tapered sleeve 2 and lower tapered sleeve 5 into one can be made
Step is close.Meanwhile after upper tapered sleeve 2 and lower tapered sleeve 5 are inserted into cooperation, the section that can also be overlapped in upper tapered sleeve 2 and lower tapered sleeve 5 is formed
Without the gap of the rubber material filling on packing element 3, so as to play the effect identical with the bushing 4 in embodiment one.
Claims (5)
1. a kind of double acting set packer, including setting mechanism (1), packing element component (7) and central tube (6), setting mechanism (1)
It is sleeved on central tube (6) with packing element component (7), it is characterised in that：The packing element component (7) including upper tapered sleeve (2), under
Tapered sleeve (5) and packing element (3), upper tapered sleeve (2) and lower tapered sleeve (5) are inserted into the both ends of packing element (3), are set on the inside of packing element (3) both ends
It is equipped with and is provided on the inside of (3) with the matched circular conical surface of circular conical surface on the outside of upper tapered sleeve (2) and lower tapered sleeve (5), the packing element
Bushing (4), bushing (4) are cylinder-like structure, and at least 10 axial joint-cuttings (9), adjacent two axial directions are provided on outer wall
The incision direction of joint-cutting (9) is on the contrary, the upper tapered sleeve (2) and the end of lower tapered sleeve (5) are inserted in the inside at bushing (4) both ends.
2. a kind of double acting set packer according to claim 1, it is characterised in that：As an alternative solution, it is described
Packing element component includes upper tapered sleeve (2), lower tapered sleeve (5) and packing element (3), and upper tapered sleeve (2) and lower tapered sleeve (5) are inserted into packing element (3)
Both ends, be provided on the inside of packing element (3) both ends with the matched circular conical surface of circular conical surface on the outside of upper tapered sleeve (2) and lower tapered sleeve (5), on
It is both provided in pyramidal structure on tapered sleeve (2) and lower tapered sleeve (5) along the equally distributed gap of circular conical surface (10), adjacent two
Formd between gap (10) with gap (10) matched insertion section of size (11), after packing element (3) is set, upper tapered sleeve (2) and under
Gap (10) on tapered sleeve (5) is mutually inserted cooperation with insertion section (11).
3. a kind of double acting set packer according to claim 1 or 2, it is characterised in that：The upper tapered sleeve (2) and
The taper of lower tapered sleeve (5) is identical, is 1：2.
4. a kind of double acting set packer according to claim 1, it is characterised in that：The upper tapered sleeve (2) and under
The cyclic annular limiting section (8) that radial direction limiting is carried out to packing element (3) edge is provided on the outside of tapered sleeve (5).
5. a kind of double acting set packer according to claim 1, it is characterised in that：The axial joint-cutting (9)
Number is even number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028902.4A CN108222879B (en) | 2018-01-12 | 2018-01-12 | Double-acting setting packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810028902.4A CN108222879B (en) | 2018-01-12 | 2018-01-12 | Double-acting setting packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108222879A true CN108222879A (en) | 2018-06-29 |
| CN108222879B CN108222879B (en) | 2020-08-21 |
Family
ID=62640527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810028902.4A Active CN108222879B (en) | 2018-01-12 | 2018-01-12 | Double-acting setting packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108222879B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847018A (en) * | 2021-09-30 | 2021-12-28 | 于婷婷 | General pilot production tool for packing off earth formation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201103375Y (en) * | 2007-11-30 | 2008-08-20 | 新疆石油管理局采油工艺研究院 | Bidirectional sealing wedge type packer |
| US20100051293A1 (en) * | 2008-09-02 | 2010-03-04 | Halliburton Energy Services, Inc. | Downhole tool with load diverting system and method |
| CN202170775U (en) * | 2011-08-05 | 2012-03-21 | 宝鸡石油机械有限责任公司 | Elastic bearing positioning device for hanging underwater mud line tube sleeve |
| CN102733777A (en) * | 2012-06-11 | 2012-10-17 | 新疆华油油气工程有限公司 | Hydraulic setting/unsetting high-pressure packer |
| CN103306635A (en) * | 2013-06-28 | 2013-09-18 | 中国石油天然气股份有限公司 | Steel skeleton rubber tube |
| CN205135538U (en) * | 2015-10-20 | 2016-04-06 | 天鼎联创密封技术（北京）有限公司 | Sealing member and compression packer |
| CN207111037U (en) * | 2018-01-12 | 2018-03-16 | 大庆市天德忠石油科技有限公司 | A kind of double acting set packer |
-
2018
- 2018-01-12 CN CN201810028902.4A patent/CN108222879B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201103375Y (en) * | 2007-11-30 | 2008-08-20 | 新疆石油管理局采油工艺研究院 | Bidirectional sealing wedge type packer |
| US20100051293A1 (en) * | 2008-09-02 | 2010-03-04 | Halliburton Energy Services, Inc. | Downhole tool with load diverting system and method |
| CN202170775U (en) * | 2011-08-05 | 2012-03-21 | 宝鸡石油机械有限责任公司 | Elastic bearing positioning device for hanging underwater mud line tube sleeve |
| CN102733777A (en) * | 2012-06-11 | 2012-10-17 | 新疆华油油气工程有限公司 | Hydraulic setting/unsetting high-pressure packer |
| CN103306635A (en) * | 2013-06-28 | 2013-09-18 | 中国石油天然气股份有限公司 | Steel skeleton rubber tube |
| CN205135538U (en) * | 2015-10-20 | 2016-04-06 | 天鼎联创密封技术（北京）有限公司 | Sealing member and compression packer |
| CN207111037U (en) * | 2018-01-12 | 2018-03-16 | 大庆市天德忠石油科技有限公司 | A kind of double acting set packer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847018A (en) * | 2021-09-30 | 2021-12-28 | 于婷婷 | General pilot production tool for packing off earth formation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108222879B (en) | 2020-08-21 |
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