CN107130924A - A kind of centralizer device of bow partially - Google Patents
A kind of centralizer device of bow partially Download PDFInfo
- Publication number
- CN107130924A CN107130924A CN201710462569.3A CN201710462569A CN107130924A CN 107130924 A CN107130924 A CN 107130924A CN 201710462569 A CN201710462569 A CN 201710462569A CN 107130924 A CN107130924 A CN 107130924A
- Authority
- CN
- China
- Prior art keywords
- centralizer
- bow
- stop
- conical surface
- inner ring
- 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
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- 230000000694 effects Effects 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram 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
- 238000012856 packing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding 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
- 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
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a kind of centralizer device of bow partially, including centralizer body, the two ends of the centralizer body are equipped with locating snap ring, the centralizer body is hollow structure, including multiple brace rods being uniformly distributed circumferentially, and having gap between two neighboring brace rod, the brace rod is asymmetric inclined bow structure, and the arcuate section of two neighboring asymmetric inclined bow structure is staggeredly arranged.By giving traditional centralizer increase bow support meanss partially, pad is reduced, using monolithic construction, make the centralizer that there is higher casing centering effect, larger annular space area of passage, can effectively improve circulating fluid displacement efficiency, when sleeve pipe enters lower curved section or horizontal segment, sleeve body can be made not to be close to the base of well, righting effect is good, and friction area reduces, so as to reduce the coefficient of friction resistance between sleeve pipe and the borehole wall, frictional resistance is greatly reduced, sleeve pipe is smoothly entered well.
Description
Technical field
The invention belongs to oil development cementing tool technical field, and in particular to a kind of centralizer device of bow partially.
Background technology
In order to improve well yield and oil recovery factor, oil and gas development production cost is reduced, horizontal well technology is obtained extensively
Application.But, the horizontal segment of horizontal well tubing string can be affected by gravity, causes packing element unbalance stress, and this can make
The sealing property for obtaining packer declines, while interval of interest can not effectively be separated, subsection water injection, staged fracturing, completion, machine
The process pipe strings such as tool water detection water blockoff can not realize predetermined purpose.
In order to solve the problem of horizontal segment of horizontal well tubing string can be influenceed by gravity, prior art uses rigid centralizer
It is used alternatingly with elastic centralizer, but it each has the shortcomings that different, weight of such as elastic centralizer in horizontal case respectively
The lower righting effect of power effect is limited, and rigid centralizer brings larger frictional resistance to the tripping in of sleeve pipe or oil pipe, for oil gas
Not good to the righting effect of pipe string during horizontal cementing operation, area of passage is smaller.And existing stop ring structure is to sleeve pipe
There is certain damage, influence cementing operation quality.
The content of the invention
The purpose of the present invention is to overcome existing rigid centralizer and elastic centralizer righting effect limited, under sleeve pipe
Enter to bring larger frictional resistance, and area of passage is small, and existing stop ring structure to sleeve pipe the problem of have certain damage.
Therefore, the invention provides a kind of centralizer device of bow partially, including centralizer body, the two of the centralizer body
End is equipped with locating snap ring, and the centralizer body is hollow structure, including multiple brace rods being uniformly distributed circumferentially, and adjacent
There is gap between two brace rods, the brace rod is asymmetric inclined bow structure, and the bow of two neighboring asymmetric inclined bow structure
Shape part is staggeredly arranged.
The locating snap ring includes stop inner ring and stop outer shroud, and the stop inner ring is connected with centralizer body two ends, institute
State stop outer shroud and be set in that stop inner ring is outer and both are fixedly connected.
The stop inner ring is included outside compressible structure and the first pontes set gradually from top to bottom, the stop
Ring includes the compressing structure set gradually from top to bottom and second connecting portion point, and the internal diameter of the compressing structure is less than compressible knot
The external diameter of structure, the stop outer shroud and stop inner ring are outer to be connected by the first pontes and with second connecting portion point.
The compressible structure is made up of the first compression conical surface, collapsible part, constringency cleft, and described first compresses the conical surface
Located at the top of stop inner ring, the collapsible part is connected with the bottom of the first compression conical surface, and described first compresses on the conical surface
It is small lower big；
The constringency cleft compresses the conical surface and collapsible part through first, and the constringency cleft is circumferentially uniformly arranged multiple, general
The first compression conical surface and collapsible part are divided into many parts.
The compressing structure is the second compression conical surface, and described second, which compresses the conical surface, is located at stop outer shroud top, described second
Compress the conical surface up-small and down-big.
Many part two ends that the first compression conical surface is divided into are equipped with teeth groove, the teeth groove at each constringency cleft two ends
Match somebody with somebody.
The stop outer shroud and stop inner ring are connected through a screw thread.
The stop inner ring material is spring steel.
The first of the stop inner ring compresses the conical surface and collapsible part under the compressing structure effect of stop outer shroud, Xiang Fu
The outer wall of positive device body is close, tapers into constringency cleft, until both sides teeth groove is at a fully engaged, the first of stop inner ring compresses
The conical surface and collapsible part hold centralizer body tightly, fix centralizer body.
The beneficial effects of the invention are as follows：
This inclined bow centralizer device that the present invention is provided, by giving traditional centralizer increase bow support meanss partially, reduces welding
Point, using monolithic construction, makes the centralizer have higher casing centering effect, larger annular space area of passage can be effective
Circulating fluid displacement efficiency is improved, when sleeve pipe enters lower curved section or horizontal segment, sleeve body can be made not to be close to the bottom of well
Side, righting effect is good, and friction area reduces, so as to reduce the coefficient of friction resistance between sleeve pipe and the borehole wall, greatly reduces friction resistance
Power, makes sleeve pipe smoothly enter well.
Change the fixed structure of traditional centralizer locating snap ring, to sleeve pipe without any destruction, it is adaptable to which well depth structure is answered
The longer oil gas horizontal well of miscellaneous, horizontal segment is used.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the assembling schematic diagram of the present invention；
Fig. 3 is the structural representation of stop inner ring；
Fig. 4 is the structural representation of stop outer shroud.
In figure：1st, centralizer body；2nd, stop inner ring；3rd, stop outer shroud；4th, brace rod；5th, first the conical surface is compressed；6th, may be used
Constriction；7th, the first pontes；8th, second the conical surface is compressed；9th, second connecting portion point；10th, constringency cleft；11st, teeth groove.
Embodiment
Embodiment 1：
Present embodiments provide a kind of inclined bow centralizer device as shown in Figure 1 and Figure 2, including centralizer body 1, the righting
The two ends of device body 1 are equipped with locating snap ring, the centralizer body 1 is hollow structure, including multiple are uniformly distributed circumferentially
There is gap between brace rod 4, and two neighboring brace rod 4, the brace rod 4 is asymmetric inclined bow structure, and two neighboring non-
The arcuate section of the symmetrical structure of bow partially is staggeredly arranged.
This inclined bow centralizer device that the present embodiment is provided is arranged on sleeve surface, and centralizer body 1 is stopped by two ends
Rotating ring is fixed, and circumferential equally distributed brace rod 4 is asymmetric inclined bow structure, increases annular circulation area, can effectively improve
Circulating fluid displacement efficiency, when sleeve pipe enters lower curved section or horizontal segment, can make sleeve body not be close to the base of well, help
Plus effect is good, and friction area reduces, so as to reduce the coefficient of friction resistance between sleeve pipe and the borehole wall, greatly reduces frictional resistance, makes
Sleeve pipe smoothly enters well.
Embodiment 2：
On the basis of embodiment 1, a kind of centralizer device of bow partially is present embodiments provided, the locating snap ring includes stop inner ring
2 and stop outer shroud 3, the stop inner ring 2 is connected with the two ends of centralizer body 1, and the stop outer shroud 3 is set in stop inner ring 2
It is outer and both be fixedly connected.
The stop inner ring 2 includes compressible structure and the first pontes 7 set gradually from top to bottom, the stop
Outer shroud 3 includes the compressing structure set gradually from top to bottom and second connecting portion point 9, and the internal diameter of the compressing structure is less than and can pressed
The external diameter of locking structure, the stop outer shroud 3 and stop inner ring 2 are outer to be connected by the first pontes 7 and with second connecting portion point 9
Connect.
This inclined bow centralizer device that the present embodiment is provided, by the compressing structure of stop outer shroud 3 to stop inner ring 2
Compressible structure is compressed, so that centralizer body 1 is fixed on sleeve pipe, sleeve pipe is damaged without any, the He of stop outer shroud 3
Stop inner ring 2 is outer to be connected by the first pontes 7 and with second connecting portion point 9.
Embodiment 3：
On the basis of embodiment 2, a kind of centralizer device of bow partially is present embodiments provided, the compressible structure is by the first pressure
The tight conical surface 5, collapsible part 6, constringency cleft 10 are constituted, and described first compresses the top that the conical surface 5 is located at stop inner ring 2, described
Collapsible part 6 is connected with the bottom of the first compression conical surface 5, and the first compression conical surface 5 is up-small and down-big；
The constringency cleft 10 compresses the conical surface 5 and collapsible part 6 through first, and the constringency cleft 10 is circumferentially uniformly arranged many
It is individual, the first compression conical surface 5 and collapsible part 6 are divided into many parts.
The compressing structure is second to compress the conical surface 8, and described second, which compresses the conical surface 8, is located at the top of stop outer shroud 3, described the
The two compression conical surfaces 8 are up-small and down-big.
Many part two ends that the first compression conical surface 5 is divided into are equipped with teeth groove 11, each two ends of constringency cleft 10
Teeth groove 11 is matched.
As shown in Figure 3, Figure 4, the first of stop inner ring 2 compresses the conical surface 5 and collapsible part 6 the second of stop outer shroud 3
Compress under the effect of the conical surface 8, the outer wall to centralizer body 1 is close, in the process, and constringency cleft 10 is tapered into, until two
Heel teeth groove 11 is at a fully engaged, and the first compression conical surface 5 of stop inner ring 2 and collapsible part 6 hold centralizer body 1 tightly, complete
It is fixed.
In the present embodiment, the stop outer shroud 3 and stop inner ring 2 are connected through a screw thread.
The material of stop inner ring 2 is spring steel.
This inclined bow centralizer device that the present embodiment is provided, changes the fixed structure of traditional centralizer locating snap ring, to set
Pipe is without any destruction, it is adaptable to which the oil gas horizontal well that well depth is complicated, horizontal segment is longer is used.It is simple in construction, install
Operation it is quick and convenient, with higher casing centering effect, be conducive to improve cementing quality.
The part and structure that above example is not described in detail belong to the well-known components and common structure or conventional of the industry
Means, are not described one by one here.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (9)
1. a kind of centralizer device of bow partially, it is characterised in that：Including centralizer body（1）, the centralizer body（1）Two ends
It is equipped with locating snap ring, the centralizer body（1）For hollow structure, including multiple brace rods being uniformly distributed circumferentially（4）, and
Two neighboring brace rod（4）Between have gap, the brace rod（4）For asymmetric inclined bow structure, and it is two neighboring it is asymmetric partially
The arcuate section of bow structure is staggeredly arranged.
2. a kind of centralizer device of bow partially according to claim 1, it is characterised in that：The locating snap ring includes stop inner ring
（2）With stop outer shroud（3）, the stop inner ring（2）With centralizer body（1）Two ends are connected, the stop outer shroud（3）It is set in
Stop inner ring（2）It is outer and both be fixedly connected.
3. a kind of centralizer device of bow partially according to claim 2, it is characterised in that：The stop inner ring（2）Including from
The compressible structure and the first pontes up to set gradually down（7）, the stop outer shroud（3）Including setting successively from top to bottom
The compressing structure and second connecting portion put point（9）, external diameter of the internal diameter less than compressible structure of the compressing structure, the stop
Outer shroud（3）With stop inner ring（2）Pass through the first pontes outside（7）Divide with second connecting portion（9）Connection.
4. a kind of centralizer device of bow partially according to claim 3, it is characterised in that：The compressible structure is by the first pressure
The tight conical surface（5）, collapsible part（6）, constringency cleft（10）Composition, described first compresses the conical surface（5）Located at stop inner ring（2）'s
Top, the collapsible part（6）The conical surface is compressed with first（5）Bottom connection, it is described first compress the conical surface（5）It is upper it is small under
Greatly；
The constringency cleft（10）The conical surface is compressed through first（5）With collapsible part（6）, the constringency cleft（10）It is circumferential equal
It is even to set multiple, compress the conical surface by first（5）With collapsible part（6）It is divided into many parts.
5. a kind of centralizer device of bow partially according to claim 3, it is characterised in that：The compressing structure is the second compression
The conical surface（8）, described second compresses the conical surface（8）Located at stop outer shroud（3）Top, described second compresses the conical surface（8）It is up-small and down-big.
6. a kind of centralizer device of bow partially according to claim 4, it is characterised in that：Described first compresses the conical surface（5）
The many part two ends being divided into are equipped with teeth groove（11）, each constringency cleft（10）The teeth groove at two ends（11）Matching.
7. one kind bow centralizer device partially according to claim any one of 2-6, it is characterised in that：The stop outer shroud
（3）With stop inner ring（2）It is connected through a screw thread.
8. one kind bow centralizer device partially according to claim any one of 2-6, it is characterised in that：The stop inner ring
（2）Material is spring steel.
9. a kind of centralizer device of bow partially according to claim 6, it is characterised in that：The stop inner ring（2）First
Compress the conical surface（5）With collapsible part（6）In stop outer shroud（3）Compressing structure effect under, to centralizer body（1）Outer wall
It is close, make constringency cleft（10）Taper into, until both sides teeth groove（11）It is at a fully engaged, stop inner ring（2）First compress cone
Face（5）With collapsible part（6）By centralizer body（1）Hold tightly, make centralizer body（1）It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462569.3A CN107130924A (en) | 2017-06-19 | 2017-06-19 | A kind of centralizer device of bow partially |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462569.3A CN107130924A (en) | 2017-06-19 | 2017-06-19 | A kind of centralizer device of bow partially |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107130924A true CN107130924A (en) | 2017-09-05 |
Family
ID=59735350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710462569.3A Pending CN107130924A (en) | 2017-06-19 | 2017-06-19 | A kind of centralizer device of bow partially |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107130924A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513067A (en) * | 2019-07-27 | 2019-11-29 | 山东四通石油技术开发有限公司 | A kind of righting casing blocks pipe |
| RU200072U1 (en) * | 2020-06-17 | 2020-10-05 | Управляющая компания общество с ограниченной ответственностью "ТМС групп" | Centralizer |
| CN112031677A (en) * | 2020-11-05 | 2020-12-04 | 胜利油田固邦石油装备有限责任公司 | Anti-deformation casing centralizer for oil exploitation |
| CN113446435A (en) * | 2021-07-30 | 2021-09-28 | 北京瑞一管道科技有限公司 | Steel cylinder with hoop for horizontal spiral drilling jacking machine pipe jacking |
| RU212375U1 (en) * | 2022-02-27 | 2022-07-19 | Общество с ограниченной ответственностью "НАБЕРЕЖНОЧЕЛНИНСКИЙ ТРУБНЫЙ ЗАВОД" | Spring centralizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4384626A (en) * | 1982-02-22 | 1983-05-24 | Smith International, Inc. | Clamp-on stabilizer |
| CN2851519Y (en) * | 2005-10-31 | 2006-12-27 | 新疆石油管理局钻井工艺研究院 | Hollow centralizer for casing |
| US20100252274A1 (en) * | 2009-04-07 | 2010-10-07 | Frank's International, Inc. | Friction reducing wear band and method of coupling a wear band to a tubular |
| CN102576990A (en) * | 2009-10-07 | 2012-07-11 | 胡默尔股份公司 | Cable gland for a shielded cable |
| CN202483550U (en) * | 2011-10-25 | 2012-10-10 | 西安威盛电子仪器有限公司 | Multi-arm spring type roller centralizer |
| CN203066893U (en) * | 2013-01-08 | 2013-07-17 | 四川省贝特石油技术有限公司 | Centering device for reaming well section |
| CN104471181A (en) * | 2012-07-12 | 2015-03-25 | Ace石油工具公司 | Device arranged for attaching a mandrel on a tubular body |
| CN206071480U (en) * | 2016-09-22 | 2017-04-05 | 中国石油集团渤海钻探工程有限公司第一固井分公司 | A kind of elastic centralizer |
| CN206972173U (en) * | 2017-06-19 | 2018-02-06 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of centralizer device of bow partially |
-
2017
- 2017-06-19 CN CN201710462569.3A patent/CN107130924A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4384626A (en) * | 1982-02-22 | 1983-05-24 | Smith International, Inc. | Clamp-on stabilizer |
| CN2851519Y (en) * | 2005-10-31 | 2006-12-27 | 新疆石油管理局钻井工艺研究院 | Hollow centralizer for casing |
| US20100252274A1 (en) * | 2009-04-07 | 2010-10-07 | Frank's International, Inc. | Friction reducing wear band and method of coupling a wear band to a tubular |
| CN102576990A (en) * | 2009-10-07 | 2012-07-11 | 胡默尔股份公司 | Cable gland for a shielded cable |
| CN202483550U (en) * | 2011-10-25 | 2012-10-10 | 西安威盛电子仪器有限公司 | Multi-arm spring type roller centralizer |
| CN104471181A (en) * | 2012-07-12 | 2015-03-25 | Ace石油工具公司 | Device arranged for attaching a mandrel on a tubular body |
| CN203066893U (en) * | 2013-01-08 | 2013-07-17 | 四川省贝特石油技术有限公司 | Centering device for reaming well section |
| CN206071480U (en) * | 2016-09-22 | 2017-04-05 | 中国石油集团渤海钻探工程有限公司第一固井分公司 | A kind of elastic centralizer |
| CN206972173U (en) * | 2017-06-19 | 2018-02-06 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of centralizer device of bow partially |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513067A (en) * | 2019-07-27 | 2019-11-29 | 山东四通石油技术开发有限公司 | A kind of righting casing blocks pipe |
| RU200072U1 (en) * | 2020-06-17 | 2020-10-05 | Управляющая компания общество с ограниченной ответственностью "ТМС групп" | Centralizer |
| CN112031677A (en) * | 2020-11-05 | 2020-12-04 | 胜利油田固邦石油装备有限责任公司 | Anti-deformation casing centralizer for oil exploitation |
| CN112031677B (en) * | 2020-11-05 | 2021-01-12 | 胜利油田固邦石油装备有限责任公司 | Anti-deformation casing centralizer for oil exploitation |
| CN113446435A (en) * | 2021-07-30 | 2021-09-28 | 北京瑞一管道科技有限公司 | Steel cylinder with hoop for horizontal spiral drilling jacking machine pipe jacking |
| RU212375U1 (en) * | 2022-02-27 | 2022-07-19 | Общество с ограниченной ответственностью "НАБЕРЕЖНОЧЕЛНИНСКИЙ ТРУБНЫЙ ЗАВОД" | Spring centralizer |
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Application publication date: 20170905 |