CN110043199A - A kind of centralizer - Google Patents
A kind of centralizer Download PDFInfo
- Publication number
- CN110043199A CN110043199A CN201910323828.3A CN201910323828A CN110043199A CN 110043199 A CN110043199 A CN 110043199A CN 201910323828 A CN201910323828 A CN 201910323828A CN 110043199 A CN110043199 A CN 110043199A
- Authority
- CN
- China
- Prior art keywords
- destressing
- slot
- gusset
- centralizer
- work
- 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
- 230000003447 ipsilateral effect Effects 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 10
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003208 petroleum Substances 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
- E21B17/1042—Elastomer protector or centering means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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 discloses a kind of centralizers, including the consistent top ring of diameter, lower loop；Several work gussets are connected between top ring and lower loop；Gusset work around the distribution of the even circumferential of top ring or lower loop；The width of work gusset is between 30~130mm；It further include several destressing slots.The present invention on the work gusset of different in width and gusset and end ring junction, opens up destressing slot according to actual use demand；These destressing slots provide stress deformation space to ontology elastic material when gusset is squeezed and deformed by extreme, are damaged so as to avoid ontology elastic material institutional framework or part is damaged.
Description
Technical field
The invention belongs to petroleum drilling and mining cementing equipment technical fields, and in particular to a kind of centralizer.
Background technique
The centralizer of casing in the wellbore is one of the determinant of oil gas well cementing operation quality, and centralizer is placed
Basis whether being casing centralization.Centralizer be for casing righting, guarantee the component of casing concentricity in the wellbore.It is different
The performance of type centralizer has different influences to the tripping in of casing and final centralizer, what current centralizer was easy to appear
Problem is work gusset by easy permanent deformation after big load, causes the reset force of spring-backed quill centralizer inadequate, causes
Casing is inadequate in wellbore centralizer when well cementation, reduces cementing quality, it is tight to will cause well cementation failure, oil gas string layer etc. when eccentric too big
Weight consequence.
Summary of the invention
The object of the present invention is to provide a kind of centralizers, solve centralizer existing in the prior art by big load
Afterwards, the easy permanent deformation of work gusset causes centralizer reset force inadequate, in the problem that wellbore centralizer is inadequate.
The technical scheme adopted by the invention is that a kind of centralizer, including the consistent top ring of diameter, lower loop；Upper end
Several work gussets are connected between ring and lower loop；Gusset work around the distribution of the even circumferential of top ring or lower loop；
The width of work gusset is between 30~130mm；It further include several destressing slots；The length of destressing slot is 20~100mm；It is wide
Degree is 1~5mm.
The features of the present invention also characterized in that:
Destressing slot is opened in work gusset.
The shape of destressing slot is lateral linear, longitudinal linear or arc-shaped.
Arc-shaped destressing slot positioned at work gusset lower part is arranged in herringbone.
The radius of arc-shaped destressing slot is R20~80mm.
The distance at destressing slot pitch ipsilateral work gusset edge is 10~20mm.
Work gusset and top ring, lower loop junction are also provided with several destressing slots, and top junction is gone to answer
The arrangement of power slot and the arrangement of lower part junction destressing slot are symmetrical.
The beneficial effects of the present invention are:
Centralizer of the present invention, according to actual use demand, on the work gusset of different in width and gusset and end ring connect
Place is met, destressing slot is opened up；Position, geomery and the quantity of destressing slot need to adjust according to specific operating condition, these go to answer
Power slot provides stress deformation space to ontology elastic material when gusset is squeezed and deformed by extreme, so as to avoid this body elasticity
Materials microstructure is damaged or part is damaged；Elastic centralizer reset force after the excessive load is avoided to decline
Subtract, maintains the design performance of elastic centralizer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of centralizer a of the present invention；
Fig. 2 is the structural schematic diagram of centralizer b of the present invention；
Fig. 3 is the structural schematic diagram of centralizer c of the present invention
Fig. 4 is the structural schematic diagram of centralizer d of the present invention
Fig. 5 is the structural schematic diagram of centralizer e of the present invention
Fig. 6 is the structural schematic diagram of centralizer f of the present invention
Fig. 7 is the structural schematic diagram of centralizer g of the present invention
Fig. 8 is the structural schematic diagram of centralizer h of the present invention
Fig. 9 is the structural schematic diagram of centralizer i of the present invention
Figure 10 is the structural schematic diagram of centralizer j of the present invention.
In figure, 1. top rings, 2. lower loops, 3. work gussets, 4. destressing slots.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, centralizer of the present invention, including the consistent top ring 1 of diameter, lower loop 2；Top ring 1 and lower loop 2
Between be connected with several work gussets 3；Gusset 3 work around the distribution of the even circumferential of top ring 1 or lower loop 2；Work muscle
The width of plate 3 is between 30~130mm；It further include several destressing slots 4.Destressing slot 4 is opened in work gusset 3.Destressing
The shape of slot 4 is lateral linear, longitudinal linear or arc-shaped.Arc-shaped destressing slot 4 positioned at 3 lower part of work gusset,
It is arranged in herringbone.The radius of arc-shaped destressing slot 4 is R20~80mm.Destressing slot 4 is away from ipsilateral 3 side of work gusset
The distance of edge is 10~20mm.The length of single destressing slot 4 is 20~100mm；Width is 1~5mm.
Specifically, destressing slot 4 is opened in the top of work gusset 3, lower part, and the arrangement of top destressing slot 4 is under
The arrangement of portion's destressing slot 4 is symmetrical；The shape of destressing slot 4 is lateral linear；It goes to answer positioned at 3 lower part of work gusset
Several rows, every row one is distributed in power slot 4；The distance between two adjacent row destressing slots 4 are consistent, are 10~40mm.
Embodiment 2
As shown in Fig. 2, roughly the same with embodiment 1, difference is only that: the shape of destressing slot 4 is longitudinal linear；Position
Several rows, the first behavior one is distributed in destressing slot 4 in work 3 lower part of gusset, and the longitudinal direction for being located at work gusset 3 is right
Claim axis；Second row is hereinafter, every a line has two, and this two destressing slots 4 are symmetrical, and symmetry axis and work gusset 3 are longitudinal
Symmetry axis is conllinear；Fore-and-aft distance between adjacent rows destressing slot 4 is consistent, is 10~40mm；Second row hereinafter, every row two
Lateral distance between destressing slot 4 is 20~100mm.
Embodiment 3
As shown in figure 3, roughly the same with embodiment 1, difference is only that: specifically, going to answer positioned at 3 lower part of work gusset
Power slot 4 is distributed with several rows, the first behavior one longitudinal direction linear destressing slot 4, and is located at the longitudinally asymmetric of work gusset 3
Axis；Second row is hereinafter, every a line has two, and this two destressing slots 4 are distributed in herringbone；Adjacent rows destressing slot 4 it
Between fore-and-aft distance, minimum 10mm is up to 40mm；Second row hereinafter, between two destressing slots 4 of every row laterally away from
From minimum 5mm is up to 30mm.
Embodiment 4
As shown in figure 4, roughly the same with embodiment 1, difference is only that: the destressing slot 4 positioned at 3 top of work gusset,
Several rows, the first behavior one transverse direction linear destressing slot 4 is distributed with；Second row is hereinafter, every a line has two, and this two
Destressing slot 4 is in the distribution of falling herringbone；4 end of the first row destressing slot is to the level between its second ipsilateral row stress slot 4
Distance is 5~20mm；Between the first row and the second row, fore-and-aft distance, minimum 10mm is up to 40mm；Second row is hereinafter, phase
Fore-and-aft distance between adjacent two row destressing slots 4 is or meets 10~40mm of formula, the cross between two destressing slots 4 of every row
To distance, minimum 5mm is up to 30mm.
Embodiment 5
As shown in figure 5, roughly the same with embodiment 4, difference is only that: it is vertical that 3 middle part of work gusset also offers several rows
To linear destressing slot 4；The first row and last line are one, and are located at the longitudinally asymmetric axis of work gusset 3；Remaining row,
Every a line has two, and this two destressing slots 4 are symmetrical, and symmetry axis is conllinear with the work longitudinally asymmetric axis of gusset 3；It is adjacent
Fore-and-aft distance between two row destressing slots 4 is 10~40mm；Even number line, between two destressing slots 4 of every row laterally away from
From meeting formula: L1=work gusset width -2 × (5~25)；Odd-numbered line, between two destressing slots 4 of every row laterally away from
From meeting formula: L2=work gusset width -2 × (5~15).
Embodiment 6
As shown in fig. 6, roughly the same with embodiment 1, difference is only that: work gusset 3 is connect with top ring 1, lower loop 2
Place is also provided with several destressing slots 4, and the arrangement of top junction destressing slot 4 and lower part junction destressing slot 4
Arrangement is symmetrical；The destressing slot 4 of lower part junction is arranged in isosceles triangle；The destressing slot 4 of isosceles triangle arrangement, individually goes
The shape of stress slot 4 is lateral linear.
Embodiment 7
As shown in fig. 7, roughly the same with embodiment 2, difference is only that: work gusset 3 is connect with top ring 1, lower loop 2
Place is also provided with several destressing slots 4, and the arrangement of top junction destressing slot 4 and lower part junction destressing slot 4
Arrangement is symmetrical；The destressing slot 4 of lower part junction is two longitudinal linear destressing slots 4, this two destressing slots 4 it
Between lateral distance be 20~100mm.
Embodiment 8
As shown in figure 8, roughly the same with embodiment 3, difference is only that: work gusset 3 is connect with top ring 1, lower loop 2
Place is also provided with several destressing slots 4, and the arrangement of top junction destressing slot 4 and lower part junction destressing slot 4
Arrangement is symmetrical；The destressing slot 4 of lower part junction is arranged in isosceles triangle；The destressing slot 4 of isosceles triangle arrangement, individually goes
The shape of stress slot 4 is arc-shaped.The radius of arc-shaped destressing slot 4 is R20~80mm.The destressing of isosceles triangle arrangement
Slot 4, the lateral distance between two destressing slots 4 of even number line are 20~80mm.
Embodiment 9
As shown in figure 9, roughly the same with embodiment 4, difference is only that: without transverse direction linear destressing slot 4；Work muscle
Plate 3 and top ring 1,2 junction of lower loop are also provided with several destressing slots 4, and the arrangement of top junction destressing slot 4
It is symmetrical with the arrangement of lower part junction destressing slot 4；The destressing slot 4 of lower part junction is arranged in isosceles triangle；Isosceles triangle
The destressing slot 4 of arrangement, the shape of single destressing slot 4 are arc-shaped.The radius of arc-shaped destressing slot 4 be R20~
80mm.The destressing slot 4 of isosceles triangle arrangement, the lateral distance between two destressing slots 4 of even number line are 20~80mm.
Embodiment 10
As shown in Figure 10, roughly the same with embodiment 5, difference is only that: without transverse direction linear destressing slot 4；Work
Gusset 3 and top ring 1,2 junction of lower loop are also provided with several destressing slots 4, and the row of top junction destressing slot 4
The arrangement of cloth and lower part junction destressing slot 4 is symmetrical；The destressing slot 4 of lower part junction is arranged in isosceles triangle；Product word
The destressing slot 4 of shape arrangement, the shape of single destressing slot 4 are arc-shaped.The radius of arc-shaped destressing slot 4 is R20
~80mm.The destressing slot 4 of isosceles triangle arrangement, the lateral distance between two destressing slots 4 of even number line are 20~80mm.
Test data comparison:
It is compared according to above-mentioned test data, discovery has the product gusset outer diameter of destressing slot to reduce seldom, stiffness
It is obviously better than no destressing slot product.
Centralizer of the present invention, according to actual use demand, on the work gusset of different in width and gusset and end ring connect
Place is met, destressing slot is opened up；Position, geomery and the quantity of destressing slot need to adjust according to specific operating condition, these go to answer
Power slot provides stress deformation space to ontology elastic material when gusset is squeezed and deformed by extreme, so as to avoid this body elasticity
Materials microstructure is damaged or part is damaged；Elastic centralizer reset force after the excessive load is avoided to decline
Subtract, maintains the design performance of elastic centralizer.
Claims (7)
1. a kind of centralizer, it is characterised in that: including the consistent top ring of diameter (1), lower loop (2)；Top ring (1) and lower end
Several work gussets (3) are connected between ring (2)；Work gusset (3) is equal around the circumference of top ring (1) or lower loop (2)
Even distribution；The width of work gusset (3) is between 30~130mm；It further include several destressing slots (4)；The length of destressing slot (4)
Degree is 20~100mm；Width is 1~5mm.
2. centralizer as described in claim 1, it is characterised in that: the destressing slot (4) is opened in work gusset (3).
3. centralizer as claimed in claim 2, it is characterised in that: the shape of the destressing slot (4) is lateral linear, indulges
To linear or arc-shaped.
4. centralizer as claimed in claim 3, it is characterised in that: the arc-shaped of work gusset (3) lower part that is located at goes to answer
Power slot (4) is arranged in herringbone.
5. centralizer as claimed in claim 4, it is characterised in that: the radius of the arc-shaped destressing slot (4) is R20
~80mm.
6. centralizer as claimed in claim 5, it is characterised in that: the destressing slot (4) is away from ipsilateral work gusset (3) edge
Distance be 10~20mm.
7. centralizer as claimed in claim 6, it is characterised in that: the work gusset (3) and top ring (1), lower loop (2)
Junction is also provided with several destressing slots (4), and the arrangement of top junction destressing slot (4) goes to answer with lower part junction
The arrangement of power slot (4) is symmetrical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323828.3A CN110043199B (en) | 2019-04-22 | 2019-04-22 | Centralizer |
| PCT/CN2019/100517 WO2020215534A1 (en) | 2019-04-22 | 2019-08-14 | Centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323828.3A CN110043199B (en) | 2019-04-22 | 2019-04-22 | Centralizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110043199A true CN110043199A (en) | 2019-07-23 |
| CN110043199B CN110043199B (en) | 2020-10-02 |
Family
ID=67278400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910323828.3A Active CN110043199B (en) | 2019-04-22 | 2019-04-22 | Centralizer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110043199B (en) |
| WO (1) | WO2020215534A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215534A1 (en) * | 2019-04-22 | 2020-10-29 | 陕西纽兰德实业有限公司 | Centralizer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11965384B2 (en) | 2021-03-24 | 2024-04-23 | Downhole Products Limited | Variable stiffness centralizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030230411A1 (en) * | 2002-06-18 | 2003-12-18 | Richard Bennett M. | Expandable centralizer for downhole tubulars |
| CN202810657U (en) * | 2012-08-22 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Spiral redressing and expanding tool |
| EP2578796A3 (en) * | 2007-05-16 | 2014-08-27 | Frank's International, Inc. | Expandable centralizer for expandable pipe string |
| CN204552637U (en) * | 2015-04-21 | 2015-08-12 | 陕西纽兰德实业有限公司 | A kind of spring-backed quill centralizer |
| CN205654310U (en) * | 2016-05-31 | 2016-10-19 | 陕西纽兰德实业有限公司 | Reinforcement type spring -backed quill centralizer |
| CN205654308U (en) * | 2016-05-31 | 2016-10-19 | 陕西纽兰德实业有限公司 | Bow -shaped spring -backed quill centralizer |
| CN205654309U (en) * | 2016-05-31 | 2016-10-19 | 陕西纽兰德实业有限公司 | Resistance to deformation spring -backed quill centralizer |
| CN209838334U (en) * | 2019-04-22 | 2019-12-24 | 陕西纽兰德实业有限公司 | Anti-fatigue elastic casing centralizer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9127514B2 (en) * | 2012-12-10 | 2015-09-08 | Tesco Corporation | Bladder type crimper |
| CN106223869A (en) * | 2016-08-26 | 2016-12-14 | 天津德瑞克石油工具有限公司 | A kind of centralizer being suitable for multiple sleeve pipe |
| CN110043199B (en) * | 2019-04-22 | 2020-10-02 | 陕西纽兰德实业有限公司 | Centralizer |
-
2019
- 2019-04-22 CN CN201910323828.3A patent/CN110043199B/en active Active
- 2019-08-14 WO PCT/CN2019/100517 patent/WO2020215534A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030230411A1 (en) * | 2002-06-18 | 2003-12-18 | Richard Bennett M. | Expandable centralizer for downhole tubulars |
| EP2578796A3 (en) * | 2007-05-16 | 2014-08-27 | Frank's International, Inc. | Expandable centralizer for expandable pipe string |
| CN202810657U (en) * | 2012-08-22 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Spiral redressing and expanding tool |
| CN204552637U (en) * | 2015-04-21 | 2015-08-12 | 陕西纽兰德实业有限公司 | A kind of spring-backed quill centralizer |
| CN205654310U (en) * | 2016-05-31 | 2016-10-19 | 陕西纽兰德实业有限公司 | Reinforcement type spring -backed quill centralizer |
| CN205654308U (en) * | 2016-05-31 | 2016-10-19 | 陕西纽兰德实业有限公司 | Bow -shaped spring -backed quill centralizer |
| CN205654309U (en) * | 2016-05-31 | 2016-10-19 | 陕西纽兰德实业有限公司 | Resistance to deformation spring -backed quill centralizer |
| CN209838334U (en) * | 2019-04-22 | 2019-12-24 | 陕西纽兰德实业有限公司 | Anti-fatigue elastic casing centralizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020215534A1 (en) * | 2019-04-22 | 2020-10-29 | 陕西纽兰德实业有限公司 | Centralizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110043199B (en) | 2020-10-02 |
| WO2020215534A1 (en) | 2020-10-29 |
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