CN205936435U - Self-lubricating spiral centralizer for sucker rod - Google Patents
Self-lubricating spiral centralizer for sucker rod Download PDFInfo
- Publication number
- CN205936435U CN205936435U CN201620527290.XU CN201620527290U CN205936435U CN 205936435 U CN205936435 U CN 205936435U CN 201620527290 U CN201620527290 U CN 201620527290U CN 205936435 U CN205936435 U CN 205936435U
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- China
- Prior art keywords
- centralizer
- sucker rod
- main body
- spiral
- lubricating
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 239000004519 grease Substances 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000004663 powder metallurgy Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 12
- 238000005299 abrasion Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a self-lubricating spiral centralizer of a sucker rod, which comprises an upper joint, a main body and a lower joint, wherein two ends of the main body are respectively connected with the upper joint and the lower joint; the body is provided with the centralizer outward, the centralizer is cylindrical helix form, and the spiral direction is the levogyration, and spiral angle 45, and spiral portion middle is thicker than both ends. The central holes of the upper joint and the lower joint are internally distributed with female threads of the sucker rod, and the surface of the central holes is a layer of powder alloy. The main body is made of alloy steel 35 CrMoA. The centralizer is located the main part outside from top to bottom is the heliciform. Lubricating grease, carbon powder or solid graphite is injected into the small holes distributed on the centralizer. The utility model relates to a spiral sucker rod centralizer connects on the sucker rod, reduces among the oil recovery process sucker rod and oil pipe inner wall wearing and tearing, and the body of rightting plays the effect of rightting to rightting the body and being the face contact with the oil pipe inner wall, reduced contact stress, the body life is right in the extension, uses in specially adapted directional well, the horizontal well.
Description
Technical field
This utility model is related to oil recovery machiner field, is a kind of sucker rod centralising wear-proofing instrument particularly to a kind of sucker rod
Self-lubricating spiral centering device.
Background technology
During sucker rod pumping, sucker rod moves back and forth in oil pipe, and R a T can not in relative motion
Avoid presence abrasion, particularly directional well and inclined shaft, sucker rod in oil pipe be easier occur flexural deformation, sucker rod and
Tubing wall occurs friction to cause oil pipe or sucker rod abrasion, damage, and when serious, sucker rod generation is disconnected de-, is difficult to beat after entering oil pipe
Drag for, affect production efficiency, for this reason, people connect centralizer on sucker rod, oil pumping rod centering device will have rub resistance, corrosion-resistant
Feature, it is contacted with tube inner wall, play sucker rod stabilizing and protection oil pipe, sucker rod, extend the oil well production cycle mesh
's.
At present, conventional oil pumping rod centering device mainly has rolling wheel centralizer, nylon centralising device, two-way protective coupling etc..Rolling
Although that takes turns centralizer can be changed into rolling friction by the sliding friction between tube rod, reduce coefficient of friction, the rolling of rolling wheel centralizer
Wheel is easily stuck on steady pin, leads to roller to rotate dumb；Nylon centralising device is by forming solid lubrication with metal surface
Avoid wearing and tearing to reach reduction friction, but nylon centralising device heat resistance is poor, its bulk material abrasion simultaneously is very fast, down-hole work
Make the life-span shorter it is impossible to avoid completely tube rod abrasion occur.Two-way protective coupling outer surface is sprayed with solid lubricant, reduces
Coefficient of friction between tube rod, but it is different from tube inner wall curvature, each other for linear contact, contact pressure larger it is impossible to have
Effect prevents tube rod abrasion from occurring.
China Patent Publication No.：200610150627.0 disclosing a kind of double-rotary sucker rod centering guide, this centralizer
Two ends are the sliding friction between tube rod can be changed into rolling friction with the centralizer of left rotation and right rotation, reduce coefficient of friction, with helping
The abrasion of positive device, also increases the risk of trouble of lost tool in hole.
China Patent Publication No.：CN201567974U, there is provided " a kind of oil pumping rod centering device ".Outside oil pumping rod centering device
Circular surfaces are coated with the highly corrosion resistant alloy coat that material is Ni60A；The outer round surface of described oil pumping rod centering device is provided with spiral
Type groove.The service life of rod-pumped well tube rod can be increased, reduce the workload of oil well pump detection and workover, reduce cost for oil production.
Utility model content
In order to overcome the problem that existing friction is serious, damage, utility model provides a kind of sucker rod self-lubricating spiral righting
Device, can ensure that sucker rod during underground work, it is to avoid occur friction to cause oil pipe or sucker rod abrasion, damage with oil pipe.
The technical solution adopted in the utility model is：
A kind of sucker rod self-lubricating spiral centering device, including top connection, main body and lower contact, described main body two ends are respectively
It is connected with top connection and lower contact；It is provided with centralizer, described centralizer is cylindrical screw wire, the hand of spiral outside described main body
For left-handed, 45 ° of spiral angle and thicker than two in the middle of spire.
The center in the hole of described top connection and lower contact is furnished with sucker rod box thread, and surface is one layer of powder metallurgy.
Described main body adopts steel alloy 35CrMoA.
It is evenly distributed with aperture on the whole outer surface of described centralizer.
The little in the hole being furnished with described centralizer is marked with grease, carbon dust or solid graphite.
Described centralizer is linked together by injection and main body, and centralizer is wrapped in outside main body.
The recess taking spanner is left on described lower contact.
The beneficial effects of the utility model are：
A kind of screw pumping rod centralizer of this utility model, is connected on sucker rod, reduce oil recovery process in sucker rod with
Tube inner wall weares and teares, and righting physical ability plays centralizing function, and centralizer body is contacted for face with tube inner wall, and reducing contact should
Power, extends centralizer body service life, is particularly well-suited to directional well, uses in horizontal well.
It is further detailed below with reference to accompanying drawing.
Brief description
Fig. 1 sucker rod spiral centering device structure chart.
In figure, reference：1st, top connection；2nd, main body；3rd, centralizer；4th, recess；5th, lower contact.
Specific embodiment
Embodiment 1：
In order to overcome the problem that existing friction is serious, damage, this utility model provides a kind of sucker rod as shown in Figure 1 certainly
Lubricating screw centralizer, can ensure that sucker rod during underground work, it is to avoid occur friction to cause oil pipe or oil pumping with oil pipe
Bar abrasion, damage.
A kind of sucker rod self-lubricating spiral centering device, including top connection 1, main body 2 and lower contact 5, described main body 2 two ends
It is connected with top connection 1 and lower contact 5 respectively；It is provided with centralizer 3, described centralizer 3 is circular helix outside described main body 2
Shape, the hand of spiral is left-handed, 45 ° of spiral angle, and thicker than two in the middle of spire.
A kind of sucker rod self-lubricating spiral centering device that this utility model provides, by top connection 1, main 2 bodies, centralizer 3, under
Joint 5 forms.Top connection 1, main body 2, lower contact 5 are integral type structure, and main body adopts steel alloy 35CrMoA, it is possible to increase take out
The comprcssive strength of beam centralizer, increases the service life, and top connection 1 and lower contact 5 center in the hole are furnished with sucker rod box thread, table
Face is one layer of powder metallurgy, plays wear-and corrosion-resistant antifriction, and the centralizer 3 of main body periphery adopts highstrenghtpiston's alloy, Jing Guobiao
Face senses from molten process, has higher wearability and anti-corrosive properties, the Rotation Design of centralizer 3 uniqueness and ultra-wide than ordinary connector
Rotating vane can be more stable increase contact area, design provides bigger by-pass flow passage, can play guiding, reduce and rub
Deng effect, centralizer 3 is furnished with aperture, the material such as in the hole injection grease, carbon dust and solid graphite is it is ensured that centralizer 3 is complete
Self-lubricating, the effect of reducing friction resistance is all played in life cycle.
A kind of screw pumping rod centralizer of this utility model, is connected on sucker rod, reduce oil recovery process in sucker rod with
Tube inner wall weares and teares, and centralizer 3 can play centralizing function, and centralizer 3 is contacted for face with tube inner wall, and reducing contact should
Power, extends centralizer service life, is particularly well-suited to directional well, uses in horizontal well.
In this utility model, the rotating vane of the unique Rotation Design of the oil pumping rod centering device of design and ultra-wide is rotating part,
Increase contact area that can be more stable.
Embodiment 2：
On the basis of embodiment 1, in the present embodiment, the center in the hole of described top connection 1 and lower contact 5 is furnished with oil pumping
Bar box thread, surface is one layer of powder metallurgy.
Described main body 2 adopts steel alloy 35CrMoA.
Top connection 1 is fixedly connected with sucker rod by female thread with lower contact 5, and connection screw thread executes standard：SY/T5029-
2006, leave recess 4 at lower contact 5, convenient wrench loads and unloads screw pumping rod centralizer.
Described centralizer 3 passes through injection and main body 2 links together, and centralizer 3 is wrapped in outside main body 2.
Described centralizer 3 is located at outside main body 2 from top to bottom in the shape of a spiral.
It is evenly distributed with aperture on the whole outer surface of described centralizer 3.
The little in the hole being furnished with described centralizer 3 is marked with grease, carbon dust or solid graphite.
Centralizer 3 adopts highstrenghtpiston's alloy, through surface induction from molten process, higher more resistance to than ordinary connector has
Mill property and anti-corrosive properties, the increase contact area that the Rotation Design of centralizer 3 uniqueness and the rotating vane of ultra-wide can be more stable, if
Meter provides bigger by-pass flow passage, can play guiding, reduce the effect such as friction.
Aperture is furnished with centralizer 3, the material such as in the hole injection grease, carbon dust and solid graphite is it is ensured that centralizer 3 is complete
Self-lubricating, the effect of reducing friction resistance is all played in life cycle.
It is furnished with aperture on centralizer 3.So provide bigger by-pass flow passage, meanwhile, main body 2 adopts import steel alloy
35CrMoA material can play the effect of long term wear.
The recess 4 taking spanner is left on described lower contact 5.According to different oil pipes, its size has described recess 4
22.23mm, 25.40mm, 33.34mm, 38.1mm, easy to disassemble.
The only illustration to the present invention exemplified as above, does not constitute the restriction to protection scope of the present invention, all
It is that same or analogous design belongs within protection scope of the present invention with the present invention.The portion of the present embodiment not narration in detail
Part, structures and methods belong to well-known components and common structure or the conventional means of the industry, do not describe one by one here.
Claims (7)
1. a kind of sucker rod self-lubricating spiral centering device it is characterised in that：Including top connection（1）, main body（2）, and lower contact
（5）, described main body（2）Two ends respectively with top connection（1）And lower contact（5）Connect；Described main body（2）It is provided with outward centralizer
（3）, described centralizer（3）For cylindrical screw wire, the hand of spiral is left-handed, 45 ° of spiral angle, and compares two in the middle of spire
Thick.
2. a kind of sucker rod self-lubricating spiral centering device according to claim 1 it is characterised in that：Described top connection（1）
And lower contact（5）Center in the hole be furnished with sucker rod box thread, surface is one layer of powder metallurgy.
3. a kind of sucker rod self-lubricating spiral centering device according to claim 1 it is characterised in that：Described main body（2）Adopt
Use steel alloy 35CrMoA.
4. a kind of sucker rod self-lubricating spiral centering device according to claim 1 it is characterised in that：Described centralizer（3）
It is evenly distributed with aperture on whole outer surface.
5. a kind of sucker rod self-lubricating spiral centering device according to claim 4 it is characterised in that：Described centralizer（3）
On the little in the hole that is furnished be marked with grease, carbon dust or solid graphite.
6. a kind of sucker rod self-lubricating spiral centering device according to claim 1 it is characterised in that：Described centralizer（3）
By injection and main body（2）Link together, centralizer（3）It is wrapped in main body（2）Outside.
7. a kind of sucker rod self-lubricating spiral centering device according to claim 1 it is characterised in that：Described lower contact（5）
On leave the recess taking spanner（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620527290.XU CN205936435U (en) | 2016-06-02 | 2016-06-02 | Self-lubricating spiral centralizer for sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620527290.XU CN205936435U (en) | 2016-06-02 | 2016-06-02 | Self-lubricating spiral centralizer for sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936435U true CN205936435U (en) | 2017-02-08 |
Family
ID=57932678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620527290.XU Active CN205936435U (en) | 2016-06-02 | 2016-06-02 | Self-lubricating spiral centralizer for sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936435U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100557A (en) * | 2017-06-15 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
| WO2021087577A1 (en) * | 2019-11-08 | 2021-05-14 | Cobalt Extreme Pty Ltd | Equipment for mining |
-
2016
- 2016-06-02 CN CN201620527290.XU patent/CN205936435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100557A (en) * | 2017-06-15 | 2017-08-29 | 贵州省地质矿产勘查开发局111地质大队 | Spiral wing centralizer for air down-the-hole hammer |
| WO2021087577A1 (en) * | 2019-11-08 | 2021-05-14 | Cobalt Extreme Pty Ltd | Equipment for mining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |