CN201588565U - Screw pump well sucker rod centralizer - Google Patents
Screw pump well sucker rod centralizer Download PDFInfo
- Publication number
- CN201588565U CN201588565U CN2010201310500U CN201020131050U CN201588565U CN 201588565 U CN201588565 U CN 201588565U CN 2010201310500 U CN2010201310500 U CN 2010201310500U CN 201020131050 U CN201020131050 U CN 201020131050U CN 201588565 U CN201588565 U CN 201588565U
- Authority
- CN
- China
- Prior art keywords
- centralizing
- screw pump
- positive cover
- supporting positive
- sucker rod
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a screw pump well sucker rod centralizer, which is composed of a centralizing body and a centralizing sleeve, wherein fuel tube screw threads are provided at both ends of the centralizing sleeve; the centralizing body perforates the centralizing sleeve, the centralizing body is in clearance fit with the centralizing sleeve, a fuel liquid flowing channel which the fuel liquid can pass through is provided in the centralizing sleeve; the centralizing body is in screwed connection with the pumping rod below the centralizing body. During operation of the utility model, as the gap between the centralizing body and the centralizing sleeve is very small, the affection of the screw pump eccentricity to the pumping rod above the centralizing body is greatly decreased, namely the affection objects of the screw pump eccentricity are changed from original integral bolt to only several pumping rod at lower part of the centralizing body, to resolve the problem that the central line of the screw pump rotor always has an eccentricity from the central line of the stator when the rotor rotates, to cause the swing and vibrating problem when the entire sucker rod rotates.
Description
One, technical field:
The utility model relates to the sucker rod erection device that uses in the oil well, specifically is screw pump well pumping rod centering device.
Two, background technology:
Screw pump is as a kind of mechanical oil recovery equip ment, and it has the irreplaceable superiority of other pumping unit, such as it be applicable to heavy oil wells, contain sand, the exploitation of high-gas-contained well; Its volume is little, and is easy for installation, pollution-free, energy consumption is low.These characteristics makes it be easy to promote, and in recent years, the application scale of screw pump enlarges year by year, and development is more and more faster.
The screw pump oil production technology comprises that surface driving part, down-hole part and rod tube a series of comprehensive technologys such as set upright, and any a part of imperfection all can have influence on the efficient and the application life of whole extracting device of oil.Screw pump is made up of rotor and stator, and surface drive drives the sucker rod rotation, and sucker rod is connected with the screw pump rotor that is installed in the shaft bottom, thus the rotation of drive screw pump rotor.But the screw pump rotor center line has an eccentric throw all the time with the stator center line when rotated, because the existence of this eccentric throw, during the sucker rod rotation, making sucker rod is that rotation is again around the revolution of stator center line, there is influence in the whole roofbolt of sucker rod, again screw pump is caused adverse effect thus, mainly as follows:
1, sucker rod promptly has rotation that revolution is arranged again, has caused the swing and the vibration of sucker rod, and causes the vibration of pump, influences pump efficiency.
2, influence the life-span of sucker rod.Because sucker rod periodically swings, vibrates, make sucker rod be subjected to tensile, compressive, bending, the effect of various power such as turn round, it is tired that sucker rod is produced, and shortens its application life.
3, influence the life-span of oil pipe.The swing of sucker rod, vibration cause collision and wearing and tearing between the R a T, shorten the application life of R a T.
4, influence the application life of screw pump.The oil pumping vibration of bar makes the rubber in the stator be subjected to periodic bump, and rubber and bonding agent fatiguability were lost efficacy.
Three, summary of the invention:
The purpose of this utility model provides a kind of screw pump well pumping rod centering device, this screw pump well pumping rod centering device is used for solving that its center line has an eccentric throw with the stator center line all the time when rotate because of screw pump rotor, thereby causes the problem of swinging and vibrating when causing whole pumping rod rotate.
The technical scheme that its technical problem that solves the utility model adopts is: this screw pump well pumping rod centering device is made of centralizer body and supporting positive cover, and there is tubing round thread at the supporting positive cover two ends; Centralizer body passes supporting positive cover, and centralizer body and supporting positive cover matched in clearance are provided with the liquid flow channel for oil that fluid can pass through in the supporting positive cover; Centralizer body is threaded with the sucker rod of its underpart.
Centralizer body is solid in the such scheme, and its upper and lower side all has internal thread, and the liquid flow channel for oil in the supporting positive cover is an axial pass trough.
Centralizer body is hollow in the such scheme, and all there is internal thread at two ends, and its upper end is provided with fluid hole, and the lower end is provided with inlet opening; Liquid flow channel for oil in the supporting positive cover is an axial pass trough.Because of hollow centralizer body thereon, down two ends be provided with out, inlet opening, can prevent effectively that the centralizer friction is overheated, under the situation that size and intensity allow, preferably make hollow.
Beneficial effect:
During the utility model work, because centralizer body and supporting positive cover gap are very little, make the above sucker rod of centralizer body reduced greatly by the influence of screw pump eccentric throw, just the screw pump eccentric throw only becomes influence to several sucker rods in centralizer body bottom by the influence to original whole roofbolt.
Four, description of drawings:
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the sectional view of supporting positive cover among Fig. 1;
Fig. 3 is the structural representation of the another kind of embodiment of the utility model;
Fig. 4 is an A-A sectional view among Fig. 3.
1 supporting positive cover, 2 centralizer bodies, 3 liquid flow channel for oil, 4 fluid holes, 5 inlet openings
Five, the specific embodiment:
Fig. 1 is the structural representation of a kind of embodiment of the utility model, in conjunction with shown in Figure 2, this screw pump well pumping rod centering device is made of centralizer body 2 and supporting positive cover 1, and there is tubing round thread at supporting positive cover 1 two ends, its upper end is connected with tubing round thread, and its lower end is threaded with oil pipe or screw pump stator; Centralizer body 2 passes supporting positive cover 1, and centralizer body 2 is very little with supporting positive cover 1 gap, is axially arranged with the liquid flow channel for oil 3 that fluid can pass through in the supporting positive cover 1, and this liquid flow channel for oil 3 is an axial pass trough; Centralizer body 2 is solid, and its upper and lower side all has internal thread, and centralizer body 2 is threaded with the sucker rod of its underpart.When underground work supporting positive cover 1 is connected position appropriate more than the screw pump stator, centralizer body 2 is connected on the sucker rod, its position will guarantee that supporting positive cover 1 is enclosed within on the centralizer body 2 fully when screw pump moves.
In conjunction with Fig. 3, shown in Figure 4, this screw pump well pumping rod centering device and difference shown in Figure 1 are that centralizer body 2 is hollow, and its upper end is provided with fluid hole 4, and the lower end is provided with inlet opening 5, and other structure is identical with embodiment shown in Figure 1.
Claims (3)
1. screw pump well pumping rod centering device is characterized in that: this screw pump well pumping rod centering device is made of centralizer body (2) and supporting positive cover (1), and there is tubing round thread at supporting positive cover (1) two ends; Centralizer body (2) passes supporting positive cover (1), and centralizer body (2) and supporting positive cover (1) matched in clearance are provided with the liquid flow channel for oil (3) that fluid can pass through in the supporting positive cover (1); Centralizer body (2) is threaded with the sucker rod of its underpart.
2. screw pump well pumping rod centering device according to claim 2 is characterized in that: described centralizer body (2) is solid, and its upper and lower side all has internal thread, and the liquid flow channel for oil (3) in the supporting positive cover (1) is an axial pass trough.
3. screw pump well pumping rod centering device according to claim 2 is characterized in that: described centralizer body (2) is hollow, and all there is internal thread at two ends, and its upper end is provided with fluid hole (4), and the lower end is provided with inlet opening (5); Liquid flow channel for oil (3) in the supporting positive cover (1) is an axial pass trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201310500U CN201588565U (en) | 2010-01-31 | 2010-01-31 | Screw pump well sucker rod centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201310500U CN201588565U (en) | 2010-01-31 | 2010-01-31 | Screw pump well sucker rod centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588565U true CN201588565U (en) | 2010-09-22 |
Family
ID=42748343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201310500U Expired - Fee Related CN201588565U (en) | 2010-01-31 | 2010-01-31 | Screw pump well sucker rod centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588565U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074475A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Sucker rod centralizer for full metal screw pump lifting |
| CN107587869A (en) * | 2017-07-28 | 2018-01-16 | 中国石油天然气股份有限公司 | A kind of underground real-time gas current divider and system for liquid producing profile log |
-
2010
- 2010-01-31 CN CN2010201310500U patent/CN201588565U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074475A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Sucker rod centralizer for full metal screw pump lifting |
| CN107587869A (en) * | 2017-07-28 | 2018-01-16 | 中国石油天然气股份有限公司 | A kind of underground real-time gas current divider and system for liquid producing profile log |
| CN107587869B (en) * | 2017-07-28 | 2021-03-19 | 中国石油天然气股份有限公司 | Underground real-time gas flow divider and system for liquid production profile logging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Daqing hi tech Development Co., Ltd. Assignor: Fu Changsheng Contract record no.: 2011230000015 Denomination of utility model: Screw pump well sucker rod centralizer with bidirectional protection effect Granted publication date: 20100922 License type: Exclusive License Record date: 20110425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20130131 |