CN202181860U - Underground axial force bearing device for sucker rod of screw pump well - Google Patents
Underground axial force bearing device for sucker rod of screw pump well Download PDFInfo
- Publication number
- CN202181860U CN202181860U CN2011203192113U CN201120319211U CN202181860U CN 202181860 U CN202181860 U CN 202181860U CN 2011203192113 U CN2011203192113 U CN 2011203192113U CN 201120319211 U CN201120319211 U CN 201120319211U CN 202181860 U CN202181860 U CN 202181860U
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- roller bearing
- hollow shaft
- support ring
- axial force
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims description 10
- 210000002445 nipple Anatomy 0.000 claims description 5
- 238000011084 recovery Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
A bearing device for the underground axial force of sucker rod of screw pump well. The main rod pipe eccentric wear's of solving current screw pump well problem. The method is characterized in that: the upper end of the outer sleeve (1) is provided with a threaded joint connected with an oil pipe column, the hollow shaft (2) sequentially passes through the roller bearing (4), the positioning spacer ring (5), the ball bearing (3), the positioning spacer ring (5) and the roller bearing (4) and is connected in the outer sleeve (1), the lower end roller bearing (4) is externally provided with a support ring (6) below the hollow shaft (2), a piston (7) is arranged in a sealed cavity between the support ring (6) and the outer sleeve (1), the lower end of the outer sleeve (1) is connected with an oil pipe joint (8) through threads and pins, the upper end of the oil pipe joint (8) is in contact with the lower end of the support ring (6), and a spline sleeve (9) at the lower end of the hollow shaft. The underground axial force bearing device of the screw pump well sucker rod can greatly reduce the eccentric wear phenomenon of the rod pipe.
Description
Technical field
The utility model relates to the used rod tube of oil recovery field, oil field screw bolt well anti-eccentric wear device, especially screw bolt well sucker rod down-hole axial force bogey.
Background technology
The oil recovery field in the oil field, screw pump obtains widespread usage.And the rod and tube partial-wear of screw bolt well is more serious, and in order to solve the rod and tube partial-wear problem of screw bolt well, widespread usage is used two centralizers, and two centralizer can not effectively prevent eccentric wear, influences the screw bolt well oil recovery efficiency.
Summary of the invention
In order to solve the problem of the rod and tube partial-wear that has screw bolt well now.The utility model provides a kind of screw bolt well sucker rod down-hole axial force bogey.This screw bolt well sucker rod down-hole axial force bogey can significantly reduce the rod and tube partial-wear phenomenon.
The technical scheme of the utility model is: this screw bolt well sucker rod down-hole axial force bogey comprises overcoat, hollow shaft, ball bearing, roller bearing, location spacer ring, support ring, piston, oil connection, spline housing and sucker rod butt joint.There is the nipple that links to each other with tubing string outer set upper side; Hollow shaft is connected in the overcoat through roller bearing, location spacer ring, ball bearing, location spacer ring and roller bearing successively; Hollow shaft is equipped with support ring outward under the roller bearing of lower end, and the closed chamber between support ring and the overcoat is built-in with piston, and the overcoat lower end is connected with oil connection through screw thread and pin; Touch in the support ring lower end mutually the oil connection upper end, and the spline housing of hollow shaft lower end is connected with the sucker rod butt joint through spline.
The utlity model has following beneficial effect: this screw bolt well sucker rod down-hole axial force bogey is owing to adopt outer set upper side that the nipple that links to each other with tubing string is arranged; Hollow shaft is connected in the overcoat through roller bearing, location spacer ring, ball bearing, location spacer ring and roller bearing successively; Hollow shaft is equipped with support ring outward under the roller bearing of lower end; Closed chamber between support ring and the overcoat is built-in with piston; The overcoat lower end is connected with oil connection through screw thread and pin, and the oil connection upper end is touched in the support ring lower end structure that the spline housing of hollow shaft lower end is connected with the sucker rod butt joint through spline mutually.During screw pump work, sucker rod rotates, and the drive screw pump rotor rotates and recovers the oil.The axial force of screw pump rotor is born by this screw bolt well sucker rod down-hole axial force bogey, passes on the tubing anchor at last and passes on the sleeve pipe.2 sucker rods between this screw bolt well sucker rod down-hole axial force bogey and screw pump rotor are equivalent to flexible axle, can dissolve rotor eccentricity and rotate.The centrifugal force that produces is born by screw pump, and the sucker rod on this axial force bogey top, screw bolt well sucker rod down-hole is coaxial rotation in oil pipe, does not have centrifugal force, and under the protection of oil pumping rod centering device, its wearing and tearing will reduce greatly.This screw bolt well sucker rod down-hole axial force bogey can significantly reduce the rod and tube partial-wear phenomenon thus.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model.
1-overcoat among the figure, the 2-hollow shaft, the 3-ball bearing, the 4-roller bearing, 5-locatees spacer ring, 6-support ring, 7-piston, 8-oil connection, 9-spline housing, the butt joint of 10-sucker rod.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 1, this screw bolt well sucker rod down-hole axial force bogey comprises overcoat 1, hollow shaft 2, ball bearing 3, roller bearing 4, location spacer ring 5, support ring 6, piston 7, oil connection 8, spline housing 9 and sucker rod butt joint 10.There is the nipple that links to each other with tubing string overcoat 1 upper end, and nipple is used for linking to each other with tubing string.Hollow shaft 2 is connected in the overcoat 1 through roller bearing 4, location spacer ring 5, ball bearing 3, location spacer ring 5 and roller bearing 4 successively; Bear axial load by ball bearing 3; Roller bearing 4 is used for along with sucker rod rotates, and location spacer ring 5 is used for fixing ball bearing 3 and roller bearing 4.Be equipped with support ring 6 outside 4 times hollow shafts of lower end roller bearing 2, support ring 6 is used for fixing roller bearing 4.Closed chamber between support ring 6 and the overcoat 1 is built-in with piston 7, and piston 7 is used to seal support ring 6 and overcoat 1.Overcoat 1 lower end is connected with oil connection 8 through screw thread and pin, and touch in support ring 6 lower ends mutually oil connection 8 upper ends, and oil connection 8 is used for linking to each other with tubing string.The spline housing 9 of hollow shaft 2 lower ends is connected with sucker rod butt joint 10 through spline, and sucker rod butt joint 10 is used to connect sucker rod, makes sucker rod be easy to be connected and carry the lifting moment of torsion in the down-hole with this device through spline housing 9 and spline.
During actual the use; The overcoat 1 of this screw bolt well sucker rod down-hole axial force bogey is connected on the screw pump apart from up and down between the oil pipe of 2 sucker rod positions of screw pump; Sucker rod butt joint 10 is connected with sucker rod simultaneously; Make sucker rod only bear moment of torsion and self gravitation, and then eliminate the vibrations that the screw pump rotor eccentric rotary produces.
The key technology point of this screw bolt well sucker rod down-hole axial force bogey is the selection of ball bearing 3 and roller bearing 4, and ball bearing 3 should require bearing load to reach more than 5 tons again in the certain size scope, reaches application life more than 2 years; Roller bearing 4 is to be used for eliminating the vibrations that the screw pump rotor eccentric rotary produces simultaneously along with sucker rod rotates., producing fluid level identical in parameter is when 500m, and this screw bolt well sucker rod down-hole axial force bogey can reduce sucker rod axial force 15.43KN, and moment of torsion increases little; Can guarantee ordinary production; Prolong pump detection period length more than 1 year, reduce the influence of oil production simultaneously, prolong pump detection period.
Claims (1)
1. screw bolt well sucker rod down-hole axial force bogey; Comprise overcoat (1), hollow shaft (2), ball bearing (3), roller bearing (4), location spacer ring (5), support ring (6), piston (7), oil connection (8), spline housing (9) and sucker rod butt joint (10); It is characterized in that: there is the nipple that links to each other with tubing string overcoat (1) upper end; Hollow shaft (2) is connected in the overcoat (1) through roller bearing (4), location spacer ring (5), ball bearing (3), location spacer ring (5) and roller bearing (4) successively; Lower end roller bearing (4) is the outer support ring (6) that is equipped with of hollow shaft (2) down; Closed chamber between support ring (6) and the overcoat (1) is built-in with piston (7); Overcoat (1) lower end is connected with oil connection (8) through screw thread and pin, and touch in support ring (6) lower end mutually oil connection (8) upper end, and the spline housing (9) of hollow shaft (2) lower end is connected with sucker rod butt joint (10) through spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203192113U CN202181860U (en) | 2011-08-29 | 2011-08-29 | Underground axial force bearing device for sucker rod of screw pump well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203192113U CN202181860U (en) | 2011-08-29 | 2011-08-29 | Underground axial force bearing device for sucker rod of screw pump well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202181860U true CN202181860U (en) | 2012-04-04 |
Family
ID=46174902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203192113U Expired - Fee Related CN202181860U (en) | 2011-08-29 | 2011-08-29 | Underground axial force bearing device for sucker rod of screw pump well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202181860U (en) |
-
2011
- 2011-08-29 CN CN2011203192113U patent/CN202181860U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120404 Termination date: 20190829 |