CN201193608Y - Screw pump for deviated and horizontal wells - Google Patents
Screw pump for deviated and horizontal wells Download PDFInfo
- Publication number
- CN201193608Y CN201193608Y CNU2008200172633U CN200820017263U CN201193608Y CN 201193608 Y CN201193608 Y CN 201193608Y CN U2008200172633 U CNU2008200172633 U CN U2008200172633U CN 200820017263 U CN200820017263 U CN 200820017263U CN 201193608 Y CN201193608 Y CN 201193608Y
- Authority
- CN
- China
- Prior art keywords
- screw pump
- housing
- horizontal well
- inclined shaft
- progressive cavity
- 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
- 239000002775 capsule Substances 0.000 claims abstract description 7
- 230000000750 progressive effect Effects 0.000 claims description 11
- 238000005461 lubrication Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a screw pump used in deviated well and horizontal well, essentially comprising a screw pump casing, a rotor and the like, which is characterized in that the underside of the screw pump casing is connected with a housing, the lower end of the screw pump rotor inside the housing is sequentially connected and provided with an universal thrust shaft, a parallel thrust bearing and a balance capsule. The universal thrust shaft and the parallel bearing structure of the utility model has excellent eccentric wear prevention characteristic, which can be widely applied to straight wells, deviated wells and horizontal wells in petroleum exploitation.
Description
One, technical field
The utility model relates to pump, particularly a kind of progressive cavity pump that can be used for the inclined shaft horizontal well.
Two, background technique
Existing traditional progressive cavity pump mainly is made up of rod string and screw pump stator, rotor, in petroleum production, has very important effect, but it also exists inevitable side-abrasion of rod string problem simultaneously, and especially the wearing and tearing of pipe bar are particularly serious on inclined shaft and horizontal well.As everyone knows, screw pump is when oil pumping, its rotor can produce very big axial force, rod string has very big pulling force again, in inclined shaft and horizontal well, will produce sizable side pressure at the turning of rod tube, cause the pipe bar to produce wearing and tearing inevitably, cause bar to break, manage and leak very soon, can't produce, thereby traditional screw pump can't use on inclined shaft, horizontal well.
Three, summary of the invention
The purpose of this utility model provides a kind of improved progressive cavity pump that can be used for the inclined shaft horizontal well, the one universal anti-deflection device that wears down is installed below screw pump, changed the stress of sucker rod, make to safety, long lifetime progressive cavity pump on straight well, inclined shaft, horizontal well, use the shortcoming or the deficiency that overcome effectively or avoided existing in the above-mentioned prior art again.
The progressive cavity pump that can be used for the inclined shaft horizontal well described in the utility model, mainly comprise screw pump shell and rotor etc., be connected with housing under the described screw pump shell, housing inner screw pump rotor lower end connects in turn and universal thrust axis, parallel thrust-bearing and balance capsule is installed.
Wherein, the housing at described balance capsule place is provided with pressure compensation opening.Described housing lower end is closed or Open architecture.Described parallel thrust-bearing upper end is equipped with the lip packing that seals mutually with universal thrust axis and housing, constitutes balance lubrication and seal system.
The utility model has following advantage compared with prior art:
1, applied range not only is used for straight well, also can be used for inclined shaft and horizontal well.
2, adopt the device that wears down of universal thrust axis and thrust-bearing in parallel, anti-eccentric wear superior performance.
3, screw rod long service life.
Four, description of drawings
Accompanying drawing is a kind of structural representation of the present utility model.
Five, embodiment
Consult accompanying drawing, a kind of progressive cavity pump that can be used for the inclined shaft horizontal well, mainly comprise screw pump shell and rotor etc., the screw pump shell is connected with housing 3 for 1 time, and housing inner screw pump rotor 8 lower ends connect in turn and universal thrust axis 2, parallel thrust-bearing 5 and balance capsule 6 be installed.
The housing 3 at balance capsule 6 places is provided with pressure compensation opening 7.Housing 3 lower ends are closed or Open architecture.Parallel thrust-bearing 5 upper ends are equipped with the lip packing 4 that seals mutually with universal thrust axis 2 and housing 3, constitute balance lubrication and seal system.
Claims (4)
1. progressive cavity pump that can be used for the inclined shaft horizontal well, mainly comprise screw pump shell and rotor etc., it is characterized in that being connected with housing under the described screw pump shell, housing inner screw pump rotor lower end connects in turn and universal thrust axis, parallel thrust-bearing and balance capsule is installed.
2. the progressive cavity pump that can be used for the inclined shaft horizontal well according to claim 1 is characterized in that the housing at described balance capsule place is provided with pressure compensation opening.
3. the progressive cavity pump that can be used for the inclined shaft horizontal well according to claim 1 and 2 is characterized in that described housing lower end is closed or Open architecture.
4. the progressive cavity pump that can be used for the inclined shaft horizontal well according to claim 1 is characterized in that described parallel thrust-bearing upper end is equipped with the lip packing that seals mutually with universal thrust axis and housing, constitutes balance lubrication and seal system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200172633U CN201193608Y (en) | 2008-01-26 | 2008-01-26 | Screw pump for deviated and horizontal wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200172633U CN201193608Y (en) | 2008-01-26 | 2008-01-26 | Screw pump for deviated and horizontal wells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193608Y true CN201193608Y (en) | 2009-02-11 |
Family
ID=40393144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200172633U Expired - Fee Related CN201193608Y (en) | 2008-01-26 | 2008-01-26 | Screw pump for deviated and horizontal wells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193608Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174646A (en) * | 2011-12-20 | 2013-06-26 | 重庆明珠机电有限公司 | Tip support device used in single screw pump |
| CN106122003A (en) * | 2016-08-10 | 2016-11-16 | 姜经志 | Suspended load device |
-
2008
- 2008-01-26 CN CNU2008200172633U patent/CN201193608Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174646A (en) * | 2011-12-20 | 2013-06-26 | 重庆明珠机电有限公司 | Tip support device used in single screw pump |
| CN106122003A (en) * | 2016-08-10 | 2016-11-16 | 姜经志 | Suspended load device |
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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: Shandong Dadonglian Petroleum Equipment Co., Ltd. Assignor: Ma Aimin Contract fulfillment period: 2009.9.16 to 2019.8.1 Contract record no.: 2009370000421 Denomination of utility model: Screw pump for deviated and horizontal wells Granted publication date: 20090211 License type: Exclusive license Record date: 20091012 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.9.16 TO 2019.8.1; CHANGE OF CONTRACT Name of requester: SHANDONG DADONGLIAN PETROLEUM EQUIPMENT CO., LTD. Effective date: 20091012 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20110126 |