CN202926227U - Destabilization-prevention oil pipe compensator - Google Patents
Destabilization-prevention oil pipe compensator Download PDFInfo
- Publication number
- CN202926227U CN202926227U CN 201220649993 CN201220649993U CN202926227U CN 202926227 U CN202926227 U CN 202926227U CN 201220649993 CN201220649993 CN 201220649993 CN 201220649993 U CN201220649993 U CN 201220649993U CN 202926227 U CN202926227 U CN 202926227U
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- Prior art keywords
- pipe
- oil pipe
- suspended tubes
- interior
- destabilization
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- 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 - Lifetime
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Abstract
The utility model relates to a destabilization-prevention oil pipe compensator. The destabilization-prevention oil pipe compensator comprises an upper joint, an outer hanging pipe, sliding seal rings, an anti-rotating dowel and an inner hanging pipe, wherein an outer reduction table shoulder of the inner hanging pipe is hung on an inner reduction table shoulder of the outer hanging pipe, the sliding seal rings are mounted at the upper part of the inner hanging pipe, the lower part of the upper joint is connected with the upper part of the outer hanging pipe, and the anti-rotating dowel is mounted at the lower part of the outer hanging pipe; a column face below the outer reduction table shoulder of the inner hanging pipe is milled into a plane, and the inner end of the anti-rotating dowel props against the plane milled on the inner hanging pipe, so that the inner hanging pipe and the outer hanging pipe only can axially move and cannot relatively rotate; and the destabilization-prevention oil pipe compensator is mounted on an oil pumping pipe column, the stretching vibration and the buckling caused by instability under pressure of an oil pipe are released, and the stability of the oil pipe is improved, so that the problems of eccentric wear and damage of a sucker rod and the oil pipe caused by the buckling of the oil pipe due to instability can be prevented, and the destabilization-prevention oil pipe compensator has a remarkable economic effect.
Description
Technical field
The utility model is the oil production equipment of petroleum industry, is a kind of anti-unstability oil pipe compensator.
Background technology
In sucker-rod pumping system, when sucker rod drive oil well pump pumps oil pumping, fluid column load alternating action is on sucker rod, oil pipe, sucker rod, oil pipe are subject to the effect of fluctuating load, the effect of fluctuating load makes bottom sucker rod, oil pipe extension vibration pressurized unstability crooked, and this is that operating principle by oil well pump determines.After the bending of oil pipe unstability, produce very large contact with sucker rod, serious sucker rod and oil pipe eccentric wear problem appear, after producing eccentric wear, oil pipe and sucker rod can not be used, cause oil well operation, oil well repair free period is short, increase operating cost, increase rod tube consumption, the oil well off-time is many, reduces crude output; After the bending of oil pipe unstability, also can cause the eccentric wear problem between oil pipe external surface and sleeve pipe.Also do not solve at the scene at present the technical measures of oil pipe unstability bending.
Summary of the invention
The purpose of this utility model is a kind of anti-unstability oil pipe compensator of design, avoids oil pipe unstability in sleeve pipe crooked, prevents sucker rod and oil pipe eccentric wear.
the purpose of this utility model is achieved in that and comprises top connection, outer suspended tubes, sliding ring, the anti-rotation pin, interior suspended tubes, the outer reducing shoulder of interior suspended tubes is suspended on the interior reducing shoulder of outer suspended tubes, sliding ring is installed on interior suspended tubes top, the top connection bottom is connected with outer suspended tubes top, the anti-rotation pin is installed in outer suspended tubes bottom, cylinder facing cut under the outer reducing shoulder of interior suspended tubes becomes the plane, the inner end of anti-rotation pin withstands on the plane of milling out on interior suspended tubes, make between interior suspended tubes and outer suspended tubes and can only move axially and relatively to rotate.
Under the external screw thread of top connection, static sealing ring is installed, static sealing ring contacts with outer suspended tubes inwall.
The beneficial effects of the utility model are: be arranged on pumping pipe string, the bending of oil pipe extension vibration pressurized unstability is discharged, the stability of oil pipe improves, thereby can prevent the problem of sucker rod that the bending of oil pipe unstability causes and the damage of oil pipe eccentric wear, has significant economic benefit.
Description of drawings
Fig. 1 is the assembling drawing of the utility model embodiment.
Fig. 2 is the profile after cutting open from A-A in Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
as seen from the figure, embodiment of the present utility model comprises top connection 1, static sealing ring 2, outer suspended tubes 3, sliding ring 4, anti-rotation pin 5, interior suspended tubes 6, the outer reducing shoulder of interior suspended tubes 6 is suspended on the interior reducing shoulder of outer suspended tubes 3, sliding ring 4 is installed on interior suspended tubes 6 tops, top connection 1 bottom is connected with outer suspended tubes 3 tops, anti-rotation pin 5 is installed in outer suspended tubes 3 bottoms, cylinder facing cut under the outer reducing shoulder of interior suspended tubes 6 becomes the plane, the inner end of anti-rotation pin 5 withstands on the plane of milling out on interior suspended tubes 6, make between interior suspended tubes 6 and outer suspended tubes 3 and can only move axially and relatively to rotate, static sealing ring 2 is installed under the external screw thread of top connection 1, static sealing ring 2 contacts with outer suspended tubes 3 inwalls, make top connection 1 and outer suspended tubes 3 connection of thread sealings.
The effect of anti-rotation pin 5 is to make the oil pipe transmitting torque, carries out technical operation when being convenient to workover treatment, can mutually stretch between outer suspended tubes 3 and interior suspended tubes 6, but can not separate under the interior reducing shoulder effect of the outer reducing shoulder of interior suspended tubes 6 and outer suspended tubes 3.
Claims (2)
1. anti-unstability oil pipe compensator, comprise top connection (1), outer suspended tubes (3), sliding ring (4), anti-rotation pin (5), interior suspended tubes (6), it is characterized in that: the outer reducing shoulder of interior suspended tubes (6) is suspended on the interior reducing shoulder of outer suspended tubes (3), sliding ring (4) is installed on interior suspended tubes (6) top, top connection (1) bottom is connected with outer suspended tubes (3) top, anti-rotation pin (5) is installed in outer suspended tubes (3) bottom, cylinder facing cut under the outer reducing shoulder of interior suspended tubes (6) becomes the plane, the inner end of anti-rotation pin (5) withstands on the plane of milling out on interior suspended tubes (6), make between interior suspended tubes (6) and outer suspended tubes (3) and can only move axially and relatively to rotate.
2. anti-unstability oil pipe compensator according to claim 1, it is characterized in that: static sealing ring (2) is installed under the external screw thread of top connection (1), and static sealing ring (2) contacts with outer suspended tubes (3) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220649993 CN202926227U (en) | 2012-12-02 | 2012-12-02 | Destabilization-prevention oil pipe compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220649993 CN202926227U (en) | 2012-12-02 | 2012-12-02 | Destabilization-prevention oil pipe compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926227U true CN202926227U (en) | 2013-05-08 |
Family
ID=48216200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220649993 Expired - Lifetime CN202926227U (en) | 2012-12-02 | 2012-12-02 | Destabilization-prevention oil pipe compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926227U (en) |
-
2012
- 2012-12-02 CN CN 201220649993 patent/CN202926227U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |