CN2786271Y - Centralizer arranged on hollow sucker rod joint stub - Google Patents
Centralizer arranged on hollow sucker rod joint stub Download PDFInfo
- Publication number
- CN2786271Y CN2786271Y CN 200520200076 CN200520200076U CN2786271Y CN 2786271 Y CN2786271 Y CN 2786271Y CN 200520200076 CN200520200076 CN 200520200076 CN 200520200076 U CN200520200076 U CN 200520200076U CN 2786271 Y CN2786271 Y CN 2786271Y
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- short circuit
- fairlead
- oil
- hollow sucker
- 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 hollow sucker rod centralizing joint stub integrating wax preventing and wear resisting as a whole, particularly a device integrating a hollow sucker rod joint stub and a guide centralizing block which is formed by processing materials, such as alloy aluminium, copper, etc. as a whole. The utility model has a good function of preventing the wear between a sucker rod and an oil conduit in the process of exploiting thick oil.
Description
Technical field:
The utility model relates to a kind of erection device that is used to be installed on the hollow rod short circuit, particularly is suitable for employed erection device when heavy crude producing.
Background technology:
Sucker rod pump is widely used in field of petroleum exploitation.This kind sucker rod pump is usually by being installed in ground oil pumper and being made up of sucker rod assembly, polished rod, oil pipe and the oil well pump etc. that are connected with this oil pumper.Described sucker rod assembly generally includes hollow rod and the box cupling that is used to be connected this hollow rod.Since oil reservoir apart from ground at least below several kms, and in-place oil liquid contains dopes such as paraffin, so, when utilizing this kind sucker rod pumping, often to need that all sucker rod is connected into km long for every mouthful of well, and need be arranged on oil pipe in the oil well and under the driving of oil pumper, constantly do and pump, be with piston in pump, also to do simultaneously and pump, so that crude oil can be thus lifted in ground container or the pipeline road in the stratum.The particularly development and application of directed extended reach well drilling new technology now makes that the gradient of oil well is bigger, has also strengthened the extrusion friction power between sucker rod assembly and the tube inner wall simultaneously, and this has aggravated the wearing and tearing of sucker rod assembly.
For the oil well of heavy crude producing, need inject a large amount of steam in oil well by hollow oil pipe heats it its heating or employing cable, and no matter adopt any mode of heating, all can between big bar of platform hole deviation degree and pipe, cause frictional resistance, and then cause between the two mutual wearing and tearing, in a single day the hollow stem that is connected with cable has mill and leaks phenomenon, will force oil well to stop production; On the other hand, the pumpingh well that gradient is bigger, its crooked position all are to connect by short circuit, and short circuit need be born bigger frictional resistance, and reinforcing short circuit is to prolong oil well the most simple and effective means in application life.
Summary of the invention:
Task of the present utility model provides the erection device on the hollow rod short circuit of being installed in that mode that a kind of utilization prevents short circuit wearing and tearing improves oil pipe and beam hanger application life.
The erection device that is installed on the hollow rod short circuit that the utility model proposed has the thin portion that an internal diameter is slightly larger than the short circuit central region, and less than the fairlead of the thick portion in short circuit two ends, and the external surface of this fairlead is provided with oil groove.
Oil groove on the described fairlead is along its axial screw formula setting.Described fairlead is made by wear-resisting metal alloy.
The erection device that is installed on the hollow rod short circuit that the utility model proposed only adopts a fairlead that can move freely along the middle part of short circuit, mode with the radial thickness by increasing short circuit improves its application life, and on the external surface of fairlead because of being provided with oil groove, and oil groove has the lead angle of certain angle, it can be along with the spiral rotation of direction of oil stream is risen, so, can not influence oil pumping because of increasing fairlead.
Description of drawings:
Accompanying drawing 1 is the surface structure schematic diagram of an embodiment of the utility model.
The specific embodiment:
Provide the overall appearance structure that is installed in the embodiment of erection device on the hollow rod short circuit that the utility model proposes referring to Fig. 1, this figure.Because existing sucker rod short circuit 1 two ends are threaded 11, and diameter is greater than its 12 zones, middle part.Described erection device 1 has a fairlead 2, and the internal diameter of this fairlead 2 is slightly larger than 12 zones, short circuit 1 middle part, and is threaded 11 position less than short circuit 1 two ends, so that fairlead 2 can move freely at the middle part of short circuit 1.On the external surface of fairlead 2 and be axially to be provided with oil groove 21 spiral or that have the lead angle of certain angle,, normally aspirates by oil groove 21 so that can not hindering crude oil along it.In order further to improve the performance such as wear-resistant of fairlead 2, this fairlead 2 can adopt wear-resisting metal alloy to make.
Claims (3)
1. be installed in the erection device on the hollow rod short circuit, it is characterized in that: this device has the thin portion that an internal diameter is slightly larger than the short circuit central region, and less than the fairlead of the thick portion in short circuit two ends, and the external surface of this fairlead is provided with oil groove.
2. erection device according to claim 1 is characterized in that: the oil groove on the described fairlead is along its axial screw formula setting.
3. erection device according to claim 1 and 2 is characterized in that: described fairlead is made by wear-resisting metal alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520200076 CN2786271Y (en) | 2005-02-04 | 2005-02-04 | Centralizer arranged on hollow sucker rod joint stub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520200076 CN2786271Y (en) | 2005-02-04 | 2005-02-04 | Centralizer arranged on hollow sucker rod joint stub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786271Y true CN2786271Y (en) | 2006-06-07 |
Family
ID=36774846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520200076 Expired - Fee Related CN2786271Y (en) | 2005-02-04 | 2005-02-04 | Centralizer arranged on hollow sucker rod joint stub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786271Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071445A (en) * | 2014-06-25 | 2014-10-01 | 杨海龙 | Thread protection cap and manufacturing method thereof |
-
2005
- 2005-02-04 CN CN 200520200076 patent/CN2786271Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071445A (en) * | 2014-06-25 | 2014-10-01 | 杨海龙 | Thread protection cap and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |