CN201170075Y - Abrasion-proof type packer - Google Patents
Abrasion-proof type packer Download PDFInfo
- Publication number
- CN201170075Y CN201170075Y CNU2008200891275U CN200820089127U CN201170075Y CN 201170075 Y CN201170075 Y CN 201170075Y CN U2008200891275 U CNU2008200891275 U CN U2008200891275U CN 200820089127 U CN200820089127 U CN 200820089127U CN 201170075 Y CN201170075 Y CN 201170075Y
- Authority
- CN
- China
- Prior art keywords
- packing
- expander
- oil
- wearing layer
- 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 provides a packing for a slick rod sealing device of an oil extraction well opening of an oil field. The packing mainly solves a problem that the prior packing is single in material and is not wearable. The packing is characterized in that a wearable layer (2) is arranged on the outer side of an inner layer expanding body (1). The packing has a characteristic of good wearability, and can be widely applied to the sealing operation of oil extraction well opening sealing devices and slick rods of the oil field.
Description
Technical field:
The utility model relates to the device of a kind of oil field rod pumping system, especially the packing used of wellhead polish rod sealer.
Background technology:
At present, rod pumping system is the main force of oil well production in China oil field, and wellhead polish rod sealer is absolutely necessary in rod pumping system, and wherein the structure of packing, performance are one of key factors of decision sealing effectiveness quality.Oil-extractor polish-rod is when operation, because the decentraction of horse head and well head when moving up and down certain swing and off-centre can take place.Existing packing adopts the packing body to add the structure of nylon rope mostly, and material is single, and is not wear-resisting, and application life is only at 2 months, and can not reduce rapidly because of oil-extractor polish-rod radially wobbles the instantaneous gap of causing, and easily causes well head to reveal.On the one hand frequent shutdown is changed packing, has both increased cost of production, reduces production efficiency, influences oil well output, brings certain hidden danger to safety work again, on the other hand environment is caused to a certain degree pollution.
The utility model content:
In order to overcome existing packing material deficiency single, not wear-resisting, that easily cause well head to reveal, the utility model provides a kind of wear-resisting formula packing, and characteristics wear-resisting, that elastoplasticity is good that this packing has have been avoided the well head leakage.
The technical solution of the utility model is: the external side of this packing inner layer expansion has wearing layer.On oil well, when moving up and down, oil-extractor polish-rod can produce certain swing and off-centre, frictional force when outer wearing layer effectively resists polished rod and moves up and down, the elastoplasticity of inner layer expansion body has alleviated the wearing and tearing of polished rod to packing, and rapidly oil-extractor polish-rod is implemented instantaneous gap and replenish, alleviated the well head leakage.
The expander that above-mentioned expander can be circular expander body, square expander, be made up of several expanded core; Wearing layer is stained with paraffin or butter, can weave winding, wrap up, is embedded in the expander outside.
The utlity model has following beneficial effect: owing to take such scheme, the expander outside has wearing layer, wearing layer to be stained with paraffin or butter, reduced and polished rod between friction factor, make packing more wear-resisting; The better elastoplasticity of inner layer expansion body can be replenished the gap that it produced when polished rod is swung, avoided the well head leakage, prolonged useful life, life-span can reach 6 months, reduced the number of times of oil well replacing packing, can save the field produces cost, increase output, alleviate environment pollution again.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is that the utility model expander cross section is square structural representation;
Accompanying drawing 3 is that the utility model expander is the structural representation that a plurality of expanded core are formed.
1-expander among the figure, 2-wearing layer, 3-expanded core.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, there is wearing layer 2 in circular expander body 1 outside; By shown in Figure 2, there is wearing layer 2 in square expander 1 outside; By shown in Figure 3, there is wearing layer 2 in expander 1 outside of being made up of side by side several expanded core 3.
Described wearing layer 2 can be that braiding is wrapped in expander 1 outside; Can be wrapped in expander 1 outside; Also can be embedded in expander 1 outside.
During actual the use, oil-extractor polish-rod moves up and down, wearing layer 2 and polished rod friction, and wearing layer 2 is stained with paraffin or butter, has reduced the friction factor between packing and polished rod, in addition because the abrasion resistance of wearing layer 2 itself makes packing more wear-resisting; When polished rod radially wobbles or takes place certain when eccentric; the elastoplasticity of expander 1 can be replenished it to the gap that polished rod produced; avoided the well head leakage; and alleviated the eccentric wear of polished rod to packing; thereby improve the application life of packing, reduced number of times and the time of oil well, can save the field produces cost because of the shutdown changing packing and cause; increase output, alleviated environment pollution again.
Claims (7)
1, a kind of packing comprises expander (1), it is characterized in that: there is wearing layer (2) in expander (1) outside.
2, packing according to claim 1 is characterized in that: expander (1) is formed side by side for several expanded core (3).
3, packing according to claim 2 is characterized in that: expanded core (3) is at least 2.
4, packing according to claim 1 is characterized in that: the cross section of expander (1) is for circular.
5, packing according to claim 1 is characterized in that: the cross section of expander (1) is square.
6, packing according to claim 2 is characterized in that: the cross section of expanded core (3) is for circular.
7, packing according to claim 2 is characterized in that: the cross section of expanded core (3) is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200891275U CN201170075Y (en) | 2008-01-21 | 2008-01-21 | Abrasion-proof type packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200891275U CN201170075Y (en) | 2008-01-21 | 2008-01-21 | Abrasion-proof type packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170075Y true CN201170075Y (en) | 2008-12-24 |
Family
ID=40209128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200891275U Expired - Fee Related CN201170075Y (en) | 2008-01-21 | 2008-01-21 | Abrasion-proof type packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170075Y (en) |
-
2008
- 2008-01-21 CN CNU2008200891275U patent/CN201170075Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20100221 |