CN201059256Y - Long plunger type sand-proof oil-well pump - Google Patents
Long plunger type sand-proof oil-well pump Download PDFInfo
- Publication number
- CN201059256Y CN201059256Y CNU2007200227716U CN200720022771U CN201059256Y CN 201059256 Y CN201059256 Y CN 201059256Y CN U2007200227716 U CNU2007200227716 U CN U2007200227716U CN 200720022771 U CN200720022771 U CN 200720022771U CN 201059256 Y CN201059256 Y CN 201059256Y
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- China
- Prior art keywords
- sand
- oil
- pump
- well pump
- oil well
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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 - Fee Related
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Abstract
The utility model relates to an oil well pump, in particular to a long plunger type sand control oil well pump. The technical proposal of the utility model is that: the oil well pump mainly comprises a long plunger, a short pump barrel, a lengthened inner cylinder, an interval channel body, an outer cylinder body, an upper oil outlet valve, a lower oil outlet valve and an oil inlet valve, wherein, the short pump barrel and the lengthened inner cylinder are arranged inside the outer cylinder body; the upper oil outlet valve and the lower oil outlet valve are respectively arranged on both ends of the short pump barrel; the oil inlet valve is arranged on the lower end of the lengthened inner cylinder; a fluid cavity is arranged between the short pump barrel and the lengthened inner cylinder and communicated with the interval channel body arranged on the side face of the outer cylinder body. The utility model has the advantages that: entry of sands into the sealing clearance between the pump barrel and the plunger can be effectively prevented, thereby the oil well pump has the characteristics of sand jamming resistance, sand burying resistance, sand grind resistance, abrasion resistance, long service life and so on, and the maintenance-free period of an oil well can be greatly prolonged. Under the condition that an oil layer is not buried by sands, sand carrying production can be realized and the service life of the oil well pump is 3 to 5 times longer than a general pump. The utility model is a more advanced domestic oil well pump at present suitable for sand production oil wells.
Description
One, technical field:
The utility model relates to a kind of oil well pump, particularly a kind of long-plunger formula sand-proof oil-well pump.
Two, background technique:
The oil-containing geologic structure in the many oil fields of China is more loose, and it is more to contain sand in the well liquid, adopts the conventional pumps oil pumping that sand card, sand milling and corrosion often take place, and makes the oil well pump premature failure, causes oil well to stop production, and operation is frequent, and the cost of production of crude oil improves; The sand controlling result of existing sand-proof oil-well pump is not satisfactory and working life short.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and the long-plunger formula sand-proof oil-well pump that a kind of sand controlling result is good and working life is long is provided.
Its technological scheme is: mainly be made up of long-plunger, short pump barrel, lengthening inner core, runner body, outer cylinder body, upper and lower outlet valve and oiling valve; Be provided with short pump barrel and lengthening inner core in the described outer cylinder body, the two ends of short pump barrel are respectively equipped with upper and lower outlet valve, the lower end of lengthening inner core is provided with oiling valve, and described short pump barrel and lengthening have fluid cavity between the inner core, and is connected with fluid road that the outer cylinder body side is provided with.
The beneficial effects of the utility model are: prevent that effectively sand grains from entering the seal clearance between pump barrel and the plunger, characteristics such as therefore have that sand control card, sand control bury, anti-sand milling, corrosion protection, life-span are long can prolong oil well repair free period widely.Bury under the situation of oil reservoir at sand not, can realize taking sand production, its working life is longer 3～5 times than conventional pumps, is the at present domestic advanced oil well pump that is applicable to sand well.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Five, embodiment:
In conjunction with the accompanying drawings, the utility model will be further described:
Mainly form by long-plunger 3, short pump barrel 2, lengthening inner core 4, runner body 7, lower contact 8, outer cylinder body 9, upper and lower outlet valve 1,5 and oiling valve 6; Be provided with short pump barrel 2 and lengthening inner core 4 in the described outer cylinder body 9, the two ends of short pump barrel 2 are respectively equipped with upper and lower outlet valve 1,5, the lower end of lengthening inner core 4 is provided with oiling valve 6, and described short pump barrel 2 and lengthening have fluid cavity between the inner core 4, and is connected with fluid road 7 that outer cylinder body 9 sides are provided with.
The working principle of its sand control card is exactly the acting in conjunction by sand retaining ring and lost fluid, and the prevention sand grains enters the seal clearance between plunger and the pump barrel, thereby has stopped the sand card, has alleviated the wearing and tearing of pump barrel and plunger, and it is destroyed that surface strengthen layer is difficult for.When bumping off a well, the sand grains of sinking sinks to tail pipe under the pump along the sand setting annular space, can not resemble to build up on pump the conventional pumps, has avoided sand to bury sucker rod.
The using method of this pump is similar to conventional pumps, and its difference is: need connect dark sand pocket under the pump, the sand setting pocket is the tubing string of one section bottom band sealing plug.
Claims (1)
1. a long-plunger formula sand-proof oil-well pump is characterized in that: mainly be made up of long-plunger (3), short pump barrel (2), lengthening inner core (4), runner body (7), outer cylinder body (9), upper and lower outlet valve (1,5) and oiling valve (6); Be provided with short pump barrel (2) and lengthening inner core (4) in the described outer cylinder body (9), the two ends of short pump barrel (2) are respectively equipped with upper and lower outlet valve (1,5), the lower end of lengthening inner core (4) is provided with oiling valve (6), between described short pump barrel (2) and lengthening inner core (4) fluid cavity is arranged, and be connected with fluid road (7) that outer cylinder body (9) side is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200227716U CN201059256Y (en) | 2007-06-05 | 2007-06-05 | Long plunger type sand-proof oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200227716U CN201059256Y (en) | 2007-06-05 | 2007-06-05 | Long plunger type sand-proof oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201059256Y true CN201059256Y (en) | 2008-05-14 |
Family
ID=39407725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200227716U Expired - Fee Related CN201059256Y (en) | 2007-06-05 | 2007-06-05 | Long plunger type sand-proof oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201059256Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562542A (en) * | 2010-12-29 | 2012-07-11 | 中船重工中南装备有限责任公司 | Sand-preventing scale-preventing oil well pump with long plunger piston |
-
2007
- 2007-06-05 CN CNU2007200227716U patent/CN201059256Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562542A (en) * | 2010-12-29 | 2012-07-11 | 中船重工中南装备有限责任公司 | Sand-preventing scale-preventing oil well pump with long plunger piston |
| CN102562542B (en) * | 2010-12-29 | 2015-09-02 | 中船重工中南装备有限责任公司 | Sand-preventing scale-preventing oil well pump with long plunger piston |
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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: 20080514 |