CN202370814U - Gas bag type liquid-gas oil well pump - Google Patents
Gas bag type liquid-gas oil well pump Download PDFInfo
- Publication number
- CN202370814U CN202370814U CN2011205066030U CN201120506603U CN202370814U CN 202370814 U CN202370814 U CN 202370814U CN 2011205066030 U CN2011205066030 U CN 2011205066030U CN 201120506603 U CN201120506603 U CN 201120506603U CN 202370814 U CN202370814 U CN 202370814U
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- gas bag
- pump
- gas
- liquid
- pump barrel
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Abstract
The utility model discloses a gas bag type liquid-gas oil well pump. The gas bag type liquid-gas oil well pump comprises a pump cylinder assembly, wherein a plunger assembly is arranged in the pump cylinder assembly; and the pump cylinder assembly comprises a short pump cylinder, a gas bag, a long pump cylinder and a standing valve which are sequentially connected from top to bottom. The hollow gas bag is arranged between the long pump cylinder and the short pump cylinder. The lifting working principle of the oil well pump is the same as that of an ordinary pump, wherein in the up stroke of a pumping unit, the lower end of a plunger passes through the hollow gas bag, and gas is separated from a well liquid and is filled in the gas bag due to the density difference of the gas and the liquid and an instantaneous pressure release effect caused by the enlargement of a cavity, so that the fullness degree of the liquid in the pump is increased; and in the down stroke, the upper end of the plunger passes through the hollow gas bag so as to expose the gas bag, and the gas in the gas bag is released to jack the liquid to move upwards, so that the density of the liquid in an oil pipe is reduced, and polished rod loads are reduced.
Description
Technical field
The utility model relates to oil well pump, specifically a kind of gas bag formula liquid gas oil well pump that is used for the oil well of oil field high gas-oil ratio (HGOR).
Background technique
The oil well pump of field use is a kind of positive displacement pump.When in the production fluid of oil well during gassiness, can reduce the full level of liquid in oil well pump, cause the keying of pump valve to lag behind, pump efficiency descends.The gas prevention pump of using at present, structural type is had nothing in common with each other, but all is to be purpose to improve traveling valve keying speed, fails to realize the raising of liquid full level in pump, and it is little that pump efficiency promotes amplitude.
In view of this, to the problems referred to above, propose a kind of reasonable in design and effectively improve the gas bag formula liquid gas oil well pump of above-mentioned disappearance.
Summary of the invention
The purpose of the utility model is to provide a kind of gas bag formula liquid gas oil well pump; This oil well pump adopts the fabricated structure of long and short pump barrel and gas bag; For gas provides space and passage in pump, not only improved the full level of liquid in pump, realized the normal keying of traveling valve; And, reduced the lifting load because of the mixing of liquid gas.
In order to reach above-mentioned purpose, the utility model provides a kind of gas bag formula liquid gas oil well pump, comprises the pump barrel assembly; Said pump barrel assembly set inside has plunger piston assembly, and said pump barrel assembly comprises short pump barrel, gas bag, long pump barrel and the standing valve that from top to bottom is connected in turn.
The said inner plunger piston assembly of pump barrel assembly that is arranged on is made up of upper travelling valve and lower travelling valve that two ends about plunger and the plunger connect.
It is same horizontal position with short pump barrel that said upper travelling valve particular location is located at short pump barrel inside; The plunger medium position of said gas bag between short pump barrel and long pump barrel; It is same horizontal position with long pump barrel that said lower travelling valve particular location is located at long pump barrel inside.
The two ends up and down of said pump barrel assembly are connected with upper connection and lower contact respectively.
Compared to existing technology, the utility model is installed hollow gas bag between long and short pump barrel.Its lifting working principle is identical with conventional pump, and in the pumping unit up stroke, the plunger lower end is through hollow gas bag, and well liquid makes gas separation because of the moment pressure release effect of gas-liquid density variation and cavity increase, is full of gas bag, increases the full level of liquid in the pump.In the down stroke, the upper end of plunger exposes gas bag through hollow gas bag, the gas release in the gas bag, and jacking liquid is up, reduces fluid density in the oil pipe, reduces polished rod load.The utility model has realized that gas separates in oil well pump, increased the full level of liquid in the pump, has improved pump efficiency, has reduced the lifting load, and is simple in structure.
Description of drawings
Accompanying drawing is the utility model embodiment's a structural representation.
Among the figure: 1. upper travelling valve, 2. short pump barrel, 3. gas bag, 4. plunger, 5. long pump barrel, 6. lower travelling valve, 7. standing valve.
Embodiment
Detailed description of relevant the utility model and technology contents, conjunction with figs. are explained as follows, yet accompanying drawing only provides the usefulness of reference with explanation, are not to be used for the utility model is limited.
Shown in figure, a kind of gas bag formula liquid gas oil well pump, wherein upper travelling valve 1, plunger 4 and lower travelling valve 6 are connected into plunger piston assembly.The pump barrel assembly is claimed in short pump barrel 2, gas bag 3, long pump barrel 5 and standing valve 7 series connection.Plunger piston assembly is positioned at the pump barrel assembly, forms liquid gas oil well pump.In the up stroke of liquid gas oil well pump, plunger piston assembly is up, and upper travelling valve 1 is closed with lower travelling valve 6; Standing valve 7 is opened under the effect of pump intake pressure, and well liquid charges in the pump barrel assembly, when the plunger piston assembly lower end moves to above position, gas bag 3 lower ends; Free gas in the well liquid is charged in the gas bag.In down stroke, plunger piston assembly is descending, and standing valve 7 cuts out; Because of pump barrel assembly internal pressure raises, upper travelling valve 1 is opened with lower travelling valve 6, and well liquid enters on the pump in the oil pipe; When the plunger piston assembly upper end moved to gas bag 3 upper ends with upper/lower positions, free gas in the gas bag 3 was together discharged with well liquid.
The above is merely the preferred embodiment of the utility model, and non-in order to limit the claim of the utility model, the equivalence of the patent spirit of other utilization the utility model changes, and all should all belong to the claim of the utility model.
Claims (4)
1. a gas bag formula liquid gas oil well pump comprises the pump barrel assembly; It is characterized in that said pump barrel assembly set inside has plunger piston assembly, said pump barrel assembly comprises short pump barrel, gas bag, long pump barrel and the standing valve that from top to bottom is connected in turn.
2. a kind of gas bag formula liquid gas oil well pump according to claim 1 is characterized in that, the said inner plunger piston assembly of pump barrel assembly that is arranged on is made up of upper travelling valve and lower travelling valve that two ends about plunger and the plunger connect.
3. a kind of gas bag formula liquid gas oil well pump according to claim 2 is characterized in that, it is same horizontal position with short pump barrel that said upper travelling valve particular location is located at short pump barrel inside; The plunger medium position of said gas bag between short pump barrel and long pump barrel; It is same horizontal position with long pump barrel that said lower travelling valve particular location is located at long pump barrel inside.
4. a kind of gas bag formula liquid gas oil well pump according to claim 1 is characterized in that the two ends up and down of said pump barrel assembly are connected with upper connection and lower contact respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205066030U CN202370814U (en) | 2011-12-08 | 2011-12-08 | Gas bag type liquid-gas oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205066030U CN202370814U (en) | 2011-12-08 | 2011-12-08 | Gas bag type liquid-gas oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370814U true CN202370814U (en) | 2012-08-08 |
Family
ID=46594519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205066030U Expired - Fee Related CN202370814U (en) | 2011-12-08 | 2011-12-08 | Gas bag type liquid-gas oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251199A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气股份有限公司 | Anti-airlock oil well pump |
-
2011
- 2011-12-08 CN CN2011205066030U patent/CN202370814U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251199A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气股份有限公司 | Anti-airlock oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20151208 |
|
| EXPY | Termination of patent right or utility model |