CN104033366A - Anti-airlock oil well pump - Google Patents
Anti-airlock oil well pump Download PDFInfo
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- CN104033366A CN104033366A CN201410223090.0A CN201410223090A CN104033366A CN 104033366 A CN104033366 A CN 104033366A CN 201410223090 A CN201410223090 A CN 201410223090A CN 104033366 A CN104033366 A CN 104033366A
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- pump
- gas
- oil
- oil well
- pump barrel
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- Reciprocating Pumps (AREA)
Abstract
An anti-airlock oil well pump can normally work in a high gas-oil-ratio oil well, associated gas and dissolved gas in the oil well will not make the pump locked by itself. The oil well pump comprises an upper cylindrical pump cylinder, a gas and liquid exchange cavity and a lower pump cylinder, an upper traveling valve, a piston and a lower traveling vale are arranged in the whole pump cylinder and connected in sequence, and a sucker rod is connected to the top end of the upper traveling valve; a spherical oil inlet valve is arranged in the center of the bottom end of the lower pump cylinder. The gas and liquid exchange cavity arranged between the upper pump cylinder and the lower pump cylinder is cylindrical, the piston arranged in the whole pump cylinder is matched with the inner surface of the upper pump cylinder and the inner surface of the lower pump cylinder for sealing, and annular space is formed between the piston and the inner surface of the gas and liquid exchange cavity. The anti-airlock oil well pump has the advantages that airlock of the oil well pump can be prevented, the fullness coefficient of the oil well pump is effectively increased, and the pump efficiency is improved; the oil well pump is used in the high gas-oil-ratio oil well for pumping oil, gas enters an upper pump and an oil pipe through the exchange cavity so that the specific gravity of a liquid column in the oil pipe is lowered, blowing is induced, spraying can be performed with pumping, and the yield is increased.
Description
Technical field
The present invention relates to a kind of oil production equipment, particularly a kind of oil well pump.
Background technique
Current conventional oil well pump is applicable to the lower oil well production of oil-gas ratio in oil well liquid-producing.In fluid, associated gas or solution gas cause the filling index of oil well pump to reduce, and have not only reduced pump efficiency but also reduced output.High oil-gas ratio can cause oil well pump gas lock, and impact is produced.
Summary of the invention
In order to solve gas lock that oil well pump causes because of gas and because gas impact reduces pump efficiency, to the invention provides a kind of anti-airlock oil pump.
The technical solution adopted for the present invention to solve the technical problems is to provide a kind of anti-airlock oil pump, and oil well pump of the present invention comprises cylindric upper pump barrel, gas-liquid inverting chamber and lower pump barrel; Upper travelling valve, piston, the lower travelling valve of being located at pump barrel inside connect successively, and upper travelling valve top is connected with sucker rod; Lower pump barrel bottom center is provided with spherical oiling valve.The gas-liquid inverting chamber arranging between upper pump barrel and lower pump barrel is cylindrical, is arranged at the internal surface fitted seal of piston and upper pump barrel and the lower pump barrel of pump barrel inside, and has annulus between the internal surface of gas-liquid inverting chamber.
The invention has the beneficial effects as follows: can prevent oil well pump gas lock, the filling index that can improve oil well pump improves pump efficiency.At the oil well of high oil-gas ratio, use this oil well pump pumping, gas enters in upper pump and oil pipe through inverting chamber, and the fluid column proportion in oil pipe is reduced, and induction blowing, realizes the spray while taking out, and increases output.
Brief description of the drawings
Accompanying drawing is structural representation of the present invention, and below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is that oil pump piston is in lower dead point position.
Fig. 2 is that oil pump piston is in upstroke process.
Fig. 3 is that oil pump piston is in upper dead center position.
Fig. 4 is that oil pump piston is in down stroke process.
In figure: 1. go up pump barrel, 2. gas-liquid inverting chamber, 3. descends pump barrel, 4. piston, 5. clearance volume, 6. oiling valve, 7. traveling valve, 8. oil pipe, 9. sucker rod, 10. lower travelling valve.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit protection scope of the present invention.
As shown in Figure 1, anti-airlock oil pump of the present invention comprises cylindric upper pump barrel 1, gas-liquid inverting chamber 2 and lower pump barrel 3; Upper travelling valve 7, piston 4, the lower travelling valve 10 of being located at pump barrel inside connect successively, and upper travelling valve 7 tops are connected with sucker rod 9; Lower pump barrel 3 bottom center are provided with spherical oiling valve 6.The gas-liquid inverting chamber arranging between upper pump barrel and lower pump barrel is cylindrical, is arranged at the internal surface fitted seal of piston and upper pump barrel and the lower pump barrel of pump barrel inside, and has annulus between the internal surface of gas-liquid inverting chamber.
The function of gas-liquid inverting chamber 2 (hereinafter to be referred as inverting chamber) is in the time of upstroke, to allow the gas in lower pump barrel 3 rise in this chamber through the annular space of this lower end, chamber, and will under the liquid in chamber, flow in the volume of lower pump barrel 3, having realized inverting chamber 2 exchanges with the gas-liquid in lower pump barrel 3 volumes, make to be full of gas lock factor when liquid has been eliminated down stroke in lower pump barrel 3, make pump that self-locking can not occur.When down stroke, gas in inverting chamber 2 can enter upper pump barrel 1 and then enter in oil pipe through the annular space of this upper end, chamber, go up simultaneously liquid in pump barrel 1 also through this annular space downstream to inverting chamber 2 in, having realized inverting chamber 2 exchanges with the gas-liquid in upper pump barrel 1 volume, make to be full of liquid in gas-liquid inverting chamber 2, done and held liquid and prepare for the exchange of the gas-liquid between upstroke gas-liquid inverting chamber and lower pump barrel 3 again.Generally speaking, in upstroke process, completed the gas-liquid exchange between inverting chamber 2 and lower pump barrel 2; In down stroke process, complete the gas-liquid exchange between inverting chamber 2 and upper pump barrel 1.
Because this oil well pump is provided with inverting chamber 2, when down stroke, can make solution gas or associated gas in lower pump barrel 2 enter above piston without the upper travelling valve 7 through piston, but through inverting chamber 2, gas is exchanged to piston top, and make to be full of liquid in lower pump barrel 3, having eliminated gas lock factor, can there is not self-locking in this pump.
The working procedure that the present invention sends out anti-airlock oil pump is as follows:
Oil pump piston 4 shown in Fig. 1 is in lower dead point position, and it is moving that now the pressure P V in clearance volume 5 equals the producing fluid level pressure P of pump inlet place, and oiling valve 6 and traveling valve 7 are all in closed condition.When upstroke starts, when piston 4 is up, the pressure P V in clearance volume 5 drops to when moving lower than producing fluid level pressure P, oiling valve 6 the action of producing fluid level pressure P with under be open, oil-gas mixture, in oiling valve 6 enters lower pump barrel 3, has started oil-feed process.
In Fig. 2, piston 4 is in upstroke state, go upward among gas-liquid inverting chamber 2, piston 4 upper ends have entered in pump barrel 1, lower end has been left lower pump barrel 3, this has been full of oil-gas mixture in pump barrel 3 at present, and wherein gas goes upward in inverting chamber 2, descending the flowing in lower pump barrel 3 of fluid in inverting chamber 2, in oil-feed process, realize the gas-liquid exchange of time pump barrel 3 with gas-liquid inverting chamber 2.
Fig. 3 piston 4 goes upward to upper dead center, in the upper pump barrel 1 of inverting chamber 2 and piston 4 belows, has been full of oil-gas mixture, has completed the feed liquor process of oil well pump.
Piston 4 shown in Fig. 4 is in down stroke state, oiling valve 6 cuts out, traveling valve 7 is opened, piston 4 has come downwards in gas-liquid inverting chamber 2, piston 4 upper ends have been left the lower end of pump barrel 1, now gas-liquid inverting chamber 2 is interior is gone upward in upper pump barrel 1 along the annular space of piston 4 upper ends by the gas of piston 4 descending extruding, and the fluid in upper pump barrel 1, downstream in gas-liquid inverting chamber 2, has completed the gas-liquid exchange between gas-liquid inverting chamber 2 and upper pump barrel 1.Oil-gas mixture in same pump barrel 3 is at present replaced in upper pump barrel 1 through traveling valve 7, has completed the replacement process of oil well pump down stroke.
The function of gas-liquid inverting chamber is in the time of upstroke, to allow the gas in lower pump barrel rise in this chamber through the annular space of this lower end, chamber, and will under the liquid in chamber, flow in the volume of lower pump barrel, realize the gas-liquid exchange in inverting chamber and lower pump barrel volume, make to be full of gas lock factor when liquid has been eliminated down stroke in lower pump barrel, make pump that self-locking can not occur.When down stroke, gas in inverting chamber can enter upper pump barrel and then enter in oil pipe through the annular space of this upper end, chamber, go up simultaneously liquid in pump barrel also through this annular space downstream to inverting chamber in, realize the gas-liquid exchange in inverting chamber and upper pump barrel volume, make to be full of liquid in gas-liquid inverting chamber, done and held liquid and prepare for the exchange of the gas-liquid between upstroke gas-liquid inverting chamber and lower pump barrel again.Generally speaking, in upstroke process, completed the gas-liquid exchange between inverting chamber and lower pump barrel; In down stroke process, complete the gas-liquid exchange between inverting chamber and upper pump barrel.
Because this oil well pump is provided with inverting chamber, when down stroke, can make solution gas or associated gas in lower pump barrel enter above piston without the traveling valve through piston, but through inverting chamber, gas be exchanged to piston top, and make to be full of in lower pump barrel liquid, having eliminated gas lock factor, can there is not self-locking in this pump.
Above embodiments of the invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variation and improvement etc. of doing according to the present patent application scope, within all should still belonging to patent covering scope of the present invention.
Claims (2)
1. an anti-airlock oil pump, is characterized in that: described oil well pump comprises cylindric upper pump barrel (1), gas-liquid inverting chamber (2) and lower pump barrel (3); The upper travelling valve (7), piston (4), the lower travelling valve (10) that are arranged at pump barrel inside connect successively, and upper travelling valve (7) top is connected with sucker rod (9); Lower pump barrel (3) bottom center is provided with spherical oiling valve (6).
2. anti-airlock oil pump according to claim 1, it is characterized in that: the gas-liquid inverting chamber (2) arranging between upper pump barrel (1) and lower pump barrel (3) is cylindrical, be arranged at the internal surface fitted seal of piston (4) and upper pump barrel (1) and the lower pump barrel (3) of pump barrel inside, and have annulus between the internal surface of gas-liquid inverting chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223090.0A CN104033366A (en) | 2014-05-23 | 2014-05-23 | Anti-airlock oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223090.0A CN104033366A (en) | 2014-05-23 | 2014-05-23 | Anti-airlock oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033366A true CN104033366A (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410223090.0A Pending CN104033366A (en) | 2014-05-23 | 2014-05-23 | Anti-airlock oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033366A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520116A (en) * | 2020-03-31 | 2020-08-11 | 东营市朝阳石油科技有限公司 | Oil-gas lifting device and method for high oil-gas ratio oil field |
| CN112594174A (en) * | 2020-11-26 | 2021-04-02 | 中国石油天然气股份有限公司 | Oil-well pump for oil pumping machine to exploit petroleum and natural gas |
-
2014
- 2014-05-23 CN CN201410223090.0A patent/CN104033366A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520116A (en) * | 2020-03-31 | 2020-08-11 | 东营市朝阳石油科技有限公司 | Oil-gas lifting device and method for high oil-gas ratio oil field |
| CN112594174A (en) * | 2020-11-26 | 2021-04-02 | 中国石油天然气股份有限公司 | Oil-well pump for oil pumping machine to exploit petroleum and natural gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140910 |
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| WD01 | Invention patent application deemed withdrawn after publication |