CN2688927Y - Salt-proof pumping units - Google Patents
Salt-proof pumping units Download PDFInfo
- Publication number
- CN2688927Y CN2688927Y CN 200420010562 CN200420010562U CN2688927Y CN 2688927 Y CN2688927 Y CN 2688927Y CN 200420010562 CN200420010562 CN 200420010562 CN 200420010562 U CN200420010562 U CN 200420010562U CN 2688927 Y CN2688927 Y CN 2688927Y
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- CN
- China
- Prior art keywords
- valve
- plunger
- pump barrel
- salt
- standing valve
- 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 discloses a salt-proof oil pump, comprising a head race travelling valve, a plunger, a downstream travelling valve, a standing valve and a lower collar. A plunger assembly is composed of the screwed connection of the head race travelling valve, the plunger and the downstream travelling valve; a righting sleeve, a short pump barrel, a pump barrel extension tube and an extension nipple are in the screwed connection; a pump barrel assembly is composed of the screwed connection of the upper collar, an outer pipe and a horizontal type collar; one end of the standing valve and the lower collar are in the screwed connection, and the other end of the standing valve is connected with an anti-falling article cover, which forms a standing valve assembly. Due to the fact that the length of the plunger is bigger than the length of the pump barrel, the head race travelling valve lies out of the pump barrel all along, and the liquid does not exist in the short barrel, the crystallizing opportunity for the salt does not exist, and the salt blocking the pump can not happen; moreover, the middle hole of the standing valve is the quincunx through hole, the dead corner does not exist in the entire flow channel, and the liquid flow is the same basically; therefore, the salt crystallizing probability is decreased.
Description
Technical field
The utility model relates to a kind of oil well pump, belongs to the oil-well pump device in the oil drilling and r eoovery machine.
Background technique
In part machine oil recovery well, because contain a large amount of inorganic salts (Ca and Mg) and macromolecular substances in the crude oil, these materials easily form crystallization in the pumping process, thereby holddown takes place.In easy salt crust hole condition, conventional pumps easily forms the crystallization of salt because pump barrel is longer than plunger between pump barrel and plunger in oil pumping process, thereby form the salt card, standing valve cover adopts closed cage, fluid is entered pump barrel cause obstruction, easily causes the crystallization of salt this moment in standing valve cover.Therefore will often clean, increase the crude oil production cost conventional pumps.
Summary of the invention
The purpose of this utility model is exactly the shortcoming that overcomes prior art, and a kind of anti-salt oil well pump is provided.
The purpose of this utility model is achieved in that anti-salt oil well pump is by upper travelling valve, plunger, lower travelling valve, standing valve, box cupling is formed down, upper travelling valve, plunger, the lower travelling valve formation plunger piston assembly that is threaded, supporting positive cover, short pump barrel, pump barrel extension pipe, extension nipple are threaded, and last box cupling, outer tube, flat box cupling, extension nipple are threaded and constitute the pump barrel assembly; Plunger is longer than the length of short pump barrel, and standing valve one end is threaded with following box cupling, and the other end links to each other with anti-junk cover, and they have constituted the standing valve assembly.The center of standing valve has plum blossom shape through hole.
The utility model adopts long-plunger and short pump barrel combination, the length of plunger is greater than the length of pump barrel, no matter during oil well pump work is upstroke or down stroke, upper travelling valve is all the time outside pump barrel, this just means in short tube does not have liquid, therefore salt does not just have the chance of crystallization, the salt holddown just can not take place, and the mesopore of standing valve is a plum blossom shape through hole, therefore make the speed and the pressure of the liquid by oiling valve that big variation does not take place, no dead angle in the whole runner, flow rate of liquid is basic identical, thereby the probability of salt crust is descended.
Description of drawings
Fig. 1: the utility model structural representation; Fig. 2: existing standing valve cover structural representation;
Fig. 3: A is to view; Fig. 4: the utility model standing valve valve bonnet structural representation;
Fig. 5: c-c sectional drawing;
Among the figure: box cupling under 1-upper travelling valve, 2-plunger, the last box cupling of 3-, 4-supporting positive cover, 5-short pump barrel, 6-pump barrel extension pipe, 7-lower travelling valve, 8-outer tube, 9-flat box cupling, 10-extension nipple, the anti-junk cover of 11-, 12-standing valve, the 13-;
Embodiment
As shown in Figure 1, anti-salt oil well pump is made up of upper travelling valve 1, plunger 2, short pump barrel 5, lower travelling valve 7, standing valve 12, following box cupling 13, upper travelling valve 1, plunger 2, the lower travelling valve 7 formation plunger piston assembly that is threaded, supporting positive cover 4, short pump barrel 5, pump barrel extension pipe 6, extension nipple 10 are threaded, and last box cupling 3, outer tube 8, flat box cupling 9 are threaded and constitute the pump barrel assembly; Standing valve 12 1 ends are threaded with following box cupling 13, and the other end links to each other with anti-junk cover 11, and they have constituted the standing valve assembly.The center of standing valve 12 has plum blossom shape through hole.The length of plunger 2 is greater than the length of pump barrel 5, no matter during oil well pump work is upstroke or down stroke, upper travelling valve 1 is all the time outside pump barrel, this just means in short pump barrel 5 does not have liquid, so salt just do not have the chance of crystallization, and the salt holddown just can not take place, and the long-plunger surface is a continuous surface, do not have square that conventional oil pump plunger piston has from the shape groove, so there is not liquid in plunger surface, the salt crystallizer can just not exist.
The mesopore of standing valve 12 is the streamlined open type through hole of plum blossom shape, as Fig. 4, shown in Figure 5, make the speed and the pressure of the liquid by oiling valve that big variation not take place, no dead angle in the whole runner, flow rate of liquid is basic identical, thereby the probability of salt crust is descended, and the employing of the oiling valve of conventional oil well pump is common closed cage, as Fig. 2, shown in Figure 3, when liquid stream passes through valve bonnet, not only will be by valve ball and valve bonnet annular space, but also will be through the aperture of valve bonnet, have the dead angle between four holes, pressure and flow velocity can have greatly changed at this moment, locate easy salt crust at the dead angle.
During work, standing valve assembly and pump barrel assembly are lowered to the stratum with after being threaded with tubing string, and plunger is lowered in the pump barrel with rod string, and during upstroke, traveling valve cuts out, and standing valve is opened, and fluid enters in the pump barrel through standing valve; During down stroke, standing valve cuts out, and traveling valve is opened, and the fluid in the pump barrel enters in the oil pipe through traveling valve.
Claims (2)
1, a kind of anti-salt oil well pump, it is made up of upper travelling valve (1), plunger (2), lower travelling valve (7), standing valve (12), following box cupling (13), it is characterized in that: upper travelling valve (1), plunger (2), lower travelling valve (7) the formation plunger piston assembly that is threaded, supporting positive cover (4), short pump barrel (5), pump barrel extension pipe (6), extension nipple (10) are threaded, and last box cupling (3), outer tube (8), flat box cupling (9) are threaded and constitute the pump barrel assembly; The length of plunger (2) is longer than short pump barrel (5), and standing valve (12) one ends are threaded with following box cupling (13), and the other end links to each other with anti-junk cover (11), and they have constituted the standing valve assembly.
2, anti-salt oil well pump according to claim 1 is characterized in that the center of described standing valve (12) has plum blossom shape through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010562 CN2688927Y (en) | 2004-04-05 | 2004-04-05 | Salt-proof pumping units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420010562 CN2688927Y (en) | 2004-04-05 | 2004-04-05 | Salt-proof pumping units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2688927Y true CN2688927Y (en) | 2005-03-30 |
Family
ID=34668494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420010562 Expired - Fee Related CN2688927Y (en) | 2004-04-05 | 2004-04-05 | Salt-proof pumping units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2688927Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291605A (en) * | 2013-05-28 | 2013-09-11 | 濮阳市科力达机械制造有限公司 | Efficient protective oil pumping device and application method |
| CN105298450A (en) * | 2015-12-04 | 2016-02-03 | 中国石化江汉油田分公司江汉采油厂 | Salt prevention and oil extraction integrated production tube column for salt-deposited oil well |
-
2004
- 2004-04-05 CN CN 200420010562 patent/CN2688927Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291605A (en) * | 2013-05-28 | 2013-09-11 | 濮阳市科力达机械制造有限公司 | Efficient protective oil pumping device and application method |
| CN105298450A (en) * | 2015-12-04 | 2016-02-03 | 中国石化江汉油田分公司江汉采油厂 | Salt prevention and oil extraction integrated production tube column for salt-deposited oil well |
| CN105298450B (en) * | 2015-12-04 | 2018-05-01 | 中国石化江汉油田分公司江汉采油厂 | A kind of integrated flow string of anti-salt oil recovery for salt crust oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZYZJ PETROLEUM EQUIPMENT CO., LTD. Free format text: FORMER NAME: MACHINERY GENERAL PLANT, ZHONGYUAN PETROLEUM PROSPECTING BUREAU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 457001 No. 365, Daqing Road, Puyang, Henan Patentee after: Zhongyuan Zongji Petroleum Equipment Co., Ltd. Address before: 457001 No. 365, Daqing Road, Puyang, Henan Patentee before: Henan ZYZJ Petroleum Equipment Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 Termination date: 20110405 |