CN2487888Y - Load-sharing oil pump - Google Patents
Load-sharing oil pump Download PDFInfo
- Publication number
- CN2487888Y CN2487888Y CN 01227205 CN01227205U CN2487888Y CN 2487888 Y CN2487888 Y CN 2487888Y CN 01227205 CN01227205 CN 01227205 CN 01227205 U CN01227205 U CN 01227205U CN 2487888 Y CN2487888 Y CN 2487888Y
- Authority
- CN
- China
- Prior art keywords
- pump
- plunger
- oil
- big
- long
- 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
Links
- 239000003129 oil well Substances 0.000 claims abstract description 15
- 210000002445 nipple Anatomy 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The load-sharing oil-well pump in the oil exploitation technology is formed from pump downstream valve 3, large pump plunger 4, oil inlet and outlet hole 5 and sealing short section 6, etc., and the upper portion of large pump barrel 2 is equipped with oil inlet and outlet hole 5, and between the large pump barrel 2 and oil pipe 8 a sealing short section 6 is set, so that it can implement "deep pumping by large pump" and can raise oil-pumping output of deep well.
Description
The utility model relates to a kind of minute load oil well pump in the oil exploitation technology.
In the petroleum production process, increase along with the oil produced quantity, if makeup energy is not enough, strata pressure just constantly descends, and the liquid level in the pit shaft is also just constantly deepened, therefore, the pump setting depth of oil well pump is also constantly deepened, along with the increase of pump setting depth, and the lengthening of sucker rod, the suspending point loading of pumping unit is strengthened, and this just requires to be equipped with bigger pumping unit.But the increase of pumping unit is restricted, and the load of sucker rod also is restricted, and therefore, takes " little pump is taken out deeply " when pumping for low fluid level well mostly, but because loss of plunger stroke is big, and wastage is big, general pump efficiency is very low, and promptly energy consumption is big, yields poorly.
The purpose of this utility model is to provide a kind of effective solution high productivity index, and the oil recovery problem of low fluid level well realizes the branch load oil well pump of " big pump is taken out deeply ".
The utility model is achieved in that by pump bottom valve 1, big pump pump barrel 2, pump lower travelling valve 3, big pump plunger 4, advance oil drainage hole 5, packoff nipple 6, long-plunger 7, upper travelling valve 9 forms, pump bottom valve 1, big pump plunger 4 are arranged respectively in the big pump pump barrel 2, big pump plunger 4 is built-in with pump lower travelling valve 3, between big pump pump barrel 2 and the oil pipe 8 packoff nipple 6 is arranged, long-plunger 7 is arranged in the packoff nipple 6, and there is upper travelling valve 9 end of long-plunger 7 and sucker rod 10 joints.
The utility model also adopts following technological scheme:
Have into oil drainage hole 5 in big pump pump barrel 2 upper end portions.
Clearance seal can be used between packoff nipple 6 and the long-plunger 7, also packing seal can be used.
Advantage of the present utility model is: discharge the common oil well pump that oil mass and the suffered power of sucker rod are equivalent to long-plunger 7 areas when upstroke; During down stroke, utilize the deadweight of part sucker rod, the oil drainage hole 5 that passes through into that will be equivalent to the volume between long-plunger 7 and the big pump pump barrel 2 is discharged, upper and lower stroke promptly jig frequency wet goods of discharging in big pump pump barrel 2 isodiametric common oil well pump oil drain quantities, therefore, this device can be realized " big pump is taken out deeply ", improves the deep-well oil pumping yield, and it is low to consume energy simultaneously.
Fig. 1 is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further described:
By pump bottom valve 1, big pump pump barrel 2, pump lower travelling valve 3, big pump plunger 4, advance oil drainage hole 5, packoff nipple 6, long-plunger 7, upper travelling valve 9 and form, during the oil well pump upstroke, pump lower travelling valve 3 and upper travelling valve 9 are closed, pump bottom valve 1 is opened oil-feed, and the oil between long-plunger 7 and the big pump barrel 2 flows back in the pit shaft by advancing oil drainage hole 5.Long-plunger 7 is by packoff nipple 6 up strokes, oil well pump when upstroke oil extraction quite and diameter equal the common oil well pump discharge capacity of long-plunger 7, this shows that the suffered power of upstroke bar is identical with the common oil well pump of long-plunger 7 equal diameters.During the oil well pump down stroke, pump bottom valve 1 is closed, and pump lower travelling valve 3, upper travelling valve 9 are opened, and big pump plunger 4 following oil enter the space that forms between long-plunger 7 and the big pump pump barrel 2 by advancing oil drainage hole 5.The power of down stroke can utilize the part of sucker rod deadweight, therefore can reduce the suspending point loading of pumping unit down stroke.
Claims (3)
1. divide the load oil well pump, by pump bottom valve (1), big pump pump barrel (2), pump lower travelling valve (3), big pump plunger (4), advance oil drainage hole (5), packoff nipple (6), long-plunger (7), upper travelling valve (9) and form, it is characterized in that: pump bottom valve (1), big pump plunger (4) are arranged respectively in the big pump pump barrel (2), big pump plunger (4) is built-in with pump lower travelling valve (3), between big pump pump barrel (2) and the oil pipe (8) packoff nipple (6) is arranged, long-plunger (7) is arranged in the packoff nipple (6), and there is upper travelling valve (9) end of long-plunger (7) and sucker rod (10) joint.
2. according to claim 1 minute load oil well pump is characterized in that: have into oil drainage hole (5) on big pump pump barrel (2) top.
3. according to claim 1 minute load oil well pump is characterized in that: can use clearance seal between packoff nipple (6) and the long-plunger (7), also can use packing seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01227205 CN2487888Y (en) | 2001-06-15 | 2001-06-15 | Load-sharing oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01227205 CN2487888Y (en) | 2001-06-15 | 2001-06-15 | Load-sharing oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2487888Y true CN2487888Y (en) | 2002-04-24 |
Family
ID=33642686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01227205 Expired - Fee Related CN2487888Y (en) | 2001-06-15 | 2001-06-15 | Load-sharing oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2487888Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412368C (en) * | 2005-07-12 | 2008-08-20 | 张明玉 | Efficient reversed beam-pumping unit |
-
2001
- 2001-06-15 CN CN 01227205 patent/CN2487888Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412368C (en) * | 2005-07-12 | 2008-08-20 | 张明玉 | Efficient reversed beam-pumping unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |