CN204851610U - Anticorrosive sand control gas -tight oil -well pump of long column stopper - Google Patents
Anticorrosive sand control gas -tight oil -well pump of long column stopper Download PDFInfo
- Publication number
- CN204851610U CN204851610U CN201520462559.6U CN201520462559U CN204851610U CN 204851610 U CN204851610 U CN 204851610U CN 201520462559 U CN201520462559 U CN 201520462559U CN 204851610 U CN204851610 U CN 204851610U
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- oil
- gas
- outer tube
- plunger
- intervalve
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses an anticorrosive sand control gas -tight oil -well pump of long column stopper, include short pump barrel, fill in and standing valve assembly with this short pump barrel matched with long column, short pump barrel overcoat is equipped with the urceolus, the upper and lower both ends of long column stopper link respectively has upper and lower traveling valve, the lower extreme of standing valve assembly even has inner tube and liquid inlet connector according to the preface, the upper end of urceolus even has oil pipe to go up the coupling, and its lower extreme even has the intervalve through the crossover sub, and this intervalve passes through liquid inlet connector even has a low tube, and the end of low tube is equipped with the plug, the lower extreme of urceolus passes through the crossover sub still is equipped with the gas -tight outer tube, this gas -tight outer tube terminal with be close to the low tube outer wall sealing connection of plug top, be formed with annular oil feed passageway between gas -tight outer tube and the intervalve, be located the wall of the gas -tight outer tube of liquid inlet connector top on the equipartition have the inlet port. Use the utility model discloses can coseparation oil and gas when extracting in the pit the oil, improved the extraction efficiency of oil in the pit.
Description
Technical field
The utility model relates to a kind of oil well pump, specifically relates to a kind of long-plunger antiseptic sand-proof airlock-resistant oil pump.
Background technique
Extract the oil well pump with long plunger piston of oil when oil extraction in oil field from underground, structure mainly comprises
Short pump barrel, the long-plunger matched with this short pump barrel and standing valve assembly, urceolus is arranged with outside described short pump barrel, the upper/lower terminal of described long-plunger is connected with upper and lower traveling valve respectively, the lower end of described standing valve assembly is sequentially connected with interior pipe and liquid inlet joint, the upper end of described urceolus is connected with box cupling on oil pipe, its lower end is connected with intervalve by crossover sub, and this intervalve is connected with lower pipe by described liquid inlet joint, and the end of lower pipe is equipped with plug.During use, oil well pump is the lower end being connected in oil well inner oil tube, long-plunger assembly is by the lift power of sucker rod that is connected with ground pumping unit and self gravitation upper and lower to-and-fro motion in pump barrel, because having tight coordinating between the outer wall of the long-plunger of plunger piston assembly and the internal face of short pump barrel, upper and lower traveling valve is connected with respectively at the upper/lower terminal of plunger, standing valve is connected with in the lower end of pump barrel, so plunger is in pump barrel during upper and lower to-and-fro motion, the oil bottom oil well is retracted to ground off and in well casing.
Above-mentioned oil well pump with long plunger piston of the prior art, oil pipe near plug is evenly equipped with oil inlet hole, when extracting downhole petroleum, oil enters in plunger from the oil inlet hole of oil pipe above plug and then be drawn to well, normal with the gas such as gas, carbon dioxide in the oil of oil in well, when extracting oil, these gases are pumped in pump together with oil, greatly reduce the efficiency that oil well pump extracts oil.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of long-plunger antiseptic sand-proof airlock-resistant oil pump that also can not reduce oil extraction efficiency when gas is contained in oil well PetroChina Company Limited..
For solving the problems of the technologies described above, long-plunger antiseptic sand-proof airlock-resistant oil pump of the present utility model, comprise short pump barrel, the long-plunger matched with this short pump barrel and standing valve assembly, urceolus is arranged with outside described short pump barrel, described long-plunger upper, lower two ends are connected with respectively, lower travelling valve, the lower end of described standing valve assembly is sequentially connected with interior pipe and liquid inlet joint, the upper end of described urceolus is connected with box cupling on oil pipe, its lower end is connected with intervalve by crossover sub, this intervalve is connected with lower pipe by described liquid inlet joint, the end of lower pipe is equipped with plug, gas-tight outer tube is also equipped with by described crossover sub in the lower end of described urceolus, the end of this gas-tight outer tube is tightly connected with the lower pipe outer wall above described plug, annular oil inlet passage is formed between described gas-tight outer tube and intervalve, the wall being positioned at the gas-tight outer tube above liquid inlet joint is evenly equipped with oil inlet hole.
Adopt the long-plunger antiseptic sand-proof airlock-resistant oil pump of said structure, because gas-tight outer tube is also equipped with by described crossover sub in the lower end of described urceolus, the end of this gas-tight outer tube is tightly connected with the lower pipe outer wall above described plug, when sucker rod drives long-plunger to move upward, traveling valve cuts out, the oil pumping of long-plunger sealing short pump barrel, now pump cavity of resorption volume increases, pressure reduces, standing valve is opened, down-hole fluid is entered by uniform oil inlet hole on the described gas-tight outer tube wall be positioned at above liquid inlet joint and descending, in descending process, gas is up is separated with fluid, fluid enters bottom interior pipe and turns to 180 ° upwards to run again, long-plunger antiseptic sand-proof airlock-resistant oil pump of the present utility model can be separated oil and gas when extracting downhole petroleum simultaneously, improve the extraction efficiency of downhole petroleum.
Improve as one of the present utility model, the material of described upper and lower traveling valve and standing valve assembly is cobalt-chromium-tungsten alloy material; Described short pump barrel selects No. 45 finish rolling steel pipes, and its internal surface adopts electrochromism cure process, can improve antiseptic effect of the present utility model further after adopting above-mentioned technical characteristics.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the sectional structure schematic diagram of the utility model long-plunger antiseptic sand-proof airlock-resistant oil pump.
Fig. 2-Fig. 5 is the angle from being convenient to see clearly figure structure everywhere in 1, fragments into the structural representation after four parts along the long-plunger antiseptic sand-proof airlock-resistant oil pump in Fig. 1 shown in A-A, B-B, C-C bundle of lines Fig. 1.
Embodiment
See Fig. 1-Fig. 5, long-plunger antiseptic sand-proof airlock-resistant oil pump of the present utility model, comprise short pump barrel 10, the long-plunger 20 matched with this short pump barrel 10 and standing valve assembly 30, urceolus 40 is arranged with outside described short pump barrel 10, described long-plunger 20 upper, lower two ends are connected with respectively, lower travelling valve 21, 22, the lower end of described standing valve assembly 30 is sequentially connected with interior pipe 31 and liquid inlet joint 32, the upper end of described urceolus 40 is connected with box cupling 41 on oil pipe, its lower end is connected with intervalve 43 by crossover sub 42, this intervalve 43 is connected with lower pipe 50 by described liquid inlet joint 32, the end of lower pipe 50 is equipped with plug 51, gas-tight outer tube 44 is also equipped with by described crossover sub 42 in the lower end of described urceolus 40, the end of this gas-tight outer tube 44 is tightly connected with lower pipe 50 outer wall above described plug 51, annular oil inlet passage 45 is formed between described gas-tight outer tube 44 and intervalve 43, the wall being positioned at the gas-tight outer tube 44 above liquid inlet joint 32 is evenly equipped with oil inlet hole 46.
Claims (2)
1. a long-plunger antiseptic sand-proof airlock-resistant oil pump, comprise short pump barrel (10), the long-plunger (20) matched with this short pump barrel (10) and standing valve assembly (30), urceolus (40) is arranged with outside described short pump barrel (10), described long-plunger (20) upper, lower two ends are connected with respectively, lower travelling valve (21, 22), the lower end of described standing valve assembly (30) is sequentially connected with interior pipe (31) and liquid inlet joint (32), the upper end of described urceolus (40) is connected with box cupling on oil pipe (41), its lower end is connected with intervalve (43) by crossover sub (42), this intervalve (43) is connected with lower pipe (50) by described liquid inlet joint (32), the end of lower pipe (50) is equipped with plug (51), it is characterized in that: gas-tight outer tube (44) is also equipped with by described crossover sub (42) in the lower end of described urceolus (40), the end of this gas-tight outer tube (44) is tightly connected with lower pipe (50) outer wall near described plug (51) top, annular oil inlet passage (45) is formed between described gas-tight outer tube (44) and intervalve (43), be positioned at liquid inlet joint (32) top gas-tight outer tube (44) wall on be evenly equipped with oil inlet hole (46).
2. long-plunger antiseptic sand-proof airlock-resistant oil pump as claimed in claim 1, is characterized in that: the material of described upper and lower traveling valve (21,22) and standing valve assembly (30) is cobalt-chromium-tungsten alloy material; Described short pump barrel (10) selects No. 45 finish rolling steel pipes, and its internal surface adopts electrochromism cure process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462559.6U CN204851610U (en) | 2015-07-01 | 2015-07-01 | Anticorrosive sand control gas -tight oil -well pump of long column stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462559.6U CN204851610U (en) | 2015-07-01 | 2015-07-01 | Anticorrosive sand control gas -tight oil -well pump of long column stopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851610U true CN204851610U (en) | 2015-12-09 |
Family
ID=54742164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520462559.6U Expired - Fee Related CN204851610U (en) | 2015-07-01 | 2015-07-01 | Anticorrosive sand control gas -tight oil -well pump of long column stopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851610U (en) |
-
2015
- 2015-07-01 CN CN201520462559.6U patent/CN204851610U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20190701 |