CN102434136A - Electric pump oil production positive water injection integral pipe column and application method thereof - Google Patents
Electric pump oil production positive water injection integral pipe column and application method thereof Download PDFInfo
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- CN102434136A CN102434136A CN2011103526250A CN201110352625A CN102434136A CN 102434136 A CN102434136 A CN 102434136A CN 2011103526250 A CN2011103526250 A CN 2011103526250A CN 201110352625 A CN201110352625 A CN 201110352625A CN 102434136 A CN102434136 A CN 102434136A
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Abstract
本发明涉及一种电泵采油正注水一体化管柱及应用方法，适用于油田稠油掺稀电泵采油井，属于石油工业采油装置及工艺，该管柱主要由油管、电缆、注水阀、离心泵、分离器、保护器、电机、导流罩组成，所述注水阀安装在离心泵和油管之间，注水阀由阀体、滑块、弹簧、限位套、支承座、调节螺母、下接头、凡尔球构成，所述阀体工作腔的内壁上均布有多个注水孔，所述滑块中间设有中间孔；滑块运动到上部时，注水孔被滑块封堵，滑块运动到下部时，注水孔打开。该方法包括的步骤：①下管柱、②投球、③憋压、④正注水、⑤捞球。本发明采用正注水方法，节约了大量稀油，正注水避开了注入水与电缆电机的直接接触，保护了电缆和电机，延长了检泵周期。
The invention relates to an electric pump oil recovery positive water injection integrated pipe string and its application method, which is suitable for thick oil mixed with thin electric pump oil production wells in oil fields, and belongs to the oil production device and technology in the petroleum industry. The pipe string is mainly composed of oil pipes, cables, water injection valves, Centrifugal pump, separator, protector, motor, shroud. The water injection valve is installed between the centrifugal pump and the oil pipe. The water injection valve is composed of valve body, slider, spring, limit sleeve, support seat, adjusting nut, The inner wall of the working chamber of the valve body is composed of a lower joint and a ball. There are a plurality of water injection holes evenly distributed on the inner wall of the working chamber of the valve body. There is a middle hole in the middle of the slider; when the slider moves to the upper part, the water injection holes are blocked by the slider. When the slider moves to the lower part, the water injection hole is opened. The method includes steps: ① lowering the pipe string, ② throwing the ball, ③ suppressing pressure, ④ positive water injection, and ⑤ catching the ball. The invention adopts the positive water injection method, which saves a large amount of thin oil, avoids the direct contact between the injected water and the cable motor, protects the cable and the motor, and prolongs the pump inspection period.
Description
Technical field
The present invention relates to positive water filling integrated pipe column of a kind of electric motor drive oil pump system and application process, be applicable to that oil-field thick-oil mixes rare electric pump producing well, belong to the extracting device of oil and the technology of petroleum industry.
Background technology
At present, mix a kind of important DP technology that rare viscosity reduction has become the ultra-deep ultra-thick oil exploitation.Along with the oil field gets into development late stage, the stratum elastic energy weakens in addition, and oil well liquid-supplying is not enough, and water filling has become for oil and increased the oil reservoir energy, improves rate of oil production and improved a kind of important of oil recovery rate and effective technological measure.Electric pump has advantages such as dark, high temperature resistant, the anti-viscous crude of following depth, available discharge capacity scope be wide in the viscous crude lifting; Compare with sucker rod pump, mix rare good mixing effect, can reduce and mix rare ratio; Practice thrift thin oil, electric motor drive oil pump system becomes the main body of ultra-deep ultra-thick oil mechanical oil recovery gradually.
In thickened oil recovery, existing electric motor drive oil pump system tubing string mainly is made up of motor, protector, gs-oil separator, centrifugal pump, cable and oil pipe and wellhead assembly.In order to prevent that viscous crude from going into pump and causing stifled pump, electric pump need just be annotated thin oil and be full of oil pipe before startup or after water filling accomplishes for oil; Perhaps after the stifled pump of viscous crude, need carry out direct flushing to pump.
Existing electric pump pipe column replaces the problem below existing in the oil in water filling:
1, during water filling, because the electric pump runner is less, resistance is too big during positive water filling, and can cause the impeller reversing to damage electric pump, therefore can only adopt anti-water filling;
2, during anti-water filling, the thin oil of oil jacket annular space all has been injected into the shaft bottom, after water filling is accomplished, needs fill with the oil jacket annular space with thin oil again, because oil jacket annular space volume is bigger, the thin oil waste is serious;
3, during anti-water filling, exist and inject water and wash away cable, the motor cable functional performance is had certain influence, show that through statistics the pump detection period of water filling electric pump well shortens than the pump detection period of non-water filling greatly.
Summary of the invention
The present invention seeks in order to overcome above-mentioned deficiency of the prior art; The spy provides positive water filling integrated pipe column of a kind of electric motor drive oil pump system and application process, solves the problem that existing electric pump pipe column exists when water filling, adopts the way of positive water filling; Avoiding injecting water contacts with the direct of motor cable; The protection cable prolongs pump detection period, practices thrift thin oil simultaneously.
The technical scheme that the present invention adopts is:
The positive water filling integrated pipe column of a kind of electric motor drive oil pump system of the present invention; Mainly form by oil pipe, cable, water injection valve, centrifugal pump, eliminator, protector, motor, kuppe; Centrifugal pump, eliminator, protector, motor are installed in the tubing string below successively from top to bottom, and kuppe is installed in the outside of motor; Said water injection valve is installed between centrifugal pump and the oil pipe, and water injection valve is made up of valve body, slide block, spring, stop collar, supporting base, adjusting nut, lower contact, valve ball; Be evenly equipped with a plurality of water injection holes on the inwall of said valve body working chamber; Be provided with interstitial hole in the middle of the said slide block, slide block top is located by step, and the slide block bottom is located by stop collar; Slide block moves in working chamber, and when slide block movement arrived top, water injection hole was by the slide block shutoff, and when slide block movement arrived the bottom, water injection hole was opened.Said spring is installed between slide block and the supporting seat, and said adjusting nut is installed in stop collar inside, and said lower contact is installed in valve body lower portion.
The application process of the positive water filling integrated pipe column of a kind of electric motor drive oil pump system of the present invention may further comprise the steps:
1. lower tubular column
Water injection valve is installed between centrifugal pump and the oil pipe, with the tubing string G.I.H;
2. pitching
When oil well needs water filling to replace oil, drop into valve ball from oil pipe and be seated on the interstitial hole of slide block the pathway closure that slide block is downward;
3. build the pressure
Build the pressure on oil pipe top, when pressure at 0-20MPa with the interior while during greater than the preset pressure value of spring, valve ball and slide block are displaced downwardly to bottom dead centre together, the water injection hole passage is opened;
4. positive water filling
Carry out water filling from oil pipe, inject water and get into the oil jacket annular space,, thereby get into oil reservoir through the kuppe outside from water injection hole;
5. drag for ball
After water filling is accomplished, salvage valve ball, spring recovers the preset pressure situation, moves on the slide block, and the oil jacket annulus access is closed, thereby can realize mixing normally rare production and positive well-flushing or just annotate technology such as thin oil.
The present invention has following advantage compared with prior art:
1, electric pump pipe column has increased water injection valve, can realize the function of positive water filling.2, behind the positive water-filling method of employing, only need fill with oil pipe, and the volume of oil pipe interior volume specific ratio oil jacket annular space is little a lot, therefore compares with anti-water filling, has practiced thrift a large amount of thin oils with thin oil.3, positive water filling has been avoided injecting water and has been contacted with the direct of cable motor, has protected cable and motor, has prolonged pump detection period.
Description of drawings
Fig. 1 is the positive water filling integrated pipe column of a kind of electric motor drive oil pump system of a present invention structural representation.
Fig. 2 is a water injection valve structural representation of the present invention.
Fig. 3 is a water injection valve water injection hole passage open mode work sketch map of the present invention.
Fig. 4 is the application process flow chart of the positive water filling integrated pipe column of a kind of electric motor drive oil pump system of the present invention.
1. sleeve pipes among the figure, 2. oil pipe, 3. cable, 4. water injection valve, 5. centrifugal pump, 6. eliminator, 7. sealing ring ring, 8. kuppe, 9. slips, 10. pod body, 11. protectors, 12. motors, 13. oil reservoirs, 14. valve bodies, 15. interstitial holes, 16. slide blocks, 17. water injection holes, 18. valve body working chambers, 19. springs, 20. stop collars, 21 supporting bases, 22. adjusting nuts, 23. lower contacts, 24. valve balls, 25. steps.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4; The positive water filling integrated pipe column of a kind of electric motor drive oil pump system of the present invention; Mainly form by oil pipe 2, cable 3, water injection valve 4, centrifugal pump 5, eliminator 6, protector 11, motor 12, kuppe 8; Centrifugal pump 5, eliminator 6, protector 11, motor 12 are installed in tubing string 2 belows successively from top to bottom, and kuppe 8 is installed in the outside of motor 12; Said water injection valve 4 is installed between centrifugal pump 5 and the oil pipe 2, and water injection valve 4 is made up of valve body 14, slide block 16, spring 19, stop collar 20, supporting base 21, adjusting nut 22, lower contact 23, valve ball 24; Be evenly equipped with a plurality of water injection holes 17 on the inwall of said valve body working chamber 18; In the middle of the said slide block 16 interstitial hole 15 is arranged, slide block 16 tops are by step 25 location, and slide block 16 bottoms are by stop collar 20 location; Slide block 16 moves in working chamber 18, and when slide block 16 moved to top, water injection hole 17 was by slide block 16 shutoff, and when slide block 16 moved to the bottom, water injection hole 17 was opened.Described spring 19 is installed between slide block 16 and the supporting seat 21, and described adjusting nut 22 is installed in stop collar 20 inside, and described lower contact 23 is installed in valve body 14 bottoms.
As shown in Figure 4, the application process of the positive water filling integrated pipe column of a kind of electric motor drive oil pump system of the present invention may further comprise the steps:
1. lower tubular column
2. pitching
When oil well needs water filling to replace oil, drop into valve balls 24 from oil pipe 2 and be seated on the interstitial hole 15 of slide block 16, the pathway closure that slide block 16 is downward;
3. build the pressure
Build the pressure on oil pipe 2 tops, when pressure at 0-20MPa with the interior while during greater than the preset pressure value of spring 19, valve ball 24 is displaced downwardly to bottom dead centre together with slide block 16, water injection hole 17 passages are opened;
4. positive water filling
Carry out water filling from oil pipe 2, inject water and get into the oil jacket annular space,, thereby get into oil reservoir 13 through kuppe 8 outsides from water injection hole 17;
5. drag for ball
After water filling is accomplished, salvage valve ball 24, spring 19 recovers the preset pressure situations, moves on the slide block 16, and the oil jacket annulus access is closed, thereby can realize mixing normally rare production and positive well-flushing or just annotate technology such as thin oil.
Water injection valve operating principle of the present invention is following:
Like Fig. 2, shown in Figure 3, after water injection valve 4 assembled, slide block 16 was under the preset pressure effect of spring 19; Slide block 16 runs to top dead-centre; Block water injection hole 17, the oil jacket annulus access is closed, thereby can realize mixing normally rare production and positive well-flushing or just annotate technology such as thin oil.When oil is replaced in the needs water filling, drop into valve ball 24 from oil pipe 2 and be seated on the interstitial hole 15 of slide block 16 slide block 16 downward pathway closures; Build the pressure on top then; When pressure at 0-20MPa with the interior while during greater than the preset pressure value of spring 19, valve ball 24 is displaced downwardly to bottom dead centre together with slide block 16, and is as shown in Figure 3; Water injection hole 15 passages are opened, thereby can realize positive water filling.Adjusting nut 20 can regulating spring 17 preset pressure value.
Claims (2)
1. positive water filling integrated pipe column of electric motor drive oil pump system; Mainly form by oil pipe (2), cable (3), water injection valve (4), centrifugal pump (5), eliminator (6), protector (11), motor (12), kuppe (8); It is characterized in that: said water injection valve (4) is installed between centrifugal pump (5) and the oil pipe (2), and water injection valve (4) is made up of valve body (14), slide block (16), spring (19), stop collar (20), supporting base (21), adjusting nut (22), lower contact (23), valve ball (24); Be evenly equipped with a plurality of water injection holes (17) on the inwall of said valve body working chamber (18); Interstitial hole (15) is arranged in the middle of the said slide block (16), and slide block (16) top is by step (25) location, and slide block (16) bottom is located by stop collar (20); Slide block (16) moves in working chamber (18), and slide block (16) is when moving to top, and water injection hole (17) is by slide block (16) shutoff, and slide block (16) is when moving to the bottom, and water injection hole (17) is opened.
2. the application process of the positive water filling integrated pipe column of electric motor drive oil pump system is characterized in that may further comprise the steps:
1. lower tubular column
Water injection valve (4) is installed between centrifugal pump (5) and the oil pipe (2), with the tubing string G.I.H;
2. pitching
When oil well needs water filling to replace oil, drop into valve ball (24) from oil pipe (2) and be seated on the interstitial hole (15) of slide block (16) the downward pathway closure of slide block (16);
3. build the pressure
Build the pressure on oil pipe (2) top, when pressure at 0-20MPa with the interior while during greater than the preset pressure value of spring (19), valve ball (24) and slide block (16) are displaced downwardly to bottom dead centre together, water injection hole (17) passage is opened;
4. positive water filling
Carry out water filling from oil pipe (2), inject water and get into the oil jacket annular space,, thereby get into oil reservoir (13) through kuppe (8) outside from water injection hole (17);
5. drag for ball
After water filling is accomplished, salvage valve ball (24), spring (19) recovers the preset pressure situation, and slide block moves on (16), and the oil jacket annulus access is closed, thereby can realize mixing normally rare production and positive well-flushing or just annotate technology such as thin oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103526250A CN102434136A (en) | 2011-11-10 | 2011-11-10 | Electric pump oil production positive water injection integral pipe column and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103526250A CN102434136A (en) | 2011-11-10 | 2011-11-10 | Electric pump oil production positive water injection integral pipe column and application method thereof |
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| CN102434136A true CN102434136A (en) | 2012-05-02 |
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| CN2011103526250A Pending CN102434136A (en) | 2011-11-10 | 2011-11-10 | Electric pump oil production positive water injection integral pipe column and application method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN113969762A (en) * | 2021-10-20 | 2022-01-25 | 陕西延长石油金石钻采设备有限公司 | A water injection valve device |
| CN114876786A (en) * | 2022-04-27 | 2022-08-09 | 张嘉欣 | Electric submersible pump capable of positively flushing well |
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| CN102071916A (en) * | 2009-11-25 | 2011-05-25 | 大港油田集团有限责任公司 | Oil-water separate mining string of bottom water reservoir and jet pump thereof |
| CN201874543U (en) * | 2010-11-26 | 2011-06-22 | 大港油田集团有限责任公司 | Underground boosting water injection process pipe string |
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2011
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408664A (en) * | 1980-09-26 | 1983-10-11 | Jack H. Santee | Secondary oil recovery method |
| CN2668849Y (en) * | 2003-12-13 | 2005-01-05 | 胜利石油管理局无杆采油泵公司 | Underground oil-water-separation extracting-injecting apparatus of electric immersible oil pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997577A (en) * | 2020-03-25 | 2020-11-27 | 中国海洋石油集团有限公司 | Heat-insulation type canned electric submersible pump injection-production integrated tubular column structure and technological method |
| CN111997577B (en) * | 2020-03-25 | 2022-05-20 | 中国海洋石油集团有限公司 | Injection-production integrated tubular column structure of heat-insulation canned electric submersible pump and technological method |
| CN113969762A (en) * | 2021-10-20 | 2022-01-25 | 陕西延长石油金石钻采设备有限公司 | A water injection valve device |
| CN114876786A (en) * | 2022-04-27 | 2022-08-09 | 张嘉欣 | Electric submersible pump capable of positively flushing well |
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Application publication date: 20120502 |