CN103133311A - Oil pumping technology based on javelin valve anti-gas pump - Google Patents
Oil pumping technology based on javelin valve anti-gas pump Download PDFInfo
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- CN103133311A CN103133311A CN 201110445221 CN201110445221A CN103133311A CN 103133311 A CN103133311 A CN 103133311A CN 201110445221 CN201110445221 CN 201110445221 CN 201110445221 A CN201110445221 A CN 201110445221A CN 103133311 A CN103133311 A CN 103133311A
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Abstract
The invention discloses an oil pumping technology based on a javelin valve anti-gas pump. The oil pumping technology based on the javelin valve anti-gas pump includes that in an upstroke, an oil pumping rod drives a center rod to move upwards, a javelin valve is closed, a plunger is driven to move upwards, oil liquid on the upper portion of the plunger is lifted to the ground, and meanwhile, the plunger lower portion space becomes large, pressure is reduced, and oil is filled in a pump; and in a down stroke, the oil pumping rod drives the center rod to move, pushes the plunger to descend, and enables the javelin valve to be forcibly opened simultaneously, gas-oil mixtures in a pump lower cavity can smoothly enter an oil tube through the plunger, and therefore the anti-gas effect is achieved. The mechanical opening and closing is driven by the oil pumping rod, and the practice that a delivery valve of a conventional pump is opened and closed through a liquid pressure in the pump is abandoned; the oil pumping rod is in floating connection with the plunger, the oil pumping rod and the plunger can rotate relative to each other, and therefore the deformation factors and the number of breaking disconnection times of the oil pumping rod are reduced; and the javelin valve is opened and closed always through one face when working, and the structure determines that the javelin valve is short in service life.
Description
Technical field
The present invention relates to a kind of oil pumping technique based on javelin valve gas prevention pump.
Background technique
Before 20th century, oil well pump technical development both at home and abroad is slow, to the 20 middle of century integeral tube pumping pump that just begins one's study, produces simultaneously with the bush type oil well pump.About oil well pump controversial two large problems technically: the one, whole cylinder type oil pump is good, should the bush type oil well pump; The 2nd, be to have anti-sand launder good on plunger, should be without anti-sand launder.Until the eighties in 20th century, because integeral tube pumping pump has significantly improved pump efficiency, generally approximately improve 10% than bush type oil well pump, extended the working life of plunger pump barrel pair, and can save the high-quality steel of 40% left and right, progressively replaced the bush type oil well pump, eliminated the bush type oil well pump in the scale of the relevant oil well pump of U.S. API, this is one of main technological progress of oil well pump in recent years.
The oil well pump system history of existing more than 100 year, along with developing rapidly of petroleum industry, oil well pump develops into by simple bush pump the multifunctional oil-well pump that pump efficiency is high, energy-conservation and adapt to different needs.
In order to adapt to the needs of oil production technology, develop successively the oil well pump of various specific types, as be applicable to the double-acting pump of large lifting rate; Be applicable to the gas prevention pumps such as the javelin valve gas prevention pump of high oil-gas ratio and javelin valve gas prevention pump; Be applicable to take out streamlined pump and the hydraulic feedback pump of viscous crude; Be applicable to the self lubricating sand-control pump of sand output well, telescopic three pipes are put the sand-control pumps such as sand pump and sand control holddown; Be applicable to the gap bridge pump of deep well; Be applicable to the inclined shaft deep-well pump of deflecting well oil withdrawal; Be applicable to the hollow pump of pump test or heating, for what reduce submergence bar jet flow pressurizing pump etc. arranged.In order to extend oil well pump working life, improving aspect the oil well pump component, mainly take to improve the durability of pump plunger and barrel pair and the reliability of valve group.
Pump barrel has adopted multiple raw material and heat treatment process, except nitriding, has developed carbon, helium and has oozed altogether and Hard Chromium Plating Technology.Plunger has also developed surfacing nickel-base alloy and the technique such as ceramic coated except adopting Hard Chromium Plating Technology.It should be noted that in order to improve the durability of pump barrel-trunk piston set, according to the characteristics Proper Match pump barrel of oil well and the material of plunger, adopt Hard Chromium Plating Technology better as pump barrel in the high salinity medium, and plunger also adopt the hard chromium plating effect unsatisfactory.In order to improve valve group reliability and anti-anti-corrosive properties, the general stainless steels of material substitution such as high carbon chromium stainless steel commonly used and casting cobalt.
At the oil well of oilfield exploitation middle and later periods or the oil well of producing fluid level low oil well, particularly high gas-liquid ratio, gas is one of principal element that affects pumping efficiency of oil pump.Oil well pump exists free gas, solution gas in pump chamber (part in pump barrel between traveling valve and standing valve) in the pumping process.
During the pump upstroke, if the pressure in pump chamber is dissolved in the saturation pressure of liquid lower than gas, the gas that is dissolved in liquid will dissociate out from liquid.These gases occupy the certain volume of pump chamber, cause the degree of filling of pump to reduce, and then cause that pump efficiency descends.
During the pump down stroke, gas-liquid two-phase fluid is compressed in pump chamber, until the pump chamber internal pressure is during greater than the pressure on traveling valve top, traveling valve is just opened, and the crude oil in pump chamber is discharged.Yalve Balls of Sucker Rod Pumps in the gassiness oil well generally all can be opened hysteresis, when the occupied volume of the gas in pump chamber is enough large, not only traveling valve is not opened during down stroke, even standing valve might not opened yet during upstroke, be that intracavity gas is expanding and compression in whole upper and lower stroke, and there is no the liquid lifting, this moment, " gas lock " phenomenon appearred in oil well pump, can't work.Also often " hydraulic shock " can occur when " gas lock ", cause the vibration of rod pumping system, accelerate its damage.
For high oil-gas ratio oil reservoir in adopting the sucker rod pumping technique process, to such an extent as to affecting the unlatching of wear-resistant, free gas and solution gas make the problems such as the too low generation of extracting device of oil pump efficiency " gas lock ", all carried out more research both at home and abroad, take Counter-measures, also obtained corresponding achievement.
Both at home and abroad the technology taked of oil field mainly from reduce the gassiness that advances pump liquid than and reduce to enter two aspects that affect that the pump free gas opens pump valve and carry out.The former reduces jig frequency and adopts various gas anchors and bleed off casing gas in good time and realize mainly by increasing submergence; The latter reduces clearance volume and adopts the airlock-resistant oil pump of special construction to reach by strengthening length of stroke.This main difference wherein is that the gas-tight principle of airlock-resistant oil pump is different, reduces the anti-gas lock traveling valve of starting differential pressure as employing, adopts the traveling valve of annular valve or mechanical forced unlatching to reduce free gas to the impact of traveling valve unlatching; Adopting the gas prevention pump of gas-liquid displacement or adopting the oil well pump of two stage compression is that the oil gas that reduces in compression chamber recently improves pump efficiency.So above-mentioned gas prevention pump is all on common oil well pump basis, valve body or cavity to have been carried out some to improve, or increases the Novel gas-tight pump that unique construction forms.Above-mentioned improvement all has certain effect, can prevent preferably " gas lock ", improves pump efficiency.But difficulty of processing is large, and the life-span be difficult for to improve, and has increased operation easier when using.
In the high gas-liquid ratio oil well, gas is very serious on the impact of pump efficiency.These gases occupy the partial volume of pump chamber, can reduce the degree of filling in pump chamber, cause Yalve Balls of Sucker Rod Pumps to be opened and lag behind, and " gas lock " phenomenon even occurs.Also " hydraulic shock " can occur when " gas lock ", cause the vibration of rod pumping system, accelerate its damage.Result causes the frequent operation of pumping well, and pump detection period is shortened, and development cost increases.Therefore study that pump efficiency is high, the life-span long, operation and maintenance easily the Novel gas-tight pump have certain theory significance and use value, will create great economic benefit.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of oil pumping technique based on javelin valve gas prevention pump is provided, should be opened and closed by the sucker rod driving mechanical based on the oil pumping technique of javelin valve gas prevention pump, rather than the outlet valve of conventional pumps opens and closes by fluid pressure in pump; Be floating connection between sucker rod and plunger, can relatively rotate between sucker rod and plunger, take off number of times thereby can reduce the deformation factor of sucker rod and break; The javelin valve always comes opening and closing by a face in when work, thus this structures shape its life-span shorter.
Purpose of the present invention is achieved through the following technical solutions: the oil pumping technique based on javelin valve gas prevention pump, it is characterized in that, and comprise the following steps:
Upstroke: sucker rod drives on center-pole and moves, and the javelin valve cuts out, and drives on plunger and moves, and the fluid of plunger upper part is given rise to ground, and the plunger lower space becomes large simultaneously, and is oil-filled in pressure decreased, pump;
Down stroke: sucker rod drives center-pole and moves, and promotes plunger descending, simultaneously the javelin valve is opened by force, and the gas mixture of pump cavity of resorption can waltz through plunger and enter oil pipe, thereby reaches the effect of gas-tight.
Described upstroke and down stroke are completed respectively once, and oil well pump is completed once circulation, so goes round and begins again, and repeats circulation.
The javelin valve gas prevention pump that the present invention is used mainly is made of pump barrel, the valve rod that pump barrel section is set, the javelin valve that is connected to the valve rod lower end, the standing valve assembly that is connected to the plunger of valve rod upper end and is arranged on the pump barrel bottom.
Be provided with box cupling on the upper end outer side wall of described pump barrel and lower end outer side wall.
Described plunger is contained in valve rod by quick release coupling.
Described plunger comprises hard plunger body and soft plunger body.
In sum, the invention has the beneficial effects as follows: opened and closed by the sucker rod driving mechanical, rather than the outlet valve of conventional pumps opens and closes by fluid pressure in pump; Be floating connection between sucker rod and plunger, can relatively rotate between sucker rod and plunger, take off number of times thereby can reduce the deformation factor of sucker rod and break; The javelin valve always comes opening and closing by a face in when work, thus this structures shape its life-span shorter.
Description of drawings
Fig. 1 is the structural representation of device therefor of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
The oil pumping technique based on javelin valve gas prevention pump that the present invention relates to comprises the following steps:
Upstroke: sucker rod drives on center-pole and moves, and the javelin valve cuts out, and drives on plunger and moves, and the fluid of plunger upper part is given rise to ground, and the plunger lower space becomes large simultaneously, and is oil-filled in pressure decreased, pump;
Down stroke: sucker rod drives center-pole and moves, and promotes plunger descending, simultaneously the javelin valve is opened by force, and the gas mixture of pump cavity of resorption can waltz through plunger and enter oil pipe, thereby reaches the effect of gas-tight.
Described upstroke and down stroke are completed respectively once, and oil well pump is completed once circulation, so goes round and begins again, and repeats circulation.
The present invention's javelin valve gas prevention pump used mainly is made of pump barrel 5, the valve rod 4 that pump barrel 5 inside are set, the javelin valve 6 that is connected to valve rod 4 lower ends, the standing valve assembly 8 that is connected to the plunger 3 of valve rod 4 upper ends and is arranged on pump barrel 5 bottoms as shown in Figure 1.
Be provided with box cupling 1 on the upper end outer side wall of described pump barrel 5 and lower end outer side wall.
Described plunger 3 is arranged on valve rod 4 by quick release coupling 2.
Described plunger 3 comprises hard plunger body and soft plunger body.
The above is only preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations that above embodiment is done are within all falling into protection scope of the present invention.
Claims (2)
1. based on the oil pumping technique of javelin valve gas prevention pump, it is characterized in that, comprise the following steps:
Upstroke: sucker rod drives on center-pole and moves, and the javelin valve cuts out, and drives on plunger and moves, and the fluid of plunger upper part is given rise to ground, and the plunger lower space becomes large simultaneously, and is oil-filled in pressure decreased, pump;
Down stroke: sucker rod drives center-pole and moves, and promotes plunger descending, simultaneously the javelin valve is opened by force, and the gas mixture of pump cavity of resorption can waltz through plunger and enter oil pipe, thereby reaches the effect of gas-tight.
2. the oil pumping technique based on javelin valve gas prevention pump according to claim 1, is characterized in that, described upstroke and down stroke are completed respectively once, and oil well pump is completed once circulation, so goes round and begins again, and repeats circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110445221 CN103133311A (en) | 2011-11-29 | 2011-11-29 | Oil pumping technology based on javelin valve anti-gas pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110445221 CN103133311A (en) | 2011-11-29 | 2011-11-29 | Oil pumping technology based on javelin valve anti-gas pump |
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| Publication Number | Publication Date |
|---|---|
| CN103133311A true CN103133311A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110445221 Pending CN103133311A (en) | 2011-11-29 | 2011-11-29 | Oil pumping technology based on javelin valve anti-gas pump |
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| CN (1) | CN103133311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452833A (en) * | 2013-08-20 | 2013-12-18 | 西安石油大学 | Anti-blocking and anti-gas drainage pump for coal-bed gas mechanical valve |
| CN113074101A (en) * | 2020-01-06 | 2021-07-06 | 中国石油化工股份有限公司 | Pull rod type gas-proof sand-proof oil-well pump |
-
2011
- 2011-11-29 CN CN 201110445221 patent/CN103133311A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452833A (en) * | 2013-08-20 | 2013-12-18 | 西安石油大学 | Anti-blocking and anti-gas drainage pump for coal-bed gas mechanical valve |
| CN113074101A (en) * | 2020-01-06 | 2021-07-06 | 中国石油化工股份有限公司 | Pull rod type gas-proof sand-proof oil-well pump |
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Application publication date: 20130605 |