CN103133323A - Clearance fluid-loss test method based on oil-well pump performance testing device - Google Patents
Clearance fluid-loss test method based on oil-well pump performance testing device Download PDFInfo
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- CN103133323A CN103133323A CN 201110404430 CN201110404430A CN103133323A CN 103133323 A CN103133323 A CN 103133323A CN 201110404430 CN201110404430 CN 201110404430 CN 201110404430 A CN201110404430 A CN 201110404430A CN 103133323 A CN103133323 A CN 103133323A
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Abstract
The invention discloses a clearance fluid-loss test method based on an oil-well pump performance testing device. The clearance fluid-loss test method based on the oil-well pump performance testing device includes that (a), an oil-well pump without installation of a plunger assembly is flatwise placed on a support; (b), a group of cylindrical steel ejecting rods capable of limiting the plunger assembly to be positioned at a test position is installed in a pump cylinder; (c), the plunger assembly matched with the pump cylinder is installed; (d), a pressure test joint is screwed up tightly on a pump cylinder coupling hoop; (e), a low-pressure liquid charging pump is started to charge the pump cylinder until the pump cylinder is full of diesel oil, and meanwhile the plunger assembly is also delivered to the positions of the ejecting rods by the diesel oil in a pressurized mode; (f), the low-pressure liquid charging pump is shut down, a high-pressure test pump is started, the diesel oil is continued to be filled into the pump cylinder, and meanwhile, the rising situation of a gauge hand of a pressure gauge is closely watched; and (g), when the gauge hand rises to a fluid-loss test pressure and the quantity of the diesel oil leaked from an outlet of the lower end of the pump cylinder is stable, a measuring pot is used to receive the leaked and lost diesel oil for a minute, and the quantity of the diesel oil in the measuring pot is measured. The clearance fluid-loss test method based on the oil-well pump performance testing device can be used for measuring the clearance fluid-loss quantity of the oil-well pump, and is accurate in test result, simple in test steps, speedy in test, and reduced in test cost.
Description
Technical field
The present invention relates to a kind of gap leaking loss amount test method based on the oil well pump performance test apparatus.
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 oil well pump performance test apparatus of high oil-gas ratio and oil well pump performance test apparatus; 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.
After oil well pump is produced, need to test its gap wastage, thereby provide Data support for its use.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of gap leaking loss amount test method based on the oil well pump performance test apparatus is provided, should can measure the gap leaking loss amount of oil well pump based on the gap leaking loss amount test method of oil well pump performance test apparatus, and test result is accurate, testing procedure is simple, test is quick, has reduced testing cost.
Purpose of the present invention is achieved through the following technical solutions: the gap leaking loss amount test method based on the oil well pump performance test apparatus comprises the following steps:
The oil well pump that (a) will be unkitted plunger piston assembly lies on support;
(b) can limit plunger piston assembly at the cylindrical steel push rod of test spots localization in-built one group of pump barrel;
(c) pack into plunger piston assembly with pump barrel pairing;
(d) tighten action pressure-testing joint on the pump barrel box cupling;
(e) drive the low pressure charging pump diesel oil is full of pump barrel, simultaneously plunger piston assembly also is sent to the push rod place by diesel oil;
(f) close the low pressure charging pump, open the high-potting pump, continue to inject diesel oil in pump barrel, pay close attention to simultaneously gauge hand rising situation;
(g) rise to fluid-loss test pressure when pointer, and when pump barrel lower end outlet spills the diesel oil amount and stablize, connect leakage diesel oil one minute with measuring cup, measure diesel oil quantity in measuring cup.
In described step (b), the external diameter of cylindrical steel push rod is than the little 3-5mm of pump barrel internal diameter.
In described step (b), pump barrel length is equal to or less than 3m, only surveys its underpart wastage
In described step (g), fluid-loss test pressure is 10MPa.
The oil well pump performance test apparatus that the present invention is used mainly is made of the action pressure-testing joint that is connected with oil well pump and the low pressure charging pump system and the high-pressure liquid-filling pumping system that are connected with oil well pump inside respectively by action pressure-testing joint.
Be provided with the voltage stabilizing bag between described low pressure charging pump system and high-pressure liquid-filling pumping system and action pressure-testing joint.
Described low pressure charging pump system mainly is made of the low pressure charging pump that is connected with action pressure-testing joint, and described low pressure charging pump is connected with low pressure gauge.
Described high-pressure liquid-filling pumping system mainly is made of the high-pressure liquid-filling pump that is connected with action pressure-testing joint, and described high-pressure liquid-filling pump is connected with high-pressure manometer.
In sum, the invention has the beneficial effects as follows: can measure the gap leaking loss amount of oil well pump, and test result is accurate, testing procedure is simple, and test is quick, has reduced testing cost.
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 gap leaking loss amount test method based on the oil well pump performance test apparatus that the present invention relates to comprises the following steps:
The oil well pump that (a) will be unkitted plunger piston assembly lies on support;
(b) can limit plunger piston assembly at the cylindrical steel push rod of test spots localization in-built one group of pump barrel;
(c) pack into plunger piston assembly with pump barrel pairing;
(d) tighten action pressure-testing joint on the pump barrel box cupling;
(e) drive the low pressure charging pump diesel oil is full of pump barrel, simultaneously plunger piston assembly also is sent to the push rod place by diesel oil;
(f) close the low pressure charging pump, open the high-potting pump, continue to inject diesel oil in pump barrel, pay close attention to simultaneously gauge hand rising situation;
(g) rise to fluid-loss test pressure when pointer, and when pump barrel lower end outlet spills the diesel oil amount and stablize, connect leakage diesel oil one minute with measuring cup, measure diesel oil quantity in measuring cup.
In described step (b), the external diameter of cylindrical steel push rod is than the little 3-5mm of pump barrel internal diameter.
In described step (b), pump barrel length is equal to or less than 3m, only surveys its underpart wastage
In described step (g), fluid-loss test pressure is 10MPa.
The present invention's oil well pump performance test apparatus used mainly is made of the action pressure-testing joint 2 that is connected with oil well pump 1 and the low pressure charging pump system 3 and the high-pressure liquid-filling pumping system 4 that are connected with oil well pump 1 inside respectively by action pressure-testing joint 2 as shown in Figure 1.
Be provided with voltage stabilizing bag 5 between described low pressure charging pump system 3 and high-pressure liquid-filling pumping system 4 and action pressure-testing joint 2.
Described low pressure charging pump system 3 mainly is made of the low pressure charging pump 6 that is connected with action pressure-testing joint 2, and described low pressure charging pump 6 is connected with low pressure gauge 7.
Described high-pressure liquid-filling pumping system 4 mainly is made of the high-pressure liquid-filling pump 8 that is connected with action pressure-testing joint 2, and described high-pressure liquid-filling pump 8 is connected with high-pressure manometer 9.
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 (4)
1. based on the gap leaking loss amount test method of oil well pump performance test apparatus, it is characterized in that, comprise the following steps:
The oil well pump that (a) will be unkitted plunger piston assembly lies on support;
(b) can limit plunger piston assembly at the cylindrical steel push rod of test spots localization in-built one group of pump barrel;
(c) pack into plunger piston assembly with pump barrel pairing;
(d) tighten action pressure-testing joint on the pump barrel box cupling;
(e) drive the low pressure charging pump diesel oil is full of pump barrel, simultaneously plunger piston assembly also is sent to the push rod place by diesel oil;
(f) close the low pressure charging pump, open the high-potting pump, continue to inject diesel oil in pump barrel, pay close attention to simultaneously gauge hand rising situation;
(g) rise to fluid-loss test pressure when pointer, and when pump barrel lower end outlet spills the diesel oil amount and stablize, connect leakage diesel oil one minute with measuring cup, measure diesel oil quantity in measuring cup.
2. the gap leaking loss amount test method based on the oil well pump performance test apparatus according to claim 1, is characterized in that, in described step (b), the external diameter of cylindrical steel push rod is than the little 3-5mm of pump barrel internal diameter.
3. the gap leaking loss amount test method based on the oil well pump performance test apparatus according to claim 1, is characterized in that, in described step (b), pump barrel length is equal to or less than 3m, only surveys its underpart wastage.
4. the gap leaking loss amount test method based on the oil well pump performance test apparatus according to claim 1, is characterized in that, in described step (g), fluid-loss test pressure is 10MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110404430 CN103133323A (en) | 2011-11-28 | 2011-11-28 | Clearance fluid-loss test method based on oil-well pump performance testing device |
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| CN 201110404430 CN103133323A (en) | 2011-11-28 | 2011-11-28 | Clearance fluid-loss test method based on oil-well pump performance testing device |
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| CN103133323A true CN103133323A (en) | 2013-06-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926042A (en) * | 2014-04-04 | 2014-07-16 | 吉林大学 | Simple detection device for leakage and sealing between pump cylinder of oil well pump and plunger |
| CN106246529A (en) * | 2016-09-27 | 2016-12-21 | 中国石油天然气股份有限公司 | Oil-well pump parameter testing system |
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2011
- 2011-11-28 CN CN 201110404430 patent/CN103133323A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926042A (en) * | 2014-04-04 | 2014-07-16 | 吉林大学 | Simple detection device for leakage and sealing between pump cylinder of oil well pump and plunger |
| CN103926042B (en) * | 2014-04-04 | 2016-03-23 | 吉林大学 | Wastage and sealing simple detection device between oil well pump barrel and plunger |
| CN106246529A (en) * | 2016-09-27 | 2016-12-21 | 中国石油天然气股份有限公司 | Oil-well pump parameter testing system |
| CN106246529B (en) * | 2016-09-27 | 2019-01-18 | 中国石油天然气股份有限公司 | Oil-well pump parameter testing system |
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Application publication date: 20130605 |