CN101852637A - Method for accurately metering oil input of oil field united station - Google Patents
Method for accurately metering oil input of oil field united station Download PDFInfo
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- CN101852637A CN101852637A CN 201010161101 CN201010161101A CN101852637A CN 101852637 A CN101852637 A CN 101852637A CN 201010161101 CN201010161101 CN 201010161101 CN 201010161101 A CN201010161101 A CN 201010161101A CN 101852637 A CN101852637 A CN 101852637A
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- 238000000034 method Methods 0.000 title claims abstract description 78
- 239000007788 liquid Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims description 38
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 80
- 239000010779 crude oil Substances 0.000 abstract description 7
- 238000004062 sedimentation Methods 0.000 abstract 6
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a method for accurately metering oil input of an oil field united station, which is used for the metering of crude oil of the oil field united station. In the method, a differential pressure method is adopted, the temperature of a pressure pipe is kept equal to that of a sedimentation tank by arranging the pressure pipe inside and outside the tank, and all absolute oil and all water in an entire oil tank are considered as two wholes; a liquid level is supposed to be constant, only the variation of the absolute oil in the sedimentation tank is measured by using a dehydrator differential pressure metering device without measurement of the total amount of oil and water in the sedimentation tank. The method consists of a sedimentation tank differential pressure metering method, a buffer tank differential pressure metering method and a dehydrator differential pressure metering method or consists of a sedimentation tank differential pressure method, a buffer tank differential pressure method and a dehydrator differential pressure method and is implemented through a sedimentation tank differential pressure method device, a buffer tank differential pressure method device and a dehydrator differential pressure method device. The device consists of a differential pressure sensor, a pressure pipe, a liquid level meter, a computer, a multidirectional pressure valve, a multidirectional pressure valve seat and a multidirectional pressure valve faucet, wherein the differential pressure sensor is connected with the pressure pipe through a screw thread; the multidirectional pressure valve is connected with the pressure pipe through a screw thread; and the multidirectional pressure valve seat is in tolerance fit with the multidirectional pressure valve faucet. The method solves the problems of high labor intensity and big metering error existing in a conventional method and can be widely applied to crude oil metering operation of the oil field united station.
Description
Technical field:
The present invention relates to the method for accurately metering oil input of oil field united station that a kind of field joint stations crude oil measurement is used.
Background technology:
Crude oil metering at present mainly is that the process that adopts variable quantity by field joint stations storage tank net fuel to calculate oil field crude oil production every day is called and makes an inventory of goods in a warehouse, the order of accuarcy of making an inventory of goods in a warehouse directly has influence on the management and the decision-making of field produces, field joint stations is made an inventory of goods in a warehouse and is adopted the human metering mode always, promptly purify oil tank and adopt hand gauging, the chemical examination bearing analysis, the slurry tank employing is manually dragged for sample and is determined profit circle position, chemically examine moisture method and determine the net fuel of slurry tank, this method labour intensity is big, error in dipping is also bigger, main cause is that the measuring accuracy of slurry tank water-oil interface is low, because the oil-water media in the slurry tank is subjected to temperature, oil mass, the influence of profit density difference and emulsification of crude oil degree, cause the water-oil interface complexity, the measuring accuracy of slurry tank crude oil water content is low, the oil reserve of the hydroextractor of horizontal moisture oil tank is considered as constant, influences computational accuracy.
Summary of the invention:
The purpose of this invention is to provide a kind of method for accurately metering oil input of oil field united station, it is big that this method has solved the existing method labour intensity that exists in the prior art, the problem that error in dipping is big.
The technical solution adopted for the present invention to solve the technical problems is: this method employing pressure differential method, utilize jar outer or jar interior connecting pipe of installing, and identical maintenance with the slurry tank temperature equates.The connecting pipe top is identical with innage, and connecting pipe bottom is connected with pot bottom and differential pressure pickup (P is installed
Tn), with the whole absolute oil in the whole oil tank and all water consider that as two integral body suppose that liquid level is constant, the total amount of profit in the accident slurry tank is only measured the variable quantity of absolute oil in the slurry tank, at first, measures the pressure reduction and the slurry tank liquid level of first day differential pressure pickup:
P
1=Δ P
T1+ H
Oilγ
Oil+ H
Waterγ
Water
Pressure in the P-connecting pipe
Δ P
T1Pressure in the-connecting pipe and the jar pressure differential at the end
H
Oil--the height of-absolute oil face
γ
Oil--the density of pure oil
H
Water--the height of water purification face
γ
Water--the density of pure water
Measure the pressure reduction and the slurry tank liquid level of second day differential pressure pickup:
P
2=Δ P
T2+ (H
Oil+ Δ H
Oil) γ
Oil+ (H
Water-Δ H
Oil) γ
Water
Δ H
Oil: pure oily change in elevation=(Δ P
T2-Δ P
T1)/(γ
Water-γ
Oil)
P
2-P
1: measure number
Since in the tubing string hydraulic balance jar in most of pressure, the amount of pressure detection is reduced to the 1/10-1/5 of jar bottom pressure, measuring accuracy improves 5-10 doubly.Density with oil is 850kg/m
3Oil product be example: the oil position that is situated between changes a 2m, and the maximum error of metering is 1mm, as Fig. 1.
Oil inlet quantity high-precision measuring method is made up of slurry tank, surge tank, hydroextractor pressure differential method metering method: slurry tank pressure differential method measuring apparatus is to utilize outside the jar or in the jar to install connecting pipe additional, 1-10 its top of connecting pipe is identical with slurry tank overflow groove height, the slurry tank overflow groove is measured the variable quantity of absolute oil by measurement liquid level variation and moisture variation with top, the slurry tank overflow groove is measured according to pressure differential method with the lower part, as Fig. 2;
Surge tank pressure differential method metering method: utilize outside the jar or in the jar and install connecting pipe additional, utilize the moisture constant substantially characteristics in liquid level top, manual detection goes out the moisture variation in liquid level top, liquid level under the liquid level under first connecting pipe top and the variable quantity of measuring absolute oil with measurement liquid level variation and moisture variation, the liquid level first connecting pipe measure according to pressure differential method with the lower part, as Fig. 3; Hydroextractor differential manometer metering method: the bottom that multinomial pilot valve is installed in horizontal moisture oil tank, the characteristics of multidirectional pilot valve are 1-10 the conductings in order that import is adjacent, multidirectional pilot valve is connected with horizontal moisture oil tank by connecting pipe, and water will be full of in the connecting pipe, connecting pipe divides the people n-1 five equilibrium with horizontal moisture oil tank level, controls multidirectional pilot valve and makes differential pressure pickup measure the pressure reduction of adjacent tubing string successively.Be respectively Δ P
1.1Δ P
1 (N-1)Measurement was respectively Δ P again at second day
2.1Δ P
2. (N-1)Approximate to regard the cross section as be rectangle with every layer in horizontal moisture oil tank, measures every layer oil inlet quantity according to pressure differential method, and the measurable oil inlet quantity that goes out hydroextractor that adds up is as Fig. 4.
The invention has the beneficial effects as follows: the present invention with pressure differential method and Level Detection method in conjunction with high-precision measuring and the automatic gauge of having realized that field joint stations slurry tank oil inlet quantity changes.Press valves to realize that in conjunction with pressure differential method and Level Detection method high-precision measuring and automatic gauge, the many admittances of application that field joint stations surge tank oil inlet quantity changes press valve, utilize the method for stratified stoichiometric to solve the long-pending uneven problem in horizontal moisture oil tank longitudinal cross-section with many admittances.Can realize variable quantity with the oil reserve of the horizontal moisture oil tank of pressure differential method stratified stoichiometric.Realize field joint stations high precision and automatic inventory-making.
Description of drawings:
Fig. 1 is a pressure reduction metering principle schematic of the present invention.
Fig. 2 is a slurry tank pressure differential method measuring apparatus synoptic diagram of the present invention.
Fig. 3 is a surge tank pressure differential method measuring apparatus synoptic diagram of the present invention.
Fig. 4 is a hydroextractor pressure differential method measuring apparatus synoptic diagram of the present invention.
Among the figure 1, differential pressure pickup, 2, connecting pipe, 3, liquid level gauge, 4, computing machine, 5, multidirectional pilot valve, 6, multidirectional pilot valve seat, 7, the cock of multidirectional pilot valve.
Embodiment:
Method for accurately metering oil input of oil field united station is the employing pressure differential method, utilizes jar outer or jar interior connecting pipe of installing, and identical maintenance with the slurry tank temperature equates; The connecting pipe top is identical with innage, and connecting pipe bottom is connected with pot bottom and differential pressure pickup (P is installed
Tn), the whole absolute oil in the whole oil tank and whole water are considered as two integral body, suppose that liquid level is constant, the total amount of profit in the accident slurry tank, only measure the variable quantity of absolute oil in the slurry tank, adopt the pressure reduction and the slurry tank liquid level of the differential pressure pickup of measuring first day, utilize formula:
P
1=Δ P
T1+ H
Oilγ
Oil+ H
Waterγ
Water
P
1: the pressure in the pilot tubing string; Δ P
T1: pressure in the connecting pipe and the jar pressure differential at the end; H
Oil: the height of absolute oil face; γ
Oil: the density of pure oil; H
Water: the height of water purification face; γ
Water: the density of pure water;
Measure the pressure reduction and the slurry tank liquid level of second day differential pressure pickup, utilize formula:
P
2=Δ P
T2+ (H
Oil+ Δ H
Oil) γ
Oil+ (H
Water-Δ H
Oil) γ
Water
Δ H
Oil: pure oily change in elevation
Δ H
Oil: pure oily change in elevation=(Δ P
T2-Δ P
T1)/(γ
Water-γ
Oil)
The amount of pressure detection is reduced to the 1/10-1/5 of jar bottom pressure, and measuring accuracy improves 5-10 doubly.In Fig. 1, O represents oil, and W represents water, differential pressure pickup 1 and connecting pipe 2 screwed connections;
Oil inlet quantity high-precision measuring method is by slurry tank, surge tank, hydroextractor pressure differential method metering method is formed: slurry tank pressure differential method metering method be it of realizing by slurry tank pressure differential method measuring apparatus be utilize jar outer or jar in install connecting pipe 2 additional, 1-10, connecting pipe 2 its tops are identical with slurry tank overflow groove height, the slurry tank overflow groove is measured the variable quantity of absolute oil by measurement liquid level variation and moisture variation with top, the slurry tank overflow groove is measured according to pressure differential method with the lower part, in Fig. 2, g represents gas, o represents oil, w represents water, slurry tank pressure differential method measuring apparatus, by differential pressure pickup 1, connecting pipe 2, liquid level gauge 3, computing machine 4 is formed: differential pressure pickup 1 and connecting pipe 2 screwed connections, differential pressure pickup 1, liquid level gauge 3 all is connected with computing machine 4 circuits.Surge tank pressure differential method metering method: it is realized by surge tank pressure differential method measuring apparatus, it is to utilize outside the jar or in the jar to install connecting pipe 2 additional, utilize the moisture constant substantially characteristics in liquid level top, manual detection goes out the moisture variation in liquid level top, liquid level under the liquid level under first connecting pipe top and the variable quantity of measuring absolute oil with measurement liquid level variation and moisture variation, the liquid level first connecting pipe measure according to pressure differential method with the lower part, in Fig. 3, surge tank pressure differential method measuring apparatus is made up of differential pressure pickup 1, connecting pipe 2, multidirectional pilot valve 5; Differential pressure pickup 1 and connecting pipe 2 screwed connections, multidirectional pilot valve 5 and differential pressure pickup 1 screwed connection.Hydroextractor pressure differential method metering method: it is realized by hydroextractor pressure differential method measuring apparatus, multidirectional pilot valve 5 is installed in the bottom of horizontal moisture oil tank, the characteristics of multidirectional pilot valve 5 are 1-10 conductings in order that import is adjacent, multidirectional pilot valve 5 is connected with horizontal moisture oil tank, and connecting pipe 2 is full of water.Connecting pipe divides the people n-1 five equilibrium with horizontal moisture oil tank level, controls multidirectional pilot valve 5 and makes differential pressure pickup 1 measure the pressure reduction of adjacent tubing string successively.Be respectively Δ P
1.1Δ P
1. (N-1)Measurement was respectively Δ P again at second day
2.1Δ P
2. (N-1)Approximate to regard the cross section as be rectangle with every layer in horizontal moisture oil tank, measures every layer oil inlet quantity according to pressure differential method, and adding up to calculate the oil inlet quantity of hydroextractor; In Fig. 4, hydroextractor pressure differential method measuring apparatus is made up of differential pressure pickup 1, connecting pipe 2, multidirectional pilot valve 5, multidirectional pilot valve seat 6, multidirectional pilot valve cock 7; This 2 is screwed connection, multidirectional pilot valve seat 6 and multidirectional pilot valve cock 7 tolerance fit differential pressure pickup 1 and connecting pipe 2, multidirectional pilot valve 5 and pilot.
Claims (2)
1. method for accurately metering oil input of oil field united station is characterized in that: this method adopts pressure differential method, utilize jar outer or jar in a connecting pipe is installed, identical maintenance with the slurry tank temperature equates; The connecting pipe top is identical with innage, and connecting pipe bottom is connected with pot bottom and differential pressure pickup P is installed
T1, with the whole absolute oil in the whole oil tank and all water consider that as two integral body suppose that liquid level is constant, the total amount of profit in the accident slurry tank is only measured the variable quantity of absolute oil in the slurry tank; Show from detection formula result of calculation: the amount of pressure detection is the 1/10-1/5 that reduces to jar bottom pressure, and measuring accuracy improves 5-10 doubly; Oil inlet quantity high-precision measuring method is made up of slurry tank, surge tank, hydroextractor pressure differential method metering method: slurry tank pressure differential method metering method is to utilize outside the jar or in the jar to install connecting pipe (2) additional, 1-10, its top of connecting pipe (2) is identical with slurry tank overflow groove height, by measuring the variable quantity that absolute oil is measured in liquid level variation and moisture variation, measure according to pressure differential method with the lower part by the slurry tank overflow groove with top for the slurry tank overflow groove; Surge tank pressure differential method metering method: utilize outside the jar or in the jar and install connecting pipe (2) additional, utilize the moisture constant substantially characteristics in liquid level top, manual detection goes out the moisture variation in liquid level top, liquid level under the liquid level under first connecting pipe top and the variable quantity of measuring absolute oil with measurement liquid level variation and moisture variation, the liquid level first connecting pipe measure according to pressure differential method with the lower part; Hydroextractor differential manometer metering method: the bottom that multidirectional pilot valve 5 is installed in horizontal moisture oil tank, the characteristics of multidirectional pilot valve (5) are 1-10 the conductings in order that import is adjacent, multidirectional pilot valve (5) is connected with horizontal moisture oil tank, and connecting pipe (2) is full of water; Connecting pipe divides the people n-1 five equilibrium with horizontal moisture oil tank level, controls multidirectional pilot valve (5), makes differential pressure pickup (1) measure the pressure reduction of adjacent tubing string successively; Be respectively Δ P
1.1Δ P
1. (N-1)Measurement was respectively Δ P again at second day
2.1Δ P
2. (N-1)Approximate to regard the cross section as be rectangle with every layer in horizontal moisture oil tank, measures every layer oil inlet quantity according to pressure differential method, and the measurable oil inlet quantity that goes out hydroextractor adds up;
2. slurry tank, surge tank, hydroextractor pressure differential method measuring apparatus of implementing this method, form by differential pressure pickup (1), connecting pipe (2), liquid level gauge (3), computing machine (4), multidirectional pilot valve (5), multidirectional pilot valve seat (6), multidirectional pilot valve cock (7), it is characterized in that: differential pressure pickup (1) is screwed connection with connecting pipe (2), multidirectional pilot valve (5) with pilot these (2), differential pressure pickup (1), liquid level gauge (3) all are connected with computing machine (4) circuit, multidirectional pilot valve seat (6) and multidirectional pilot valve cock (7) tolerance fit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161101 CN101852637A (en) | 2010-05-04 | 2010-05-04 | Method for accurately metering oil input of oil field united station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010161101 CN101852637A (en) | 2010-05-04 | 2010-05-04 | Method for accurately metering oil input of oil field united station |
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|---|---|
| CN101852637A true CN101852637A (en) | 2010-10-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411041A (en) * | 2011-11-23 | 2012-04-11 | 娄跃辉 | Device for testing average water content of uniform liquid in two-point vertical storage tank |
| CN103127746A (en) * | 2011-11-23 | 2013-06-05 | 中国石油化工股份有限公司 | Heavy dirty oil storage tank oil-water separation detection discharging method |
| CN106841329A (en) * | 2017-01-21 | 2017-06-13 | 张清 | A kind of crude oil water content on-line monitoring system |
| CN107321168A (en) * | 2017-08-17 | 2017-11-07 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of wet flue gas desulfurization absorption tower pallet liquid holdup monitoring system |
| CN107796478A (en) * | 2017-09-18 | 2018-03-13 | 唐山首钢京唐西山焦化有限责任公司 | Method and system for measuring height of boundary layer of tar and ammonia water |
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| WO2009078734A1 (en) * | 2007-12-19 | 2009-06-25 | Statoilhydro Asa | Method and equipment for determining the interface between two or more fluid phases |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411041A (en) * | 2011-11-23 | 2012-04-11 | 娄跃辉 | Device for testing average water content of uniform liquid in two-point vertical storage tank |
| CN103127746A (en) * | 2011-11-23 | 2013-06-05 | 中国石油化工股份有限公司 | Heavy dirty oil storage tank oil-water separation detection discharging method |
| CN102411041B (en) * | 2011-11-23 | 2014-08-06 | 娄跃辉 | Device for testing average water content of uniform liquid in two-point vertical storage tank |
| CN103127746B (en) * | 2011-11-23 | 2014-10-29 | 中国石油化工股份有限公司 | Heavy dirty oil storage tank oil-water separation detection discharging method |
| CN106841329A (en) * | 2017-01-21 | 2017-06-13 | 张清 | A kind of crude oil water content on-line monitoring system |
| CN107321168A (en) * | 2017-08-17 | 2017-11-07 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of wet flue gas desulfurization absorption tower pallet liquid holdup monitoring system |
| CN107796478A (en) * | 2017-09-18 | 2018-03-13 | 唐山首钢京唐西山焦化有限责任公司 | Method and system for measuring height of boundary layer of tar and ammonia water |
| CN107796478B (en) * | 2017-09-18 | 2020-05-26 | 唐山首钢京唐西山焦化有限责任公司 | Method and system for measuring height of boundary layer of tar and ammonia water |
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Application publication date: 20101006 |