CN201025024Y - Oil well pressure differentiation measurement device - Google Patents
Oil well pressure differentiation measurement device Download PDFInfo
- Publication number
- CN201025024Y CN201025024Y CNU2007201429768U CN200720142976U CN201025024Y CN 201025024 Y CN201025024 Y CN 201025024Y CN U2007201429768 U CNU2007201429768 U CN U2007201429768U CN 200720142976 U CN200720142976 U CN 200720142976U CN 201025024 Y CN201025024 Y CN 201025024Y
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- limit switch
- liquid level
- oil
- differential pressure
- oil well
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to an oil well pressure difference method gauging device for finishing the three phase measure about oil, gas and water in oil wells. Solving the problem of inaccurate measure for the three phase content about oil, gas and water in oil wells, the utility model is characterized in that the gauging device also comprises a data collection controller and a programmable process controller, wherein, the data collection controller is connected with the programmable process controller in a manner of bidirectional signal flow. A lower tank is internally and fixedly provided with a water level upper limit switch, a double-flange pressure difference transmitter and a water level lower limit switch. The signals on gas exhaust, liquid incoming and liquid discharge outputted by the data collection controller are viewed as the control signals for corresponding electromagnetic valves. The signals outputted by a high water level limit switch, the water level upper limit switch, the double-flange pressure difference transmitter and the water level lower limit switch are inputted into the relative data collecting terminals of the data collection controller. The utility model can accurately measure out the three phase content about water, oil and gas in the extracted liquid of oil fields.
Description
Technical field:
The utility model relates to a kind of metering device of using on the oil field, especially relates to a kind of device that utilizes differential pressure method to finish oil in the oil well produced liquid, gas, water three phase metering.
Background technology:
Oil well produced liquid is the fluid-mixing by oil, gas, water three phase compositions, this fluid-mixing, for different oil fields, different blocks, different oil wells, each mutually shared ratio is different, and each mutually shared ratio regular meeting ceaselessly changes with the variation of down-hole situation, petroleum production parameter, oil transportation parameter.Therefore, the accurate metering for this oil well produced liquid is the difficult problem of petroleum metering work always.The general method of measurement of just using in each oil field mainly contains now: 1, eliminator glass tube metering; 2, three-phase flow meter metering; 3, three kinds of metering methods such as tipping bucket type metering, these metering devices are all more ancient, and are technical more outmoded.At present along with the oil field has entered the high water-cut development later stage, use above-mentioned method of measurement and device to carry out oil-gas-water three-phase metering and mainly have following problem: 1, oilwell produced fluid amount generally fluctuates bigger, there is the production fluid intermittency in stripper well, is difficult to draw real output by manually measuring in short-term.2, oil well output fluctuation is big, causes the associated gas output fluctuation also bigger, and orifice plate is joined survey gas method such as dual bellows differential gauges and can not be suitable for.3, because sand in the oil well liquid-producing and impurity increase, and the moisture content height makes the easy fouling of instrument again, gear meter, rotz flowmeter are inapplicable.4, because production fluid moisture content height, there are a large amount of free waters to exist, therefore, manual sampling randomness is higher, is difficult to obtain true, stable, water cut value accurately.
The utility model content:
Be difficult to realize problem in order to solve the existing metering device in oil field to oil, gas, water three phase content accurate measurements in the oil well produced liquid, the utility model provides a kind of oil well differential pressure method metering device, this kind oil well differential pressure method metering device utilizes the differential pressure method principle can accurately measure the content of oil in the oil well produced liquid, gas, water three-phase, and adopts programmable controller can realize real-time control measurement and remote data transmission to oil well produced liquid.
The technical solution of the utility model is: this kind oil well differential pressure method metering device, at first comprise a cylindrical closed tank that forms by upper tank body that is communicated with and lower tank, and a data acquisition controller and a programmable controller.Adopt bidirectional traffic to connect between described data acquisition controller and the programmable controller, the middle part of described upper tank body inner chamber is equipped with a demister, this demister is separated into upper tank body, following two parts, wherein top has an extract duct interface, the lower part has an input duct interface, the junction of described upper tank body and lower tank is fixed with a high liquid level limit switch, in the lower tank from top to bottom fixed order liquid level upper limit switch is arranged, double flanges differential pressure transmitter and liquid level limit switch, the bottom of described lower tank has the Drainage pipe interface.
Described extract duct interface, the input duct interface, the Drainage pipe interface is respectively by tube connector and exhaust control electromagnetic valve, the feed liquor control electromagnetic valve, the discharge opeing control electromagnetic valve is connected, exhaust by described data acquisition controller output, feed liquor, the discharge opeing control signal is connected to the control signal input as the electrical control signal of above-mentioned respective electrical magnet valve respectively, by described high liquid level limit switch, liquid level upper limit switch, the high limited signal of double flanges differential pressure transmitter and the output of liquid level limit switch, limited signal on the liquid level, differential pressure signal, limited signal is input to the corresponding data collection terminal of described data acquisition controller respectively under the liquid level.
The utlity model has following beneficial effect: owing to take such scheme to carry out the metering of oil, gas, water three-phase stream, be to detect the differential static pressure that fluid column produced of determining height by double flanges differential pressure transmitter, this signal is delivered to programmable controller through data acquisition unit and is handled, just can calculate moisture content, oil production, aquifer yield according to differential pressure method according to measured fluid column differential static pressure according to the daily fluid production rate that how much calculates mixed liquor, the while that the surveys unit interval enters amount of liquid in the metering device this moment, realizes the accurate measurement that oil, gas, water three-phase are flowed thus.In addition, whole metering process is undertaken by programmable controller continual scan round under the control of input program in advance, therefore can realize real-time control measurement, overcome the oilwell produced fluid amount fluctuation and problem that being difficult to of bringing measures in real time oil well produced liquid.Use this device, the control of whole metering process and result calculate and can realize that remote data transmits, and has improved post employee's operating efficiency by data acquisition controller and programmable controller synergy.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
1-extract duct interface among the figure, 2-input duct interface, 3-demister, the 4-lower tank, the high liquid level limit switch of 5-, 6-liquid level upper limit switch, the 7-double flanges differential pressure transmitter, 8-liquid level limit switch, 9-sewage draining exit, 10-Drainage pipe interface, 11-produces header, 12-upper tank body, S1-feed liquor control signal, the S2-pressure signal, the high limited signal of S3-, limited signal on the S4-liquid level, S5-differential pressure signal, limited signal under the S6-liquid level, S7-exhaust control signal, S8-discharge opeing control signal, F1-feed liquor control electromagnetic valve, F2-exhaust control electromagnetic valve, F3-discharge opeing control electromagnetic valve.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this kind oil well differential pressure method metering device, comprise a cylindrical closed tank that forms by upper tank body 12 that is communicated with and lower tank 4, and a data acquisition controller and a programmable controller, adopt bidirectional traffic to connect between described data acquisition controller and the programmable controller.For data acquisition controller, can adopt HYHLONWORKS type intelligent controller, for programmable controller, the S7 series programmable controller that can adopt Siemens to produce.
The concrete structure of tank body is as follows: at the middle part of described upper tank body 12 inner chambers a demister 3 is installed, this demister is separated into upper and lower two parts with upper tank body 12, wherein top has an extract duct interface 1, the lower part has an input duct interface 2, the junction of described upper tank body 12 and lower tank 4 is fixed with a high liquid level limit switch 5, in the lower tank 4 from top to bottom fixed order liquid level upper limit switch 6, double flanges differential pressure transmitter 7 and liquid level limit switch 8 are arranged, the bottom of described lower tank 4 has Drainage pipe interface 10.Described extract duct interface 1, input duct interface 2, Drainage pipe interface 10 is respectively by tube connector and exhaust control electromagnetic valve F2, feed liquor control electromagnetic valve F1, discharge opeing control electromagnetic valve F3 is connected, exhaust signal S7 by described data acquisition controller output, feed liquor signal S1, discharge opeing control signal S8 is connected to the control signal input as the electrical control signal of above-mentioned respective electrical magnet valve respectively, by described high liquid level limit switch 5, liquid level upper limit switch 6, the high limited signal S3 of double flanges differential pressure transmitter 7 and 8 outputs of liquid level limit switch, limited signal S4 on the liquid level, differential pressure signal S5, limited signal S6 is input to the corresponding data collection terminal of described data acquisition controller respectively under the liquid level.
Here we are actual when finishing, and can consider described feed liquor control electromagnetic valve F1 is adopted three way cock, and high liquid level limit switch 5 adopt float switches, and liquid level upper limit switch 6 and liquid level limit switch 8 all adopt the infrared sensor that can send the sprocket pulse signal.
When using this device, at first pour this well into measurement flow, start accounting procedure, this moment, feed liquor control electromagnetic valve F1 opened to this metering device, and according to its function, we also can be referred to as eliminator, at this moment, discharge opeing control electromagnetic valve F3 closes, and exhaust control electromagnetic valve F2 opens.Liquid begins to enter eliminator, under the effect of demister, begins to separate according to Wei Bo effect principle gas-liquid.Because the liquid sedimentation, gas rises, and liquid level is begun to rise by the eliminator bottom.When liquid level rose to the location point at liquid level limit switch 8 places, infrared sensor sent and starts the sprocket pulse signal, picks up counting.When liquid level rose to the location point at liquid level upper limit switch 6 places, infrared sensor sent and stops sprocket pulse, and timing finishes, and feed liquor control electromagnetic valve F1 opens to producing header simultaneously, stops feed liquor.5-7 is after second, treat that level stability gets off, double flanges differential pressure transmitter 7 is sent higher precision differential pressure data after detecting the fluid column differential static pressure of determining height, these data are delivered to programmable controller through data acquisition unit and are handled, and just can calculate moisture content, oil production, aquifer yield according to measured fluid column differential static pressure according to daily fluid production rate, the while that the level meter that the survey unit interval enters eliminator is calculated mixed liquor this moment.
Concrete calculating principle is as follows:
For measuring 0～3m, actual measurement range 1.5～2.0m, differential pressure transmitter should be selected 0～30kPa range for use.
V(m
3)＝1/4πD
2H＝πR
2H (1)
Δ t (second)=t
2-t
1(2)
F
Liquid(m
3)=86400/ Δ t * V (3)
P
1＝h
1×d P
2＝h
2×d
ΔP＝P
2-P
1＝d(h
2-h
1)＝d×h(4)
d＝(d
1×V
1+d
2×V
2)/(V
1+V
2)(5)
a＝d
1×V
1/(d
1×V
1+d
2×V
2)?(6)
By (5): (d
1* V
1+ d
2* V
2)=d * (V
1+ V
2)
d
1×V
1+d
2×V
2＝d×V
1+d×V
2
V
1(d
1-d)＝V
2(d-d
2)
V
1/V
2＝(d-d
2)/(d
1-d) V
2/V
1＝(d
1-d)/(d-d
2)
By (6): a=d
1* V
1/ d * (V
1+ V
2)
＝d
1/d×(1+V
2/V
1)
＝d
1/d×[1+(d
1-d)/(d-d
2)]
＝d
1/[d×(d-d
2+d
1-d)/(d-d
2)]
＝d
1/[d×(d
1-d
2)/(d-d
2)]
＝d
1×(d-d
2)/d×(d
1-d
2)
＝(d
1×d-d
1×d
2)/(d×d
1-d×d
2)
a＝d
1×(d-d
2)/d×(d
1-d
2) (7)
By (4): d=Δ P/h
Substitution (7): a=d
1* (Δ P/h-d
2)/[Δ P/h * (d
1-d
2)]
＝d
1×(1-h×d
2/ΔP)/(d
1-d
2)
If: k=d
1/ (d
1-d
2)
Then: ρ=k * (1-h * d
2/ Δ P) (8)
F
Oil=ρ * F
Liquid(9)
F
Water=F
Liquid-F
Oil=F
Liquid(1-a) (10)
In the formula: V-mixing material metered volume (m
3)
H-metered body height (m)
Δ t-measures the cumulative time (second)
t
1When-liquid level limit switch is closed (metering zero-time)
t
2During-liquid level upper limit switch closure (metering concluding time)
F
Liquid-Ri production fluid amount of calculation (m
3)
D-mixing material proportion (kg/m
3)
d
1-water proportion (kg/m
3)
d
2-specific gravity of crude (kg/m
3)
V
1-water volume (m
3)
V
2-former oil volume (m
3)
h
1-differential pressure transmitter low side installation site (m)
h
2The high-end installation site of-differential pressure transmitter (m)
The tested mixing material height of h-(m)
Δ P-differential pressure value (kPa)
ρ-moisture content (%)
F
Oil-Ri produce oil amount of calculation (m
3)
F
Water-daily output water amount of calculation (m
3)
Liquid meter is closed exhaust control electromagnetic valve F2 after finishing, and opens discharge opeing control electromagnetic valve F3 discharge opeing, and can carry out the metering of gas production this moment.
Claims (4)
1. an oil well differential pressure method metering device comprises a cylindrical closed tank that is formed by upper tank body (12) that is communicated with and lower tank (4), it is characterized in that:
Described metering device also comprises a data acquisition controller and a programmable controller, adopts bi-directional signal flow to connect between described data acquisition controller and the programmable controller;
The middle part of described upper tank body (12) inner chamber is equipped with a demister (3), this demister is separated into upper tank body (12), following two parts, wherein top has an extract duct interface (1), the lower part has an input duct interface (2), the junction of described upper tank body (12) and lower tank (4) is fixed with a high liquid level limit switch (5), in the lower tank (4) from top to bottom fixed order liquid level upper limit switch (6) is arranged, double flanges differential pressure transmitter (7) and liquid level limit switch (8), the bottom of described lower tank (4) has Drainage pipe interface (10);
Described extract duct interface (1), input duct interface (2), Drainage pipe interface (10) is respectively by tube connector and exhaust control electromagnetic valve (F2), feed liquor control electromagnetic valve (F1), discharge opeing control electromagnetic valve (F3) is connected, exhaust by described data acquisition controller output, feed liquor, discharge opeing control signal (S7, S1, S8) be connected to the control signal input as the electrical control signal of above-mentioned respective electrical magnet valve respectively, by described high liquid level limit switch (5), liquid level upper limit switch (6), the high limited signal of double flanges differential pressure transmitter (7) and liquid level limit switch (8) output, limited signal on the liquid level, differential pressure signal, limited signal (S3 under the liquid level, S4, S5 S6) is input to the corresponding data collection terminal of described data acquisition controller respectively.
2. oil well differential pressure method metering device according to claim 1 is characterized in that: described feed liquor control electromagnetic valve (F1) is a three way cock.
3. oil well differential pressure method metering device according to claim 2 is characterized in that: described high liquid level limit switch (5) is a float switch.
4. oil well differential pressure method metering device according to claim 3 is characterized in that: described liquid level upper limit switch (6) and liquid level limit switch (8) all adopt the infrared sensor that can send the sprocket pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201429768U CN201025024Y (en) | 2007-04-20 | 2007-04-20 | Oil well pressure differentiation measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201429768U CN201025024Y (en) | 2007-04-20 | 2007-04-20 | Oil well pressure differentiation measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025024Y true CN201025024Y (en) | 2008-02-20 |
Family
ID=39098882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201429768U Expired - Fee Related CN201025024Y (en) | 2007-04-20 | 2007-04-20 | Oil well pressure differentiation measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025024Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015969A (en) * | 2012-11-30 | 2013-04-03 | 南通市飞宇石油科技开发有限公司 | Multiphase flow metering system |
| CN105223115A (en) * | 2015-09-29 | 2016-01-06 | 苏州工业园区清源华衍水务有限公司 | A kind of sludge settling ratio observation device and apply the observation procedure of this device |
| CN111636860A (en) * | 2020-06-07 | 2020-09-08 | 山东方锐智能科技有限公司 | Oil well automatic meter using weighing method |
| CN112049621A (en) * | 2020-08-28 | 2020-12-08 | 山东方锐智能科技有限公司 | Automatic calibration box for oil well liquid production amount |
| CN112049622A (en) * | 2020-09-01 | 2020-12-08 | 山东方锐智能科技有限公司 | Three-phase automatic metering and checking integrated device for oil well testing |
| CN112814649A (en) * | 2021-01-04 | 2021-05-18 | 天津科技大学 | Intelligent metering device and method for water content of oil well produced liquid |
| CN118583236A (en) * | 2024-08-02 | 2024-09-03 | 胜利油田胜机石油装备有限公司 | Double differential pressure type two-phase flow metering device |
-
2007
- 2007-04-20 CN CNU2007201429768U patent/CN201025024Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015969A (en) * | 2012-11-30 | 2013-04-03 | 南通市飞宇石油科技开发有限公司 | Multiphase flow metering system |
| CN105223115A (en) * | 2015-09-29 | 2016-01-06 | 苏州工业园区清源华衍水务有限公司 | A kind of sludge settling ratio observation device and apply the observation procedure of this device |
| CN111636860A (en) * | 2020-06-07 | 2020-09-08 | 山东方锐智能科技有限公司 | Oil well automatic meter using weighing method |
| CN112049621A (en) * | 2020-08-28 | 2020-12-08 | 山东方锐智能科技有限公司 | Automatic calibration box for oil well liquid production amount |
| CN112049622A (en) * | 2020-09-01 | 2020-12-08 | 山东方锐智能科技有限公司 | Three-phase automatic metering and checking integrated device for oil well testing |
| CN112814649A (en) * | 2021-01-04 | 2021-05-18 | 天津科技大学 | Intelligent metering device and method for water content of oil well produced liquid |
| CN118583236A (en) * | 2024-08-02 | 2024-09-03 | 胜利油田胜机石油装备有限公司 | Double differential pressure type two-phase flow metering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20120420 |