CN110242279A - Single-well crude oil three-phase flow metering device and its method - Google Patents
Single-well crude oil three-phase flow metering device and its method Download PDFInfo
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- CN110242279A CN110242279A CN201910606392.9A CN201910606392A CN110242279A CN 110242279 A CN110242279 A CN 110242279A CN 201910606392 A CN201910606392 A CN 201910606392A CN 110242279 A CN110242279 A CN 110242279A
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- 239000010779 crude oil Substances 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000009825 accumulation Methods 0.000 claims abstract description 29
- 239000003921 oil Substances 0.000 claims abstract description 27
- 238000004458 analytical method Methods 0.000 claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 4
- 206010069747 Burkholderia mallei infection Diseases 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 20
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 241000372132 Hydrometridae Species 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of single-well crude oil three-phase flow metering device and its methods, the single-well crude oil three-phase flow metering device includes flow accumulation and display instrument and the signal piping passed through for crude oil, volume flowmeter is provided on signal piping, pressure difference transmitter and analysis of moisture content instrument, volume flowmeter is used to measure the instantaneous volume flow rate of crude oil vapor water three-phase flow, pressure difference transmitter is for measuring the pressure difference that crude oil vapor water three-phase flow generates in one section of vertical distance, analysis of moisture content instrument is used to measure the volumetric water content in crude oil, flow accumulation and display instrument and volume flowmeter, pressure difference transmitter and analysis of moisture content instrument are all connected with, flow accumulation and display instrument are used for according to volume flowmeter, the testing result of pressure difference transmitter and analysis of moisture content instrument is come the oil that is calculated and be shown in crude oil, the volume flow of gas and water.Single-well crude oil three-phase flow metering device of the invention and its method, it is not necessary that crude oil separation can measure to the flow of oil, gas and water this three-phase in crude oil.
Description
Technical field
The present invention relates to technical field of petroleum extraction, more particularly to a kind of single-well crude oil three-phase flow metering dress
It sets and its method.
Background technique
Changing rule of the crude oil single well metering for grasp individual well difference mining period oil well productivity, three-phase content, adjustment
With the optimization displacement of reservoir oil and oil pumping manufacturing parameter, guarantee that stable yields and Increasing Production and Energy Saving are of great significance.Due to each crude oil at
Divide transitivity difference big, conveys by different proportion Oil, Water, Gas Three-phase Flow, easy two-phase or three Phase Separating-Metering Device are very
Hardly possible separation is clean thorough, causes measurement error big, and the metering device of some complexity is expensive and is not suitable for the use of individual well scene, people again
Work sampling chemical examination is accurate but result can only be directed to and sample crude oil and inefficiency at that time, therefore simple, efficient, accurate one-well metering
Always worldwide advanced subject.
Such as: various gas-liquid two-phases separate single well metering devices, and actual metered systematic error is all close to 10%, various weighings
Tank theoretically can achieve degree of precision to Metering, but can only measure oil mixing with water flow, but to water content, air content
It is helpless.
Summary of the invention
It, can be in individual well output crude oil without being separated to crude oil it is an object of the invention to propose that a kind of structure is simple
Respectively volume flow provides the single-well crude oil three-phase flow metering device and its method of more accurate flow metering to Oil, Water, Gas.
For this purpose, on the one hand, the invention adopts the following technical scheme:
A kind of single-well crude oil three-phase flow metering device, including the signal piping for passing through for crude oil, the detection pipe
Road is provided with
Volume flowmeter is used to measure the instantaneous volume flow rate of crude oil vapor water three-phase flow；
Pressure difference transmitter is used to measure the pressure difference that crude oil vapor water three-phase flow generates in one section of vertical distance；And
Analysis of moisture content instrument is used to measure the volumetric water content in crude oil；
The single-well crude oil three-phase flow metering device further include:
Flow accumulation and display instrument, with the volume flowmeter, the pressure difference transmitter and the analysis of moisture content instrument
It is all connected with, the flow accumulation and display instrument are used for according to the volume flowmeter, the pressure difference transmitter and the water content
The testing result of analyzer is come the respective instantaneous volume flow rate of the oil, gas and the water that are calculated and be shown in crude oil.
In a specific embodiment, the pressure difference transmitter includes that the first pressure set gradually along the vertical direction passes
Sensor and second pressure sensor, the first pressure sensor and the second pressure sensor connect with the pick-up host
It connects, the pick-up host is connect with the flow accumulation with display instrument.
In a specific embodiment, it is additionally provided on the signal piping:
Pressure transmitter is used to measure the pressure of crude oil vapor water three-phase flow；And
Temperature transmitter is used to measure the temperature of crude oil vapor water three-phase flow.
In a specific embodiment, shut-off valve is provided at the fluid inlet of the signal piping.
In a specific embodiment, connected between the fluid inlet and fluid outlet of the signal piping by by-passing valve
It is logical.
In a specific embodiment, safety is provided between the fluid inlet and fluid outlet of the signal piping
Valve.
In a specific embodiment, the tracheae being additionally provided on the signal piping for being connected to source purge gas is fast
Quick coupling and the safety relief pipeline being connected to the signal piping and the tapping valve being set on the safety relief pipeline.
In a specific embodiment, the volume flow is calculated as rotz flowmeter.
In a specific embodiment, the single-well crude oil three-phase flow metering device further includes skid, the detection
Pipeline, the volume flowmeter, the pressure difference transmitter, the analysis of moisture content instrument and the flow accumulation and display instrument are all provided with
It is placed in the skid.
On the other hand, the invention adopts the following technical scheme:
Beneficial effects of the present invention are as follows:
A kind of single well triphase flowmeter amount side based on single-well crude oil three-phase flow metering device described in any of the above embodiments
Method includes the following steps:
Acquire the testing result of volume flowmeter, pressure difference transmitter and analysis of moisture content instrument；
The density p of crude oil vapor water three-phase flow is calculated by formula (1)Z:
In formula, g is gravity acceleration value, and Δ P is the pressure difference that crude oil vapor water three-phase flow generates on vertical distance h；
The instantaneous volume flow rate that oil, water are gentle in crude oil is calculated separately by formula (2) to formula (4):
Vs=ω VzFormula (2),
Vq=Vz-Vy-VsFormula (4),
In formula, Vz is the instantaneous volume flow rate of crude oil vapor water three-phase flow, and Vs is the instantaneous volume flow rate of former W/O, Vy
For instantaneous volume flow rate oily in crude oil, Vq is the instantaneous volume flow rate of former oil dissolved gas, and ω is the measurement of analysis of moisture content instrument
Moisture content in crude oil, ρ s are the density of former W/O, and ρ y is the density of net crude oil.
Beneficial effects of the present invention are as follows:
Single-well crude oil three-phase flow metering device provided by the invention and its method, without by crude oil separation can in real time and
Relatively accurately measure the instantaneous volume flow rate of oil, gas and water this three-phase in crude oil, structure is simple, and detection is simple, manufacture and use at
This is lower, is suitable for a wide range of promote the use of.
Detailed description of the invention
Fig. 1 is the top view for the first single-well crude oil three-phase flow metering device that the specific embodiment of the invention provides；
Fig. 2 is the top view for second of single-well crude oil three-phase flow metering device that the specific embodiment of the invention provides；
Fig. 3 is the main view for second of single-well crude oil three-phase flow metering device that the specific embodiment of the invention provides.
Appended drawing reference:
1, skid；2, signal piping；3, volume flowmeter；4, pressure difference transmitter；5, analysis of moisture content instrument；6, flow accumulation
With display instrument；7, pressure transmitter；8, temperature transmitter；9, shut-off valve；10, by-passing valve；11, safety valve；12, the fast quick access of tracheae
Head；13, tapping valve；21, fluid inlet；22, fluid outlet；41, first pressure sensor；42, second pressure sensor.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.Term " the
One ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as indicating or implying relative importance.
A specific embodiment of the invention discloses a kind of single-well crude oil three-phase flow metering device, including skid 1, inspection
Test tube road 2 and flow accumulation and display instrument 6, signal piping 2 and flow accumulation and display instrument 6 are all set in skid 1, with convinent car
Carrying is defeated.Skid 1 can with but be not limited to place generally in a horizontal direction.The fluid inlet 21 and fluid outlet of signal piping 2
At 22 respectively preferably but be not limited to be provided with ring flange, be connected in order to will test pipeline 2 with petroleum pipeline.On signal piping 2
It is provided with volume flowmeter 3, pressure difference transmitter 4, analysis of moisture content instrument 5, pressure transmitter 7 and temperature transmitter 8.Wherein, body
Product flowmeter 3 is used to measure total instantaneous volume flow rate Vz of the crude oil vapor water three-phase flow in signal piping 2.Pressure difference pick-up
Device 4 is for measuring the pressure difference that the crude oil vapor water three-phase flow in signal piping 2 generates in one section of vertical distance, analysis of moisture content
Instrument 5 is used to measure the volumetric water content in the crude oil in signal piping 2, and pressure transmitter 7 is for measuring in signal piping 2
The pressure of crude oil vapor water three-phase flow, temperature transmitter 8 are used to measure the temperature of the crude oil vapor water three-phase flow in signal piping 2
Degree.Flow accumulation and display instrument 6 and volume flowmeter 3, pressure difference transmitter 4, analysis of moisture content instrument 5, pressure transmitter 7 and temperature
Transmitter 8 is electrically connected, for volume flowmeter 3, pressure difference transmitter 4, analysis of moisture content instrument 5, pressure transmitter 7 and temperature
Transmitter 8 provides power supply and acquires corresponding testing result, and flow accumulation and display instrument 6 are used for according to volume flowmeter 3, pressure
The testing result of poor transmitter 4 and analysis of moisture content instrument 5 calculates the respective instantaneous volume flow of the oil in crude oil, gas and water
Measure and show respective instantaneous volume flow rate and oil, the gas and the respective integrated flow of water of the oil in crude oil, gas and water.Flow
Integrating and display instrument 6 can be also used for display volume flowmeter 3, pressure difference transmitter 4, analysis of moisture content instrument 5, pressure transmitter 7
With the testing result of temperature transmitter 8.Wherein, the instantaneous volume of flow accumulation and oil, gas and water in the display crude oil of display instrument 6
Flow can be the volume ratio for showing specific flow value or showing oil, gas and water.
Wherein, flow accumulation preferably but is not limited to be set in explosion-proof tank with display instrument 6.Optionally, flow accumulation with
The host of display instrument 6 can be PLC or single-chip microcontroller.Flow accumulation and display instrument 6 have power input interface and can give each measuring instrument
Device power supply, and there is signal input interface, keypad and display etc..The wherein quantity and interface form of signal input interface
It should be corresponding with the quantity of detection devices output interface such as sensor that flow accumulation and display instrument 6 need to connect.Wherein, key
Plate can at least input the density p of the cleaned crude oil obtained in crude oil to be measured to flow accumulation and display instrument 6y, in crude oil to be measured
The density p of mineralized waters.Display preferably but is not limited to liquid crystal display, display can show oil in current crude oil,
Water, gas three-phase flow instantaneous percent by volume and metering process in the respective integrated flow of three-phase flow.
Volume flowmeter 3 can be, but not limited to be also possible to other volumetric flowmeters for rotz flowmeter.Pressure difference pick-up
Device 4 includes pick-up host 43 and the first pressure sensor 41 and second pressure sensor 42 that set gradually along the vertical direction, i.e.,
First pressure sensor 41 and second pressure sensor 42 are arranged on one section of vertical uniform tube, first pressure sensor 41
It is connect with pick-up host 43 with second pressure sensor 42, pick-up host 43 and flow accumulation and display instrument 6 are electrically connected, and are become
Send host 43 that can measure crude oil according to the difference of second pressure sensor 42 and the testing result of first pressure sensor 41
Pressure difference Δ P is simultaneously passed to flow accumulation and display by pressure difference Δ P that oil-gas-water three-phase flow generates in one section of vertical distance
Instrument 6.
The specific setting position of pressure transmitter 7 and temperature transmitter 8 is unlimited, the crude oil being able to detect in signal piping 2
The pressure and temperature of oil-gas-water three-phase flow.But pressure transmitter 7 and temperature transmitter 8 preferably but are not limited to close to volume
The near exit of flowmeter 3 is arranged.In present embodiment, pressure transmitter 7 is located at the upstream of pressure difference transmitter 4, temperature
Transmitter 8 is located at the downstream of pressure difference transmitter 4.
The installation interface of analysis of moisture content instrument 5 is preferred but is not limited to be arranged on the top of vertical pipeline, in order to contain
The sensor of water analyzer 5 can be full of crude oil.
It, can be between the fluid inlet 21 of signal piping 2 and the entrance of volume flowmeter 3 for the ease of operation and maintenance
Shut-off valve 9 is set, in order to close measurement pipeline.It is of course also possible to according to specific needs at the other positions of signal piping 2
Increase setting shut-off valve 9, be convenient for thorough isolation measurement pipeline, only maintains bypass line mentioned below and safety relief pipeline logical
Freely.
As shown in Figures 2 and 3, it can enable between the fluid inlet 21 of signal piping 2 and fluid outlet 22 and pass through bypass pipe
Road connection, is provided with by-passing valve 10 on bypass line, so as to when single-well crude oil three-phase flow metering device needs to safeguard, not in
Disconnected well head oil transportation.
It is connected between the fluid inlet 21 and fluid outlet 22 of signal piping 2 by safety valve 11, to prevent valve body or body
Cause pipe to press through height when product 3 failure of flowmeter, generates security risk.
For the ease of being completed or when to maintain equipment clears up signal piping 2, use is additionally provided on signal piping 2
In the tracheae quick coupling 12 being connected to source purge gas and the safety relief pipeline being connected to signal piping 2 and it is set to safety
The tapping valve 13 of bleeder pipe road, is completed or tracheae rapid structural 12 accesses gas source when to maintain equipment, opens tapping valve 13
With the residual liquid cleared up in signal piping 2 and volume flow etc..Source purge gas can with but be not limited to compressed nitrogen gas source.Wherein
The quantity of tracheae quick coupling 12 and setting position are unlimited, are arranged according to specific needs.Such as it can be in volume flowmeter 3
Upstream and downstream is respectively provided with tracheae quick coupling 12.Wherein, safety relief pipeline is preferably the lowest order for being set to signal piping 2
Place is set, in order to the discharge of liquid in signal piping 2.
The single-well crude oil three-phase flow metering device that present embodiment provides, crude oil are entered by the fluid of signal piping 2
Mouth 21 is followed by horizontally disposed shut-off valve 9, volume flowmeter 3, pressure transmitter 7, then vertically flows through pressure difference transmitter 4
Level flows through temperature transmitter 8 after two pressure sensors, the sensor of analysis of moisture content instrument 5 is then again passed through, finally by detecting
The fluid outlet 22 of pipeline 2 returns to oil pipeline.
Present embodiment additionally provides a kind of individual well three-phase based on above-mentioned single-well crude oil three-phase flow metering device
Flow metering method includes the following steps:
Flow accumulation and display instrument 6 acquire the detection knot of volume flowmeter 3, pressure difference transmitter 4 and analysis of moisture content instrument 5
Fruit；
Flow accumulation and display instrument 6 calculate the density p of crude oil vapor water three-phase flow by formula (1)Z:
In formula:
ρZFor the density of crude oil vapor water three-phase flow, ρZUnit is kg/m3；
G is gravity acceleration value, and g unit is m/s2, g pre-enters into flow accumulation and display instrument 6；
H is the distance between the center of first pressure sensor 41 and the center of second pressure sensor 42, h unit m；
Δ P is the pressure difference that the three-phase flow that pressure difference transmitter 4 detects generates on vertical distance h, and Δ P unit is Pa.
Flow accumulation and display instrument 6 calculate separately the instantaneous volume flow that oil, water are gentle in crude oil by formula (2) to formula (4)
Amount:
Vs=ω VzFormula (2),
Vq=Vz-Vy-VsFormula (4),
In formula: Vz is the total flow for the crude oil vapor water three-phase flow that volume flowmeter 3 measures, Vz unit m3/h；
Vs is the instantaneous volume flow rate of former W/O, Vs unit m3/h；
Vy is instantaneous volume flow rate oily in crude oil, Vy unit m3/h；
Vq is the instantaneous volume flow rate of former oil dissolved gas, Vq unit m3/h；
ω is the volumetric water content in the crude oil that analysis of moisture content instrument 5 measures；
ρ s is the density of the water in crude oil to be measured, ρ s units/kg/m3；
ρ y is the density of the cleaned crude oil obtained in crude oil to be measured, ρ y units/kg/m3；
ρ s and ρ y are obtained and are input in flow accumulation and display instrument 6 through chemical examination, and the unit of ρ s and ρ y are kg/m3。
Furthermore it is possible to according to pressure value P and temperature in pressure transmitter 7 and the signal piping 2 of the detection of temperature transmitter 8
Value T, and resulting Vq will be calculated according to formula PV=nRT in formula (4) be converted into the volume of gas in normal conditions.It needs
It is that in the embodiment for not needing Vq being converted into the volume of gas in normal conditions, pressure can also be not provided with brightly
Transmitter 7 and temperature transmitter 8.
In addition, using for the ease of cold winter, insulating layer can be coated on the outside of signal piping.
The single-well crude oil three-phase flow metering device and its method that present embodiment provides, without being by crude oil separation
The flow of oil, gas and water this three-phase can be measured in crude oil in real time and relatively accurately, structure is simple, and detection is simple, manufacture and use at
This is lower, is suitable for a wide range of promote the use of.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of single-well crude oil three-phase flow metering device, which is characterized in that including the signal piping for passing through for crude oil
(2), it is provided on the signal piping (2)
Volume flowmeter (3), is used to measure the instantaneous volume flow rate of crude oil vapor water three-phase flow；
Pressure difference transmitter (4) is used to measure the pressure difference that crude oil vapor water three-phase flow generates in one section of vertical distance；And
Analysis of moisture content instrument (5), is used to measure the volumetric water content in crude oil；
The single-well crude oil three-phase flow metering device further include:
Flow accumulation and display instrument (6), with the volume flowmeter (3), the pressure difference transmitter (4) and the water content point
Analyzer (5) is all connected with, and the flow accumulation and display instrument (6) are used for according to the volume flowmeter (3), the pressure difference transmitter
(4) and the testing result of the analysis of moisture content instrument (5) is come the respective instantaneous body of the oil, gas and the water that are calculated and be shown in crude oil
Product flow.
2. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
The pressure difference transmitter (4) includes pick-up host (43) and the first pressure sensor (41) set gradually along the vertical direction
With second pressure sensor (42), the first pressure sensor (41) and the second pressure sensor (42) with the change
Host (43) are sent to connect, the pick-up host (43) connect with the flow accumulation with display instrument (6).
3. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
It is additionally provided on the signal piping (2):
Pressure transmitter (7), is used to measure the pressure of crude oil vapor water three-phase flow；And
Temperature transmitter (8), is used to measure the temperature of crude oil vapor water three-phase flow.
4. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
Shut-off valve (9) are provided at the fluid inlet (21) of the signal piping (2).
5. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
It is connected between the fluid inlet (21) and fluid outlet (22) of the signal piping (2) by by-passing valve (10).
6. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
Safety valve (11) are provided between the fluid inlet (21) and fluid outlet (22) of the signal piping (2).
7. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
Be additionally provided on the signal piping (2) tracheae quick coupling (12) for being connected to source purge gas and with the inspection
The safety relief pipeline of test tube road (2) connection and the tapping valve (13) being set on the safety relief pipeline.
8. single-well crude oil three-phase flow metering device according to claim 1, which is characterized in that
The volume flowmeter (3) is rotz flowmeter.
9. single-well crude oil three-phase flow metering device according to any one of claim 1 to 8, which is characterized in that
The single-well crude oil three-phase flow metering device further includes skid (1), the signal piping (2), the volume flowmeter
(3), the pressure difference transmitter (4), the analysis of moisture content instrument (5) and the flow accumulation and display instrument (6) are all set in institute
It states on skid (1).
10. a kind of individual well three-phase flow based on single-well crude oil three-phase flow metering device as described in any one of claim 1 to 9
Measure metering method, which comprises the steps of:
Acquire the testing result of volume flowmeter (3), pressure difference transmitter (4) and analysis of moisture content instrument (5)；
The density p of crude oil vapor water three-phase flow is calculated by formula (1)Z:
In formula, g is gravity acceleration value, and Δ P is the pressure difference that crude oil vapor water three-phase flow generates on vertical distance h；
The instantaneous volume flow rate that oil, water are gentle in crude oil is calculated separately by formula (2) to formula (4):
Vs=ω VzFormula (2),
Vq=Vz-Vy-VsFormula (4),
In formula, Vz is the instantaneous volume flow rate of crude oil vapor water three-phase flow, and Vs is the instantaneous volume flow rate of former W/O, and Vy is original
Oily instantaneous volume flow rate in oil, Vq are the instantaneous volume flow rate of former oil dissolved gas, and ω is the original of analysis of moisture content instrument (5) measurement
Moisture content in oil, ρ s are the density of former W/O, and ρ y is the density of net crude oil.
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| CN201910606392.9A CN110242279B (en) | 2019-07-05 | 2019-07-05 | Single well crude oil three-phase flow metering device and method thereof |
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| CN201910606392.9A CN110242279B (en) | 2019-07-05 | 2019-07-05 | Single well crude oil three-phase flow metering device and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537563A (en) * | 2020-04-22 | 2020-08-14 | 上海晟煜科技有限公司 | Device and method for measuring water content of oil well on line |
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