CN107289988A - The method and apparatus that Oil/gas Well two phase flow is measured using optical fiber probe - Google Patents
The method and apparatus that Oil/gas Well two phase flow is measured using optical fiber probe Download PDFInfo
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- CN107289988A CN107289988A CN201610190719.5A CN201610190719A CN107289988A CN 107289988 A CN107289988 A CN 107289988A CN 201610190719 A CN201610190719 A CN 201610190719A CN 107289988 A CN107289988 A CN 107289988A
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- optical fiber
- fiber probe
- flow
- phase
- photoelectric conversion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/412—Index profiling of optical fibres
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- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
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- Measuring Volume Flow (AREA)
Abstract
The invention discloses the method and apparatus that a kind of utilization optical fiber probe measures Oil/gas Well two phase flow.This method and device can be with each phase content, speed and the flows of identification of hydrocarbon gas well gas liquid two-phase, and bulk flow velocity, flow.The device includes：Measure pipeline (1), optical fiber probe (2), photoelectric conversion unit (3), data Collection ＆ Processing System (4), control computer (5), differential pressure flowmeter (6).
Description
Technical field
The present invention relates to field of fluid measurement, the method and apparatus that specifically a kind of utilization optical fiber probe measures Oil/gas Well two phase flow.
The device can recognize each phase content, speed and the flow of biphase gas and liquid flow, and bulk flow velocity, flow.
Background technology
The flow phenomenon of two phase flow is widely present in engineering, wherein the most universal with biphase gas and liquid flow.Such as petroleum transportation pipeline
Around interior, hydroturbine rotor, the intracloud convection current of air etc., belong to biphase gas and liquid flow flowing.Flowed by two phase flow
Parameter is measured, and understands its characteristic and changing rule, is of great significance for related scientific research, design and production tool.
Compared with single-phase flow, two phase flow due to boundary it is each it is alternate there is mass transfer, or even chemical reaction, and in the time, spatially
It is random variable so that the detection of the flow parameter such as each phase content, flow velocity, flow and overall rate, flow is more complicated
Property, difficulty is very big.So far, existing detection technique and method are built upon the detection hand on single-phase sensor integration mostly
Section, the information content of acquisition is small, and can not carry out real-time monitored description to the overall permanence of two phase flow.
With the metering in industrial production for two phase flow, the requirements at the higher level of control aspect, it is necessary to develop one kind can be simultaneously
Measurement obtain biphase gas and liquid flow in each phase content, flow velocity and flow, and bulk flow velocity, flow device.Optical fiber probe
Method turns into the new method of gas-liquid two-phase flow measurement, with, respond fast the characteristics of high with sensitivity.It is specific to be surveyed in biphase gas and liquid flow
Application principle in amount is to detect pulsatile flow field gas-liquid two-phase in a certain office using the different light refractive index of gas-liquid two-phase medium
The relative time that the certain point gas-liquid in portion space is present.Its ratio is exactly the local split-phase content of this point.Continuous measurement is also
Each phase velocity of split-phase and flow of foregoing biphase gas and liquid flow can be obtained, if being equipped with multiple other kinds of sensors, group is realized
Measurement is closed, then can obtain the flow parameter of complete biphase gas and liquid flow.
The present invention provides the method and apparatus that a kind of utilization optical fiber probe measures Oil/gas Well two phase flow.This method and device can be recognized
Each phase content, speed and the flow of biphase gas and liquid flow, and bulk flow velocity, flow.
The content of the invention
The present invention provides the method and apparatus that a kind of utilization optical fiber probe measures Oil/gas Well two phase flow.This method and device can be recognized
Each phase content, speed and the flow of biphase gas and liquid flow, and bulk flow velocity, flow.Fig. 1 is surveyed using optical fiber probe
Measure the layout of the device of biphase gas and liquid flow.Shown in figure, the device includes：Measure pipeline (1), optical fiber probe (2),
Photoelectric conversion unit (3), data Collection ＆ Processing System (4), control computer (5), differential pressure flowmeter (6).It is connected
Relation is：
In the periphery insertion flow field for the measurement pipeline (1) that optical fiber probe (2) flows from tested biphase gas and liquid flow；
Photoelectric conversion unit (3) connection optical fiber probe (1)；
Photoelectric conversion unit (3) connection data Collection ＆ Processing System (4)；
Differential pressure flowmeter (1) is located on measurement pipeline (1), the downstream in optical fiber probe (2)；
Control computer connection optical fiber probe (2), photoelectric conversion unit (3), data Collection ＆ Processing System (4).
Fig. 2 is the schematic diagram of each phase content of optical fiber probe measurement biphase gas and liquid flow.Represented in figure, along measurement pipeline (1)
Wall insertion optical fiber probe (2).During measurement, when biphase gas and liquid flow flows through optical fiber probe (2), if surrounding medium is
During gas, there is bubble (7), its refractive index is less than the refractive index of optical fiber probe, and incident light (9) is largely reflected back toward
Go (10), photoelectric conversion unit exports a high level (11).If surrounding medium is liquid (8), its refractive index
More than the refractive index of optical fiber probe, incident light is largely refracted in liquid (12) disappearance, and the photoelectricity being connected with optical fiber probe turns
Change unit and export a low level (13).So, as optical fiber probe is alternately contacted with gas-liquid, photoelectric conversion unit is defeated
Go out the voltage signal with time change.This continuous dynamic analog voltage signal enters computer after data collecting system, into
For discrete dynamic digital voltage signal, the local split-phase content at probe position can be obtained by being computed processing.
Brief description of the drawings
Fig. 1 is the layout for the device that biphase gas and liquid flow is measured using optical fiber probe；In figure, 1 measurement pipeline, 2 optical fiber are visited
Pin, 3 photoelectric conversion units, 4 data Collection ＆ Processing Systems, 5 control computers, 6 differential pressure flowmeters.
Fig. 2 is the schematic diagram for each phase content that biphase gas and liquid flow is measured using optical fiber probe；In figure, 7 bubbles, 8 liquid,
9 incident lights, 10 reflected lights, 11 high level, 12 are refracted to light in liquid, 12 low levels.
Embodiment
The method that utilization optical fiber probe proposed by the present invention measures Oil/gas Well two phase flow is further illustrated with a specific embodiment
With the structure and principle of device.The device is used for each phase content, speed and the flow for measuring Air-C_2H_2 Flame, and overall
Average speed, flow.Part composition and annexation in the device is identical with Fig. 1.In embodiment, measurement pipe
It is that 1m, internal diameter are that 50mm, wall thickness 10mm, material are lucite that the section in road (1), which is circular, be length.Water
Placing flat.Circumferentially by mounting hole, aperture 3mm；Optical fiber probe (2) a diameter of 3mm, probe tip is long
For 10mm, circular cone needle-like sapphire, optical fiber is followed by.The part that insert test section in probe leading portion is sealed with steel sleeve
Firmly, the standard electric cable end for being in the other end of optical fiber, to insert photoelectric conversion unit (3)；Data Collection ＆ Processing System
(4) voltage of empty photoelectric conversion unit (3) is measured；Control computer (5) connection, optical fiber probe (2), opto-electronic conversion
Unit (3), data Collection ＆ Processing System (4), operation, while provide data Collection ＆ Processing System (4) it is continuous
Sampling interval, so as to obtain the split-phase speed of Air-Water；Differential pressure flowmeter (7) is surveyed in the downstream of measurement pipeline (1)
Measure total flow.
Claims (1)
1. measuring the method and apparatus of Oil/gas Well two phase flow using optical fiber probe, the device includes：Measure pipeline (1), optical fiber probe
(2), photoelectric conversion unit (3), data Collection ＆ Processing System (4), control computer (5), differential pressure flowmeter
(6), its annexation is：
In the periphery insertion flow field for the measurement pipeline (1) that optical fiber probe (2) flows from tested biphase gas and liquid flow；
Photoelectric conversion unit (3) connection optical fiber probe (1)；
Photoelectric conversion unit (3) connection data Collection ＆ Processing System (4)；
Differential pressure flowmeter (1) is located on measurement pipeline (1), the downstream in optical fiber probe (2)；
Control computer connection optical fiber probe (2), photoelectric conversion unit (3), data Collection ＆ Processing System (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610190719.5A CN107289988A (en) | 2016-03-30 | 2016-03-30 | The method and apparatus that Oil/gas Well two phase flow is measured using optical fiber probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610190719.5A CN107289988A (en) | 2016-03-30 | 2016-03-30 | The method and apparatus that Oil/gas Well two phase flow is measured using optical fiber probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107289988A true CN107289988A (en) | 2017-10-24 |
Family
ID=60087929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610190719.5A Pending CN107289988A (en) | 2016-03-30 | 2016-03-30 | The method and apparatus that Oil/gas Well two phase flow is measured using optical fiber probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107289988A (en) |
-
2016
- 2016-03-30 CN CN201610190719.5A patent/CN107289988A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171024 |
|
| WD01 | Invention patent application deemed withdrawn after publication |