CN205858315U - A kind of gas well mouth gas-liquid two-phase metering device - Google Patents
A kind of gas well mouth gas-liquid two-phase metering device Download PDFInfo
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- CN205858315U CN205858315U CN201620684043.0U CN201620684043U CN205858315U CN 205858315 U CN205858315 U CN 205858315U CN 201620684043 U CN201620684043 U CN 201620684043U CN 205858315 U CN205858315 U CN 205858315U
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Abstract
This utility model provides a kind of gas well mouth gas-liquid two-phase metering device, including surge tank and gas-liquid biphase flowmeter, gas-liquid biphase flowmeter includes upstream metering pipeline section and downstream metering pipeline section, surge tank is arranged on upstream metering pipeline section, deflector it is provided with in tank, surge tank is isolated into upstream and downstream chamber by deflector, and upstream chamber connects bottom surge tank with downstream chamber.When gas well unexpected band liquid, when slug flow occurs, first gas-liquid mixture fluid flows into surge tank upper chamber, because volume increases suddenly, rate of flow of fluid reduces suddenly, liquid is deposited in tank by action of gravity, when air-flow is after pot bottom upstream chamber flows to downstream chamber, fluid passage diminishes suddenly, air-flow velocity increases, downstream chamber liquid is gradually carried out surge tank by the air-flow that downstream chamber flows up, and upstream chamber liquid gradually flows to downstream chamber and supplements, and thus avoids slug flow and occurs, directly through gas-liquid biphase flowmeter, the problem that error in dipping is big.
Description
Technical field
This utility model belongs to the technical field of flow measurement, is specifically related to one and is applied to gas field well head gas-liquid two-phase not
Separate measurement device, is particularly suited for the flow measurement of well head slug flow.
Background technology
Gas well gauging is one of important technical problem of natural gas production field, and gas production, Liquid output etc. produce money
Material be monitoring formation water output, optimize gas field join products, guarantee the basic data of gas reservoir rational exploitation, be by develop geological analysis with
Formulate the important evidence of production decision.At present, the measuring method of main application is separate measurement and well head on-line metering, the most ripe
Natural gas individual well metering method be use separator each to be separated after individually metering, gas phase measuring accuracy is high, but produces and flow
Journey is complicated, and technique construction cost is high, equipment is huge, it is impossible to on-line metering.
In recent years, domestic gas field applies all kinds of gas-liquid two-phase and does not separate metering device, is directly used in gas well mouth gas-liquid
Two-phase flow measurement, such as taper orifice plate gas-liquid biphase flowmeter, double throttle part double difference pressure type gas-liquid biphase flowmeter etc., these effusion meters
When measuring continuous-stable and going out liquid gas well, accuracy is higher, but gas stringer is in recovery process, for taking shaft bottom hydrops out of, it is ensured that
Gas well normally produces, and frequently with foam drainage gas recovery or plunger lift gas production measure, such service shaft gas-liquid goes out between liquid rule is
Having a rest out liquid, when going out liquid, well head gas-liquid mixture fluid fluidised form is mainly slug flow, does not separate gas-liquid two-phase on-line metering band to well head
Come difficult.
Patent No. 201010208042.6, has applied for " conical orifice plate flow meter ", including tapered orifice plate, pressure inverting
Device, differential pressure transmitter, temperature sensor and flow computer, is characterized in that coniform hole front edge of board is provided with pressure transmitter,
It is provided above differential pressure transmitter at tapered orifice plate, tapered orifice plate rear end is provided with temperature sensor, pressure transmitter, differential pressure
Transmitter and temperature sensor are connected with flow computer by data wire.But the bellmouth flowmeter involved by this patent
Easily make gas well mouth flow irregularities increase, and then the taper orifice plate sealing means increased in error, and this patent is only fitted
Closing the metering of mesolow gas well, range is narrower；It addition, this flowmeter structure uses split type, will primary instrument collection pressure
Power, differential pressure, temperature signal are by holding wire transmission to independent Flow Meter Based, and structure disperses is complicated.
Such as Chinese patent ZL201220380321.5, discloses a kind of gas as single gas well gas output of fluid on-line metering dress
Put, including metering straight tube before being connected with the flange A of match of pipe diameter, front metering straight tube front end be provided with commutator, pressure control valve L and
Pressure transducer, rear end connects metering device body flange C；After body flange D corresponding with body flange C connects, metering is straight
Pipe, rear metering straight tube rear end is provided with temperature sensor, and connects the flange B with match of pipe diameter；Body flange C is controlled by pressure
Valve M connecting integration instrument, body flange D passes through pressure control valve N connecting integration instrument, body flange C end face connection footpath
To sealing gasket E, body flange D end face connects sealing gasket F radially；Restricting orifice with double horn hole be located at sealing gasket E and
Between sealing gasket F, it is connected in body flange C hole with the center column of prominent orifice plate one side end face, in center column, is provided with two
Individual in opposite direction, necking is with footpath and the bellmouth orifice that communicates, the expanding mouth of forward direction bellmouth orifice and the same footpath of body flange C endoporus；
Restricting orifice is provided with inspection operation handle.
This utility model metering device is installed on gas transmission line by flange A, B.Natural gas well product first passes through commutator
Rectification, is mist flow and slug flow fluidised form by the individual well pipe defeated fluidised form readjusting and simplifying of fluid frequent changes, the fluid after being rectified
The most premenstrual metering straight tube turbulent flow and restricting orifice throttle, and form differential pressure, and pressure difference data is by light current and lower powered integrated instrument
Interior flow rate calculation module is controlled by pressure control valve M and N and is gathered；By the pressure transducer on front metering straight tube and
Pressure control valve controls to gather pressure；Collecting temperature is controlled, by incoming for data one by the temperature sensor on rear metering straight tube
The operating mode air-liquid yield that body instrument calculates, is then converted to mark gas production and the Liquid output of individual well under condition.
This effusion meter realizes automatically gathering and teletransmission of gas well liquid loading data, accurate measuring when continuous-stable goes out liquid gas well
Spending higher, but go out liquid for gas well interval, fluidised form is that slug flow time error is big.
Utility model content
This utility model provides a kind of gas well mouth gas-liquid two-phase metering device, sets up at gas-liquid biphase flowmeter leading portion
Small buffer tank, makes slug flow carry out liquid and slowly flows through gas-liquid biphase flowmeter after surge tank is detained, solve existing gas-liquid two
Multi-phase flowmeter is applicable to gas well and the most steadily goes out the metering of liquid operating mode, problem unmeasurable to the slug flow going out suddenly liquid.
The technical solution adopted in the utility model is as follows:
A kind of gas well mouth gas-liquid two-phase metering device, including surge tank and gas-liquid biphase flowmeter, described gas-liquid two
Multi-phase flowmeter includes upstream metering pipeline section and downstream metering pipeline section, is provided with cone between upstream metering pipeline section and downstream metering pipeline section
Shape orifice plate, described surge tank be arranged on upstream metering pipeline section on, be provided with deflector in surge tank tank, deflector by surge tank every
From becoming upstream chamber and downstream chamber, upstream chamber connects bottom surge tank with downstream chamber.
Described taper orifice plate upper end is connected by the first connecting pipe respectively has differential pressure transmitter, by the second connecting pipe even
It is connected to flow measurement instrument.
It is provided with flow conditioner in described upstream metering pipeline section, in downstream metering pipeline section, is provided with temperature transmitter,
And temperature transmitter electrically connects with flow measurement instrument.
It is uncovered that the arrival end of described taper orifice plate and the port of export are inverted cone, the opening angle of the port of export be less than into
The opening angle of mouth end.
It is provided with flowing hole on described flow conditioner.
The two ends of described upstream metering pipeline section are respectively arranged with the first adpting flange and the second adpting flange, and downstream is measured
The two ends of pipeline section are respectively arranged with the 3rd adpting flange and the 4th adpting flange.
The first described connecting pipe is arranged on the top of the second adpting flange, and the second connecting pipe is arranged on the 3rd adpting flange
Top.
It is respectively arranged with pilot control valve on described the first connecting pipe, the second connecting pipe.
Described deflector is arranged close to surge tank tank and exports at 1/5 tank diameter.
Bottom described surge tank, sidewall is provided with sewage draining exit.
When gas well unexpected band liquid, when there is slug flow, first gas-liquid mixture fluid flows into surge tank upper chamber, because volume is dashed forward
So increasing, rate of flow of fluid reduces suddenly, and liquid is deposited in tank by action of gravity, when air-flow flows to from pot bottom upstream chamber
After downstream chamber, fluid passage diminishes suddenly, and air-flow velocity increases, and the air-flow that downstream chamber flows up is by downstream chamber liquid
Gradually carry out surge tank, upstream chamber liquid gradually flow to downstream chamber supplement, thus avoid slug flow directly through
There is the problem that error in dipping is big in gas-liquid biphase flowmeter.
The beneficial effects of the utility model:
This utility model arranges surge tank in gas-liquid biphase flowmeter front end, makes the big quantity of fluid in well head slug flow first
Surge tank sedimentation be detained, the most gradually taken out of by air-flow flow through gas-liquid biphase flowmeter metering, it is to avoid slug flow directly through
Gas-liquid biphase flowmeter, solves the problem that gas well occurs that during slug flow, error in dipping is big.
Accompanying drawing explanation
Fig. 1 is gas well mouth gas-liquid two-phase metering device structural representation；
Fig. 2 is the structural representation of gas-liquid biphase flowmeter；
Fig. 3 is gas well mouth gas-liquid two-phase metering device installation procedure figure；
Fig. 4 is the structural representation of taper orifice plate.
Description of reference numerals:
A-fluid flow direction
1-surge tank, 2-deflector, 3-sewage draining exit, 4-gas-liquid biphase flowmeter, 5-flow measurement instrument, 6-differential pressure transmission
Device, 7-taper orifice plate, 701-arrival end, the 702-port of export, 703-steel ring, 8-flow conditioner, 9-temperature transmitter, 10-leads
Hydraulic pipe, 101-the first connecting pipe, 102-the second connecting pipe, 11-upstream metering pipeline section, 12-downstream metering pipeline section, 13-
First adpting flange, 14-the second adpting flange, 15-the 3rd adpting flange, 16-the 4th adpting flange, 17-pilot control valve,
18-gas well mouth, 19-block valve, 20-gas-liquid two-phase metering device, 21-gate valve, 22-flow line.
Detailed description of the invention
Embodiment 1:
As it is shown in figure 1, a kind of gas well mouth gas-liquid two-phase metering device, including surge tank 1 and gas-liquid biphase flowmeter 4,
Described gas-liquid biphase flowmeter 4 includes upstream metering pipeline section 11 and downstream metering pipeline section 12, upstream metering pipeline section 11 and downstream
Being provided with taper orifice plate 7 between metering pipeline section 12, described surge tank 1 is arranged on upstream metering pipeline section 11, in surge tank 1 tank
Being provided with deflector 2, surge tank 1 is isolated into upstream chamber and downstream chamber, upstream chamber and downstream chamber in buffering by deflector 2
Connect bottom tank 1.
This utility model arranges surge tank 1 in gas-liquid biphase flowmeter front end, is provided with deflector 2 in tank, and deflector 2 will
Surge tank is isolated into two, upstream and downstream chamber, and two, upstream and downstream chamber connects at pot bottom, arrow in the flow direction of fluid such as Fig. 1
Direction shown in a, fluid enters tank upstream chamber tailing edge deflector and flows to pot bottom, then from pot bottom stream from surge tank top
To surge tank downstream chamber, cavity bottom flows upwardly to tank outlet downstream, then flows through gas-liquid biphase flowmeter and measures, leads
Stream plate installation site exports at 1/5 tank diameter near tank, makes fluid at lower chambers flow velocity much larger than upper chamber's flow velocity.When gas well is dashed forward
So band liquid, when there is slug flow, first gas-liquid mixture fluid flows into surge tank upper chamber, because volume increases suddenly, rate of flow of fluid
Suddenly reducing, liquid is deposited in tank by action of gravity, when air-flow is after pot bottom upstream chamber flows to downstream chamber, and fluid
Passage diminishes suddenly, and air-flow velocity increases, and downstream chamber liquid is gradually carried out buffering by the air-flow that downstream chamber flows up
Tank, upstream chamber liquid gradually flows to downstream chamber and supplements, thus avoids slug flow directly through gas-liquid biphase flowmeter
The problem that error in dipping is big occurs.
Embodiment 2:
On the basis of embodiment 1, shown in Fig. 2, described gas-liquid biphase flowmeter 4 is the board-like biphase gas and liquid flow of bellmouth
Gauge, it includes upstream metering pipeline section 11 and downstream metering pipeline section 12, between upstream metering pipeline section 11 and downstream metering pipeline section 12
Being provided with taper orifice plate 7, the upper end of taper orifice plate 7 is connected by impulse piping system 10 differential pressure transmitter 6 and flow measurement
Instrument 5, described impulse piping system 10 includes the first connecting pipe 101 and two connecting pipes 102, and the upper end of taper orifice plate 7 is by the
One connecting pipe 101 connects differential pressure transmitter 6, and being connected by the second connecting pipe 102 has flow measurement instrument 5.Described upstream is measured
It is provided with flow conditioner 8 in pipeline section 11, in downstream metering pipeline section 12, is provided with temperature transmitter 9, and temperature transmitter 9 and stream
Amount gauge 5 electrically connects.
As shown in Figure 4, described taper orifice plate 7 passes through steel ring respectively with upstream metering pipeline section 11 and downstream metering pipeline section 12
703 closely cooperate, and steel ring 703 has sealing function, can meet the metering of high-pressure gas well well head, the entrance of described taper orifice plate 7
It is uncovered that end 701 and the port of export 702 are inverted cone, and the opening angle of the port of export 702, less than the angular aperture of arrival end 701, is being met
During clean fluid non-to well head, it is possible to use airflow scouring effect is cleaned.
It is provided with flowing hole on described flow conditioner 8, it is possible to decrease resulting fluid disturbance, adjusts gas liquid two-phase flow
Scrambling, and then make gas-liquid two-phase uniformly mix, improves the measuring accuracy of gas-liquid biphase flowmeter, it is achieved gas-liquid two-phase regardless of
From on-line metering.
The two ends of described upstream metering pipeline section 11 are respectively arranged with the first adpting flange 13 and the second adpting flange 14, under
The two ends of trip metering pipeline section 12 are respectively arranged with the 3rd adpting flange 15 and the 4th adpting flange 16.Described impulse piping system
10 include the first connecting pipe 101 being arranged on the second adpting flange 14 top and are arranged on the second of the 3rd adpting flange 15 top
Connecting pipe 102.It is respectively arranged with pilot control valve on first described connecting pipe the 101, second connecting pipe 102.First connecting pipe
101 and second connecting pipe 102 by gas-liquid fluid introduce pipe in, detect differential pressure, pressure signal, pilot control by differential pressure transmitter 6
Valve 17 processed plays and blocks source of the gas purpose, when pulling down flow measurement instrument 5 or differential pressure transmitter 6 needs when safeguarding, can close pilot
Control valve 17, purges pressure guiding pipeline also by pilot control valve 17.
Embodiment 3:
On the basis of above-described embodiment, as it is shown on figure 3, from gas well mouth 18 gas-liquid two-phase fluid out through a series of
Elbow, valve (such as block valve 19) enter gas-liquid two-phase metering device 20 afterwards, then enter through gate valve 21 and remove flow line 22.
After a series of elbows, valve, gas-liquid two-phase metering device is entered from Wellbore of Gas Wells gas-liquid two-phase fluid out,
First passing through surge tank 1, when fluid is slug flow, fluid collides with deflector 2 after entering surge tank, adds that volume is dashed forward
So increasing, rate of flow of fluid drastically reduces, and major part liquid is the most tank bottoms by gravitational settling, thus avoids slug flow to flow through gas-liquid two
Multi-phase flowmeter 4 and cannot measure, air-flow according to refluence plate effect change flow direction, gradually carry being settled down to tank bottoms liquid
Gas-liquid biphase flowmeter metering, total mass flow rate that Real-time Collection gas-liquid biphase flowmeter records, fluid-mixing is flowed through in going out tank
Operating mode density, temperature parameter, the pressure parameter that pressure transducer records, the gas-liquid single-phase density parameter of input, calculate gas-liquid
Each phase volume flow, after having measured, gas-liquid fluid enters through gate valve etc. and removes flow line.
Claims (10)
1. a gas well mouth gas-liquid two-phase metering device, it is characterised in that: include surge tank (1) and gas-liquid biphase flowmeter
(4), described gas-liquid biphase flowmeter (4) includes upstream metering pipeline section (11) and downstream metering pipeline section (12), upstream gauge line
Being provided with taper orifice plate (7) between section (11) and downstream metering pipeline section (12), described surge tank (1) is arranged on upstream gauge line
In section (11), being provided with deflector (2) in surge tank (1) tank, surge tank (1) is isolated into upstream chamber and downstream by deflector (2)
Chamber, upstream chamber and downstream chamber connect in surge tank (1) bottom.
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 1, it is characterised in that: described bellmouth
Plate (7) upper end is connected by the first connecting pipe (101) respectively differential pressure transmitter (6), and being connected by the second connecting pipe (102) is had
Flow measurement instrument (5).
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 1, it is characterised in that: described upstream meter
It is provided with flow conditioner (8) in buret section (11), in downstream metering pipeline section (12), is provided with temperature transmitter (9), and temperature
Transmitter (9) electrically connects with flow measurement instrument (5).
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 1, it is characterised in that: described bellmouth
It is uncovered that the arrival end (701) of plate (7) and the port of export (702) are inverted cone, and the opening angle of the port of export (702) is less than arrival end
(701) opening angle.
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 3, it is characterised in that: described flowing is adjusted
Whole device is provided with flowing hole on (8).
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 1, it is characterised in that: described upstream meter
The two ends of buret section (11) are respectively arranged with the first adpting flange (13) and the second adpting flange (14), downstream metering pipeline section (12)
Two ends be respectively arranged with the 3rd adpting flange (15) and the 4th adpting flange (16).
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 2, it is characterised in that: described first is led
Pressure pipe (101) is arranged on the top of the second adpting flange (14), and the second connecting pipe (102) is arranged on the 3rd adpting flange (15)
Top.
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 2, it is characterised in that: described first is led
It is respectively arranged with pilot control valve (17) on pressure pipe (701), the second connecting pipe (702).
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 1, it is characterised in that: described deflector
(2) it is arranged close to surge tank (1) tank export at 1/5 tank diameter.
A kind of gas well mouth gas-liquid two-phase metering device the most according to claim 1, it is characterised in that: described buffering
Tank (1) bottom sidewall is provided with sewage draining exit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620684043.0U CN205858315U (en) | 2016-06-30 | 2016-06-30 | A kind of gas well mouth gas-liquid two-phase metering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620684043.0U CN205858315U (en) | 2016-06-30 | 2016-06-30 | A kind of gas well mouth gas-liquid two-phase metering device |
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| CN205858315U true CN205858315U (en) | 2017-01-04 |
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| CN201620684043.0U Active CN205858315U (en) | 2016-06-30 | 2016-06-30 | A kind of gas well mouth gas-liquid two-phase metering device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225436A (en) * | 2018-01-26 | 2018-06-29 | 北京永瑞达科技有限公司 | A kind of gas-liquid two-phase real time measure device of normal pressure state |
| CN108507715A (en) * | 2018-06-29 | 2018-09-07 | 无锡昆仑富士仪表有限公司 | A kind of floating cell suitable for differential pressure transmitter |
| CN114440961A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Small-size not two-phase metering device and measurement system that separate |
-
2016
- 2016-06-30 CN CN201620684043.0U patent/CN205858315U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225436A (en) * | 2018-01-26 | 2018-06-29 | 北京永瑞达科技有限公司 | A kind of gas-liquid two-phase real time measure device of normal pressure state |
| CN108507715A (en) * | 2018-06-29 | 2018-09-07 | 无锡昆仑富士仪表有限公司 | A kind of floating cell suitable for differential pressure transmitter |
| CN114440961A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Small-size not two-phase metering device and measurement system that separate |
| CN114440961B (en) * | 2020-11-06 | 2024-04-19 | 中国石油化工股份有限公司 | Small-sized non-separation two-phase metering device and metering system |
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