CN200979430Y

CN200979430Y - A flow measurement device for two-phase and three-media of gas-water-oil

Info

Publication number: CN200979430Y
Application number: CN 200620167735
Authority: CN
Inventors: 卢玖庆
Original assignee: Individual
Current assignee: Xinjiang Zhongyuan Tianneng Oil & Gas Technology Co Ltd
Priority date: 2006-11-28
Filing date: 2006-11-28
Publication date: 2007-11-21
Anticipated expiration: 2016-11-28

Abstract

A gas-water-oil two-phase three-dielectric flow measuring device of the utility model belongs to a flow measuring field, solving the on-line continuous automatic self-scaling problem. The utility model comprises a filter, a pressure transmitter, a wedge-shaped flow gage, a temperature sensor, a density meter and a flow computer, wherein the upper end on the vertical section of an oil admitting pipe is connected with the standard container, the standard container is arranged with a level gage and an oil-water measuring instrument, the top of the standard container is connected with a gas discharging pipe, the gas discharging pipe is arranged with a gas flow gage and a pressure meter and is connected with an oil discharging pipe through a triple valve, and the flow computer are separately connected with the pressure transmitter, wedge-shaped flow gage, gas flow gage, triple valve, temperature sensor, density meter, oil-water measuring instrument and the level gage through circuit. The utility model is suitable for the on-line continuous automatic self-scaling of an unattended measuring station and a single-well flowing system, thereby improving the automation level, accuracy and reliability of the on-line phase-splitting measurement.

Description

Gas, water, oily two-phase three rate-of flow measurement mechanisms

One, technical field the utility model belongs to the fields of measurement of flow, particularly relates to a kind of gas, water, oily two-phase three rate-of flow measurement mechanisms.

Two, the online phase-splitting metering of background technology gas, water, oily fluid-mixing has crucial meaning on the oil field.But because gas phase, fluidised form difference different with liquid phase flow rate, ratio are indefinite, and usually be intermittent flow, online phase-splitting metering is very difficult.And, for various flowmeter products, certain operating mode flow range is arranged all, when flow is little to a certain degree the time, flowmeter can't be measured.At present both at home and abroad the multiphase flow rate of development has the use test separation vessel in respect of utilizing gamma rays, and shortcoming is to take up room greatly, and maintenance is big, and monitoring a bite well will take a long time, and test separator can't the continuous monitoring oil well dynamically.This not only causes the instrument structure complexity, cost an arm and a leg, and radioelement may be unfavorable to health, crude oil belongs to the viscous medium of the content of wax in addition, long-term use easy fouling wax deposition, cause some multi-phase flowmeters to need debugging often, and debugging is demarcated and needed the calibration facility that moves, the each demarcation connects very trouble, and workload is very big.

Three, the summary of the invention the purpose of this utility model is under unseparated situation, a kind of both energy measurements high viscosity is provided, low reynolds number medium fluid-mixing, again can be accurate, measure casinghead gas easily, water, oil two-phase three rate-of flow measurement mechanisms, solved on-line continuous automatically from the problem of demarcating, it comprises filtrator, pressure unit, the wedge type flowmeter, temperature sensor, densitometer and flow computer, filtrator is communicated with in-line by valve, the horizontal pipeline section of in-line is connected with pressure unit, wedge type flowmeter and temperature sensor, be connected with densitometer on the vertical pipeline section of in-line through 90 ° of elbows, the vertical pipeline section of in-line upper end is communicated with volumetric standard by valve, volumetric standard is composed in parallel by 1 or 2 to 15 volumetric standards, volumetric standard is provided with liquid level gauge and oil/water measurement instrument, liquid level is counted magnetic turnover panel liquid level gauge, it is provided with upper limit position switch and lower position switch, the volumetric standard top is communicated with outlet pipe, outlet pipe is provided with gas meter and tensimeter, and by T-valve and fuel-displaced pipeline connection, T-valve is electronic or manual three-way valve, flow computer by circuit respectively with pressure unit, the wedge type flowmeter, gas meter, T-valve, temperature sensor, densitometer, on oil/water measurement instrument and the liquid level gauge, the lower position switch connects.The utility model is applicable to that unattended test satellite location and individual well flow system on-line continuous automatically from demarcating, have improved automatization level and the accuracy and the reliability of online phase-splitting metering.

Four, description of drawings Fig. 1 is a structural representation of the present utility model.

Five, embodiment is described further installation of the present utility model and use below in conjunction with Fig. 1, this device comprises filtrator 1, pressure unit 2, wedge type flowmeter 3, temperature sensor 7, densitometer 9 and flow computer 4, filtrator 1 is communicated with in-line 16 by valve 11, in-line 16 horizontal pipeline sections are connected with pressure unit 2, wedge type flowmeter 3 and temperature sensor 7, be connected with densitometer 9 on the in-line 16 vertical pipeline sections through 90 ° of elbows, in-line 16 vertical pipeline section upper ends are communicated with volumetric standard 8 by valve 11, volumetric standard 8 is composed in parallel by 1 or 2 to 15 volumetric standards, volumetric standard 8 is provided with liquid level gauge 12 and oil/water measurement instrument 10, liquid level gauge 12 is a magnetic turnover panel liquid level gauge, it is provided with upper limit position switch 14 and lower position switch 13, volumetric standard 8 tops are communicated with outlet pipe 18, outlet pipe 18 is provided with gas meter 5 and tensimeter 15, and be communicated with fuel-displaced pipeline 17 by T-valve 6, T-valve 6 is electronic or manual three-way valve, flow computer 4 by circuit respectively with pressure unit 2, wedge type flowmeter 3, gas meter 5, T-valve 6, temperature sensor 7, densitometer 9, on oil/water measurement instrument 10 and the liquid level gauge 12,

lower position switch

14,13 connect, fluid-mixing enters filtrator 1 under pressure, through wedge type flowmeter 3, flow into volumetric standard 8 by the densitometer on the in-line 16 vertical pipeline sections 9 then, and entering fuel-displaced pipeline 17 from volumetric standard 8 bottoms, flow computer 4 is wedge type flowmeter 3, densitometer 9, pressure unit 2, the signal that temperature sensor 7 transmits is converted into pure liquid measure and pure tolerance.When needs carry out timing signal to two-phase three rate-of flow devices, flow computer 4 is by Automatic Program that configures or manual-lock T-valve 6, volumetric standard 8 bottoms are closed, top outlet pipe 18 is open-minded, this moment, the liquid measure in volumetric standard 8 rose, gas flows into gas meter 5 from the top, when the liquid measure in the volumetric standard 8 rises, on the liquid level gauge 12,

lower position switch

14,13 signal input flow rate computing machines 4, standard volume in the certain hour is converted into instantaneous liquid measure, gas meter 5 so just can accurately calibrate liquid measure and tolerance to tolerance input flow rate computing machine 4.In addition when liquid level rises to the upper limit position switch 14 of liquid level gauge 12, oil/water measurement instrument 10 can be the moisture differential pressure signal input flow rate of oil computing machine 4, have pure oil density and pure water density in the flow computer 4, flow computer 4 just can be regarded as fuel-displaced moisture number percent like this.

Claims

1, gas, water, oil two-phase three rate-of flow measurement mechanisms, comprise filtrator, pressure unit, the wedge type flowmeter, temperature sensor, densitometer and flow computer, filtrator is communicated with in-line by valve, the horizontal pipeline section of in-line is connected with pressure unit, wedge type flowmeter and temperature sensor, be connected with densitometer on the vertical pipeline section of in-line through 90 ° of elbows, it is characterized in that the vertical pipeline section of in-line upper end is communicated with volumetric standard, volumetric standard is provided with liquid level gauge and oil/water measurement instrument, the volumetric standard top is communicated with outlet pipe, outlet pipe is provided with gas meter, and by T-valve and fuel-displaced pipeline connection, flow computer by circuit respectively with pressure unit, the wedge type flowmeter, gas meter, T-valve, temperature sensor, densitometer, the oil/water measurement instrument is connected with liquid level gauge.

2, gas according to claim 1, water, oily two-phase three rate-of flow measurement mechanisms is characterized in that described volumetric standard is composed in parallel by 1 or 2 to 15 volumetric standards.

3, gas according to claim 1, water, oily two-phase three rate-of flow measurement mechanisms is characterized in that described liquid level counts magnetic turnover panel liquid level gauge, and are provided with upper limit position switch and lower position switch.

4, gas according to claim 1, water, oily two-phase three rate-of flow measurement mechanisms is characterized in that described T-valve is electronic or manual three-way valve.

5, gas according to claim 1, water, oily two-phase three rate-of flow measurement mechanisms is characterized in that outlet pipe is provided with tensimeter.