CN104634423B - The method of water injection well in oil fields high-pressure flowmeter on-line proving - Google Patents
The method of water injection well in oil fields high-pressure flowmeter on-line proving Download PDFInfo
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- CN104634423B CN104634423B CN201510066746.7A CN201510066746A CN104634423B CN 104634423 B CN104634423 B CN 104634423B CN 201510066746 A CN201510066746 A CN 201510066746A CN 104634423 B CN104634423 B CN 104634423B
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Abstract
The invention discloses a kind of method of water injection well in oil fields high-pressure flowmeter on-line proving, recover three steps including workflow reengineering, demarcation and flow, wherein, workflow reengineering is that the filter core in the filter on distributing room for water injection branch line is replaced with into proving flowmeter, then demarcated, the multiple flowmeters demarcated one by one on the branch line using proving flowmeter using the calibration algorithm of increment.On-line proving conveniently, accurately and rapidly can be carried out to the high-pressure flowmeter in water injection well using the above method, the dismounting for avoiding high-pressure flowmeter is separately and exclusively demarcated and thus caused flowmeter failure.
Description
Technical field
The present invention relates to flow meter calibration technology, more particularly to a kind of on-line proving to water injection well in oil fields high-pressure flowmeter
Method.
Background technology
The well head of water injection well in oil fields is generally provided with distributing room for water injection, as shown in Figure 1.After water distribution branch line enters distributing room for water injection, pass through
Filter, by different high-pressure flowmeters to each well water filling.To obtain higher oil recovery quality and efficiency, each injection point
Water injection rate must strictly control.Therefore, high-pressure flowmeter must be spaced demarcation in three months once, to ensure that its flow is accurate.Generally
Way be after high-pressure flowmeter is split out from Water flow-path, deliver to standard detection platform and demarcated.This method energy convection current
Gauge carries out accurate calibration, but can not often continue to ensure to seal and causing flowmeter to fail when flowmeter, which returns, to be installed, and makes
Wasted into property loss and manpower.Reason is between the water injection pressure 15-20MPa of distributing room for water injection (because of different work block bottom
Characteristic is different and varies slightly), when high-pressure flowmeter, sealing property declines after dismounting.The design for improving flowmeter can solve
This problem, but the replacing of the well head flowmeter of the existing a large amount of water injection wells in oil field is then quite huge investment.Directly from high pressure
Flowmeter discharges water and also can be calibrated, but troublesome in poeration, and reliability is low, is also easy to cause environmental pollution.The mark of these flowmeters
Determine problems demand solution.
The content of the invention
Problem to be solved by this invention, which is to provide one kind, need not dismantle flowmeter, will not cause environmental pollution can be to note
The method that the high-pressure flowmeter of well well head carries out accurate, convenient on-line proving.
To achieve the above objectives, the present invention, which adopts the following technical scheme that, is achieved：
A kind of method of water injection well in oil fields high-pressure flowmeter on-line proving, it is characterised in that including workflow reengineering, demarcation and
Flow recovers three steps, wherein：
The first step, workflow reengineering：Distributing room for water injection feed water valve and Ge Lu high-pressure flowmeter valves are closed, removes the filter in filter
Core, the replacement of one connection commercial standard flowmeter of proving flowmeter or installation of an eddy currents is installed in former filter core position
Structure, now distributing room for water injection supplies water pass through proving flowmeter after supply the high-pressure flowmeter of each well head；
Second step, demarcation：Distributing room for water injection feed water valve is progressively opened, in addition to high-pressure flowmeter is calibrated, it is high to close other each roads
The valve of pressure type flowmeter, regulation are calibrated the flow of high-pressure flowmeter, take under each flow and once effectively measure, n times are effectively surveyed
After amount, the flow modificatory coefficient of the high-pressure flowmeter is：
In formula, K is flow modificatory coefficient, and the gauge outfit coefficient of high-pressure flowmeter is calibrated according to this coefficient adjustment；QiFor
The ith measured value of proving flowmeter；qiTo be calibrated the ith show value of flowmeter；N is overall measurement number；When this is marked
After the completion of the demarcation of constant current gauge, close this and be calibrated the valve of flowmeter, and open the valve of next flowmeter to be calibrated, weight
Multiple above step, the demarcation until completing all flowmeters；
3rd step, flow are recovered：By eddy currents proving flowmeter or the replacing structure for connecting commercial standard flowmeter from mistake
Removed on filter, recover filter element, and recover distributing room for water injection water filling flow, recover normal water filling operating mode.
In the above method, the eddy currents proving flowmeter, the arrival end of its core body is provided with inlet seal, inside the core body
Runner is provided with eddy generator and vortex street sensor, the stream connect outside disk input filter that flow meter signal passes through core body bottom
Gauge gauge outfit；Core body bottom sets the by-pass prot of connection filter outlet.
The replacing structure is that the filter inlet in former filter core upper end sets the water outlet seal of tube, in former sealing flange position
New sealing flange is installed, novel sealing flange is provided with outlet pipe and return pipe；Wherein outlet pipe by former filtration cartridge volume with going out
Water pipe sealing is connected；Return pipe connects filter outlet, and commercially available normal stream is installed between outlet pipe water outlet and backwater water inlet tube
Gauge.
Compared with the conventional method, also will not be from it is an advantage of the invention that matching somebody with somebody the high-pressure flowmeter in Water flow-path without dismounting
High-pressure flowmeter is discharged water and causes environmental pollution, and the mark of the simple boarding of structure of modification installation one is carried out just with former filter
Quasi- flowmeter can carry out quick, accurate, convenient on-line proving to the high-pressure flowmeter of wellhead of water injection well, avoid high-pressure spray
The dismounting of gauge is separately and exclusively demarcated and thus caused flowmeter failure, and it is easy to recover flow, not only energy-saving and emission-reduction but also significantly
Reduce calibration cost.
Brief description of the drawings
Fig. 1 is the general flow schematic diagram of existing distributing room for water injection.
Fig. 2 is the distributing room for water injection schematic flow sheet using the inventive method.
Fig. 3 is the internal structure of distributing room for water injection conventional filters.
Fig. 4 is a kind of mode that the inventive method installs proving flowmeter on Fig. 3 filters.
Fig. 5 is the another way that the inventive method installs proving flowmeter on Fig. 3 filters.
Fig. 1 is into Fig. 5：1st, injection point；2nd, high-pressure flowmeter；3rd, water distribution branch line；4th, feed water valve；5th, filter；6th, standard
Flowmeter；7th, filter inlet；8th, filter outlet；9th, filter core；10th, sealing flange；11st, inlet seal；12nd, proving flowmeter
Core body；13rd, vortex street sensor；14th, by-pass prot；15th, disk is connect；16th, eddy generator；17th, the water outlet seal of tube；18th, outlet pipe；
19th, return pipe；20th, novel sealing flange.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
Embodiment 1
With reference to Fig. 3 of figure 2 and Fig. 4, a kind of method of water injection well in oil fields high-pressure flowmeter on-line proving, comprise the following steps：
First, workflow reengineering
The feed water valve 4 and the valve of high-pressure flowmeter 2 being first shut off on water distribution branch line 3, then by dismantling sealing flange
10 remove the filter core 9 in filter 5；Proving flowmeter 6 is installed in former filter core position.Proving flowmeter 6 can use eddy currents stream
Gauge (Fig. 4).The arrival end of proving flowmeter core body 12 is provided with inlet seal 11, it is ensured that the water under high pressure into filter all flows
Enter proving flowmeter；The inner flow passage of core body 12 is provided with eddy generator 16 and vortex street sensor 13, and flow meter signal passes through core
The disk 15 that connects of body bottom inputs gauge outfit；Water under high pressure flows out from the by-pass prot 14 of core body bottom, is flowed out from filter outlet 8.Now
Water distribution branch line supplies water by the high-pressure flowmeter 2 that each well head is supplied after proving flowmeter 6.
2nd, demarcate
Distributing room for water injection feed water valve 4 is progressively opened, in addition to flowmeter is calibrated, closes the valve of other each road high-pressure flowmeters；
Regulation takes once effectively measurement by the flow of absolute altitude pressure type flowmeter under each flow, after n times effectively measurement, the high-pressure flowmeter
Flow modificatory coefficient be
In formula, K is flow regulation coefficient, and the gauge outfit coefficient of the high-pressure flowmeter is adjusted according to this flow regulation coefficient；
QiFor the ith measured value of proving flowmeter 6；qiFor the ith show value of measured stream gauge；N is overall measurement number.When the stream
After the completion of gauge demarcation, close the valve of the flowmeter, and open it is next treat target flowmeter valve, repeat step two, directly
To the demarcation for completing all online flowmeters.
3rd, flow is recovered
Proving flowmeter is removed from filter, loads onto filter core 9, recovers the original structure of filter, and recover distributing room for water injection
Water filling flow, recover normal water filling operating mode (Fig. 1).
Embodiment 2
With reference to Fig. 3 of figure 2 and Fig. 5, the method for another water injection well in oil fields high-pressure flowmeter on-line proving, including following step
Suddenly：
First, workflow reengineering
The feed water valve 4 and the valve of high-pressure flowmeter 2 being first shut off on water distribution branch line 3, then by dismantling sealing flange
10 remove the filter core 9 in filter 5；Filter inlet 7 in the former upper end of filter core 9 sets the water outlet seal of tube 17, in former Sealing Method
New sealing flange 20 is installed in blue position, and novel sealing flange is provided with outlet pipe 18 and return pipe 19；Wherein outlet pipe passes through original
Filtration cartridge volume is connected with the water outlet seal of tube 17, it is ensured that the water under high pressure of inflow filter all flows out from outlet pipe；Return pipe connected
Filter outlets 8.Proving flowmeter 6 is installed, proving flowmeter can directly from the market between outlet pipe water outlet and backwater water inlet tube
Choose；Water under high pressure flows back to filter after proving flowmeter from return pipe, is flowed out from filter outlet.Now water distribution branch line supplies
Water is by supplying each well head high-pressure flowmeter 2 after proving flowmeter 6.
2nd, demarcate
It is same as Example 1.
3rd, flow is recovered
It is same as Example 1.
Claims (3)
- A kind of 1. method of water injection well in oil fields high-pressure flowmeter on-line proving, it is characterised in that including workflow reengineering, demarcation and stream Tri- steps of Cheng Huifu, wherein：The first step, workflow reengineering：Distributing room for water injection feed water valve and Ge Lu high-pressure flowmeter valves are closed, removes the filter core in filter, The replacing structure of one connection proving flowmeter of proving flowmeter or installation of one eddy currents is installed in former filter core position, this When distributing room for water injection supply water pass through proving flowmeter after supply the high-pressure flowmeter of each well head；Second step, demarcation：Distributing room for water injection feed water valve is progressively opened, in addition to high-pressure flowmeter is calibrated, closes other each road high-pressure sprays The valve of gauge, regulation are calibrated the flow of high-pressure flowmeter, and effectively measurement is taken once under each flow, after n times effectively measurement, The flow modificatory coefficient of the high-pressure flowmeter is：<mrow> <mi>K</mi> <mo>=</mo> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>2</mn> </mrow> <mi>N</mi> </munderover> <mfrac> <mrow> <msub> <mi>Q</mi> <mi>i</mi> </msub> <mo>-</mo> <msub> <mi>Q</mi> <mrow> <mi>i</mi> <mo>-</mo> <mn>1</mn> </mrow> </msub> </mrow> <mrow> <msub> <mi>q</mi> <mi>i</mi> </msub> <mo>-</mo> <msub> <mi>q</mi> <mrow> <mi>i</mi> <mo>-</mo> <mn>1</mn> </mrow> </msub> </mrow> </mfrac> </mrow> <mrow> <mi>N</mi> <mo>-</mo> <mn>1</mn> </mrow> </mfrac> <mo>;</mo> </mrow>In formula, K is flow modificatory coefficient, and the gauge outfit coefficient of high-pressure flowmeter is calibrated according to this coefficient adjustment；QiFor normal stream The ith measured value of gauge；qiTo be calibrated the ith show value of flowmeter；N is overall measurement number；When this is calibrated flow After the completion of meter demarcation, close this and be calibrated the valve of flowmeter, and open the valve of next flowmeter to be calibrated, be more than repetition Step, the demarcation until completing all flowmeters；3rd step, flow are recovered：Eddy currents proving flowmeter or the replacing structure for connecting proving flowmeter are torn open from filter Remove, recover filter element, and recover distributing room for water injection water filling flow, recover normal water filling operating mode.
- 2. the method for water injection well in oil fields high-pressure flowmeter on-line proving as claimed in claim 1, it is characterised in that filtered when in original The normal flow timing of an eddy currents, the eddy currents proving flowmeter are installed in core position, the arrival end of its core body be provided with into Mouth sealing, the core body inner flow passage are provided with eddy generator and vortex street sensor, and flow meter signal connects disk by core body bottom Flowmeter meter outside input filter；Core body bottom sets the by-pass prot of connection filter outlet.
- 3. the method for water injection well in oil fields high-pressure flowmeter on-line proving as claimed in claim 1, it is characterised in that filtered when in original During the replacing structure of one connection proving flowmeter of core position installation, the replacing structure is that the filter in former filter core upper end enters Mouthful the water outlet seal of tube is set, new sealing flange is installed in former sealing flange position, novel sealing flange is provided with outlet pipe and returned Water pipe；Wherein outlet pipe is connected by former filtration cartridge volume with the water outlet seal of tube；Return pipe connects filter outlet, outlet pipe water outlet Proving flowmeter is installed between backwater water inlet tube.
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| CN201510066746.7A CN104634423B (en) | 2015-02-09 | 2015-02-09 | The method of water injection well in oil fields high-pressure flowmeter on-line proving |
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| CN201510066746.7A CN104634423B (en) | 2015-02-09 | 2015-02-09 | The method of water injection well in oil fields high-pressure flowmeter on-line proving |
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| CN104634423B true CN104634423B (en) | 2017-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106153162B (en) * | 2016-08-31 | 2020-03-06 | 新奥科技发展有限公司 | Gas flowmeter detection equipment |
| CN106768209A (en) * | 2017-02-17 | 2017-05-31 | 中国石油化工股份有限公司 | Oil well watering digital flowmeter calibrator (-ter) unit and method |
| CN108331564A (en) * | 2018-02-13 | 2018-07-27 | 新疆石油工程设计有限公司 | Integrated automatic well-selecting on-line proving water dispensing apparatus |
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| EP0126262A1 (en) * | 1983-04-18 | 1984-11-28 | Lang Apparatebau Gmbh | Device for the operation and monitoring of a dosage apparatus |
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| CN203502093U (en) * | 2013-10-18 | 2014-03-26 | 中国石油化工股份有限公司 | Device for online cleaning and calibrating oil well water seepage and viscosity reduction water meter |
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| US7949495B2 (en) * | 1996-03-28 | 2011-05-24 | Rosemount, Inc. | Process variable transmitter with diagnostics |
| EP2369270B1 (en) * | 2010-03-10 | 2020-02-05 | LG Electronics Inc. | Air conditioning system and method for calculating amount of filling refrigerants of the same |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126262A1 (en) * | 1983-04-18 | 1984-11-28 | Lang Apparatebau Gmbh | Device for the operation and monitoring of a dosage apparatus |
| CN2548130Y (en) * | 2002-06-21 | 2003-04-30 | 朱家顺 | Liquid tube net |
| CN1920498A (en) * | 2006-09-11 | 2007-02-28 | 朱天寿 | Online fluid flow detection device for natural gas flowmeter |
| CN201229202Y (en) * | 2008-06-03 | 2009-04-29 | 天津天仪集团仪表有限公司 | Engineering demarcating device of liquid flowmeter measured by normal volume method |
| CN202075022U (en) * | 2011-04-22 | 2011-12-14 | 中国石油天然气股份有限公司 | On-line real-flow verification device for small natural gas flow meter |
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Effective date of registration: 20170711 Address after: 710119, room 110, building 66, West Avenue, new industrial park, hi tech Zone, Shaanxi, Xi'an Applicant after: XI'AN LANGWEI TECHNOLOGY CO., LTD. Applicant after: Wu Weifeng Applicant after: Li Xiaohua Address before: 710119, room 110, building 66, West Avenue, new industrial park, hi tech Zone, Shaanxi, Xi'an Applicant before: XI'AN LANGWEI TECHNOLOGY CO., LTD. |
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