CN103674188A - On-line flow calibration method for oilfield flooding system - Google Patents
On-line flow calibration method for oilfield flooding system Download PDFInfo
- Publication number
- CN103674188A CN103674188A CN201210324834.9A CN201210324834A CN103674188A CN 103674188 A CN103674188 A CN 103674188A CN 201210324834 A CN201210324834 A CN 201210324834A CN 103674188 A CN103674188 A CN 103674188A
- Authority
- CN
- China
- Prior art keywords
- flow
- straight length
- ultrasonic
- instrument
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention belongs to the field of petroleum and discloses an on-line flow calibration method for an oilfield flooding system. In the water flooding process, the thickness of a pipe wall of the straight pipe section is measured, an on-line test is conducted on the transit flow of the straight pipe section through an ultrasonic flow speed tester, and on-line calibration is conducted on the flow meter in the flooding process. The on-line flow calibration method for the oilfield flooding system solves the problem that the calibration period is long due to the fact that a conventional flow meter needs to be disassembled when being disassembled. Meanwhile, labor strength of calibration is effectively reduced.
Description
Technical field
The present invention relates to oil field, particularly a kind of online flow calibration method of oil field flood pattern.
Background technology
Oil field flood pattern adopts injection flow measuring apparatus metered flow conventionally.And the accuracy of continuous data is the basis of reservoir management, so the injection flow measuring apparatus of installing in oil field flood pattern generally all needs regularly to demarcate verification, to guarantee metering accuracy.
At present, conventional demarcation verification is carried out outside production line, specifically injection flow measuring apparatus to be verified is disassembled, and send on special verification caliberating device and carries out verification.In above-mentioned conventional demarcation checking procedure, there is following problem:
1, the injection flow measuring apparatus of using due to scene is installed and is demarcated cycle request, regularly need to disassemble, and send on special verification caliberating device and carries out verification, now needs to install backing sheet, to guarantee the injection flow metering in checking procedure; After injection flow measuring apparatus to be verified is demarcated, then backing sheet is disassembled, install the injection flow measuring apparatus that verification is demarcated, so cause process more complicated, manipulation strength is larger.
2,, owing to being subject to the restriction of special-purpose verification caliberating device capacity rating, in real work, be difficult to guarantee that the on-the-spot all injection flow measuring apparatus of water filling can both carry out verification demarcation on request.
As can be seen here, above problem, affects the in-depth of oil field fine-grained management, so need to carry out the technical research of injection flow measuring apparatus on-line calibration, aim of the present invention that Here it is in the existing production management condition of basic unit.
Summary of the invention
In order to solve the injection flow measuring apparatus in prior art oil field flood pattern, cannot realize the problem of on-line proving, the embodiment of the present invention provides a kind of oil field flood pattern online flow calibration method.Described technical scheme is as follows:
The online flow calibration method of oil field flood pattern, described method operates in accordance with the following steps,
Step 1, keeps straight length surface clean inclusion-free,
Specifically with sand paper by described straight length surface wiped clean;
Step 2, removes straight length wall thickness and diameter after impurity in testing procedure 1,
Specifically by the ultrasonic sensing wiped clean domain test straight length wall thickness in step 1 of popping one's head in, and test straight length external diameter by vernier caliper, utilize external diameter and wall thickness gauge to calculate testing tube internal diameter;
Step 3, the connection of ultrasonic instrument,
Specifically two probes of described ultrasonic instrument are coated after couplant, be fixed on the straight length surface of wiped clean, described two probes are connected on described ultrasonic investigation instrument;
Step 4, by the flow velocity of straight length described in ultrasonic measuring,
Supersonic wave test instrument in concrete opening steps 3, responds to the distance between described two probes automatically by described supersonic wave test instrument, by measuring the signal transmission time of diverse location, calculates mean flow rate;
Step 5, calculated flow rate,
The caliber specifically calculating by meter and mean flow rate, measure under a certain transient conditions flow Q,
By formula calculated flow rate Q=π (D-2H)
2* V/4*10
6, wherein,
Q is flow in pipeline, the m of unit
3/ h;
D is caliber external diameter, the mm of unit;
H is testing tube wall thickness, the mm of unit;
V is mean flow rate, the m of unit
3/ h;
The contrast of step 6 flow,
The flow Q specifically calculating by meter and the injection flow measuring apparatus on waterflood-transmission line show data Q
showcontrast, by formula L=(Q-Q
show)/Q
showthe error of calculation, and whether decision errors within specialized range 10%, error, within specialized range, is thought the injection flow measuring apparatus of being demarcated by the verification use of can remaining valid; Otherwise, just injection flow measuring apparatus need to be disassembled and keeps in repair or change.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
Compared to existing technology, the online flow calibration method of a kind of oil field flood pattern of the present invention, by at water filling flow testing straight length pipe thickness and straight length diameter, with ultrasonic flow-velocity tester on-line testing straight length instantaneous delivery, the flow-meter in water filling flow process is carried out to on-line proving.The method has solved conventional flowmeter timing signal in prior art needs dismounting, and the drawback that the check cycle is longer effectively reduces staking-out work intensity simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the ultrasonic signal bang path figure that the embodiment of the present invention provides supersonic wave test instrument;
Fig. 2 is the fluid-velocity survey schematic diagram calculation that the embodiment of the present invention provides supersonic wave test instrument.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
The online flow calibration method of oil field flood pattern, described method operates in accordance with the following steps,
Step 1, keeps straight length surface clean inclusion-free, specifically with sand paper by described straight length surface wiped clean;
Owing to affecting the key factor of transit-time ultrasonic flow amount measuring accuracy, have two: sectional area error in flow velocity error and pipeline.The test error of flow velocity depends on conduction of velocity and the pipe material of ultrasound wave in measured medium, and these conditions are definite values for a certain test point, and flow velocity test error is minimum.Thereby the precision of ultrasonic flow meter is mainly subject to the control of this parameter of sectional area (wall thickness) in pipeline.Because on-the-spot water filling flow process straight length is brushed with paint, speckles with impurity, in order to test accurately, need to be with sand paper by straight length surface wiped clean.
Step 2, in testing procedure 1, remove straight length wall thickness and diameter after impurity, specifically by the ultrasonic sensing wiped clean domain test straight length wall thickness in step 1 of popping one's head in, and test straight length external diameter by vernier caliper, utilize external diameter and wall thickness gauge to calculate testing tube internal diameter.
Step 3, the connection of ultrasonic instrument, specifically coats two probes of described ultrasonic instrument after couplant, is fixed on the straight length surface of wiped clean, and described two probes are connected on described ultrasonic investigation instrument.
Step 4, by the flow velocity of straight length described in ultrasonic measuring, the supersonic wave test instrument in concrete opening steps 3, responds to the distance between described two probes automatically by described supersonic wave test instrument, by measuring the signal transmission time of diverse location, calculate mean flow rate.
As shown in Figure 1, because signal is at mobile Propagation, the transmission time of the propagation of acoustical signal on suitable flow direction is by the transmission time being shorter than on contrary flow direction.As shown in Figure 2, by measuring transmission time difference △ T, can determine the mean flow rate on ultrasonic signal travel path.
Step 5, calculated flow rate, the caliber specifically calculating by meter and mean flow rate, measure under a certain transient conditions flow Q, by formula calculated flow rate Q=π (D-2H)
2* V/4*10
6, wherein,
Q is flow in pipeline, the m of unit
3/ h;
D is straight length external diameter, the mm of unit,
H is testing tube wall thickness, the mm of unit
V is mean flow rate, the m of unit
3/ h;
The contrast of step 6 flow, the flow Q specifically calculating by meter and the injection flow measuring apparatus on waterflood-transmission line show data Q
showcontrast, by formula L=(Q-Q
show)/Q
showthe error of calculation, and whether decision errors within specialized range (error is conventionally≤± 10%), error, within specialized range, is thought the injection flow measuring apparatus of being demarcated by the verification use of can remaining valid; Otherwise, just injection flow measuring apparatus need to be disassembled and keeps in repair or change.
The method of the invention is that a kind of ultrasonic flow-velocity measuring technology of utilizing is carried out the method for on-line calibration to flowmeter, its principle is, because ultrasonic signal is at mobile Propagation, the transmission time of the propagation of acoustical signal on suitable flow direction is by the transmission time being shorter than on contrary flow direction, by measuring transmission time difference △ T, can determine the mean flow rate on ultrasonic signal travel path.According to the xsect of pipeline, obtained mean flow rate is carried out to contour revising, just can obtain the data that are directly proportional to volume flow rate in pipeline.
The online flow calibration method of a kind of oil field flood pattern of the present invention, by at water filling flow testing straight length pipe thickness and straight length diameter, with ultrasonic flow-velocity tester on-line testing straight length instantaneous delivery, the flow-meter in water filling flow process is carried out to on-line proving.The method has solved conventional flowmeter timing signal in prior art needs dismounting, and the drawback that the check cycle is longer effectively reduces staking-out work intensity simultaneously.
Embodiment mono-:
Long celebrating oil field waterflood system is utilized the online flow calibration of the method for the invention to cross water meter with just verification to carry out checking data contrast.
1, method of testing, adopts the method for the invention.
(1) with sand paper by current stabilization water injection allocator straight length surface wiped clean;
(2) with the wall thickness of inductive probe test straight length, with vernier caliper, test straight length diameter;
(3) two probes of ultrasonic instrument are coated after special-purpose couplant, be fixed on the straight length surface of wiped clean; Probe is connected on ultrasonic investigation instrument;
(4) open supersonic wave test instrument, by instrument, automatically respond to the distance between two probes, and be generated in instrument, by the calculating of instrument, draw the flow of current in straight length.
2, test result
Selected 3 mouthfuls of water meters of just demarcating verification to carry out rating test.In flow stabilizing valve group, choose straight length and carry out ultrasonic flow test.
The test result of 3 mouthfuls of wells of contrast, average discharge differs 0.004～0.016m
3/ h(0.096～0.384m
3/ d), average relative error is 2.2～2.5%.
Utilize the method for the invention on-line proving and the firm water meter of demarcating to carry out shown in check results contrast table 1.
The on-line proving of table 1 ultrasound wave is carried out check results contrast with the firm water meter of demarcating
Embodiment bis-:
Long celebrating oil field waterflood system utilizes the online flow calibration of the method for the invention and standard scale to carry out contrast test.
The on-the-spot wherein flow process of selecting is carried out contrast test, and caliber external diameter is 34mm, wall thickness 4.4mm, with scene identical with pressure self-controlled instrument Φ 25 calibers.By adjust flux size, carry out device normalization and ultrasound wave simultaneously and demarcate.Caliberating device pressure is 0.15Mpa.
The indoor Contrast on effect test of having carried out 20 groups of different flows, ultrasound test result and instrument verification chamber standard water meter differ as-0.05～0.08m3/h(-1.2～1.92m3/d), average relative error is-2.2～1.8%.
The on-line proving of table 2 ultrasound wave and standard law are demarcated check results contrast
| Show data (m 3/h) | 3.02 | 2.41 | 2.29 | 1.82 | 1.26 | 0.70 | 0.44 | 0.25 | 4.42 | 3.02 |
| Test data (m 3/h) | 2.99 | 2.38 | 2.26 | 1.78 | 1.24 | 0.70 | 0.44 | 0.25 | 4.50 | 2.96 |
| Differ (m 3/h) | -0.03 | -0.03 | -0.03 | -0.04 | -0.02 | 0.00 | 0.00 | 0.00 | 0.08 | -0.06 |
| Error (%) | -0.99 | -1.24 | -1.31 | -2.20 | -1.59 | 0.00 | 0.00 | 0.00 | 1.81 | -1.99 |
| Show data (m 3/h) | 1.86 | 0.80 | 0.41 | 2.41 | 2.39 | 2.33 | 1.82 | 1.77 | 1.74 | 1.64 |
| Test data (m 3/h) | 1.84 | 0.79 | 0.41 | 2.36 | 2.34 | 2.28 | 1.80 | 1.75 | 1.72 | 1.63 |
| Differ (m 3/h) | -0.02 | -0.01 | 0.00 | -0.05 | -0.05 | -0.05 | -0.02 | -0.02 | -0.02 | -0.01 |
| Error (%) | -1.08 | -1.25 | 0.00 | -2.07 | -2.09 | -2.15 | -1.10 | -1.13 | -1.15 | -0.61 |
Test check results by above-described embodiment one and embodiment bis-shows, the online flow calibration method of oil field flood pattern of the present invention accurately feasible.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. the online flow calibration method of oil field flood pattern, is characterized in that, described method operates in accordance with the following steps,
Step 1, keeps straight length surface clean inclusion-free,
Specifically with sand paper by described straight length surface wiped clean;
Step 2, removes straight length wall thickness and diameter after impurity in testing procedure 1,
Specifically by the ultrasonic sensing wiped clean domain test straight length wall thickness in step 1 of popping one's head in, and test straight length external diameter by vernier caliper, utilize external diameter and wall thickness gauge to calculate testing tube internal diameter;
Step 3, the connection of ultrasonic instrument,
Specifically two probes of described ultrasonic instrument are coated after couplant, be fixed on the straight length surface of wiped clean, described two probes are connected on described ultrasonic investigation instrument;
Step 4, by the flow velocity of straight length described in ultrasonic measuring,
Supersonic wave test instrument in concrete opening steps 3, responds to the distance between described two probes automatically by described supersonic wave test instrument, by measuring the signal transmission time of diverse location, calculates mean flow rate;
Step 5, calculated flow rate,
The caliber specifically calculating by meter and mean flow rate, measure under a certain transient conditions flow Q,
By formula calculated flow rate Q=π (D-2H)
2* V/4*10
6, wherein,
Q is flow in pipeline, the m of unit
3/ h;
D is caliber external diameter, the mm of unit,
H is wall thickness, the mm of unit;
V is mean flow rate, the m of unit
3/ h;
The contrast of step 6 flow,
The flow Q specifically calculating by meter and the injection flow measuring apparatus on waterflood-transmission line show data Q
showcontrast, by formula L=(Q-Q
show)/Q
showthe error of calculation, and whether decision errors within specialized range, error, within specialized range, is thought the injection flow measuring apparatus of being demarcated by the verification use of can remaining valid; Otherwise, just injection flow measuring apparatus need to be disassembled and keeps in repair or change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210324834.9A CN103674188A (en) | 2012-09-04 | 2012-09-04 | On-line flow calibration method for oilfield flooding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210324834.9A CN103674188A (en) | 2012-09-04 | 2012-09-04 | On-line flow calibration method for oilfield flooding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103674188A true CN103674188A (en) | 2014-03-26 |
Family
ID=50312440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210324834.9A Pending CN103674188A (en) | 2012-09-04 | 2012-09-04 | On-line flow calibration method for oilfield flooding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103674188A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871982A (en) * | 2017-02-22 | 2017-06-20 | 中国大唐集团科学技术研究院有限公司华中分公司 | The fuzzy parameter measuring method of fluid flow in a kind of measurement generator stator bar |
| CN109211341A (en) * | 2018-10-23 | 2019-01-15 | 荆州市明德科技有限公司 | Can on-line automatic calibration injection flow self-con-tained unit and scaling method |
| CN116818057A (en) * | 2023-08-18 | 2023-09-29 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Flowmeter on-site metering system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405535A (en) * | 2002-11-06 | 2003-03-26 | 徐长祥 | Rechecking method for on-line flow-meter |
| CN101561309A (en) * | 2009-05-31 | 2009-10-21 | 常州市计量测试技术研究所 | Online measurement device and measurement method thereof for pipeline flux instrument |
| CN201514262U (en) * | 2009-08-28 | 2010-06-23 | 荆州市明德科技有限公司 | On-line scaling and calibrating flowmeter |
| WO2012028772A1 (en) * | 2010-08-31 | 2012-03-08 | Oy Indmeas Ab | Method and apparatus for calibrating a flow meter |
-
2012
- 2012-09-04 CN CN201210324834.9A patent/CN103674188A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405535A (en) * | 2002-11-06 | 2003-03-26 | 徐长祥 | Rechecking method for on-line flow-meter |
| CN101561309A (en) * | 2009-05-31 | 2009-10-21 | 常州市计量测试技术研究所 | Online measurement device and measurement method thereof for pipeline flux instrument |
| CN201514262U (en) * | 2009-08-28 | 2010-06-23 | 荆州市明德科技有限公司 | On-line scaling and calibrating flowmeter |
| WO2012028772A1 (en) * | 2010-08-31 | 2012-03-08 | Oy Indmeas Ab | Method and apparatus for calibrating a flow meter |
Non-Patent Citations (1)
| Title |
|---|
| 李长武 等: "超声波流量计用于流体流量仪表在线校准方法研究", 《仪器仪表学报》, vol. 30, no. 6, 30 June 2009 (2009-06-30), pages 307 - 310 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871982A (en) * | 2017-02-22 | 2017-06-20 | 中国大唐集团科学技术研究院有限公司华中分公司 | The fuzzy parameter measuring method of fluid flow in a kind of measurement generator stator bar |
| CN109211341A (en) * | 2018-10-23 | 2019-01-15 | 荆州市明德科技有限公司 | Can on-line automatic calibration injection flow self-con-tained unit and scaling method |
| CN116818057A (en) * | 2023-08-18 | 2023-09-29 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Flowmeter on-site metering system and method |
| CN116818057B (en) * | 2023-08-18 | 2023-11-17 | 江苏省计量科学研究院(江苏省能源计量数据中心) | Flowmeter on-site metering system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100538307C (en) | A kind of wind tunnel calibration method for large flow gas pipeline averaging velocity tube flowmeter | |
| CN103808381B (en) | A kind of temperature influence eliminating method of transit-time ultrasonic flow meter | |
| CN103940495B (en) | Low discharge ultrasonic flowmeter method for estimating error based on streamline | |
| CN102494742B (en) | Method for on-line calibration of large-caliber flow meter | |
| CN105157771A (en) | Time difference type supersonic wave flow measuring method and device | |
| CA2589198C (en) | System and method for flow profile calibration correction for ultrasonic flowmeters | |
| CN104251724A (en) | Fluid flow measuring apparatus | |
| WO2019000258A1 (en) | Gas turbine flowmeter detection device and detection method | |
| CN110410684A (en) | Non-intruding distributed optical fiber pipeline based on acoustic detection monitors system and method | |
| CN202483554U (en) | Oil well produced-fluid optical fiber measuring system | |
| CN100359292C (en) | Built-in conical throttling gear | |
| CN103674188A (en) | On-line flow calibration method for oilfield flooding system | |
| CN102207398B (en) | Ultrasonic flow measurement device and method for fuel terminal settlement | |
| CN105403266A (en) | Automatic correction large-caliber ultrasound water meter and correction method of same | |
| CN205246151U (en) | Automatic heavy -calibre supersound water gauge of rectifying | |
| CN204007804U (en) | Liquid flowmeter detects self-calibrating device online | |
| CN202158878U (en) | Ultrasonic flow measurement device for fuel terminal settlement | |
| CN207499826U (en) | One kind is with brill mud flow rate monitoring device | |
| CN107576361A (en) | A kind of heavy caliber pipeline flow measurement device based on LDV | |
| CN204177429U (en) | Fluid flow rate measurement apparatus | |
| CN203824576U (en) | Fluid measuring device | |
| CN105203189A (en) | Self-calibration method of fluid flowmeter online detection device | |
| CN204085644U (en) | A kind of flow calibrating device | |
| CN204115791U (en) | A kind of locating device for pipe laying ultrasonic flowmeter sensor | |
| CN206387455U (en) | A kind of inner lining structure of Ultrasonic water meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |
|
| RJ01 | Rejection of invention patent application after publication |