CN1289916A - Ultrasonic cross-correlation method for measuring flow of crude oil underground - Google Patents
Ultrasonic cross-correlation method for measuring flow of crude oil underground Download PDFInfo
- Publication number
- CN1289916A CN1289916A CN 99115867 CN99115867A CN1289916A CN 1289916 A CN1289916 A CN 1289916A CN 99115867 CN99115867 CN 99115867 CN 99115867 A CN99115867 A CN 99115867A CN 1289916 A CN1289916 A CN 1289916A
- Authority
- CN
- China
- Prior art keywords
- crude oil
- correlation method
- ultrasonic
- ultrasound wave
- flow
- 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
An ultrasonic cross-correlation method for measuring the flow of underground crude oil correctly and reliably features use of ultrasonic emitting sensor, ultraosonic receiving sensor, signal amplifier, polar comparator, DSP, storage, microprocessor, digital frequency synthesizer and power amplifier. Its steps include polarity comparsion, digital signal processing, calculating the polar correlation function, finding out the time correspondent to peak, and calculating speed and flow.
Description
The present invention relates to the oil flow fields of measurement, provide a kind of can be accurately, the method for measuring well flow of crude oil underground reliably.
This parameter of downhole flow is quite important concerning oil exploitation, and for the flow situation of understanding down-hole crude oil, and the active situation of crude oil all has important meaning under the output of every day and the monitor well.But, because downhole temperature is about 90 ℃, and the oil composition complexity, except oil, also comprise multiple materials such as water, gas, sand, paraffin; Simultaneously, but the space of sensor installation is little, environment is abominable, and therefore, traditional flow measurement devices such as existing turbo flow meter, electromagnetic flowmeter, differential pressure flowmeter can not be obtained effect preferably in this field.The present invention can detect the size of down-hole oil flow in real time, and then for the foundation that provides such as reasonably combined of the energy is provided.
Task of the present invention is the measuring well flow of crude oil underground.
Task of the present invention is finished as follows: the correlation theory of using signal, adopt two groups of ultrasonic sensors as sensitive element, one group of emission ultrasound wave, one group of received ultrasound wave, when propagating, the ultrasonic waves transmitted signal can be subjected to the modulation of crude oil flow velocity noise signal in fluid, comprise the ultrasonic signal behind fluid velocity information modulated, receive by ultrasonic receiver, be input to processing unit again and calculate the cross correlation function of two paths of signals, find out the pairing time of its peak point, be the time of fluid, and then calculate flow velocity by known distance, flow.
Below with reference to accompanying drawing the present invention is described in further detail.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a principle schematic of the present invention.
With reference to accompanying drawing 1, ultrasonic transmitter 1 and ultrasonic receiver 2 all are fixed on inner tube 3 Outer wall because the volume of ultrasonic transmitter 1 and receiver 2 is little, they are situated between after installing Between inner tube 3 and outer tube 4. Microprocessor 10 produces control signal, and numerical frequency is closed 11 the frequency of growing up to be a useful person is adjusted, and makes the intrinsic frequency of its output frequency and ultrasonic transmitter 1 Rate equates; Amplify respectively through 12 pairs of two paths of signals of power amplifier again, be used for driving Ultrasonic transmitter 1; Be subjected to the letter of the ultrasonic receiver 2 after the flow velocity modulation of crude oil 5 Number, be amplified to the amplitude of regulation by amplifier 6, enter polarity comparator 7, and output + 1 and-1 two logical value, again by digital signal processor (DSP) 8, to two-way Signal carries out the polarity computing cross-correlation, calculates two parameters of flow velocity and flow, and two parameters are real The time deposit memory 9 in. With reference to Fig. 2, the fluctuation signal 13 of crude oil flow velocity is the ultrasonic receiver of L by spacing 2, two paths of signals is respectively 14 and 15, this two paths of signals is carried out the polarity computing cross-correlation get To polarity cross-correlation function curve 16, the corresponding time value of this curve peak is crude oil 5 flow through the time of known distance L, and then obtain flow velocity; The internal diameter of inner tube 3 is known, Flow velocity multiply by the cross-sectional area of inner tube diameter, obtains flow.
The present invention has following advantage:
1, noncontact. Irrelevant with the medium composition of fluid, because therefore noncontact can not produce Give birth to the pressure loss, can well solve explosion-proof, anti-blocking etc.
2, measurement result and duty parameter are irrelevant, can be not right such as physical parameters such as pressure, temperature Measurement result exerts an influence.
3, measurement result is independent of hyperacoustic velocity of propagation.
4, flow measurement result only depends on the speed of pipeline internal medium axial direction, and to radially velocity component is insensitive.
5, volume is little, can be installed in the sleeve pipe of down-hole oil tube.
The best way that realizes this patent is: the resonance frequency of ultrasonic emitting sensor is 1MHz, and diameter is 14mm, thickness 1.5mm; The resonance frequency of ultrasound wave receiving sensor is 1MHz, and diameter is 14mm, thickness 1.5mm; The digital signal processing unit algorithm adopts the polarity cross-correlation method that the two-way ultrasonic signal is calculated; Ultrasonic transmitter and receiver are installed on the oil recovery outer wall of inner tube, do not contact with crude oil; Digital signal processing unit adopts dsp chip, and signal is handled, and guarantees real-time; Adopt digital frequency synthesizer to produce the drive signal of ultrasonic transmitter.
Claims (7)
1, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground is characterized in that: the correlation theory with signal, adopt two groups of ultrasonic sensors (1) (2) as sensitive element; Applied Digital frequency synthesizer (11) produces the drive signal of ultrasonic transmitter (1); When propagating, the ultrasonic waves transmitted signal can be subjected to the modulation of hydrodynamic noise in crude oil (5), the modulated signals that comprises fluid velocity information, receive by ultrasonic receiver (2), calculate the cross correlation function of two-way received signal again by digital signal processing unit (8), find out the pairing time of its peak point, be the time of fluid, and then calculate flow velocity, flow by known distance.
2, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground according to claim 1 is characterized in that: the resonance frequency of ultrasonic emitting sensor (1) is 1MHz, and diameter is 14mm, thickness 1.5mm.
3, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground according to claim 1 is characterized in that: the resonance frequency of ultrasound wave receiving sensor (2) is 1MHz, and diameter is 14mm, thickness 1.5mm.
4, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground according to claim 1 is characterized in that: digital signal processing unit (8) algorithm adopts the polarity cross-correlation method that the two-way ultrasonic signal is calculated.
5, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground according to claim 1 is characterized in that: ultrasonic transmitter (1) and receiver (2) are installed on the oil recovery outer wall of inner tube, do not contact with crude oil.
6, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground according to claim 1 is characterized in that: digital signal processing unit (8) adopts dsp chip, and signal is handled, and guarantees real-time.
7, the ultrasound wave cross-correlation method of measuring well flow of crude oil underground according to claim 1 is characterized in that: adopt digital frequency synthesizer (11) to produce the drive signal of ultrasonic transmitter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115867 CN1289916A (en) | 1999-09-29 | 1999-09-29 | Ultrasonic cross-correlation method for measuring flow of crude oil underground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115867 CN1289916A (en) | 1999-09-29 | 1999-09-29 | Ultrasonic cross-correlation method for measuring flow of crude oil underground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1289916A true CN1289916A (en) | 2001-04-04 |
Family
ID=5278761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99115867 Pending CN1289916A (en) | 1999-09-29 | 1999-09-29 | Ultrasonic cross-correlation method for measuring flow of crude oil underground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1289916A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332223C (en) * | 2002-12-11 | 2007-08-15 | 中国科学院自动化研究所 | DSP-based multiple ultrasonic sensor data acquisition system |
| CN100570284C (en) * | 2007-11-29 | 2009-12-16 | 浙江大学 | Concrete pump real time flow measurement method and system |
| CN102116652A (en) * | 2011-02-18 | 2011-07-06 | 福建恒劲科博测控技术有限公司 | Microwave flow meter |
| CN103792384A (en) * | 2014-01-21 | 2014-05-14 | 燕山大学 | Fluid flow velocity measurement method with adjustable measuring range ratio based on ultrasonic cross-correlation technology |
| CN103822676A (en) * | 2014-03-07 | 2014-05-28 | 中国计量学院 | Gas-liquid two-phase flow measuring device adopting double-cone flow rate meter and assistant relevant ultrasonic flow rate meter |
| CN104296814A (en) * | 2014-11-10 | 2015-01-21 | 厦门大学 | Flow measuring device for sewage containing solid garbage |
| CN104847345A (en) * | 2015-04-20 | 2015-08-19 | 中国海洋石油总公司 | Ultrasonic sensor |
| CN106979762A (en) * | 2017-03-15 | 2017-07-25 | 中国海洋石油总公司 | 360 ° of radial/axial is along journey wax deposition measurement imaging device and method |
| CN107024250A (en) * | 2017-04-26 | 2017-08-08 | 成都声立德克技术有限公司 | The system and method for gas flow measurement |
| CN110168319A (en) * | 2019-03-20 | 2019-08-23 | 深圳市汇顶科技股份有限公司 | Flight time generation circuit and related chip, flowmeter and method |
| CN114221714A (en) * | 2021-12-30 | 2022-03-22 | 宜昌测试技术研究所 | High-reliability low-power-consumption underwater sound equipment value updating method |
-
1999
- 1999-09-29 CN CN 99115867 patent/CN1289916A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332223C (en) * | 2002-12-11 | 2007-08-15 | 中国科学院自动化研究所 | DSP-based multiple ultrasonic sensor data acquisition system |
| CN100570284C (en) * | 2007-11-29 | 2009-12-16 | 浙江大学 | Concrete pump real time flow measurement method and system |
| CN102116652A (en) * | 2011-02-18 | 2011-07-06 | 福建恒劲科博测控技术有限公司 | Microwave flow meter |
| CN103792384B (en) * | 2014-01-21 | 2016-06-29 | 燕山大学 | The adjustable rate of flow of fluid measuring method of range ratio based on ultrasound wave cross-correlation technique |
| CN103792384A (en) * | 2014-01-21 | 2014-05-14 | 燕山大学 | Fluid flow velocity measurement method with adjustable measuring range ratio based on ultrasonic cross-correlation technology |
| CN103822676A (en) * | 2014-03-07 | 2014-05-28 | 中国计量学院 | Gas-liquid two-phase flow measuring device adopting double-cone flow rate meter and assistant relevant ultrasonic flow rate meter |
| CN104296814A (en) * | 2014-11-10 | 2015-01-21 | 厦门大学 | Flow measuring device for sewage containing solid garbage |
| CN104847345A (en) * | 2015-04-20 | 2015-08-19 | 中国海洋石油总公司 | Ultrasonic sensor |
| CN106979762A (en) * | 2017-03-15 | 2017-07-25 | 中国海洋石油总公司 | 360 ° of radial/axial is along journey wax deposition measurement imaging device and method |
| CN107024250A (en) * | 2017-04-26 | 2017-08-08 | 成都声立德克技术有限公司 | The system and method for gas flow measurement |
| CN110168319A (en) * | 2019-03-20 | 2019-08-23 | 深圳市汇顶科技股份有限公司 | Flight time generation circuit and related chip, flowmeter and method |
| CN114221714A (en) * | 2021-12-30 | 2022-03-22 | 宜昌测试技术研究所 | High-reliability low-power-consumption underwater sound equipment value updating method |
| CN114221714B (en) * | 2021-12-30 | 2023-11-07 | 宜昌测试技术研究所 | High-reliability low-power-consumption underwater sound equipment value more system control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7810378B2 (en) | Monitoring of leakage in wastewater force mains and other pipes carrying fluid under pressure | |
| CN101464171B (en) | Ultrasonic flux detection method | |
| CN109780447B (en) | Method for detecting blockage condition in pressure pipeline by using pulse pressure wave | |
| CN110469782B (en) | Pipeline leakage positioning device based on self-adaptive filter | |
| CN1289916A (en) | Ultrasonic cross-correlation method for measuring flow of crude oil underground | |
| CN104747912A (en) | Fluid conveying pipe leakage acoustic emission time-frequency positioning method | |
| RU2013157815A (en) | GAS FLOW DETECTION IN A WELL | |
| CN106813108A (en) | A kind of leakage locating method based on speed difference | |
| CN105486363A (en) | Ultrasonic gas flowmeter and measuring method | |
| CN115793035B (en) | Underground nonmetallic pipeline detection system and method based on active excitation of sound waves | |
| CN100570284C (en) | Concrete pump real time flow measurement method and system | |
| CN1804557A (en) | Signal processing method of propagation speed differential type ultrasonic flowmeter | |
| CN106289121A (en) | A kind of computational methods of reducer pipe equivalence pipe range | |
| CN111122068A (en) | Water pipeline leakage position positioning method based on optical fiber hydrophone | |
| CN100383510C (en) | Detection of oil and gas pipeline leakage by additional dynamic micro-pressure signal | |
| CN103806902A (en) | Ultrasonic data transmission method | |
| CN201255644Y (en) | Synchronous transceiving time difference type supersonic flowmeter | |
| CN107389787A (en) | A kind of gas incursion check signal processing method based on frequency domain | |
| CN112596100B (en) | Pipeline position detection method based on acoustic wave detection | |
| CN203069223U (en) | Synchronous phase code time difference detection device for ultrasonic flowmeter | |
| CN104007287A (en) | Pipeline fluid flow speed detection method based on ultrasonic waves | |
| CN107389786B (en) | A kind of gas incursion check signal processing method based on time domain | |
| CN207036192U (en) | Gas liquid two purpose ultrasonic flowmeter | |
| CN106678553A (en) | Calculating method of propagation speed of leakage dynamic pressure waves in in-pipe gas | |
| CN102080976B (en) | Wide-range gas flow detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |