CN107299832A - A kind of method that use frequency difference formula infrasonic wave generator measures well fluid level - Google Patents
A kind of method that use frequency difference formula infrasonic wave generator measures well fluid level Download PDFInfo
- Publication number
- CN107299832A CN107299832A CN201710527347.5A CN201710527347A CN107299832A CN 107299832 A CN107299832 A CN 107299832A CN 201710527347 A CN201710527347 A CN 201710527347A CN 107299832 A CN107299832 A CN 107299832A
- Authority
- CN
- China
- Prior art keywords
- infrasound
- frequency difference
- control unit
- wave generator
- difference formula
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 title claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 230000008054 signal transmission Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000003786 synthesis reaction Methods 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000003129 oil well Substances 0.000 claims description 6
- 101000746134 Homo sapiens DNA endonuclease RBBP8 Proteins 0.000 claims description 3
- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 claims description 3
- 102100021133 Nuclear protein 1 Human genes 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000002463 transducing effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000004886 process control Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000002320 enamel (paints) Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Acoustics & Sound (AREA)
- Remote Sensing (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of method that use frequency difference formula infrasonic wave generator measures well fluid level, comprises the following steps：1) echo sounder is pre-installed in the inner side of every casing coupling and the outside of every tubing coupling respectively first；2) frequency difference formula infrasonic wave generator is installed on above well head, and be connected with control unit, control unit is connected with the microphone of well head and the host computer of distal end and oscillograph respectively again；3) signal is sent to control unit by host computer, the infrasonic sound wave direction underground of generation is launched, then, the back wave that echo sounder and hydrodynamic face are reflected back under well head microphone received well, then reflected wave conversion is shown for electric signal and on oscillograph；4) AD sampling A/D chips are given by electric signal transmission, calculates dynamic liquid level height by chip, and send result to host computer；This measuring method has the advantages that safe, operating cost and construction intensity is low, process control, measurement error are small, and can with the carrying out real-time continuous long-range unmanned monitoring to well fluid level.
Description
Technical field
The present invention relates to oil-gas field development technical field, and in particular to one kind frequency difference formula infrasonic wave generator measurement oil well
The method in hydrodynamic face.
Background technology
In oilfield process, hydrodynamic face represents height of the annulus liquid level apart from shaft bottom between the oil pipe of pumpingh well and sleeve pipe
Degree, the height commonly used to judge strata pressure is a key index for reflecting stratum fluid supply capacity, rationally heavy as determining
Do not spend, formulate the important evidence of reasonable working system.The mode in measurement hydrodynamic face has pressure sensor test, made empty promises at present
Bullet, pneumatic sound source test etc., test and are vented shell mode due to pressure sensor and there is complex operation, safety and reliability
Relatively poor the problems such as, pneumatic sound source was current using most wide metering system, using acoustic wave principles, is broadly divided into using less
Two kinds of sound wave type and infrasonic sound waves, sound wave type have that signal intensity exhaustion is serious, can not continuously measure, need many subjob ability
The problems such as obtaining accurate result；Although and infrasonic sound waves have signal intensity stabilization, are difficult decay, can carry out relatively long distance propagation
The characteristics of, but infrasonic wave generator is restricted its application due to there are various problems, such as applies most gas at present
Quick-fried formula infrasonic wave generator is, it is necessary to which special external air source is supplied, and gas explosion after compression produces infrasound, and which is produced
Infrasound it is uncontrollable, and discontinuously, measurement result is not accurate enough, and frequency difference formula infrasonic wave generator mainly utilizes the non-of sound wave
Linear frequency difference obtains low frequency infrasound, although have the advantages that cost is relatively low, frequency-adjustable, but due to can not be with existing oil well
Equipment is used cooperatively, never in well fluid level measurement.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide one kind frequency difference formula infrasonic wave generator measurement oil
The method in well hydrodynamic face, has the advantages that safe, operating cost and construction intensity are low, measurement error is small, continuous and stable.
In order to achieve the above object, the technical scheme taken of the present invention is：
A kind of method that use frequency difference formula infrasonic wave generator measures well fluid level, comprises the following steps：
(1) echo sounder is pre-installed
In oil well setting of casing and lower oil pipe operation, respectively in the outer of the inner side of every casing coupling and every tubing coupling
The infrasonic echo sounder of side prepackage reflection；
(2) frequency difference formula infrasonic wave generator is installed
Frequency difference formula infrasonic wave generator is installed on above well head, and is connected with control unit, control unit again respectively with
The microphone of well head and the host computer of distal end are connected with oscillograph；
(3) measurement operation
Signal is sent to control unit by host computer, and then produces infrasound and launches to underground, then, well head microphony
The infrasound back wave that echo sounder and hydrodynamic face are reflected back under device received well, then by infrasound reflected wave conversion be electric signal simultaneously
Shown on oscillograph；
(4) dynamic liquid level height and real-time Transmission are calculated
AD sampling A/D chips are given by electric signal transmission, handled by AD sampling A/D chips, calculate dynamic liquid level height, and will knot
Fruit sends host computer to.
Further, the frequency difference formula infrasonic wave generator is by ultrasonic transmission device and infrasound synthesizer two parts
Composition, two parts device is connected by transducer lower contact；The ultrasonic transmission device includes ultrasonic wave outer barrel, in ultrasound
One end of ripple outer barrel is provided with transducer top connection, and the transducer top connection is connected with ultrasonic transducer one end, transducing
Transmission line is embedded with inside device top connection, the other end of ultrasonic transducer passes through transducer lower contact；The infrasound synthesis
Device includes infrasound outer barrel, and infrasound outer barrel one end is external in transducer lower contact, and the inside of the other end is closed provided with infrasound
Grow up to be a useful person, the transducer lower contact, infrasound outer barrel and infrasound synthesizer three form cavity；The infrasound synthesizer bag
Include control unit and infrasound synthesis unit FPGA, address bus, data/address bus and the controlling bus of the configuration of control unit one end
Be connected with infrasound synthesis unit FPGA in parallel transmission mode, infrasound synthesis unit FPGA again with digital analog converter and low pass
Wave filter order is serial to be connected, and described control unit has been also respectively connected with input module, output module and COM1.
Further, nitrogen is filled with the cavity.
Further, install one layer additional on the outside of the microphone and resist non-infrasonic sound wave interference, the pottery of anti-instantaneous strong gas pressure impact
Enamel coating.
Further, described control unit is ARM controlling unit.
Relative to prior art, advance of the invention and have the beneficial effect that：
The present invention is due to having used frequency difference formula infrasonic wave generator to produce infrasound, so process control, and can be to oil well
With the carrying out real-time continuous long-range unmanned monitoring of hydrodynamic face；Exist without gases at high pressure, so with higher security, in addition, by
In signal intensity attenuation it is very small, coordinate without external equipment, thus operating cost and construction intensity are low；With the exception of this, originally
Invention echo sounder is arranged at every casing coupling and tubing coupling, compared to the clipping room of traditional 200-500 rice away from reflecting
Ripple position more determines, and echo sounder reflected signal with hydrodynamic face reflected signal frequency difference substantially, so measurement error compared with
It is small.
Brief description of the drawings
Fig. 1 is hydrodynamic planar survey method schematic diagram of the present invention；
Fig. 2 is hydrodynamic planar survey method flow diagram of the present invention；
Fig. 3 is frequency difference formula infrasonic wave generator structural representation；
Fig. 4 is the microphone structural representation after improving；
Fig. 5 is ARM and FPGA module connection diagram；
In figure：1st, oil pipe echo sounder, 2, sleeve pipe echo sounder, 3, oil pipe, 4, sleeve pipe, 5, infrasound back wave, 6, hydrodynamic face,
7th, transmission line, 8, transducer top connection, 9, ultrasonic wave outer barrel, 10, ultrasonic transducer, 11, transducer lower contact, 12, infrasonic sound
Ripple outer barrel, 13, infrasound synthesizer, 14, cavity, 15, microphone, 16, ceramic layer.
Embodiment
The operating method to the present invention is discussed in detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of method that use frequency difference formula infrasonic wave generator measures well fluid level, comprises the following steps：
(1) echo sounder is pre-installed
In oil well setting of casing and lower oil pipe operation, sleeve pipe echo sounder 2 is installed in the inner side of every casing coupling respectively, every
The outside prepackage oil pipe echo sounder 1 of root tubing coupling, echo sounder can accurately measure box cupling institute as the infrasonic reflector of well head
In position；
(2) frequency difference formula infrasonic wave generator is installed
Referring to Fig. 4, frequency difference formula infrasonic wave generator is installed on above well head, and is connected with control unit, control unit
It is connected respectively with the microphone of well head and the host computer of distal end and oscillograph again, has installed one layer of pottery on the outside of the microphone additional
Enamel coating, can play a part of anti-non-infrasonic sound wave interference, anti-instantaneous strong gas pressure impact；
(3) measurement operation
As shown in Fig. 2 sending signal to control unit ARM by host computer, and then produce infrasound and launch to underground,
Then, the infrasound back wave 5 that echo sounder and hydrodynamic face are reflected back under well head microphone received well, then by infrasound back wave
5 are converted to electric signal and are shown on oscillograph；
(4) dynamic liquid level height and real-time Transmission are calculated
AD sampling A/D chips are given by electric signal transmission, handled by AD sampling A/D chips, calculate dynamic liquid level height, and will knot
Fruit sends host computer to.
As shown in figure 3, the frequency difference formula infrasonic wave generator is by ultrasonic transmission device and infrasound synthesizer two
It is grouped into, two parts device is connected by transducer lower contact 11；The ultrasonic transmission device includes ultrasonic wave outer barrel 9,
One end inside ultrasonic wave outer barrel 9 is provided with transducer top connection 8, the transducer top connection 8 and ultrasonic transducer 10 1
Transmission line 7 is embedded with inside end connection, transducer top connection 8, the other end of ultrasonic transducer 10 passes through transducer lower contact
11；The infrasound synthesizer includes infrasound outer barrel 12, and the one end of infrasound outer barrel 12 is external in transducer lower contact 11, separately
The inside of one end is provided with infrasound synthesizer 13, the transducer lower contact 11, infrasound outer barrel 12 and infrasound synthesizer 13
The inside of cavity 14 that three is formed is filled with nitrogen, to weaken the side effect of ultrasonic cavitation generation, can more accurately control
Frequency processed；
As shown in figure 5, the infrasound synthesizer includes control unit ARM and infrasound synthesis unit FPGA, control is single
Address bus, the data/address bus of first end configuration are connected with controlling bus with infrasound synthesis unit FPGA in parallel transmission mode,
Infrasound synthesis unit FPGA is serially connected with digital analog converter and low pass filter order again, and described control unit also connects respectively
It is connected to input module, output module and COM1, described control unit ARM mainly provides the display function of data, and infrasonic sound
Ripple synthesis unit FPGA is mainly used to realize the high-speed sampling of data.
The contrast of the hydrodynamic face amount and current in-site measurement value of the measurement of the inventive method of table 1
Note：In table 1 "......" represent the intermediate data that does not show.
It was found from the data of table 1, for more than 3,000 meters of level, the measuring method at current scene only has 11 reflection letters
Number, and each box cupling of the present invention has reflected signal, final measurement result is that current method error of measuring is 9.8 meters, and
The measurement error of the present invention only has 0.8 meter, as a result shows, the present invention is relative to existing method, and measurement accuracy is greatly improved.
The present invention method of work and principle be：
In setting of casing and lower Tubing During Running, it is respectively mounted back in every casing coupling on the outside of survey and every tubing coupling
Sound device, wherein, the echo sounder reflection wave frequency on oil pipe is less than the echo sounder reflection wave frequency on sleeve pipe.Time launched when well head
Sound wave when running into echo sounder and the hydrodynamic face of oil casing collar, can all reflect the anti-of different frequency into underground communication process
After ejected wave, the incoming microphone of back wave, electric signal is converted in microphone, and is shown on oscillograph, electric signal is passed
AD sampling A/D chips are defeated by, shaft bottom liquid level position are calculated by chip, and send result to host computer.Because liquid is to secondary
Sound wave has suction-operated, causes infrasonic sound wave frequency rate substantially to reduce, and a low frequency signal can be produced, according to the appearance of low frequency signal
It may determine that infrasound reaches dynamic liquid level position, the reflected signal number on casing coupling and tubing coupling echo sounder calculated respectively
Amount, in conjunction with the length of every sleeve pipe or every oil pipe, depth where hydrodynamic face can be calculated respectively, when both differences are less than 3
Meter Shi, takes its average value as final result, and when difference is more than 3 meters, need to re-emit infrasound and test again.
Claims (5)
1. a kind of method that use frequency difference formula infrasonic wave generator measures well fluid level, it is characterised in that methods described include with
Lower step：
(1) echo sounder is pre-installed
It is pre- in the outside of the inner side of every casing coupling and every tubing coupling respectively in oil well setting of casing and lower oil pipe operation
It is anti-loaded to penetrate infrasonic echo sounder；
(2) frequency difference formula infrasonic wave generator is installed
Frequency difference formula infrasonic wave generator is installed on above well head, and is connected with control unit, control unit again respectively with well head
Microphone and the host computer of distal end be connected with oscillograph；
(3) measurement operation
Signal is sent to control unit by host computer, and then produces infrasound and launches to underground, then, well head microphone connects
The infrasound back wave that underground echo sounder and hydrodynamic face are reflected back is received, then by infrasound reflected wave conversion is electric signal and is showing
Shown on ripple device；
(4) dynamic liquid level height and real-time Transmission are calculated
AD sampling A/D chips are given by electric signal transmission, handled by AD sampling A/D chips, calculate dynamic liquid level height, and result is passed
Give host computer.
2. the method that a kind of use frequency difference formula infrasonic wave generator as claimed in claim 1 measures well fluid level, its feature exists
In the frequency difference formula infrasonic wave generator is made up of ultrasonic transmission device and infrasound synthesizer two parts, the two parts
Device is connected by transducer lower contact；The ultrasonic transmission device includes ultrasonic wave outer barrel, in ultrasonic wave outer barrel
One end is provided with transducer top connection, and the transducer top connection is connected with ultrasonic transducer one end, inside transducer top connection
Transmission line is embedded with, the other end of ultrasonic transducer passes through transducer lower contact；The infrasound synthesizer includes infrasonic sound
Ripple outer barrel, infrasound outer barrel one end is external in transducer lower contact, and the inside of the other end is provided with infrasound synthesizer, the transducing
Device lower contact, infrasound outer barrel and infrasound synthesizer three form cavity；The infrasound synthesizer include control unit and
Infrasound synthesis unit FPGA, address bus, data/address bus and the controlling bus of the configuration of control unit one end are synthesized with infrasound
Unit F PGA is connected in parallel transmission mode, and infrasound synthesis unit FPGA goes here and there with digital analog converter and low pass filter order again
Row is connected, and described control unit has been also respectively connected with input module, output module and COM1.
3. the method that a kind of use frequency difference formula infrasonic wave generator as claimed in claim 2 measures well fluid level, its feature exists
In filled with nitrogen in the cavity.
4. the method that a kind of use frequency difference formula infrasonic wave generator as claimed in claim 1 measures well fluid level, its feature exists
In the ceramic layer for install one layer of anti-non-infrasonic sound wave interference additional on the outside of the microphone, resisting instantaneous strong gas pressure to impact.
5. the method that a kind of use frequency difference formula infrasonic wave generator as claimed in claim 1 or 2 measures well fluid level, its feature
It is, described control unit is control unit ARM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527347.5A CN107299832B (en) | 2017-06-30 | 2017-06-30 | Method for measuring working fluid level of oil well by using frequency difference type infrasonic wave generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527347.5A CN107299832B (en) | 2017-06-30 | 2017-06-30 | Method for measuring working fluid level of oil well by using frequency difference type infrasonic wave generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107299832A true CN107299832A (en) | 2017-10-27 |
| CN107299832B CN107299832B (en) | 2021-04-13 |
Family
ID=60136187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710527347.5A Active CN107299832B (en) | 2017-06-30 | 2017-06-30 | Method for measuring working fluid level of oil well by using frequency difference type infrasonic wave generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107299832B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252708A (en) * | 2018-02-28 | 2018-07-06 | 西安石油大学 | A kind of well fluid level recognition methods |
| CN108416282A (en) * | 2018-02-28 | 2018-08-17 | 西安石油大学 | A kind of underground hydrodynamic face echo-signal velocity of sound extracting method based on tubing coupling |
| CN110656929A (en) * | 2018-06-29 | 2020-01-07 | 中国石油化工股份有限公司 | Device and method for monitoring liquid level depth of gas well in real time |
| CN111734393A (en) * | 2020-06-28 | 2020-10-02 | 中国石油天然气股份有限公司 | Oil well working fluid level testing device and operation method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285388A (en) * | 1990-07-16 | 1994-02-08 | James N. McCoy | Detection of fluid reflection for echo sounding operation |
| US5748471A (en) * | 1996-03-29 | 1998-05-05 | Otatco, Inc. | Well collar identification method |
| CN1229542A (en) * | 1996-07-17 | 1999-09-22 | 美国技术公司 | Acoustic heterodyne device and method |
| US6237410B1 (en) * | 1996-10-07 | 2001-05-29 | Circa Enterprises Inc. | Method for controlling the speed of a pump based on measurement of the fluid depth in a well |
| CN101551268A (en) * | 2009-05-11 | 2009-10-07 | 陕西博睿数字视频技术有限公司 | Piezoelectric type infrasonic sensor capable of offsetting mechanical vibration signals |
| CN102405898A (en) * | 2011-12-13 | 2012-04-11 | 郝建波 | Subsonic wave generator |
| CN103248980A (en) * | 2013-05-15 | 2013-08-14 | 中国人民解放军国防科学技术大学 | Method and device for generating low-frequency sound wave |
| US8902704B2 (en) * | 2010-03-22 | 2014-12-02 | Rohol-Aufsuchungs Ag | Method and device for logging the fluid depth in a wellbore |
| CN105537091A (en) * | 2015-11-23 | 2016-05-04 | 西北工业大学 | Infrasonic wave synthetic method and device based on heterodyne frequency type and parametric acoustic array technology |
| CN106761634A (en) * | 2017-01-25 | 2017-05-31 | 汪必启 | A kind of displacement of reservoir oil of environmental protection and energy saving convection current ultrasonic steam, ultrasound oil pumping dual-purpose apparatus |
| CN106837306A (en) * | 2017-04-14 | 2017-06-13 | 西安海联石化科技有限公司 | Integrated oil well performance liquid surface measuring device and method |
-
2017
- 2017-06-30 CN CN201710527347.5A patent/CN107299832B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285388A (en) * | 1990-07-16 | 1994-02-08 | James N. McCoy | Detection of fluid reflection for echo sounding operation |
| US5748471A (en) * | 1996-03-29 | 1998-05-05 | Otatco, Inc. | Well collar identification method |
| CN1229542A (en) * | 1996-07-17 | 1999-09-22 | 美国技术公司 | Acoustic heterodyne device and method |
| US6237410B1 (en) * | 1996-10-07 | 2001-05-29 | Circa Enterprises Inc. | Method for controlling the speed of a pump based on measurement of the fluid depth in a well |
| CN101551268A (en) * | 2009-05-11 | 2009-10-07 | 陕西博睿数字视频技术有限公司 | Piezoelectric type infrasonic sensor capable of offsetting mechanical vibration signals |
| US8902704B2 (en) * | 2010-03-22 | 2014-12-02 | Rohol-Aufsuchungs Ag | Method and device for logging the fluid depth in a wellbore |
| CN102405898A (en) * | 2011-12-13 | 2012-04-11 | 郝建波 | Subsonic wave generator |
| CN103248980A (en) * | 2013-05-15 | 2013-08-14 | 中国人民解放军国防科学技术大学 | Method and device for generating low-frequency sound wave |
| CN105537091A (en) * | 2015-11-23 | 2016-05-04 | 西北工业大学 | Infrasonic wave synthetic method and device based on heterodyne frequency type and parametric acoustic array technology |
| CN106761634A (en) * | 2017-01-25 | 2017-05-31 | 汪必启 | A kind of displacement of reservoir oil of environmental protection and energy saving convection current ultrasonic steam, ultrasound oil pumping dual-purpose apparatus |
| CN106837306A (en) * | 2017-04-14 | 2017-06-13 | 西安海联石化科技有限公司 | Integrated oil well performance liquid surface measuring device and method |
Non-Patent Citations (1)
| Title |
|---|
| 贾文超等: "基于FPGA的次声波合成的电路设计", 《现代电子技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252708A (en) * | 2018-02-28 | 2018-07-06 | 西安石油大学 | A kind of well fluid level recognition methods |
| CN108416282A (en) * | 2018-02-28 | 2018-08-17 | 西安石油大学 | A kind of underground hydrodynamic face echo-signal velocity of sound extracting method based on tubing coupling |
| CN108416282B (en) * | 2018-02-28 | 2021-06-04 | 西安石油大学 | Method for extracting acoustic velocity of echo signal of underground working fluid level based on tubing coupling |
| CN108252708B (en) * | 2018-02-28 | 2021-07-13 | 西安石油大学 | Method for identifying working fluid level of oil well |
| CN110656929A (en) * | 2018-06-29 | 2020-01-07 | 中国石油化工股份有限公司 | Device and method for monitoring liquid level depth of gas well in real time |
| CN111734393A (en) * | 2020-06-28 | 2020-10-02 | 中国石油天然气股份有限公司 | Oil well working fluid level testing device and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107299832B (en) | 2021-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107299832A (en) | A kind of method that use frequency difference formula infrasonic wave generator measures well fluid level | |
| MXPA06001468A (en) | Multimode acoustic imaging in cased wells. | |
| CN109870229B (en) | Wall Rock of Tunnel velocity of wave and relaxation zone thickness testing device and method | |
| CN106703789A (en) | Leakage well drilling fluid level and leakage pressure monitoring system and method | |
| CN104818735A (en) | Exploring drill bit and method for detecting pile foundation by using exploring drill bit | |
| WO2020143187A1 (en) | Far-field acoustic sensing and imaging and evaluation system for surveying offshore wind turbine tower foundation | |
| CN112085994A (en) | Acoustic suspension gas-liquid two-phase shock tube experimental device and experimental method | |
| CN108896745A (en) | A kind of concrete pumping supersonic guide-wave monitoring device and monitoring method | |
| CN110529087A (en) | A kind of method and device for evaluating stratum hydraulic fracturing effect | |
| CN204152507U (en) | A kind of sound wave well logging transducer | |
| CN107143324A (en) | A kind of frequency difference formula infrasonic wave generator for measuring well fluid level | |
| CN109187761A (en) | A kind of the coal and rock anelasticity anisotropy detection device and method of gas-solid thermal coupling | |
| SA518392024B1 (en) | Casing thickness estimation by frequency correlation | |
| CN106567713B (en) | For the construction method and system of shield driving forward probe in marine bed | |
| CN100383496C (en) | Ultrasonic method for flow measurement and device thereof | |
| CN110260949A (en) | A kind of intelligent ship ullage wireless supervisory control system and its method | |
| CN111380594B (en) | Acousto-optic synchronous type salt cavern gas storage liquid level measurement method and system | |
| CN209510308U (en) | A kind of liquid level integral test system | |
| CN212130539U (en) | Mine gas permeability increasing system | |
| CN108487901A (en) | Oil well multi-functional automatic liquid level monitor based on velocity of sound sensor | |
| CN101881157B (en) | Sound wave well logging transducer | |
| CN114017014B (en) | Acoustic logging wave acoustic method | |
| CN110425068A (en) | The ultrasonic measuring device and measurement method of single injection of fuel quality | |
| CN2814350Y (en) | Apparatus for measuring underground petroleum flow | |
| CN209446157U (en) | Wall Rock of Tunnel velocity of wave and relaxation zone thickness testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |