CN108487901A - Oil well multi-functional automatic liquid level monitor based on velocity of sound sensor - Google Patents
Oil well multi-functional automatic liquid level monitor based on velocity of sound sensor Download PDFInfo
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- CN108487901A CN108487901A CN201810498157.XA CN201810498157A CN108487901A CN 108487901 A CN108487901 A CN 108487901A CN 201810498157 A CN201810498157 A CN 201810498157A CN 108487901 A CN108487901 A CN 108487901A
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- 239000003129 oil well Substances 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 238000013022 venting Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000000644 propagated effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013587 production medium Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method 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
- E21B47/13—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 by electromagnetic energy, e.g. radio frequency
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- 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)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The present invention relates to oilfield test fields, and in particular to be a kind of oil well multi-functional automatic liquid level monitor based on velocity of sound sensor.The present invention includes：Velocity of sound sensor, control circuit, infrasonic wave generator, sound pick-up, A/D circuits, CPU, memory, DTU, pressure sensor, power-supply system, wellhead connector, shell；The velocity of sound sensor, infrasonic wave generator, sound pick-up, pressure sensor are connected to wellhead connector；Wellhead connector is connected with oil well casing；Microphone signal output is connect with A/D circuits；Control circuit, A/D circuits, memory, DTU and CPU connections.The present invention uses the speed that velocity of sound sensor measurement sound is propagated in oil well casing, more accurate than the existing method for measuring velocity of sound, therefore obtained well fluid level is more acurrate more reliable.The present invention is according to oil well casing pressure size, using internal, externally two-way deflation method as measuring sound source, can be used to cover kill-job and can be used for the automatic monitor for continuously without set well killing fluid face.
Description
Technical field
The invention belongs to oilfield test fields, and in particular to be that the oil well multi-functional liquid level based on velocity of sound sensor is automatic
Monitor.
Background technology
Well fluid level is the important indicator for reflecting oil field stratum fluid supply capacity, grasps hydrodynamic face situation in time, rationally adjusts
Whole oil well pump submergence makes oil pumping pump inlet pressure stablize in a reasonable range, is to improve oil well working efficiency, protect
Demonstrate,prove steady output of oilwell, energy-saving and emission-reduction important measures.
Major part oil well liquid level monitor all uses echo principle at present, i.e., sends an acoustic signals in well head, use instrument
Device detects the back wave in oil well.Sound production medium use is without bullet powder bullet, high-pressure nitrogen bottle compressed gas sound bullet etc., test
Method is manually periodically to be operated, and the equipment used also is difficult to long-time follow-on test than relatively hazardous, heavy.Also have
Using measurement methods such as other electric air guns, electronic nitrogen cylinders, but because of process structure complexity, cost is higher, service life
It is short, therefore promote relatively difficult.
Oil well liquid level is tested using echo method, level S is multiplied by velocity of sound V divided by 2, i.e. S=T*V/ equal to echo time T
2, therefore, whether the oil-well level that the accuracy for the speed V that sound is propagated in oil well casing determines is accurate；It is logical
In the case of often, velocity of sound V is determined by the echo or tubing coupling echo time of reflector.But it is big in real work
Most wells are all not provided with reflector, and with regeneration oil pipe to be widely used tubing length irregular, pass through oil pipe
Box cupling echo determines that velocity of sound is also not accurate enough, when especially box cupling echo is unintelligible, needs repeated measurement that can not even not obtain
Fluid value.
Invention content
The object of the present invention is to provide a kind of oil well multi-functional automatic liquid level monitors based on velocity of sound sensor, for solving
Echometer velocity of sound indeterminacy certainly used at present has a single function, is complicated for operation, the problem that cost is higher, precision is low.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of oil well multi-functional automatic liquid level monitor based on velocity of sound sensor, including：It is velocity of sound sensor, control circuit, secondary
Sonic generator, sound pick-up, A/D circuits, CPU, memory, DTU, pressure sensor, power-supply system, wellhead connector, shell；
The velocity of sound sensor, infrasonic wave generator, sound pick-up, pressure sensor are connected to wellhead connector；Wellhead connector with
Oil well casing is connected；Microphone signal output is connect with A/D circuits；Control circuit, A/D circuits, memory, DTU and CPU connect
It connects.
As the further scheme of the present invention, the velocity of sound sensor is ultrasonic wave speed measuring module, and the velocity of sound passes
Sensor is connected with wellhead connector, controls signal, output signal and CPU connect, for measure different oil well casing pressure,
The spread speed of sound in temperature, medium.
As the further scheme of the present invention, the sound pick-up is miniature piezo-ceramic sound pick-up, pickup face and well head
Connector is connected, and for voice signal to be converted to electric signal, output signal is connect with A/D circuit input ends.
As the further scheme of the present invention, the infrasonic wave generator includes electric inflation pump, air accumulator, externally puts
Pneumoelectric magnet valve, internal venting solenoid valve and high-pressure air pipe；Electric inflation pump connect by control circuit with CPU, gas outlet with
Air accumulator is connected to；External venting solenoid valve is connect by control circuit with CPU, and inlet end is connected to wellhead connector, outlet side
The outside of shell is connected to by tracheae；Internal venting solenoid valve is connect by control circuit with CPU, inlet end by tracheae and
Air accumulator connects, and outlet side is connected with wellhead connector.
As the further scheme of the present invention, the CPU is the SCM system with real-time clock.
As the further scheme of the present invention, the A/D circuits are the analog to digital conversion circuits of sampling precision 10 or more,
It can be that microcontroller is included, individual A/D chips or module can also be used in order to obtain higher precision.
As the further scheme of the present invention, the DTU is wireless data transmission module, is connected through serial communication interface and CPU
It connects, data remote and remote control is realized by the wireless data transmission module；The wireless data transmission module can be according to logical
Communication distance selects GPRS, 4G, LORA or WIFI module.
As the further scheme of the present invention, the pressure sensor is connected with wellhead connector, output signal and
A/D circuit input ends connect, for measuring oil well casing pressure.
As the further scheme of the present invention, the power-supply system can be that Alternating Current Power Supply, solar energy add chargeable electricity
Pond powers, and power supply is provided for whole device.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the speed that the present invention is propagated using velocity of sound sensor measurement sound in oil well casing, than the existing method for measuring velocity of sound
It is more accurate, therefore obtained well fluid level is more acurrate more reliable.
2, the present invention can both be used according to casing pressure size using internal, externally two-way deflation method as measuring sound source
In the liquid level test for having the liquid level test of casing pressure oil well to can be used for no casing pressure oil well, both can be used for rod-pumped well can also
It can be also used for the liquid level test of coal bed gas well for screw bolt well, electric pump well.
3, the present invention can be with continuous and automatic testing oil well liquid level.
4, the present invention can realize data remote and remote control by wireless network.
5, the present invention use miniature piezo-ceramic sound pick-up, it is more small than the sound pick-up that conventional echo instrument uses, high pressure resistant,
It is corrosion-resistant more economical reliable.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
In figure, 1, velocity of sound sensor 2, control circuit, 3, sound pick-up, 4, A/D circuits, 5, CPU, 6, memory, 7, DTU,
8, pressure sensor, 9, power-supply system, 10, wellhead connector, 11, shell, 20, infrasonic wave generator, 21, electric inflation pump,
22, air accumulator, 23, external venting solenoid valve, 24, internal venting solenoid valve, 30, oil well casing, 31, oil pipe, 32, oil pipe connects
Hoop, 33, liquid level.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the oil well multi-functional automatic liquid level monitor based on velocity of sound sensor, including：Velocity of sound sensor 1,
Control circuit 2, infrasonic wave generator 20, sound pick-up 3, A/D circuits 4, CPU 5, memory 6, DTU 7, pressure sensor 8, electricity
Source system 9, wellhead connector 10, shell 11；The velocity of sound sensor 1, infrasonic wave generator 20, sound pick-up 3, pressure sensing
Device 8 is connected to wellhead connector 10；Wellhead connector 9 is connected with oil well casing；3 signal of sound pick-up is exported to be connected with A/D circuits 3
It connects；Control circuit 2, A/D circuits 4, memory 6, DTU 7 are connect with CPU 5.
As shown in Figure 1, velocity of sound sensor 1 is ultrasonic wave speed measuring module, the velocity of sound sensor 1 and wellhead connector 10
It is connected, control signal, output signal and the connections of CPU 5, for measuring the sound in different oil well casing pressure, temperature, medium
The spread speed of sound.
As shown in Figure 1, sound pick-up 3 is miniature piezo-ceramic sound pick-up, pickup face is connected with wellhead connector 9, is used for
Voice signal is converted to electric signal, output signal is connect with 4 input terminal of A/D circuits.
As shown in Figure 1, infrasonic wave generator 20 include electric inflation pump 21, it is air accumulator 22, external venting solenoid valve 23, right
Interior venting solenoid valve 24 and high-pressure air pipe；Electric inflation pump 21 connect by control circuit 2 with CPU 5, gas outlet and gas storage
Tank 22 is connected to；External venting solenoid valve 23 is connect by control circuit with CPU 5, and inlet end is connected to wellhead connector 9, outlet
End is connected to the outside of shell 11 by tracheae；Internal venting solenoid valve 24 is connect by control circuit 2 with CPU 5, inlet end
It is connect with air accumulator 22 by tracheae, outlet side is connected with wellhead connector 9.
As shown in Figure 1, CPU 5 is the SCM system with real-time clock.
As shown in Figure 1, A/D circuits 4 are the analog to digital conversion circuits of sampling precision 10 or more, can be that microcontroller is included
, it can also use individual A/D chips or module to obtain higher precision.
As shown in Figure 1, DTU 7 is wireless data transmission module, through serial communication interface and the connections of CPU 5, pass through the nothing
Line number transmission module realizes data remote and remote control；The wireless data transmission module can according to communication distance select GPRS,
4G, LORA or WIFI module.
As shown in Figure 1, being connect with 4 input terminal of A/D circuits, for measuring oil well casing pressure.
Add rechargeable battery to power as shown in Figure 1, power-supply system 9 can be Alternating Current Power Supply, solar energy, is carried for whole device
Power supply source.
The course of work of the present embodiment is：Under the control of CPU 5, when receiving test instruction or reach the survey of setting
The time is tried, casing pressure is detected by pressure sensor 8 first, is opened by control circuit 2 if casing pressure is more than 0.3Mpa
Gas of the external venting solenoid valve 23 of infrasonic wave generator 20 into air in relief sleeve 30；Otherwise, pass through control circuit 2
Start electric inflation pump 21 to inflate into air accumulator 22, stops inflating when reservoir pressure reaches setting value, the pressure of setting
It can be changed according to the depth of tested liquid level and the volume difference of air accumulator, then, open internal venting solenoid valve 13 to casing
It deflates in 30.The opening time of solenoid valve can in a certain range adjust according to pressure, level.Opening solenoid valve
Start A/D conversions simultaneously, since the infrasound that gas release generates is propagated in casing 30, will be generated when encountering obstacle anti-
It penetrates, these back waves are picked up and be recorded in memory 5 after the conversion of A/D circuits 4 by sound pick-up 2.Sampling time length according to
Level may be set between 15~30 seconds.After completing a measurement period, CPU 5 starts velocity of sound sensor 1 and measures
Velocity of sound V.Echo-signal obtains echo time T by digital filtering and processing, and liquid level can be calculated using formula S=T*V/2
Depth.The initial data and velocity of sound value of acquisition are sent to host computer by DTU 7 or background server carries out processing and calculates
To well fluid level waveform, this completes the long-range automatic monitorings of oil well liquid level.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution, improvement and etc. done should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of oil well multi-functional automatic liquid level monitor based on velocity of sound sensor, which is characterized in that including：Velocity of sound sensor
(1), control circuit (2), infrasonic wave generator (20), sound pick-up (3), A/D circuits (4), CPU (5), memory (6), DTU
(7), pressure sensor (8), power-supply system (9), wellhead connector (10), shell (11)；It is the velocity of sound sensor (1), secondary
Sonic generator (20), sound pick-up (3), pressure sensor (8) are connected to wellhead connector (10)；Wellhead connector (9) and oil
Casing is connected；The output of sound pick-up (3) signal is connect with A/D circuits (4)；Control circuit, A/D circuits (4), memory (6),
DTU (7) is connect with CPU (5).
2. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The velocity of sound sensor (1) is ultrasonic wave speed measuring module, and the velocity of sound sensor (1) is connected with wellhead connector (10)
Logical, control signal, output signal and CPU (5) connections, for measuring the sound in different oil well casing pressure, temperature, medium
Spread speed.
3. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The sound pick-up (3) is miniature piezo-ceramic sound pick-up, and pickup face is connected with wellhead connector (9), for sound to be believed
Number electric signal is converted to, output signal is connect with A/D circuits (4) input terminal.
4. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The infrasonic wave generator (20) includes electric inflation pump (21), air accumulator (22), external venting solenoid valve (23), internally puts
Pneumoelectric magnet valve (24) and high-pressure air pipe；Electric inflation pump (21) connect by control circuit (2) with CPU (5), gas outlet and storage
Gas tank (22) is connected to；External venting solenoid valve (23) is connect by control circuit with CPU (5), inlet end and wellhead connector (9)
Connection, outlet side is connected to the outside of shell (11) by tracheae；Internal venting solenoid valve (24) by control circuit (2) with
CPU (5) connections, inlet end are connect by tracheae with air accumulator (22), and outlet side is connected with wellhead connector (9).
5. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The CPU (5) is the SCM system with real-time clock.
6. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The A/D circuits (4) are the analog to digital conversion circuits of sampling precision 10 or more, can be that microcontroller is included, in order to obtain
Higher precision can also use individual A/D chips or module.
7. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The DTU (7) is wireless data transmission module, through serial communication interface and CPU (5) connections, passes through the wireless data transmission module
Realize data remote and remote control；The wireless data transmission module can according to communication distance select GPRS, 4G, LORA or
WIFI module.
8. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The pressure sensor (8) is connected with wellhead connector (10), and output signal is connect with A/D circuits (4) input terminal, is used for
Measure oil well casing pressure.
9. the oil well multi-functional automatic liquid level monitor according to claim 1 based on velocity of sound sensor, it is characterised in that：
The power-supply system (9) can be that Alternating Current Power Supply, solar energy add rechargeable battery to power, and power supply is provided for whole device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810498157.XA CN108487901A (en) | 2018-05-23 | 2018-05-23 | Oil well multi-functional automatic liquid level monitor based on velocity of sound sensor |
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| CN201810498157.XA CN108487901A (en) | 2018-05-23 | 2018-05-23 | Oil well multi-functional automatic liquid level monitor based on velocity of sound sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219641A (en) * | 2019-05-27 | 2019-09-10 | 承德石油高等专科学校 | A kind of well liquid face test device and its test method |
| CN112177597A (en) * | 2019-07-05 | 2021-01-05 | 中国石油化工股份有限公司 | Shaft liquid level monitoring device |
| CN113047816A (en) * | 2021-04-14 | 2021-06-29 | 成都鑫泽机械有限公司 | Numerical control intelligent processing energy-saving beam-pumping unit |
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