CN110219640A - A kind of well calibration self-detecting instrument and calibration method - Google Patents
A kind of well calibration self-detecting instrument and calibration method Download PDFInfo
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- CN110219640A CN110219640A CN201910470638.4A CN201910470638A CN110219640A CN 110219640 A CN110219640 A CN 110219640A CN 201910470638 A CN201910470638 A CN 201910470638A CN 110219640 A CN110219640 A CN 110219640A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 182
- 239000007924 injection Substances 0.000 claims abstract description 182
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 179
- 238000005259 measurement Methods 0.000 claims description 31
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000002349 well water Substances 0.000 claims description 6
- 235000020681 well water Nutrition 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 52
- 239000003921 oil Substances 0.000 description 9
- 238000009826 distribution Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
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- 230000032683 aging Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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- 239000003643 water by type Substances 0.000 description 1
Classifications
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- 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
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Abstract
The invention discloses a kind of well calibration self-detecting instrument and calibration methods, comprising: determines initialization system according to running parameter；The error result between metering water filling total amount and practical water filling total amount is obtained according to the initialization system；It is calibrated according to the error result and water injection rate threshold value.The present invention can be adjusted the working system of injection well downhole flow regulator according to the working condition of each injection well downhole flow regulator in underground, and the error result between the metering water filling total amount according to measured by the well of this implementation calibration self-detecting instrument and practical water filling total amount, each injection well downhole flow regulator is calibrated, so as to reduce construction cost, maintenance cycle is reduced, while production capacity can also be improved.
Description
Technical field
The invention belongs to water injection well in oil fields the field of test technology, and in particular to a kind of well calibration self-detecting instrument and calibration side
Method.
Background technique
In the process of development, crude oil, which largely produces, so that stratum energy is gradually lost in oil field, so as to cause production capacity reduction.For
Maintenance crude oil produces efficiency, it is necessary to supplement stratum energy or reduce viscosity of crude to improve crude oil flow velocity.In order to the greatest extent
It is possible to reduce cost, by the research and practice of decades, form mature water filling yield-increasing technique.
In the actual production process, the oil reservoir number of each well often more than one, different oil reservoirs are due to strata pressure, hole
The properties such as porosity, permeability are all different, and the ability for causing it to absorb injection water is not also identical.And excessive consumption injects water, just
Can occur oil reservoir locally aqueous excessively high or even water logging the problem of, so that aqueous increase of surrounding oil well production fluid be caused too fast to ask
Topic, although Liquid output is improved, oil production will appear too fast phenomenon of successively decreasing.And it is insufficient to absorb water, then will lead to stratum
Energy supplement is insufficient, thus cause stratum potentiality that can not perform to maximum problem causes oil production to be successively decreased to waste production capacity
It is still too fast.And stratified injection water technology is according to the specific nature of each oil reservoir, scientific and reasonable gives each oil reservoir supplement foot
Enough energy, to improve yield and production yield rate.Currently, stratified injection water technology, which is realized, carries out layering note according to working system
Water, and with the lengthening of working time, water nozzle, the motor of each layer injection well downhole flow regulator in underground will appear abrasion, and water injection manifold is caused to measure
The reduction of precision is adjusted, while under high temperature environment, the electronic component of downhole water flow regulator gradually aging, so as to generate parameter
Drift or even component failure and the risk for surveying tune failure.
But problem above is solved, underground multilayer injection well downhole flow regulator can only be played well and be overhauled, demarcated by current technique, but
It is this mode construction cost height, long period, while also will affect production capacity.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of well calibration self-detecting instrument and calibrations
Method.The technical problem to be solved in the present invention is achieved through the following technical solutions:
A kind of calibration method of well water injection rate, comprising:
Initialization system is determined according to running parameter；
The error result between metering water filling total amount and practical water filling total amount is obtained according to the initialization system；
It is calibrated according to the error result and water injection rate threshold value.
In one embodiment of the invention, initialization system is determined according to running parameter, comprising:
Initialization system is determined according to the driving current of motor and the first current threshold.
In one embodiment of the invention, initialization system is determined according to the driving current of motor and the first current threshold
Degree, comprising:
The relationship between the driving current of motor and the first current threshold is judged, if the driving current of the motor is less than institute
The first current threshold is stated, then using original working system as the initialization system, if the driving current of the motor is greater than
First current threshold then updates the original working system and obtains the initialization system.
In one embodiment of the invention, initialization system is determined according to running parameter, comprising:
Initialization system is determined according to the operating current of single-chip microcontroller and the second current threshold.
In one embodiment of the invention, initialization is determined according to the operating current of single-chip microcontroller and the second current threshold
System, comprising:
The relationship between the operating current of single-chip microcontroller and the second current threshold is judged, if the operating current of the single-chip microcontroller is small
In second current threshold, then using original working system as the initialization system, if the work electricity of the single-chip microcontroller
Stream is greater than second current threshold, then updates the original working system and obtain the initialization system.
In one embodiment of the invention, metering water filling total amount and practical water filling are obtained according to the initialization system
Error result between total amount, comprising:
Water flood operations are carried out to several injection well downhole flow regulators according to the initialization system, obtain metering water filling total amount and practical note
Water inventory；
The error result is obtained according to the absolute difference between metering water filling total amount and practical water filling total amount.
In one embodiment of the invention, it is calibrated according to the error result and water injection rate threshold value, comprising:
The relationship between the error result and the water injection rate threshold value is judged, if the error result is less than the water filling
Threshold value is measured, then is calibrated if the error result is greater than the water injection rate threshold value according to presetting method without calibration.
In one embodiment of the invention, it is calibrated according to presetting method, comprising:
Original measurement standard according to setting sequence successively to several injection well downhole flow regulators in maximum open is updated, to complete
Calibration.
In one embodiment of the invention, successively initial in maximum open to several injection well downhole flow regulators according to setting sequence
Measurement criteria is updated, comprising:
Obtain the original measurement standard of several injection well downhole flow regulators；
Under conditions of several injection flows, according to the setting sequence successively to the described initial of each injection well downhole flow regulator
Measurement criteria is updated, and correspondence obtains each updated measurement criteria of the injection well downhole flow regulator.
The present embodiment also provides a kind of well calibration self-detecting instrument, comprising:
Controller；
Electromagnetic flowmeter connects the controller；
Regulating valve connects the electromagnetic flowmeter；
Actuator connects the regulating valve.
Beneficial effects of the present invention:
The present invention can be adjusted the working system of injection well downhole flow regulator according to the working condition of each injection well downhole flow regulator in underground, and root
Error result between metering water filling total amount measured by well calibration self-detecting instrument according to this implementation and practical water filling total amount, to each
A injection well downhole flow regulator is calibrated, and so as to reduce construction cost, reduces maintenance cycle, while can also improve production capacity.
The present invention is described in further details below with reference to accompanying drawings and embodiments.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of well calibration self-detecting instrument provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another well calibration self-detecting instrument provided in an embodiment of the present invention；
Fig. 3 is a kind of flow diagram of the calibration method of well water injection rate provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of the calibration method of another well water injection rate provided in an embodiment of the present invention.
Description of symbols:
1- filling pipe, 2- controller, 3- regulating valve, 4- water inlet, 5- electromagnetic flowmeter, 6- actuator, 7- water outlet,
8- single armored cable, 9- injection well downhole flow regulator 1,10- cable-passing packer 1,11- injection well downhole flow regulator 2,12- cable-passing packer 2,13- water distribution
Device 3.
Specific embodiment
Further detailed description is done to the present invention combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
Embodiment one
Referring to Figure 1, Fig. 1 is a kind of structural schematic diagram of well calibration self-detecting instrument provided in an embodiment of the present invention.This reality
It applies example and a kind of well calibration self-detecting instrument is provided, comprising: controller 2, regulating valve 3, electromagnetic flowmeter 5, actuator 6, wherein electromagnetism
Flowmeter 5 connects controller 2, and regulating valve 3 connects electromagnetic flowmeter 5, and actuator 6 connects regulating valve 3.
Fig. 2 is referred to, the present embodiment carries out well calibration self-detecting instrument so that underground is configured with three layers of injection well downhole flow regulator as an example specific
It introduces, three layers of injection well downhole flow regulator are respectively first layer injection well downhole flow regulator 1, second layer injection well downhole flow regulator 2 and third layer injection well downhole flow regulator 3, specifically, this implementation
The well calibration self-detecting instrument of example is by water inlet ground plane filling pipe 1, and the surface water enters Electromagnetic Flow through water inlet 4 later
Meter, the electromagnetic flowmeter can be measured to by the injected water of water inlet 4, and the measurement result is denoted as metering water filling always
Amount, regulating valve 3 and the cooperation of actuator 6 adjust the control of the pressure and flow that are injected into underground three layer injection well downhole flow regulator.
Controller 2 can be connected with injection well downhole flow regulator 1, injection well downhole flow regulator 2, injection well downhole flow regulator 3 respectively by single armored cable, Ke Yishi
The power supply of existing downhole water flow regulator and communication function, for example, controller can read the pressure, temperature, flow, water of each layer injection well downhole flow regulator
The multiple parameters such as mouth aperture, motor power consumption and other Primary Component power consumptions, can also control downhole instrument, realize that water filling is calculated
The functions such as method optimizes, Primary Component drop volume uses.
Further, the controller 2 of the present embodiment can calibrate multilayer injection well downhole flow regulator, can pass through electromagnetic current first
Flowmeter measurement metering water filling total amount, i.e., injected the total amount of water, then by well in real time by electromagnetic flowmeter real-time monitoring by water inlet 4
Lower monitoring device monitors the water filling total amount of each layer injection well downhole flow regulator, for example, the water quantity monitoring of every layer of underground injection well downhole flow regulator can pass through correspondence
Hall position sensor detected, i.e., when injection well downhole flow regulator does not fill the water, the count value of hall position sensor is 0 (count value
The as voltage pulse number that detects of single-chip microcontroller), when the injection well downhole flow regulator starts water filling, supervised by hall position sensor
It surveys, sets the corresponding water injection rate of every 1000 count values as 1m3, which can pass through underground single chip computer measurement hall position
The voltage pulse number of sensor obtains, then the water injection rate of every layer of injection well downhole flow regulator is fed back to controller 2 by single-chip microcontroller, to obtain
The water filling summation of each layer injection well downhole flow regulator, i.e., practical water filling total amount, when the abrasion condition of downhole water flow regulator is more serious, the reality that is monitored
Border, which fills the water total amount, can be greater than metering water filling total amount, when the difference actually between water filling total amount and metering water filling total amount is greater than a certain threshold
It when value, then needs the flow monitoring standard to every layer of injection well downhole flow regulator to calibrate, is specifically as follows, successively by one layer of water distribution therein
The water nozzle of device is opened, and in the case that the water nozzle aperture and water injection pressure of this layer of injection well downhole flow regulator are constant, simultaneously closes off other layer of position water distribution
Device compares the injection flow of the actual measurement of this layer of injection well downhole flow regulator and water injection rate that electromagnetic flowmeter is measured, if error is more than institute
The threshold value of setting then needs the flow measurement standard to this layer of injection well downhole flow regulator to calibrate, and calibration process for example can be first will
The water nozzle of this layer of injection well downhole flow regulator opens to the maximum, and well calibrates self-detecting instrument by controlling to adjust valve and actuator, in a manner of constant current according to
The water of the secondary a variety of different flow steps of injection, such as successively according to 0m3/d、5m3/d、10m3Tri- kinds of flow step injections of/d,
0m3/d、5m3Error result is without departing from threshold value when/d, when the flow for adjusting valve regulation is 10m3When/d, when electromagnetic flowmeter detects
Metering water filling total amount be 1m3, the measurement criteria of this layer of injection well downhole flow regulator is that 1000 count values correspond to 1m3, and single-chip microcontroller detects
When count value is 900, the practical water filling total amount of this layer of injection well downhole flow regulator has reached 1m3, then need be in flow to this layer of injection well downhole flow regulator
10m3Measurement criteria when/d is calibrated, i.e., this layer of injection well downhole flow regulator is in flow 10m3When/d, when detecting 900 count values,
Corresponding practical water filling total amount is 1m3, and the scheme of the recalibration is fed back into controller, it is obtained in time often convenient for controller
The state of a injection well downhole flow regulator completes calibration, the school of other injection well downhole flow regulators to this layer of injection well downhole flow regulator by the calibration program of multiple step flows
Quasi-project is similar to the above, and details are not described herein.
The well calibration self-detecting instrument of the present embodiment can also periodically calibrate each layer injection well downhole flow regulator water nozzle aperture in underground, prevent
Aperture caused by the water nozzle that only works long hours abrasion etc. controls error.The controller of the well prover of the present embodiment can be successively
The water nozzle state for controlling each layer injection well downhole flow regulator, is adjusted to completely close and fully open, and acquires the opening value under two states,
And 0% will be calibrated in completely closed state and be calibrated to 100% in full open position, to improve the control of water nozzle aperture
Precision processed.For example, comparing the note of the actual measurement of this layer of injection well downhole flow regulator in the case where single layer water nozzle aperture and constant water injection pressure
The water injection rate that inbound traffics and electromagnetic flowmeter are measured, if error is more than set threshold value, if such as error is more than 3%, i.e.,
Determine that the water nozzle of this layer of injection well downhole flow regulator has existed the possibility of abrasion, needs to recalibrate.Calibration method: by the water of this layer of injection well downhole flow regulator
Mouth completely closes, (be supplied to controller by limit switch and completely close signal), and the counting that the single-chip microcontroller water nozzle is recorded
Value is reset, that is, corresponding to count value is 0；The water nozzle is fully opened by controller later and (is fully opened by limit switch offer
Signal), the voltage pulse number exported from closing to opening procedure hall position sensor by single chip computer measurement, if ought beat completely
The count value detected when opening is 100, then by 100 as the count value after calibration, i.e., water nozzle is from closing to fully opening
When technical value detected be 100, i.e., be completely closed state when count value is 0, when count value is 100, to fully open
State, the water nozzle aperture after calibration meet linear relationship, by the new count value of processing two above state, complete water nozzle aperture
Mark again inspection.
The present embodiment well calibration self-detecting instrument is by detecting whether the driving current of the corresponding motor of each injection well downhole flow regulator occurs
It is abnormal, electric machine operation state is adjusted.In the motor course of work, its driving current size of single-chip microcontroller real-time monitoring, normally
E.g., about 10-20mA, if monitoring, electric current persistently increases above 30mA, judges that the motor load increases, such case has can
Can caused by water nozzle movement is hampered, therefore the driving current of electric current can be fed back to controller, controller control starting is compacted
Dynamic to adjust program, even motor rotating forward is hampered, then motor reversal one is adjusted and encloses, is further continued for just turning around, this behaviour is repeated
Make, until driving current carries out subsequent action after restoring to normal range (NR).Caused by this operation can prevent injection well downhole flow regulator water nozzle from blocking
Motor rotation blockage extends motor service life.By the driving current of the motor of optimization downhole water flow regulator, overload operation is avoided,
Extend motor service life.
The present embodiment well calibrates self-detecting instrument and passes through the operating current exception for detecting the corresponding single-chip microcontroller of each injection well downhole flow regulator, right
Single-chip microcontroller working condition is adjusted.For example, if single-chip microcontroller running current is about 10mA, the controller real-time monitoring monolithic
The supply current of machine, if electric current is more than 20mA, controller control single chip computer starts service intermittent safeguard measure, i.e., in water nozzle tune
It is whole to cut off the power supply of single-chip microcontroller to after destination locations, it was waken up every 10 seconds primary, carries out data acquisition, the method reduces monolithic
Machine frequency of use, prolongs the service life.By optimizing the clock frequency of downhole water flow regulator single-chip microcontroller, to reduce single-chip microcontroller
Use power consumption.
The present embodiment can also be secondary by optimizing the survey frequency modulation of downhole water flow regulator, extends the service life of water nozzle, for example, just
Begin the setting injection well downhole flow regulator of tune of survey in every 3 days, is changed to survey in every 10 days and adjusts an injection well downhole flow regulator, surveys frequency modulation by extending, reach extension
The purpose of the service life of water nozzle.
The present embodiment can also carry out in advance fault pre-alarming, repair potential faults in advance by acquiring information, lower O&M at
This.For example, the supply current of acquisition single-chip microcontroller controls if monitoring control devices are more than the threshold range set to supply current
Device control alarm is alarmed, to achieve the purpose that carry out fault pre-alarming in advance.
Embodiment two
Fig. 3 is referred to, Fig. 3 is a kind of process signal of the calibration method of well water injection rate provided in an embodiment of the present invention
Figure.The present embodiment on the basis of the above embodiments, each layer water distribution using calibration self-detecting instrument of well provided by it to underground
Device is calibrated, and the calibration method of the well water injection rate includes:
Step 1 determines initialization system according to running parameter；
Step 2, basis state initialization system and obtain the error result between metering water filling total amount and practical water filling total amount；
Step 3 is calibrated according to error result and water injection rate threshold value.
The present embodiment determines the need for being adjusted running parameter by the way that whether detection running parameter locates existing exception, such as
Whether the driving current of motor or the operating current of single-chip microcontroller there is exception, when needing to be adjusted, then need after the adjustment
Re-optimization is carried out to the working system of each layer injection well downhole flow regulator, with the initialization system after being optimized, wherein working system is
It is configured according to water injection rate of the task to each layer injection well downhole flow regulator, such as three in Fig. 2 layer injection well downhole flow regulator, not to running parameter tune
Before whole, need to complete 25m within 24 hours3Water injection rate, and injection well downhole flow regulator 1 required for complete water injection rate be 10m3, needed for injection well downhole flow regulator 2
The water injection rate to be completed is 5m3, the water injection rate completed required for injection well downhole flow regulator 3 be 10m3, and after running parameter is adjusted, then
The working system need to be reformulated, the working system reformulated is initialization system, later just according to initial
Working system carries out water flood operations to each layer injection well downhole flow regulator, and the electromagnetic flowmeter survey of well calibration self-detecting instrument is then utilized in water filling
Metering water filling total amount, the voltage pulse number of every layer of injection well downhole flow regulator is monitored by hall position sensor, so that it is corresponding to obtain its
Count value is determined the water injection rate of each layer injection well downhole flow regulator by count value, and the count value of each layer injection well downhole flow regulator is fed back to controller, is led to
Cross the summation that controller determines the water injection rate of each layer injection well downhole flow regulator, which is practical water filling total amount, will metering water filling total amount with
Practical water filling total amount is compared, and is obtained error result, is compared by error result with water injection rate threshold value, it is determined whether is needed
Each layer injection well downhole flow regulator is calibrated, which is suitable for the threshold whether error in judgement result exceeds setting range
Value, water injection rate threshold value can be set according to the actual situation, and the present embodiment is set not to this.
Specifically, the running parameter of the present embodiment for example can be the driving current of motor, by the driving for detecting motor
Electric current and the first current threshold determine initialization system, and the first current threshold is for judging whether the driving current of motor exceeds
One threshold value of setting range, the first current threshold can be set according to the actual situation, and the present embodiment is set not to this
It is fixed.
Further, the relationship between the driving current of motor and the first current threshold is judged, if the driving of the motor
Electric current is less than the first current threshold, then using original working system as initialization system, which is each layer
The working system that injection well downhole flow regulator most starts updates original working system and obtains if the driving current of motor is greater than the first current threshold
To initialization system.
For example, the driving current of motor normal condition is 10-20mA, the first current threshold is set as 30mA, if when detection
To the corresponding motor of injection well downhole flow regulator 1 driving current be greater than 30mA when, then judge the motor load increase, then need driving current
It adjusts to normal operating conditions, if such case is caused by being hampered as water nozzle movement, the driving current of electric current can be fed back
To controller, controller control starting, which is wriggled, adjusts program, and even motor rotating forward is hampered, then motor reversal one is adjusted and encloses, then
Continuation is just turned around, this operation is repeated, until driving current carries out subsequent action after restoring to normal range (NR), and through above-mentioned
It after operation, needs to be adjusted the working system of injection well downhole flow regulator, before not adjusting running parameter, needs to complete 25m within 24 hours3's
Water injection rate, and the water injection rate completed required for injection well downhole flow regulator 1 is 10m3, the water injection rate completed required for injection well downhole flow regulator 2 be 5m3, injection well downhole flow regulator
The water injection rate completed required for 3 is 10m3, and after injection well downhole flow regulator 1 is adjusted, due to the working life in order to keep the motor,
It then needs to reduce its workload, then needs re-optimization working system, reduce the water injection rate of injection well downhole flow regulator 1, then it for example can be by water distribution
The water injection rate completed required for device 1 is adjusted to 6m3, the water injection rate completed required for injection well downhole flow regulator 2 be 7m3, it is complete required for injection well downhole flow regulator 3
At water injection rate be 12m3, to complete 24 hours completion 25m3Water injection rate task.Above-mentioned working system can be according to reality
Situation is adjusted, and task can be completed by being subject to, and the present embodiment is specifically limited not to this.
Specifically, the running parameter of the present embodiment for example can be the operating current of single-chip microcontroller, pass through detection single-chip microcontroller
Operating current and the second current threshold determine initialization system, and the second current threshold is used to judge that the operating current of single-chip microcontroller to be
No beyond setting range a threshold value, the second current threshold can be set according to the actual situation, and the present embodiment is not to this
It is set.
For example, the operating current of single-chip microcontroller normal condition is 10mA, the second current threshold is set as 20mA, if when detecting
When the operating current of the corresponding single-chip microcontroller of injection well downhole flow regulator 1 is greater than 20mA, the starting service intermittent protection of controller control single chip computer is arranged
It applies, i.e., after water nozzle is adjusted to destination locations, cuts off the power supply of single-chip microcontroller, primary, progress data acquisition was waken up every 10 seconds, and
After the single-chip microcontroller starts service intermittent mode, need to be adjusted the working system of injection well downhole flow regulator, not to running parameter tune
Before whole, need to complete 25m within 24 hours3Water injection rate, and injection well downhole flow regulator 1 required for complete water injection rate be 10m3, needed for injection well downhole flow regulator 2
The water injection rate to be completed is 5m3, the water injection rate completed required for injection well downhole flow regulator 3 be 10m3, and after injection well downhole flow regulator 1 is adjusted, due to
It in order to guarantee the working life of single-chip microcontroller, then needs to reduce its workload, then needs re-optimization working system, reduce injection well downhole flow regulator 1
Water injection rate, then for example the water injection rate of completion required for injection well downhole flow regulator 1 can be adjusted to 7m3, the note completed required for injection well downhole flow regulator 2
Water is 8m3, the water injection rate completed required for injection well downhole flow regulator 3 be 10m3, to complete 24 hours completion 25m3Water injection rate appoint
Business.Above-mentioned working system can be adjusted according to the actual situation, and task can be completed by being subject to, and the present embodiment is done not to this
It is specific to limit.
Further, the error result between metering water filling total amount and practical water filling total amount is obtained according to initialization system
It can specifically include and water flood operations are carried out to several injection well downhole flow regulators according to initialization system, obtain metering water filling total amount and practical note
Water inventory；Error result is obtained according to the absolute difference between metering water filling total amount and practical water filling total amount.
Further, it is calibrated according to error result and water injection rate threshold value, comprising: error in judgement result and water injection rate threshold
Relationship between value, if error result is less than water injection rate threshold value, without calibration, if error result is greater than water injection rate threshold value,
It is then calibrated according to presetting method, i.e., according to the setting sequence successively original measurement mark to several injection well downhole flow regulators in maximum open
Standard is updated, and to complete to calibrate, setting sequence for example can be for from first layer injection well downhole flow regulator to the last layer injection well downhole flow regulator, can also
Think from the last layer injection well downhole flow regulator to first layer injection well downhole flow regulator, or other sequences, the original measurement standard, that is, injection well downhole flow regulator
Its corresponding variable when water nozzle injects a certain amount of water in maximum open, such as flow through 1m3Corresponding count value is 1000,
When water nozzle abrasion is excessive, since water under the conditions of certain variable, being actually implanted into is greater than according to original measurement mark
Water will definitely be arrived, thus needs to be updated original measurement standard, such as original measurement standard are as follows: count value is 1000 corresponding
Water be 1m3, updated measurement criteria are as follows: count value is that 900 corresponding waters are 1m3。
Further, according to setting sequence, successively the original measurement standard to several injection well downhole flow regulators in maximum open is carried out more
It can newly specifically include: obtain the original measurement standard of several injection well downhole flow regulators；It is suitable according to setting under conditions of several injection flows
Sequence is successively updated the original measurement standard of each injection well downhole flow regulator, and correspondence obtains the updated measurement criteria of each injection well downhole flow regulator.
Successively each layer of injection well downhole flow regulator is opened, each injection well downhole flow regulator calibrates it under the conditions of different flow, thus completion pair
The calibration of each water nozzle.
For example, opening the water nozzle of injection well downhole flow regulator according to setting sequence, calibration process for example can be, first by this layer of water distribution
The water nozzle of device opens to the maximum, and closes the injection well downhole flow regulator of other layers, and well calibrates self-detecting instrument by controlling to adjust valve and actuator, with perseverance
The mode of stream is implanted sequentially the water of a variety of different flow steps, such as successively according to 0m3/d、5m3/d、10m3Tri- kinds of flows of/d
Step injection, in 0m3/d、5m3Error result is without departing from threshold value when/d, when the flow for adjusting valve regulation is 10m3When/d, work as electromagnetism
The metering water filling total amount of flowmeter detection is 1m3, the measurement criteria of this layer of injection well downhole flow regulator is that 1000 count values correspond to 1m3, and it is single
Piece machine examination is measured when count value is 900, and the practical water filling total amount of this layer of injection well downhole flow regulator has reached 1m3, then need to this layer of water distribution
Device is 10m in flow3Measurement criteria when/d is calibrated, i.e., this layer of injection well downhole flow regulator is in flow 10m3When/d, when detecting 900
When count value, corresponding practical water filling total amount is 1m3, and the scheme of the recalibration is fed back into controller, convenient for control
Device obtains the state of each injection well downhole flow regulator in time, by the calibration program of multiple step flows, completes calibration to this layer of injection well downhole flow regulator,
His calibration program of injection well downhole flow regulator is similar to the above, and details are not described herein.
Therefore the controller of the present embodiment can include determining that module, error calculating module, calibration module, wherein determining mould
Block is for determining initialization system according to running parameter, and error calculating module according to the initialization system based on obtaining
Error result between amount water filling total amount and practical water filling total amount, calibration module are used for according to the error result and water injection rate threshold
Value is calibrated, and implementing principle and technical effect are similar with above-mentioned calibration method, and details are not described herein.
In order to better illustrate the scheme of the present embodiment, Fig. 3 is referred to, well calibration self-detecting instrument is powered on first,
Make its work, self-detecting instrument reads former working system later, and carries out self-test, and whether just the relevant running parameter of detection injection well downhole flow regulator
Often, if normal, then using former working system as initialization system, and by its execution, if abnormal, then to abnormal work
Parameter is optimized and is adjusted, after being adjusted, update working system to initialization system, and by its execution, it is right later
Than the error result between metering water filling total amount measured by electromagnetic flowmeter and practical water filling total amount, if error result is less than
Design objective (i.e. water injection rate threshold value) does not need then to carry out calibration operation, if error result is more than design objective, needs to carry out
Calibration operation, and calibration is re-started, and self study operation can be carried out.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
What can be combined in any suitable manner in one or more embodiment or examples.In addition, those skilled in the art can say this
Different embodiments or examples described in bright book are engaged and are combined.
It will be understood by those skilled in the art that embodiments herein can provide as method, apparatus (equipment) or computer journey
Sequence product.Therefore, complete hardware embodiment, complete software embodiment or combining software and hardware aspects can be used in the application
They are all referred to as " module " or " system " by the form of embodiment here.Moreover, the application can be used it is one or more its
In include computer usable program code computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM,
Optical memory etc.) on the form of computer program product implemented.Computer program is stored/distributed in suitable medium,
There is provided together with other hardware or as hardware a part, can also use other distribution forms, such as by Internet or
Other wired or wireless telecommunication systems.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of calibration method of well water injection rate characterized by comprising
Initialization system is determined according to running parameter；
The error result between metering water filling total amount and practical water filling total amount is obtained according to the initialization system；
It is calibrated according to the error result and water injection rate threshold value.
2. calibration method according to claim 1, which is characterized in that determine initialization system according to running parameter, wrap
It includes:
Initialization system is determined according to the driving current of motor and the first current threshold.
3. calibration method according to claim 2, which is characterized in that according to the driving current of motor and the first current threshold
Determine initialization system, comprising:
The relationship between the driving current of motor and the first current threshold is judged, if the driving current of the motor is less than described the
One current threshold, then using original working system as the initialization system, if the driving current of the motor is greater than described
First current threshold then updates the original working system and obtains the initialization system.
4. calibration method according to claim 1, which is characterized in that determine initialization system according to running parameter, wrap
It includes:
Initialization system is determined according to the operating current of single-chip microcontroller and the second current threshold.
5. calibration method according to claim 4, which is characterized in that according to the operating current of single-chip microcontroller and the second current threshold
It is worth and determines initialization system, comprising:
The relationship between the operating current of single-chip microcontroller and the second current threshold is judged, if the operating current of the single-chip microcontroller is less than institute
The second current threshold is stated, then using original working system as the initialization system, if the operating current of the single-chip microcontroller is big
In second current threshold, then updates the original working system and obtain the initialization system.
6. calibration method according to claim 1, which is characterized in that obtain metering water filling according to the initialization system
Error result between total amount and practical water filling total amount, comprising:
Water flood operations are carried out to several injection well downhole flow regulators according to the initialization system, metering water filling total amount is obtained and practical water filling is total
Amount；
The error result is obtained according to the absolute difference between metering water filling total amount and practical water filling total amount.
7. calibration method according to claim 1, which is characterized in that carried out according to the error result and water injection rate threshold value
Calibration, comprising:
The relationship between the error result and the water injection rate threshold value is judged, if the error result is less than the water injection rate threshold
Value is then calibrated if the error result is greater than the water injection rate threshold value according to presetting method without calibration.
8. calibration method according to claim 7, which is characterized in that calibrated according to presetting method, comprising:
Original measurement standard according to setting sequence successively to several injection well downhole flow regulators in maximum open is updated, to complete school
It is quasi-.
9. calibration method according to claim 8, which is characterized in that according to setting sequence successively to several injection well downhole flow regulators most
Original measurement standard when big opening is updated, comprising:
Obtain the original measurement standard of several injection well downhole flow regulators；
Under conditions of several injection flows, according to the setting sequence successively to the original measurement of each injection well downhole flow regulator
Standard is updated, and correspondence obtains each updated measurement criteria of the injection well downhole flow regulator.
10. a kind of well calibrates self-detecting instrument characterized by comprising
Controller；
Electromagnetic flowmeter connects the controller；
Regulating valve connects the electromagnetic flowmeter；
Actuator connects the regulating valve.
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