CN101871340A - Ultrasonic measured and controlled water distributing device - Google Patents
Ultrasonic measured and controlled water distributing device Download PDFInfo
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- CN101871340A CN101871340A CN 201010202263 CN201010202263A CN101871340A CN 101871340 A CN101871340 A CN 101871340A CN 201010202263 CN201010202263 CN 201010202263 CN 201010202263 A CN201010202263 A CN 201010202263A CN 101871340 A CN101871340 A CN 101871340A
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Abstract
The invention relates to an ultrasonic measured and controlled water distributing device which solves the difficult problems of complicated allocation operation, low efficiency, limited application and the like existing in the prior art. The ultrasonic measured and controlled water distributing device comprises a sleeve pipe, a centralizer, a water-plugging packer, an ultrasonic measured and adjusted water distributor, a ball seat, a screen pipe and a screwed plug and is technically characterized in that underground ultrasonic communication units which are connected with a measurement and adjustment control unit are arranged in the ultrasonic measured and adjusted water distributor in the sleeve pipe, the measurement and adjustment control unit is respectively connected with an ultrasonic flow sensor, a pressure sensor, a temperature sensor and a regulating water nozzle driven by a micromotor, and each underground ultrasonic communication unit is respectively communicated with a ground ultrasonic communication unit by adopting ultrasonic encoding to realize data information transmission between the underground and the ground ultrasonic communication units and automatically finish the regulation on the water injection quantity of each water injection layer. The ultrasonic measured and controlled water distributing device has reasonable structural design, accurate water distribution quantity, no influence from the increase of the water injection layers and widened application range, and realizes that the distributed water flow is directly measured through wireless control by utilizing an ultrasonic communication technology.
Description
Technical field
The present invention relates to water distribution, monitoring device that a kind of water injection well in oil fields seperated layer water injection is used, particularly a kind ofly realize the ultrasonic measured and controlled water distributing device of controlled in wireless, monitoring water injection well layering water distribution, be widely used in layering water distribution, the monitoring of water injection well in deep-well, ultradeep well and the inclined shaft in oil field based on the ultrasonic communication technology.
Background technology
At present, because seperated layer water injection has the double action of the displacement of reservoir oil for water, additional stratum energy, so more and more be subjected to the attention in each oil field.But, the technical barrier that separated-zone water infection oil field faces is to realize best injection allocation according to the geological characteristics of production requirement and each water filling layer effectively, to reach the flood effectiveness that improves separate water injection well, reduce the oil field composite water cut, improve oil recovery rate, guarantee the purpose of the long-term high and stable yields in oil field.
Existing water dispensing apparatus mainly contains:
1, eccentric center water-distributing device.Its principle is the injection well downhole flow regulator that a replaceable water nozzle is housed at the underground water-injection layer, when needs change water injection rate, drop into the pulling and running tool of a special replacement water nozzle from ground toward water injection well, the water nozzle of taking-up water dispensing apparatus one side, drop into the water nozzle of changing again, drop into the flowmeter survey water injection rate then.If water injection rate does not reach requirement, then to change water nozzle again.Its shortcoming is to need overlapping investment, taking-up pulling and running tool, frequently changes water nozzle and regulates water injection rate, and the allotment operating efficiency is low, and test period is long, and working strength is big.In addition, this device is used limited, can't use in deep-well, ultradeep well and inclined shaft.
2, concentric water dispensing apparatus.Its principle is that the water dispensing apparatus of underground water-injection layer has adjustable water nozzle, drops into the measuring and adjusting device that has flow meter during water distribution, regulates while measuring.Its advantage is to have improved the problem that eccentric blending technology need repeat to change water nozzle, at the water filling layer, and underground survey adjusting device monitoring real-time traffic, according to the injection allocation Flow-rate adjustment water nozzle that configures in advance, finish the injection allocation job requirement, water distribution ratio of precision eccentric center water-distributing device height, efficient increases.Its shortcoming is: (1) needs cable or steel wire to take out the underground survey adjusting device, and operation intensity is higher; (2) because adjustable water nozzle can be changed and rotate, occur adjustable water nozzle easily and come off, stop up the accident of well.(3) since the water dispensing apparatus center latus rectum of the water layer of making a bet than the water dispensing apparatus center latus rectum little (helping to change adjustable water nozzle) of last water filling layer, and the diameter of measuring and adjusting device is fixed, so water dispensing apparatus is restricted to the water injection well number of plies with one heart; (4) the measuring and adjusting device requires to be positioned at the water dispensing apparatus center and could effectively regulate when regulating, because gravity effect, for inclined shaft, the measuring and adjusting device can be amesiality, make troubles for adjusting water distribution work,, be not suitable for inclined shaft so the water dispensing apparatus application also has limitation with one heart.
3, down-hole water dispensing apparatus.The type device comprises measuring system and regulating system.Measuring system can be measured flow, and regulating system can drive water nozzle and change water injection rate.Its shortcoming is that the target water injection rate need set in advance on ground, regulates automatically after going into the well with water injection pipe, but must take out water injection well to water dispensing apparatus when needs change water injection rate, the setting of making amendment on ground, operating cost improves greatly, operates dumb, also inconvenient.
In patent publication No. is in " a kind of method with the sound wave remote control water distribution " of CN101498211A, the sonic generator remote control of the intelligent injection well downhole flow regulator of employing and sleeve pipe, water injection pipe, well anchor, Packer for blocking water, ball seat, screen casing, the supporting assembling of plug has been proposed, carry out the method for down-hole water distribution, meanwhile, also applied for " water injection well intelligence injection well downhole flow regulator " with the identical utility model patent CN201437719 of the technology contents of its supporting intelligent injection well downhole flow regulator.The advantage of the sound wave remote control decreasing water distribution method of the sonic generator of the intelligent injection well downhole flow regulator of this employing be overcome that prior art removes back and forth that throw in catcher that steel wire hangs changes that water nozzle or downhole instrument exist low, the complicated operation of efficient, the deficiency that cost is high, pass through the switch of the adjustable water nozzle in sound wave controlled down-hole on ground, finish seperated layer water injection allotment task, solve the injection allocation problem of dispensing well effectively.Its operating principle is: according to the darcy theorem, when realizing multi-zone flow regulating, need each water filling layer to open separately, water filling gate size is adjusted on ground simultaneously, make this layer water injection rate equal the target water injection rate, at this moment, send instruction from ground, under the microprocessor records of down-hole under the target water injection rate corresponding stream pressure value, repeat above operation, stream pressure value when noting every layer of difference and opening is separately opened each layer more simultaneously, regulates adjustable water nozzle according to the stream pressure value of record and reaches the target water injection rate.But, this method is along with the increase of water filling layer, increased workload virtually, not only need each water filling layer to be operated item by item by the ground technician, note corresponding stream pressure value, very high to constructor's technical requirements, operate cumbersome, and the pressure data of down-hole etc. can not be turned back to ground for staff's reference, can't in time accurately finish retouching operation according to actual needs.Because this device is to rely on the indirect measuring and adjusting water injection rate of gaging pressure, and subsurface environment complexity, operating mode are special, each layer water injection pressure also is subjected to the interference of ground and other water filling layers, so there is the problem that is difficult to guarantee the water distribution accuracy, increase along with the water filling layer, the influence of interlayer is big more, and the injection allocation trueness error is just big more.
Summary of the invention
The objective of the invention is to propose a kind of ultrasonic measured and controlled water distributing device, it has solved the allotment complicated operation that prior art exists, efficient is low, the injection allocation trueness error is big, the operating cost height, use difficult problems such as limited, its reasonable in design, remove and keep the easy for installation of existing sound wave remote control decreasing water distribution method, simple to operate, finish outside the advantage of layering water distribution, also have the ultrasonic communication of utilization technology realization controlled in wireless and directly measure distributed water flow, monitor subsurface environment in real time and read monitoring result, setting flexibly, communication code is transferred to the adjusting that executive component is finished each layer water injection rate automatically with control instruction, make distributed water flow more accurate, injection allocation is stable, and its scope of application is significantly widened in the influence that the injection allocation precision is not increased by the water filling layer.
The technical solution used in the present invention is: this ultrasonic measured and controlled water distributing device comprises the sleeve pipe that is provided with a plurality of water filling layers, be assembled in and pass through be linked in sequence together centralizer of metal water injection pipe in the described sleeve pipe, the ultrasonic wave that utilizes Packer for blocking water to be encapsulated in each described water filling layer is surveyed water flow regulator and ball seat, screen casing and plug, its technical essential is: connect the described ultrasonic wave that is encapsulated in the described sleeve pipe by described metal water injection pipe and survey and be provided with in the water flow regulator body annular seal space and survey regulation and control and make the underground ultrasonic wave communication unit that the unit is connected, described survey regulation and control system unit respectively with ultrasonic flow sensor, pressure sensor, temperature pick up is connected with the adjusting water nozzle that micro machine drives, the described metal water injection pipe of each described underground ultrasonic wave communication unit by using respectively be arranged on ground ultrasonic communication unit and adopt the ultrasonic wave code communication each other, realize the data information transfer between described underground ultrasonic wave communication unit and ultrasonic communication unit, ground, the described micro machine of surveying in the water flow regulator by the described ultrasonic wave of described survey regulation and control system unit controls drives described adjusting water nozzle, finishes the adjusting of the water injection rate of each described water filling layer automatically.
The control loop that described survey regulation and control system unit mainly is made up of single-chip microcomputer, timing circuit, analog signal processing circuit, drive circuit.
The control loop that each described underground ultrasonic wave communication unit and ultrasonic communication unit, ground mainly are made up of ultrasonic transducer, driver element, signal amplification unit, filter unit, coding processing unit and data bus interface, adopt the half-duplex mode of operation to communicate, each described ultrasonic communication unit can send, receiving data information, and can only have a described ultrasonic communication unit to carry out the transmission task at one time.The staff surveys water flow regulator on ground by ground ultrasonic communication unit wireless remote control underground ultrasonic ripple and operates, and promptly finishes layering water distribution and surveying work automatically, and the result can be returned ground, for technician's reference.
Advantage and good effect that the present invention has are as follows: because the present invention is improved on the basis of existing layering decreasing water distribution method, only needing that ultrasonic wave is surveyed water flow regulator follows in the metal water injection pipe input water injection well, utilize in its body annular seal space underground ultrasonic wave communication unit and by respectively with ultrasonic flow sensor, pressure sensor, the survey regulation and control system unit that temperature pick up is connected with the adjusting water nozzle that micro machine drives, make each underground ultrasonic wave communication unit respectively and be arranged between the ground ultrasonic communication unit and adopt the ultrasonic wave code communication by the metal water injection pipe, so need not other operation, can realize the data information transfer of the two.When needs are revised water injection rate, operating personnel use ultrasonic communication unit, ground that the target water injection rate that will revise is sent to the underground ultrasonic ripple and survey water flow regulator, the survey regulation and control system unit controls micro machine of surveying in the water flow regulator by ultrasonic wave drives the adjusting water nozzle, automatically finish the adjusting of the water injection rate of each water filling layer, can only send instruction with existing from ground to the down-hole with the sound wave remote control water dispensing apparatus, can't two-way communication compare, it can be with the ambient parameter of each water filling layer of down-hole (as flow, pressure, temperature etc.) and the result transmission of regulating water injection rate go back to ground, for technician's reference.Therefore, this installs not only reasonable in design, can keep the easy for installation of existing sound wave remote control decreasing water distribution method, advantage simple to operate, solved effectively that the efficient that existing water dispensing apparatus exists is low, the allotment complicated operation of overlapping investment, taking-up, a difficult problem such as the injection allocation trueness error is big, operating cost is high, application is limited, and make full use of the characteristics that sound wave can be propagated in metal medium, be implemented on the same metal medium and transmit instruction and data between a plurality of ultrasonic communications unit.Also just because of utilized the ultrasonic communication technology, thereby realize that controlled in wireless directly accurately measures distributed water flow with ultrasonic flow sensor, and disturbed little, so can monitor subsurface environment in real time and read monitoring result.In addition, employing is set flexibly, and communication code can be transferred to control instruction rapidly executive component control micro machine driving adjusting water nozzle, automatically finish the adjusting of each layer water injection rate, make distributed water flow more accurately, injection allocation is stable, and the injection allocation precision influence that not increased by the water filling layer.Simultaneously, because the ultrasonic wave that utilizes Packer for blocking water to be encapsulated in each water filling layer is surveyed water flow regulator and is linked in sequence together by the metal water injection pipe, be installed in the ultrasonic communication unit that communicates each other on the metal water injection pipe quantitatively without limits, thereby ultrasonic wave is surveyed the quantity of water flow regulator and water filling layer also without any restriction.So the degree of depth of water injection well, gradient without any restriction, are applicable to all types of water injection wells, significantly widen its scope of application.
The ultrasonic communication unit is the communication equipment that two-way reception sends, and belongs to the half-duplex mode of operation.Ultrasonic communication unit on the metal medium information that can transmit and receive data, but the same time can only have a ultrasonic communication unit to carry out transmit operation.
The setting of communication code is flexible, and the data message content that it is set is that the number (being transmitting time) that sends, receives with ultrasonic wave is corresponding.Its establishing method is: 1, different ultrasonic wave can be sent, receives the corresponding different numeral of number, can data information between the communication equipment, as temperature, pressure, flow etc.; 2, different ultrasonic wave can be sent, receives number corresponding different control command or status word, the ultrasonic communication unit is sent to the terminal actuating equipment with control command, finish different operation control, ultrasonic communication unit return state word after complete, display operation implementation status.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of structural representation that ultrasonic wave of the present invention is surveyed water flow regulator.
Fig. 2 is a kind of on-the-spot application state schematic diagram of installing of the present invention.
Fig. 3 is the ultrasonic communication unit communication principle schematic among Fig. 1.
Fig. 4 is emission, the reception waveform schematic diagram of ultrasonic communication unit.
Fig. 5 is a kind of structural representation of the ultrasonic communication unit among Fig. 1.
Sequence number explanation among the figure: 1 body, 2 batteries, 3 regulate water nozzle, 4 micro machines, 5 ultrasonic flow sensors, 6 survey regulation and control system unit, 7 pressure sensors, 8 temperature pick ups, 9 underground ultrasonic wave communication unit, ultrasonic communication unit, 10 ground, 11 sleeve pipes, 12 metal water injection pipes, 13 centralizers, 14 Packer for blocking water, 15 ultrasonic wave are surveyed water flow regulator, 16 ball seats, 17 screen casings, 18 plugs, 19 water filling layers, the transmitted waveform of 20 ultrasonic communication unit, the reception waveform of 21 ultrasonic communication unit, 22 ultrasonic transducers, 23 driver elements, 24 coding processing unit, 25 data bus interfaces, 26 filter units, 27 signal amplification units.
The specific embodiment
Describe concrete structure of the present invention in detail according to Fig. 1～5.This ultrasonic measured and controlled water distributing device is improved on the basis of existing layering decreasing water distribution method, and the water dispensing apparatus that has fundamentally solved its existence can only send instruction from ground to the down-hole, can't two-way communication etc. problem.It can be installed at the scene as shown in Figure 2 and use the water injection well that a plurality of water filling layers 19 are arranged.The quantity of water filling layer 19 should be selected according to actual needs.This device comprises the sleeve pipe 11 that is provided with a plurality of water filling layers 19, and the be linked in sequence centralizer 13 together, the ultrasonic wave that utilizes Packer for blocking water 14 to be encapsulated in each water filling layer 19 of metal water injection pipe 12 that pass through that is assembled in the sleeve pipe 11 surveyed water flow regulator 15 and parts such as ball seat 16, screen casing 17 and plug 18.Wherein connecting the ultrasonic wave survey water flow regulator 15 (adopting the structure as Fig. 1) that is encapsulated in the sleeve pipe 11 by metal water injection pipe 12 mainly comprises: two ends are provided with the annular seal space body of joint, are encapsulated in the interior battery 2 of body annular seal space, underground ultrasonic wave communication unit 9, survey the parts such as adjusting water nozzle 3 that regulation and control are made unit 6, ultrasonic flow sensor 5, pressure sensor 7, temperature pick up 8 and micro machine 4 and adjusted water injection rate.All electric components all are sealed in body 1 annular seal space, and micro machine 4 is connected with adjusting water nozzle 3 by sealing device.Each is arranged on the underground ultrasonic wave communication unit 9 that is connected with survey regulation and control system unit 6 in body 1 annular seal space, utilize metal water injection pipe 12 respectively be arranged on the ultrasonic wave code communications that ground ultrasonic communication unit 10 adopts technology maturations each other, with the data information transfer that realizes that underground ultrasonic wave communication unit 9 and ultrasonic communication unit, ground 10 are mutual.Water nozzles 3 are regulated in micro machines 4 drivings that underground ultrasonic wave communication unit 9 passes through to survey in the system unit 6 control ultrasonic wave survey water flow regulators 15, finish the adjusting of the water injection rate of each water filling layer 19 automatically.Surveying regulation and control system unit 6 is connected with ultrasonic flow sensor 5, pressure sensor 7, temperature pick up 8 and the adjusting water nozzle 3 that micro machine 4 drives respectively.Survey regulation and control system unit 6 and adopt common circuit, the control loop that it mainly is made up of single-chip microcomputer, timing circuit, analog signal processing circuit, drive circuit.The control loop that each underground ultrasonic wave communication unit 9 and ultrasonic communication unit, ground 10 mainly are made up of ultrasonic transducer 22, driver element 23, signal amplification unit 27, filter unit 26, coding processing unit 24 and data bus interface 25, adopt the half-duplex mode of operation to communicate, each ultrasonic communication unit can send, receiving data information, and can only have a ultrasonic communication unit to carry out the transmission task at one time.
Further describe the step of layering water distribution of the present invention below in conjunction with embodiment:
1, as shown in Figure 1, the ultrasonic wave that utilizes Packer for blocking water 14 to be encapsulated in each water filling layer 19 is surveyed water flow regulator 15 usefulness metal water injection pipes 12 connect, be assembled in the sleeve pipe 11.
2, injection allocation is prepared, and opens the water filling gate, toward 12 water fillings of metal water injection pipe.Utilize Packer for blocking water 14 that each water filling layer is separated, well head is suppressed Packer for blocking water 14 is set.
3, survey water flow regulator 15 with ultrasonic communication unit, ground 10 to the ultrasonic wave of underground water-injection layer 19 and transmit water filling instruction and target water injection rate.The underground ultrasonic wave communication unit 9 that ultrasonic wave is surveyed in the water flow regulator 15 receives water filling instruction and target water injection rate, and sends survey regulation and control system unit 6 to.Survey regulation and control system unit 6 and send pulse signal respectively to a pair of ultrasonic flow sensor 5 that distributes in opposite directions, measure the time difference of time and tide, the principle formula of measuring flow according to the ultrasonic wave time difference method obtains real-time water injection rate.Survey the temperature value of system unit 6 reading temperature sensors 8 injection flow is revised, after the contrast of target water injection rate, control micro machine 4 drives adjusting water nozzle 3 and regulates water injection rates.When water injection rate equates with the target water injection rate, stop to regulate.The status information of surveying after regulation and control system unit 6 will be regulated is sent to ultrasonic communication unit, ground 10 by underground ultrasonic wave communication unit 9, and the staff checks the water distribution situation.As stated above, successively each water filling layer is carried out water distribution and regulate, finish up to the water filling layer water distribution of required injection allocation regulated.
Survey the numerical value that regulation and control system unit 6 reads pressure sensor 7 and temperature pick up 8, gaging pressure, temperature, and the result is sent to ultrasonic communication unit, ground 10 by underground ultrasonic wave communication unit 9, for the staff read, record.As stated above, can carry out measuring operation respectively to each water filling layer.
The survey regulation and control system unit 6 that ultrasonic wave is surveyed in the water flow regulator 15 reads analog signal from ultrasonic flow sensor 5, pressure sensor 7 and temperature pick up 8, obtains information such as corresponding flow, pressure, temperature after treatment.Survey regulation and control system unit 6 and transmit data each other with underground ultrasonic wave communication unit 9, regulation and control system unit 6 is surveyed to underground ultrasonic wave communication unit 9 transmission execution results to surveying regulation and control system unit 6 transfer instructions and target water injection rate in underground ultrasonic wave communication unit 9.Survey regulation and control system unit 6 and can also drive micro machine 4, drive adjusting water nozzle 3 and regulate water injection rate.Survey the control loop that regulation and control system unit 6 mainly is made up of single-chip microcomputer, timing circuit, analog signal processing circuit, drive circuit etc.Single-chip microcomputer can adopt the multifunctional single-chip of C8051F series, as C8051F410, and functions such as ADC, DAC, comparator and iic bus that this single-chip microcomputer is inner integrated.Timing circuit can adopt the TDC-GP2 generalized time to digital quantizer, and the resolution ratio of this chip has effectively improved accuracy of timekeeping up to 50ps, reduces measure error.The amplifying circuit that analog signal processing circuit can be made up of operational amplifier amplifies processing to small and weak signal.Drive circuit can be used for driving micro machine 4 or send pulse signal to ultrasonic flow sensor 5.
The operating principle of ultrasonic communication unit as shown in Figure 3, Figure 4.Ground, underground ultrasonic wave communication unit 10,9 are housed on the surface of metal water injection pipe 12.Any one ultrasonic communication unit 10,9 on metal water injection pipe 12, for example ground ultrasonic communication unit 10 sends one through the ultrasonic wave waveform behind the coding, arrive underground ultrasonic wave communication unit 9 by metal water injection pipe 12, underground ultrasonic wave communication unit 9 receives the ultrasonic wave waveform, reads the information content after identical code identification.Execute according to the information content and will finish the result after the operation and return to ultrasonic communication unit, ground 10 with said method.The ultrasonic communication unit is the half-duplex mode of operation, and each ultrasonic communication unit can send, receiving data information, but the same time can only have a ultrasonic communication unit to carry out the transmission task.
Before the ultrasonic communication unit sends data message, at first detect and have or not other ultrasonic communication unit to transmit data taking metal water injection pipe 12 on the metal water injection pipe 12, suspend if metal water injection pipe 12 is occupied and send.If do not have occupiedly, then data message is converted to acoustic signals and is sent to other ultrasonic communication unit by metal water injection pipe 12.The information order that the ultrasonic communication unit transmits: first transfer address sign indicating number, transmit the information content again.Communication target is searched by address code in address code unique identification ultrasonic communication unit.The information content can be instruction or data.The address code and the information content all are through encoding.
The establishing method of coding is the data message that the ultrasonic wave waveform (being the ultrasonic wave of various durations) of different numbers is corresponding different.For example digital " 0 " is represented in the transmitted waveform 20 of ultrasonic communication unit, and after the reception waveform 21 of ultrasonic communication unit handles by identical coding, identified the content that the ultrasonic communication unit sends and be " 0 ".
The effect of the ultrasonic transducer 22 of ultrasonic communication unit is that the signal of telecommunication is converted to acoustic signals and acoustic signals is converted to the signal of telecommunication.When being in process of transmitting, coding processing unit 24 sends address code or information content corresponding codes to driver element 23 with the form of pulse, driver element 23 is converted to the high level pulse signal with the low level pulse signal, drives ultrasonic transducer 22 propagate ultrasound waves signal in metal water injection pipe 12.When being in receiving course, ultrasonic transducer 22 induces ultrasonic signal and is converted to faint pulse electrical signal from metal water injection pipe 12, filter unit 26 is sent in the signal amplification unit 27 pulse electrical signal amplification that this is faint, filter unit 26 filtering interfering noises, obtain the effective impulse signal of ultrasonic transducer centre frequency, the effective impulse signal of 24 pairs of filter units of coding processing unit, 26 outputs compares counting identification, and be the corresponding address sign indicating number or the information content with the code conversion that identifies, be transferred to external equipment by data bus interface 25.
Survey in the water flow regulator 15 at the underground ultrasonic ripple, underground ultrasonic wave communication unit 9 interconnects with survey regulation and control system unit 6, regulation and control system unit 6 is surveyed to underground ultrasonic wave communication unit 9 transmission execution results to surveying regulation and control system unit 6 transfer instructions and target water injection rate in underground ultrasonic wave communication unit 9.On ground, ultrasonic communication unit 10, ground interconnects by data bus interface 25 and computer, instruction that computer will be carried out and target water injection rate are transferred to ultrasonic communication unit, ground 10 by data bus interface 25, ultrasonic communication unit, ground 10 is sent to information the underground ultrasonic ripple again and surveys water flow regulator 15, when being finished, ultrasonic communication unit, ground 10 receives execution result and sends the result to computer by data bus interface 25 and reads.
The principle that ultrasonic wave is surveyed water flow regulator 15 accurate water distributions is: ultrasonic flow sensor 5 is housed in the annular seal space of body 1, utilizes the ultrasonic wave time difference method to measure flow.The time difference method principle is to utilize a pair of ultrasonic flow sensor 5 alternately to receive and dispatch ultrasonic wave in opposite directions, calculates the flow velocity of medium by observation ultrasonic wave propagation time difference of following current and adverse current in medium, when caliber one regularly, then outflow (being water injection rate).Measure the time difference of following current, adverse current and adopt the TDC-GP2 generalized time to digital quantizer, the resolution ratio of TDC-GP2 has improved certainty of measurement up to 50ps, reduces error.Because sound wave is when water transmission, the velocity of sound under the different temperatures is different, so need serviceability temperature sensor 8 to measure temperature with the modified flow rate value.After using ultrasonic flow sensor 5 to measure accurate flow, surveying regulation and control system unit 6 compares measured value and target water injection rate, both survey 6 driving micro machines, 4 fine settings of regulation and control system unit and regulate water nozzle 3 not simultaneously, and survey regulation and control system unit 6, fine setting back re-uses ultrasonic flow sensor 5 and measures flow.So circulation, the flow value that uses ultrasonic flow sensor 5 to measure in regulation and control system unit 6 is identical with the target water injection rate up to surveying, and stops measuring and adjusting.After use a period of time, change, survey regulation and control system unit 6 meeting periodic measurement water injection rates, find that water injection rate changes the back and carries out adjustment process, make water injection rate precise and stable on the target water injection rate owing to reasons such as pressure, dirt cause water injection rate.
Claims (3)
1. ultrasonic measured and controlled water distributing device, comprise the sleeve pipe that is provided with a plurality of water filling layers, be assembled in and pass through be linked in sequence together centralizer of metal water injection pipe in the described sleeve pipe, the ultrasonic wave that utilizes Packer for blocking water to be encapsulated in each described water filling layer is surveyed water flow regulator and ball seat, screen casing and plug, it is characterized in that: connect the described ultrasonic wave that is encapsulated in the described sleeve pipe by described metal water injection pipe and survey and be provided with in the water flow regulator body annular seal space and survey regulation and control and make the underground ultrasonic wave communication unit that the unit is connected, described survey regulation and control system unit respectively with ultrasonic flow sensor, pressure sensor, temperature pick up is connected with the adjusting water nozzle that micro machine drives, the described metal water injection pipe of each described underground ultrasonic wave communication unit by using respectively be arranged on ground ultrasonic communication unit and adopt the ultrasonic wave code communication each other, realize the data information transfer between described underground ultrasonic wave communication unit and ultrasonic communication unit, ground, the described micro machine of surveying in the water flow regulator by the described ultrasonic wave of described survey regulation and control system unit controls drives described adjusting water nozzle, finishes the adjusting of the water injection rate of each described water filling layer automatically.
2. ultrasonic measured and controlled water distributing device according to claim 1 is characterized in that: the control loop that described survey regulation and control system unit mainly is made up of single-chip microcomputer, timing circuit, analog signal processing circuit, drive circuit.
3. ultrasonic measured and controlled water distributing device according to claim 1, it is characterized in that: the control loop that each described underground ultrasonic wave communication unit and ultrasonic communication unit, ground mainly are made up of ultrasonic transducer, driver element, signal amplification unit, filter unit, coding processing unit and data bus interface, adopt the half-duplex mode of operation to communicate, each described ultrasonic communication unit can send, receiving data information, and can only have a described ultrasonic communication unit to carry out the transmission task at one time.
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| CN102839954A (en) * | 2011-06-24 | 2012-12-26 | 中国石油化工股份有限公司 | Method for achieving separated layer water distribution by pressure pulse |
| CN102853547A (en) * | 2012-08-17 | 2013-01-02 | 苏州启智机电技术有限公司 | Gas water heater with ultrasonic controller |
| CN103362486A (en) * | 2012-04-05 | 2013-10-23 | 中国石油天然气股份有限公司 | Digital underground layering water injection testing and adjusting process pipe column and operation method thereof |
| CN103993870A (en) * | 2013-02-19 | 2014-08-20 | 大庆国电海天科技有限公司 | Layer-by-layer detection method for parameters under oil field oil-water well |
| CN104481513A (en) * | 2014-11-12 | 2015-04-01 | 中国石油天然气股份有限公司 | Monitoring apparatus and transmission apparatus of high-temperature production well pump temperatures and pressures, and system |
| CN105822291A (en) * | 2016-03-17 | 2016-08-03 | 北京金科龙石油技术开发有限公司 | Water injection well multistage water distributor sensor data communication network building method and structure |
| CN106089186A (en) * | 2016-08-21 | 2016-11-09 | 中国石油化工股份有限公司 | Subsection water injection well well head and shaft bottom signal wireless transmitter and radio transmitting method |
| CN107304669A (en) * | 2016-04-15 | 2017-10-31 | 贵州航天凯山石油仪器有限公司 | The improved method and intelligent watering device of a kind of injection well downhole flow regulator |
| CN110984927A (en) * | 2019-12-11 | 2020-04-10 | 东北石油大学 | From wireless water injection mandrel of electricity generation formula intelligence |
| CN112145138A (en) * | 2020-09-29 | 2020-12-29 | 大庆友声科技有限公司 | Water injection well wellhead underwater sound transmitting and receiving device and communication method |
| CN113323639A (en) * | 2021-06-04 | 2021-08-31 | 西安洛科电子科技股份有限公司 | Infrasonic wave regulation and control module, ground control device and underground intelligent water distributor |
| CN113389542A (en) * | 2021-06-08 | 2021-09-14 | 成都多贝石油工程技术有限公司 | Novel stratified water injection pulse generation system |
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Application publication date: 20101027 |