CN103541716A - Oil field oil flow measuring system with pre-processing function - Google Patents
Oil field oil flow measuring system with pre-processing function Download PDFInfo
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- CN103541716A CN103541716A CN201210240866.0A CN201210240866A CN103541716A CN 103541716 A CN103541716 A CN 103541716A CN 201210240866 A CN201210240866 A CN 201210240866A CN 103541716 A CN103541716 A CN 103541716A
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Abstract
The invention discloses an oil field oil flow measuring system with a pre-processing function. The oil field oil flow measuring system is characterized in that the system is mainly composed of a power circuit, a time digital conversion chip, a single chip microcomputer, a memory, a signal processing circuit and an analog switch circuit, wherein the time digital conversion chip, the single chip microcomputer, the memory, the signal processing circuit and the analog switch circuit are connected with the power circuit, and the time digital conversion chip, the single chip microcomputer, the signal processing circuit and the analog switch circuit are connected through a bus. The analog switch circuit is further connected with an ultrasonic sensor 1 and an ultrasonic sensor 2. The oil field oil flow measuring system has the advantages of being good in measuring effect, and high in measuring precision and stability.
Description
Technical field
The present invention relates to oil monitoring, specifically refer to and possess pretreated oil field petroleum streams system for measuring quantity.
Background technology
Along with the fast development of China's economy, increasing to the demand of oil, so the many oil fields of China multiple way of numerous and confused employing improves oil and gas production.For example: each elephant has all been set up the research institution of oneself, make full use of the talent in oil field self and the advantage of fund, the instrument that development oil drilling, well logging are badly in need of.Many oil fields are the longer oil field of recovery time of east and the Northeast particularly, oil well is carried out to secondary recovery, to improve oil and gas production etc.And for the secondary recovery of oil well, be to be widely used now toward underground water-injection, and a kind of higher method of efficiency.Oil field is more and more higher to the requirement of water injection technology now, proposes again in recent years laminated distributor under well water filling.Monitoring to laminated distributor under well water injection parameter, more and more causes the attention of oil field relevant departments.Therefore be badly in need of now the instrument of laminated distributor under well water injection parameter monitoring, based on this present situation, designed the circuit of a set of detection flow, temperature herein.
The proposition of design philosophy: the flow meter using on oil field is at present all memory-type, and its kind is a lot, comprises suspended body flowmeter, electromagnetic flowmeter, turbine flowmeter, excusing from death ripple flow meter etc.Due to the principle of design and the difference of frame for movement, these flow meters have some shortcomings of self, and its precision is not very high, comparatively speaking, ultrasonic flow is in respect of more significant advantage, and it has higher certainty of measurement, generally between 2% ~ 5%, and the precision of other flow meters is generally all on 5%, and the spoilage of frame for movement is also high a lot of than ultrasonic flowmeter.In addition, the application of integrated chip is now more and more extensive, can say the every field that has been penetrated into industrial and agricultural production.Along with the development of material industry and integrated circuit, the cost performance of single-chip microcomputer is more and more higher, selects MSP430F2274 can say not only economy but also material benefit as the process chip of data on flows.2274 processing speed and data processing form meet the technical requirements of parameter measurement completely.Designing selected GP2 is the measurement chip of ultrasonic wave principle flow meter special use, the principle design of the internal construction of chip based on ultrasonic wave time difference method measuring flow, and this chip has high certainty of measurement, thereby can guarantee the precision of final survey data.These two kinds of chip application to circuit, add a small amount of peripheral circuit, just can realize the monitoring function of flow.
Summary of the invention
The object of the present invention is to provide and there is good measurement effect, compared with high measurement accuracy and stability, possess pretreated oil field petroleum streams system for measuring quantity.
Implementation of the present invention is as follows: possess pretreated oil field petroleum streams system for measuring quantity, mainly by power circuit and is connected with power circuit, time figure transforms chip, single-chip microcomputer, memory, signal processing circuit, analog switching circuit and forms, described time figure conversion chip, single-chip microcomputer, signal processing circuit, analog switching circuit all pass through bus interconnection; Described analog switching circuit is also connected with ultrasonic sensor 1 and ultrasonic sensor 2, and described analog switching circuit transforms chip by pre-process circuit with bus and time figure and is connected.
Described pre-process circuit mainly comprises amplifying circuit and comparator shaping circuit, described amplifying circuit mainly consists of the one-level amplifier U1 of connecting analog on-off circuit and the two-stage amplifier U2 of connection one-level amplifier U1, described comparator shaping circuit comprises that the high-speed comparator that connects second amplifying circuit forms, and the output of described high-speed comparator transforms chip with time figure and is connected.
Described bus is also connected with data readback circuit, and described data readback circuit is connected with single-chip microcomputer by bus, and described data readback circuit comprises MAX3232 chip, and described MAX3232 chip is also established and is connected with RS232 interface.
Described time figure transforms chip and is also connected with temperature pick up.
Described single-chip microcomputer adopts the single-chip microcomputer that model is MSP430F2274.
The time figure that the model of described time figure conversion chip is TDC-GP2 transforms chip.
MSP430F2274 is 16 higher singlechip chips of a high-performance low-power-consumption, sexual valence that TI corporation in 2006 is released, and MSP430F2274 has inherited traditional feature of TI single-chip microcomputer: super low-power consumption, volume are less, performance better, more easily use.16 reduced instruction set computer CPU of MSP430F2274 inside are passed through to address bus and the data/address bus of Feng o neumann architecture, be connected to ancillary equipment and programmable clock system, in addition, owing to having an advanced CPU to coordinate to have the analog-and digital-ancillary equipment of standard package storage impression, make the MSP430 can be for the treatment of mixed signal.There is numerous internal resources, thereby the structure that can be system provides very large facility.TDC-GP2 is that German ACAM company is that the new time figure of another money of releasing after TDC-GP1 transforms chip, its high accuracy and compact package become the desirable device of low-cost industrial application design, TDC-GP2 has High speed pulse generator, stop signal enables, the function such as temperature survey and clock control, these special functional modules make it be particularly suitable for the application of ultrasonic flow and calorimetry aspect.It has two measurement categorys, can make the certainty of measurement of time reach ps level.In order to describe respectively TDC-GP2 referred to as GP2, MSP430F2274 is referred to as 2274.
Whole system designs peripheral circuit around MSP430F2274 and GP2.2274 are mainly used to do system controls and data processing, and it is poor that GP2 is mainly used to acquisition time, is also the core of whole system data acquisition.This circuit is that system is designed to memory-type, first whole system is installed on skeleton and is put in measured well, and survey data is temporarily stored in memory, waits after having measured and again system improving is carried out to data readback to ground by data readback circuit.The measurement of GP2 time parameter of realization and flow, temperature correlation under 2274 control in measuring process, and be stored in GP2 internal register, after reading by 2274, carry out corresponding processing and storage.Instrument is thus lifted to behind ground, system after the order that receives computer by memory data by MAX3232 chip, send computer to and process.After system powers on, the program in the ROM of 2274 inside of being stored in is directed enters 2274 internal operations.When 2274 complete the initialization of self and GP2 arranged after, first give definite signal of analog switching circuit, make it in a definite state, so just can determine the reiving/transmitting state of two ultrasonic sensors,, the reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, namely determines it is to measure downstream or measure against the current.2274 to GP2, send order afterwards, the FIRE pin by GP2 transmits, and when excitation being provided to ultrasonic sensor 1 and ultrasonic sensor 2, provides START signal to GP2 simultaneously; And the signal that ultrasonic sensor 1 and ultrasonic sensor 2 receive is delivered to GP2 as STOP signal after the two poles of the earth amplifying circuit and filter circuit, waveform shaping circuit, GP2 just can calculate the propagation time of ultrasonic wave in fluid like this.Then the channel switch state of 2274 change analog switches, changes the reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, then carries out one-shot measurement, can obtain again a propagation time.According to these two time parameters, utilize time difference method principle formula just can calculate the flow of fluid in tubing string.2274 result of calculations deposit in outside memory.After measurement completes, circuit is mentioned to ground, utilize data wire to be connected with PC, the data that record are sent to PC and carry out water flooding curve drafting, and make further seperated layer water injection profile analysis.
Because the measurement of whole system is carried out in down-hole, and data are not uploaded in measuring process.The post-processed of data and the drafting of water flooding curve are after having measured, and data readback is carried out to PC later.So also must take into account the playback of data.Therefore spy increases data readback circuit.
The design of pre-process circuit: because the signal receiving from ultrasonic sensor 1 and ultrasonic sensor 2 is very faint ultrasonic signal, and the STOP passage of GP2 has requirement to the identification of signal, so must amplify to received signal, filtering.Reception signal by analog switch gating amplifies through one-level amplifier U1, enlargement range is about 20dB, afterwards the signal after amplifying is carried out to bandpass filtering, after filtering, signal is passed through to two-stage amplifier U2, carry out secondary amplification, current amplitude of amplifying is also about 20dB, and twice total gain amplifier is about 40dB, after the high-speed comparator shaping of the signal after secondary amplifies through connecting second amplifying circuit, delivers to GP2 as STOP signal.What measure due to GP2 is the time difference between commencing signal and end signal, and what require that rising edge tries one's best is steep, so must use high-speed comparator.
The invention has the advantages that: native system possesses good measurement effect, the certainty of measurement of system and stability have all reached designing requirement in advance.Thereby absolutely proved the feasibility of this system, for it is applied, the exploitation of commercialization instrument provides necessary foundation.In addition, this cover system can also be applied to other industrial circle, the control that can make industrial automation measuring flow equipment foremost.The design of this measuring circuit system is for the certain reference value of being designed with of other flowrate measuring tool.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention.
Fig. 2 is pre-process circuit schematic diagram of the present invention.
The specific embodiment
Embodiment mono-
As shown in Figure 1, 2.
Possesses pretreated oil field petroleum streams system for measuring quantity, mainly by power circuit and is connected with power circuit, time figure transforms chip, single-chip microcomputer, memory, signal processing circuit, analog switching circuit and forms, described time figure conversion chip, single-chip microcomputer, signal processing circuit, analog switching circuit all pass through bus interconnection; Described analog switching circuit is also connected with ultrasonic sensor 1 and ultrasonic sensor 2, and described analog switching circuit transforms chip by pre-process circuit with bus and time figure and is connected.
Described pre-process circuit mainly comprises amplifying circuit and comparator shaping circuit, described amplifying circuit mainly consists of the one-level amplifier U1 of connecting analog on-off circuit and the two-stage amplifier U2 of connection one-level amplifier U1, described comparator shaping circuit comprises that the high-speed comparator that connects second amplifying circuit forms, and the output of described high-speed comparator transforms chip with time figure and is connected.
Described bus is also connected with data readback circuit, and described data readback circuit is connected with single-chip microcomputer by bus, and described data readback circuit comprises MAX3232 chip, and described MAX3232 chip is also established and is connected with RS232 interface.
Described time figure transforms chip and is also connected with temperature pick up.
Described single-chip microcomputer adopts the single-chip microcomputer that model is MSP430F2274.
The time figure that the model of described time figure conversion chip is TDC-GP2 transforms chip.
MSP430F2274 is 16 higher singlechip chips of a high-performance low-power-consumption, sexual valence that TI corporation in 2006 is released, and MSP430F2274 has inherited traditional feature of TI single-chip microcomputer: super low-power consumption, volume are less, performance better, more easily use.16 reduced instruction set computer CPU of MSP430F2274 inside are passed through to address bus and the data/address bus of Feng o neumann architecture, be connected to ancillary equipment and programmable clock system, in addition, owing to having an advanced CPU to coordinate to have the analog-and digital-ancillary equipment of standard package storage impression, make the MSP430 can be for the treatment of mixed signal.There is numerous internal resources, thereby the structure that can be system provides very large facility.TDC-GP2 is that German ACAM company is that the new time figure of another money of releasing after TDC-GP1 transforms chip, its high accuracy and compact package become the desirable device of low-cost industrial application design, TDC-GP2 has High speed pulse generator, stop signal enables, the function such as temperature survey and clock control, these special functional modules make it be particularly suitable for the application of ultrasonic flow and calorimetry aspect.It has two measurement categorys, can make the certainty of measurement of time reach ps level.In order to describe respectively TDC-GP2 referred to as GP2, MSP430F2274 is referred to as 2274.
Whole system designs peripheral circuit around MSP430F2274 and GP2.2274 are mainly used to do system controls and data processing, and it is poor that GP2 is mainly used to acquisition time, is also the core of whole system data acquisition.This circuit is that system is designed to memory-type, first whole system is installed on skeleton and is put in measured well, and survey data is temporarily stored in memory, waits after having measured and again system improving is carried out to data readback to ground by data readback circuit.The measurement of GP2 time parameter of realization and flow, temperature correlation under 2274 control in measuring process, and be stored in GP2 internal register, after reading by 2274, carry out corresponding processing and storage.Instrument is thus lifted to behind ground, system after the order that receives computer by memory data by MAX3232 chip, send computer to and process.After system powers on, the program in the ROM of 2274 inside of being stored in is directed enters 2274 internal operations.When 2274 complete the initialization of self and GP2 arranged after, first give definite signal of analog switching circuit, make it in a definite state, so just can determine the reiving/transmitting state of two ultrasonic sensors,, the reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, namely determines it is to measure downstream or measure against the current.2274 to GP2, send order afterwards, the FIRE pin by GP2 transmits, and when excitation being provided to ultrasonic sensor 1 and ultrasonic sensor 2, provides START signal to GP2 simultaneously; And the signal that ultrasonic sensor 1 and ultrasonic sensor 2 receive is delivered to GP2 as STOP signal after the two poles of the earth amplifying circuit and filter circuit, waveform shaping circuit, GP2 just can calculate the propagation time of ultrasonic wave in fluid like this.Then the channel switch state of 2274 change analog switches, changes the reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, then carries out one-shot measurement, can obtain again a propagation time.According to these two time parameters, utilize time difference method principle formula just can calculate the flow of fluid in tubing string.2274 result of calculations deposit in outside memory.After measurement completes, circuit is mentioned to ground, utilize data wire to be connected with PC, the data that record are sent to PC and carry out water flooding curve drafting, and make further seperated layer water injection profile analysis.
Because the measurement of whole system is carried out in down-hole, and data are not uploaded in measuring process.The post-processed of data and the drafting of water flooding curve are after having measured, and data readback is carried out to PC later.So also must take into account the playback of data.Therefore spy increases data readback circuit.
The design of pre-process circuit: because the signal receiving from ultrasonic sensor 1 and ultrasonic sensor 2 is very faint ultrasonic signal, and the STOP passage of GP2 has requirement to the identification of signal, so must amplify to received signal, filtering.Reception signal by analog switch gating amplifies through one-level amplifier U1, enlargement range is about 20dB, afterwards the signal after amplifying is carried out to bandpass filtering, after filtering, signal is passed through to two-stage amplifier U2, carry out secondary amplification, current amplitude of amplifying is also about 20dB, and twice total gain amplifier is about 40dB, after the high-speed comparator shaping of the signal after secondary amplifies through connecting second amplifying circuit, delivers to GP2 as STOP signal.What measure due to GP2 is the time difference between commencing signal and end signal, and what require that rising edge tries one's best is steep, so must use high-speed comparator.
As mentioned above, can well realize the present invention.
Claims (6)
1. possesses pretreated oil field petroleum streams system for measuring quantity, it is characterized in that: mainly by power circuit and is connected with power circuit, time figure transforms chip, single-chip microcomputer, memory, signal processing circuit, analog switching circuit and forms, described time figure conversion chip, single-chip microcomputer, signal processing circuit, analog switching circuit all pass through bus interconnection; Described analog switching circuit is also connected with ultrasonic sensor 1 and ultrasonic sensor 2, and described analog switching circuit transforms chip by pre-process circuit with bus and time figure and is connected.
2. according to claim 1 possess pretreated oil field petroleum streams system for measuring quantity, it is characterized in that: described pre-process circuit mainly comprises amplifying circuit and comparator shaping circuit, described amplifying circuit mainly consists of the one-level amplifier U1 of connecting analog on-off circuit and the two-stage amplifier U2 of connection one-level amplifier U1, described comparator shaping circuit comprises that the high-speed comparator that connects second amplifying circuit forms, and the output of described high-speed comparator transforms chip with time figure and is connected.
3. according to claim 1 possess pretreated oil field petroleum streams system for measuring quantity, it is characterized in that: described bus is also connected with data readback circuit, described data readback circuit is connected with single-chip microcomputer by bus, described data readback circuit comprises MAX3232 chip, and described MAX3232 chip is also established and is connected with RS232 interface.
4. according to possessing pretreated oil field petroleum streams system for measuring quantity described in claim 1 or 2 or 3, it is characterized in that: described time figure transforms chip and is also connected with temperature pick up.
5. according to claim 4 possess pretreated oil field petroleum streams system for measuring quantity, it is characterized in that: described single-chip microcomputer adopts the single-chip microcomputer that model is MSP430F2274.
6. according to claim 5 possess pretreated oil field petroleum streams system for measuring quantity, it is characterized in that: described time figure transforms the time figure that the model of chip is TDC-GP2 and transforms chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240866.0A CN103541716A (en) | 2012-07-12 | 2012-07-12 | Oil field oil flow measuring system with pre-processing function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210240866.0A CN103541716A (en) | 2012-07-12 | 2012-07-12 | Oil field oil flow measuring system with pre-processing function |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01193617A (en) * | 1987-09-30 | 1989-08-03 | Panametrics Inc | Differential correlation analyzer |
| US6796189B1 (en) * | 1999-06-24 | 2004-09-28 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic flowmeter having sequentially changed driving method |
| CN101886939A (en) * | 2010-06-10 | 2010-11-17 | 宁波大学 | Inhibition model and inhibition method for static drift of time difference ultrasonic flowmeter |
| WO2011061927A1 (en) * | 2009-11-19 | 2011-05-26 | パナソニック株式会社 | Ultrasonic flowmeter |
| CN102549394A (en) * | 2009-09-30 | 2012-07-04 | 松下电器产业株式会社 | Flow rate measuring device |
| CN202628074U (en) * | 2012-07-12 | 2012-12-26 | 成都科盛石油科技有限公司 | Oilfield petroleum flux measurement system with preprocessing function |
-
2012
- 2012-07-12 CN CN201210240866.0A patent/CN103541716A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01193617A (en) * | 1987-09-30 | 1989-08-03 | Panametrics Inc | Differential correlation analyzer |
| US6796189B1 (en) * | 1999-06-24 | 2004-09-28 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic flowmeter having sequentially changed driving method |
| CN102549394A (en) * | 2009-09-30 | 2012-07-04 | 松下电器产业株式会社 | Flow rate measuring device |
| WO2011061927A1 (en) * | 2009-11-19 | 2011-05-26 | パナソニック株式会社 | Ultrasonic flowmeter |
| CN101886939A (en) * | 2010-06-10 | 2010-11-17 | 宁波大学 | Inhibition model and inhibition method for static drift of time difference ultrasonic flowmeter |
| CN202628074U (en) * | 2012-07-12 | 2012-12-26 | 成都科盛石油科技有限公司 | Oilfield petroleum flux measurement system with preprocessing function |
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Application publication date: 20140129 |