CN202628074U - Oilfield petroleum flux measurement system with preprocessing function - Google Patents
Oilfield petroleum flux measurement system with preprocessing function Download PDFInfo
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- CN202628074U CN202628074U CN 201220337119 CN201220337119U CN202628074U CN 202628074 U CN202628074 U CN 202628074U CN 201220337119 CN201220337119 CN 201220337119 CN 201220337119 U CN201220337119 U CN 201220337119U CN 202628074 U CN202628074 U CN 202628074U
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Abstract
The utility model discloses an oilfield petroleum flux measurement system with a preprocessing function, which is characterized by mainly comprising a power circuit, a time-to-digital conversion chip, a single chip microcomputer, a memorizer, a signal processing circuit and an analog switch circuit, wherein the time-to-digital conversion chip, the single chip microcomputer, the memorizer, the signal processing circuit and the analog switch circuit are connected with the power circuit; the time-to-digital conversion chip, the single chip microcomputer, the signal processing circuit and the analog switch circuit are interconnected through a bus; and the analog switch circuit is also connected with an ultrasonic sensor 1 and an ultrasonic sensor 2. The oilfield petroleum flux measurement system with the preprocessing function has a favorable measurement effect and higher measurement precision and stability.
Description
Technical field
The utility model relates to the oil monitoring, specifically is meant to possess pretreated oil field petroleum streams system for measuring quantity.
Background technology
Along with China's rapid economy development, 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, makes 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 long oil field of exploitation time of east and the Northeast particularly, oil well is carried out secondary recovery, to improve oil and gas production or the like.And, be to be widely used now, and the higher a kind of method of efficient toward underground water-injection for the secondary recovery of oil well.Now the oil field to water injection technology require increasingly highly, the laminated distributor under well water filling was proposed again in recent years.To the monitoring of laminated distributor under well water injection parameter, more and more cause the attention of oil field relevant departments.Therefore be badly in need of the instrument of laminated distributor under well water injection parameter monitoring now, based on this present situation, this paper has designed one and has overlapped the circuit that detects flow, temperature.
The proposition of design philosophy: the flow meter that uses on the oil field at present all is a memory-type, and its kind is a lot, comprises suspended body flowmeter, electromagnetic flowmeter, turbine flowmeter, excusing from death ripple flow meter etc.Because the principle of design and frame for movement is different, these flow meters all 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 now more and more widely we can say the every field that is penetrated into industrial and agricultural production.Along with material industry and development of integrated circuits, the cost performance of single-chip microcomputer is increasingly high, selects MSP430F2274 to we can say not only economy but also material benefit as the process chip of data on flows.2274 processing speed and data form satisfy the technical requirements of parameter measurement fully.Design selected GP2 and be the special-purpose measured chip of ultrasonic wave principle flow meter, the internal construction of chip just is based on the principle design that the ultrasonic wave time difference method is measured 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 the small number of peripheral circuit, just can realize the monitoring function of flow.
The utility model content
The purpose of the utility model is to provide has good measurement effect, than high measurement accuracy and stability, possesses pretreated oil field petroleum streams system for measuring quantity.
The implementation of the utility model is following: 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 constitutes, said time figure conversion chip, single-chip microcomputer, signal processing circuit, analog switching circuit all pass through bus interconnection; Said analog switching circuit also is connected with ultrasonic sensor 1 and ultrasonic sensor 2, and said analog switching circuit transforms chip through pre-process circuit with bus and time figure and is connected.
Said pre-process circuit mainly comprises amplifying circuit and comparator shaping circuit; Said amplifying circuit mainly is made up of the two-stage amplifier U2 of one-level amplifier U1 that connects analog switching circuit and connection one-level amplifier U1; Said comparator shaping circuit comprises that the high-speed comparator that connects second amplifying circuit constitutes, and the output of said high-speed comparator transforms chip with time figure and is connected.
Said bus also is connected with the data readback circuit, and said data readback circuit is connected with single-chip microcomputer through bus, and said data readback circuit comprises the MAX3232 chip, and said MAX3232 chip is also established and is connected with the RS232 interface.
Said time figure transforms chip and also is connected with temperature pick up.
It is the single-chip microcomputer of MSP430F2274 that said single-chip microcomputer adopts model.
The model that said time figure transforms chip is the time figure conversion chip of TDC-GP2.
MSP430F2274 is 16 higher singlechip chips of a high-performance low-power-consumption, sexual valence that TI company 2006 releases, and MSP430F2274 has inherited traditional characteristics of TI single-chip microcomputer: super low-power consumption, volume are littler, performance better, more is prone to use.16 reduced instruction set computer CPU that MSP430F2274 is inner are through the 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 have an advanced person's CPU to cooperate analog-and digital-ancillary equipment, make MSP430 can be used to handle mixed signal with standard package storage impression.Have numerous internal resources, thereby the structure that can be system provides very big facility.TDC-GP2 is that German ACAM company is that the new time figure of releasing behind the TDC-GP1 of another money transforms chip; Its high accuracy and compact package make it become the desirable device of low-cost industrial application design; TDC-GP2 has the high-speed pulse generator; Stop signal enables, functions such as temperature survey and clock control, and 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 time measurement accuracy reach the ps level.Abbreviate GP2 as in order to describe TDC-GP2 respectively, MSP430F2274 abbreviates 2274 as.
Whole system designs peripheral circuit around MSP430F2274 and GP2.2274 mainly are used for doing system control and data, and it is poor that GP2 mainly is used for acquisition time, also is the core of whole system data acquisition.This circuit is that system is designed to memory-type, promptly earlier installs to whole system to be put on the skeleton in the measured well, and survey data temporarily is stored in the memory, waits to measure and carries out data readback to system improving to ground through the data readback circuit again after accomplishing.The measurement of GP2 time parameter of realization and flow, temperature correlation under 2274 control in measuring process, and be stored in the GP2 internal register, handle accordingly and store after reading by 2274.After instrument is thus lifted to ground, system after receiving computer commands with in the memory data send computer to through the MAX3232 chip and handle.After system powered on, the program that is stored among the 2274 inner ROM was directed into 2274 internal operations.When 2274 accomplish initialization to self and GP2 and be provided with after; At first give definite signal of analog switching circuit; Make it to be in a definite state, so just can confirm the reiving/transmitting state of two ultrasonic sensors, promptly; The reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, just confirming to measure downstream still is to measure against the current.2274 send order to GP2 afterwards, the FIRE pin through GP2 transmits, and when excitation being provided for ultrasonic sensor 1 and ultrasonic sensor 2, to GP2 START is provided signal simultaneously; And the signal that ultrasonic sensor 1 and ultrasonic sensor 2 receive is delivered to GP2 as the STOP signal after through the two poles of the earth amplifying circuit and filter circuit, waveform shaping circuit, and GP2 just can calculate the propagation time of ultrasonic wave in fluid like this.Then 2274 change analog switches the channel switch state, promptly change the reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, carry out one-shot measurement again, can obtain a propagation time again.According to these two time parameters, utilize time difference method principle formula just can calculate the flow of fluid in the tubing string.2274 result of calculations deposit in the outside memory.After measuring completion, mention ground to circuit, utilize data wire to be connected with PC, be sent to PC to the data that record and carry out the water flooding curve drafting, and make further seperated layer water injection profile analysis.
Because the measurement of whole system is carried out in the down-hole, and data are not uploaded in measuring process.The post-processed of data and the drafting of water flooding curve are to measure after the completion, and data readback is carried out later on to PC.So the playback to data also must be taken into account.Therefore the special data readback circuit that increases.
The design of pre-process circuit: because the signal that receives 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 through the analog switch gating amplifies through one-level amplifier U1; Enlargement range is about 20dB, afterwards the signal after amplifying is carried out bandpass filtering, after the filtering signal is passed through two-stage amplifier U2; Carrying out secondary amplifies; Current amplitude of amplifying also is about 20dB, and promptly twice total gain amplifier is about 40dB, and the signal after secondary amplifies is delivered to GP2 as the STOP signal after the high-speed comparator shaping that connects second amplifying circuit.Because what GP2 measured is the time difference between commencing signal and the end signal, what require that rising edge tries one's best is steep, so must use high-speed comparator.
The advantage of the utility model is: native system possesses good measurement effect, and the certainty of measurement of system has all reached designing requirement in advance with stability.Thereby proved absolutely the feasibility of this system, exploitation applied for it, the commercialization instrument provides necessary foundation.In addition, this cover system can also be applied to other industrial circle, can make the control measurement flow device foremost of industrial automation.The design of this measuring circuit system is for the certain reference value of being designed with of other flowrate measuring tool.
Description of drawings
Fig. 1 is the utility model system architecture sketch map.
Fig. 2 is the pre-process circuit sketch map of the utility model.
The specific embodiment
Embodiment one
Like Fig. 1, shown in 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 constitutes, said time figure conversion chip, single-chip microcomputer, signal processing circuit, analog switching circuit all pass through bus interconnection; Said analog switching circuit also is connected with ultrasonic sensor 1 and ultrasonic sensor 2, and said analog switching circuit transforms chip through pre-process circuit with bus and time figure and is connected.
Said pre-process circuit mainly comprises amplifying circuit and comparator shaping circuit; Said amplifying circuit mainly is made up of the two-stage amplifier U2 of one-level amplifier U1 that connects analog switching circuit and connection one-level amplifier U1; Said comparator shaping circuit comprises that the high-speed comparator that connects second amplifying circuit constitutes, and the output of said high-speed comparator transforms chip with time figure and is connected.
Said bus also is connected with the data readback circuit, and said data readback circuit is connected with single-chip microcomputer through bus, and said data readback circuit comprises the MAX3232 chip, and said MAX3232 chip is also established and is connected with the RS232 interface.
Said time figure transforms chip and also is connected with temperature pick up.
It is the single-chip microcomputer of MSP430F2274 that said single-chip microcomputer adopts model.
The model that said time figure transforms chip is the time figure conversion chip of TDC-GP2.
MSP430F2274 is 16 higher singlechip chips of a high-performance low-power-consumption, sexual valence that TI company 2006 releases, and MSP430F2274 has inherited traditional characteristics of TI single-chip microcomputer: super low-power consumption, volume are littler, performance better, more is prone to use.16 reduced instruction set computer CPU that MSP430F2274 is inner are through the 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 have an advanced person's CPU to cooperate analog-and digital-ancillary equipment, make MSP430 can be used to handle mixed signal with standard package storage impression.Have numerous internal resources, thereby the structure that can be system provides very big facility.TDC-GP2 is that German ACAM company is that the new time figure of releasing behind the TDC-GP1 of another money transforms chip; Its high accuracy and compact package make it become the desirable device of low-cost industrial application design; TDC-GP2 has the high-speed pulse generator; Stop signal enables, functions such as temperature survey and clock control, and 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 time measurement accuracy reach the ps level.Abbreviate GP2 as in order to describe TDC-GP2 respectively, MSP430F2274 abbreviates 2274 as.
Whole system designs peripheral circuit around MSP430F2274 and GP2.2274 mainly are used for doing system control and data, and it is poor that GP2 mainly is used for acquisition time, also is the core of whole system data acquisition.This circuit is that system is designed to memory-type, promptly earlier installs to whole system to be put on the skeleton in the measured well, and survey data temporarily is stored in the memory, waits to measure and carries out data readback to system improving to ground through the data readback circuit again after accomplishing.The measurement of GP2 time parameter of realization and flow, temperature correlation under 2274 control in measuring process, and be stored in the GP2 internal register, handle accordingly and store after reading by 2274.After instrument is thus lifted to ground, system after receiving computer commands with in the memory data send computer to through the MAX3232 chip and handle.After system powered on, the program that is stored among the 2274 inner ROM was directed into 2274 internal operations.When 2274 accomplish initialization to self and GP2 and be provided with after; At first give definite signal of analog switching circuit; Make it to be in a definite state, so just can confirm the reiving/transmitting state of two ultrasonic sensors, promptly; The reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, just confirming to measure downstream still is to measure against the current.2274 send order to GP2 afterwards, the FIRE pin through GP2 transmits, and when excitation being provided for ultrasonic sensor 1 and ultrasonic sensor 2, to GP2 START is provided signal simultaneously; And the signal that ultrasonic sensor 1 and ultrasonic sensor 2 receive is delivered to GP2 as the STOP signal after through the two poles of the earth amplifying circuit and filter circuit, waveform shaping circuit, and GP2 just can calculate the propagation time of ultrasonic wave in fluid like this.Then 2274 change analog switches the channel switch state, promptly change the reiving/transmitting state of ultrasonic sensor 1 and ultrasonic sensor 2, carry out one-shot measurement again, can obtain a propagation time again.According to these two time parameters, utilize time difference method principle formula just can calculate the flow of fluid in the tubing string.2274 result of calculations deposit in the outside memory.After measuring completion, mention ground to circuit, utilize data wire to be connected with PC, be sent to PC to the data that record and carry out the water flooding curve drafting, and make further seperated layer water injection profile analysis.
Because the measurement of whole system is carried out in the down-hole, and data are not uploaded in measuring process.The post-processed of data and the drafting of water flooding curve are to measure after the completion, and data readback is carried out later on to PC.So the playback to data also must be taken into account.Therefore the special data readback circuit that increases.
The design of pre-process circuit: because the signal that receives 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 through the analog switch gating amplifies through one-level amplifier U1; Enlargement range is about 20dB, afterwards the signal after amplifying is carried out bandpass filtering, after the filtering signal is passed through two-stage amplifier U2; Carrying out secondary amplifies; Current amplitude of amplifying also is about 20dB, and promptly twice total gain amplifier is about 40dB, and the signal after secondary amplifies is delivered to GP2 as the STOP signal after the high-speed comparator shaping that connects second amplifying circuit.Because what GP2 measured is the time difference between commencing signal and the end signal, what require that rising edge tries one's best is steep, so must use high-speed comparator.
As stated, then can well realize the utility model.
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 constitutes, said time figure conversion chip, single-chip microcomputer, signal processing circuit, analog switching circuit all pass through bus interconnection; Said analog switching circuit also is connected with ultrasonic sensor 1 and ultrasonic sensor 2, and said analog switching circuit transforms chip through 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: said pre-process circuit mainly comprises amplifying circuit and comparator shaping circuit; Said amplifying circuit mainly is made up of the two-stage amplifier U2 of one-level amplifier U1 that connects analog switching circuit and connection one-level amplifier U1; Said comparator shaping circuit comprises that the high-speed comparator that connects second amplifying circuit constitutes, and the output of said 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: said bus also is connected with the data readback circuit; Said data readback circuit is connected with single-chip microcomputer through bus; Said data readback circuit comprises the MAX3232 chip, and said MAX3232 chip is also established and is connected with the RS232 interface.
4. describedly possess pretreated oil field petroleum streams system for measuring quantity according to claim 1 or 2 or 3, it is characterized in that: said time figure transforms chip and also is 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: it is the single-chip microcomputer of MSP430F2274 that said single-chip microcomputer adopts model.
6. according to claim 5 possess pretreated oil field petroleum streams system for measuring quantity, it is characterized in that: the model that said time figure transforms chip is that the time figure of TDC-GP2 transforms chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337119 CN202628074U (en) | 2012-07-12 | 2012-07-12 | Oilfield petroleum flux measurement system with preprocessing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337119 CN202628074U (en) | 2012-07-12 | 2012-07-12 | Oilfield petroleum flux measurement system with preprocessing function |
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| CN202628074U true CN202628074U (en) | 2012-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541716A (en) * | 2012-07-12 | 2014-01-29 | 成都科盛石油科技有限公司 | Oil field oil flow measuring system with pre-processing function |
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- 2012-07-12 CN CN 201220337119 patent/CN202628074U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541716A (en) * | 2012-07-12 | 2014-01-29 | 成都科盛石油科技有限公司 | Oil field oil flow measuring system with pre-processing function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130712 |