CN104074504A - Natural gas open flow test remote data input system - Google Patents
Natural gas open flow test remote data input system Download PDFInfo
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- CN104074504A CN104074504A CN201410282558.3A CN201410282558A CN104074504A CN 104074504 A CN104074504 A CN 104074504A CN 201410282558 A CN201410282558 A CN 201410282558A CN 104074504 A CN104074504 A CN 104074504A
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- natural gas
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Abstract
The invention provides a natural gas open flow test remote data input system, which comprises a colleting unit, a conversion module and a processing module, wherein the collecting unit is arranged at a well mouth and is used for collecting signals; the conversion module is used for converting analog signals collected by the collecting unit into digital signals; the processing module is used for carrying out data monitoring and data analysis; the collecting unit is used for collecting data of the pressure, the temperature and the flow rate at an inlet and transmitting the collected signals to the conversion module; the conversion module converts the obtained analog signals into the digital signals and transmits the digital signals to the processing module; and the processing module carries out monitoring analysis and statistics on the obtained digital signals. The natural gas open flow test remote data input system has the advantages that the data input accuracy of a critical flow meter is high; the falsification condition is avoided; the accuracy and the reliability of the integral operation are ensured; and the operation risk is reduced.
Description
Technical field
The present invention relates to the critical flow prover test jobs of exploration of oil and gas field and development field, especially a kind of natural gas open flow test remote data input system.
Background technology
In oil and gas exploration and development process, it is main that gas well open flow asks the output of product test to measure main cubing, and in short period test, mainly take critical speed flowmeters as metering outfit.Adopt critical speed flowmeters metering output to have simple in structure, easy to manufacture, the features such as mounting, commissioning and maintenance is convenient, but, the admission life period of upstream temperature, pressure and wellhead temperature, pressure is poor, accuracy and the reliability of data recording are low, after measuring yield comparison with eliminator, find, in output metering, still there is some difference for both, because eliminator output is through strict calculating, by measuring software, accurately draw, therefore, the measuring accuracy that improves critical flow prover is very necessary.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of critical flow prover data recording accuracy high, the situation of having avoided practising fraud has ensured accuracy and the reliability of overall operation, has reduced the natural gas open flow test remote data input system of operating risk.
For achieving the above object, the present invention is by the following technical solutions: a kind of natural gas open flow test remote data input system, comprise that being arranged on well head is used for the collecting unit of collection signal, for the analog signal that collecting unit is collected, be converted to the modular converter of data signal, for carrying out the processing module of data monitoring and data analysis;
Described collecting unit carries out the collection of data to the pressure of import, temperature, flow, the signal collecting is transferred to modular converter, modular converter is converted to data signal resulting analog signal and sends processing module to, and processing module is carried out monitoring analysis and statistics the data signal obtaining.
Between described collecting unit and modular converter, be also provided with for strengthening the low-pass filter circuit of primary signal.
The input of described low-pass filter circuit is also in series with resistance and voltage follower, and described voltage follower is connected between resistance and low-pass filter circuit input.
Described collecting unit comprises well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up; Described well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up are linked in portable multisensor interface box.
Described modular converter is that model is the A/D converter of AD7689.
Described processing module is to have data monitoring, the PC of data analysis.
In described well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up, be respectively equipped with coulometric detector and alarm, described coulometric detector is for detection of the electric weight of power supply in well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up, when electric weight is too low, the signal detecting is sent to alarm, by alarm, point out.
The present invention is owing to taking above technical scheme, and it has the following advantages:
1, will ask the pressure meter and the thermometer that in product process, use to be replaced by sensor, more directly perceived, accurate;
2, transfer data on test computer, at computer interface, show intuitively to have improved and ask the ageing and accuracy of producing operation.
3, can show instant productivity the automatic class's of generation report, the situation of having avoided practising fraud has ensured accuracy and the reliability of overall operation.
4, the A/D converter shift theory that has adopted successive approximation, conversion speed is higher;
5, adopted low-pass filter circuit, the ability of extracting effective information from contaminated primary signal is stronger
This technique has solved the defect that tradition asks production. art to exist in sum, has improved the overall operation efficiency of asking product process, has reduced again operating risk.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is a kind of natural gas open flow test remote data input system theory diagram;
Fig. 2 is low-pass filter circuit figure.
In figure: 1, collecting unit; 2, modular converter; 3, processing module.
The specific embodiment
Below in conjunction with drawings and Examples, further the present invention will be described in detail.
As shown in Figure 1, a kind of natural gas open flow test remote data input system, comprise that being arranged on well head is used for the collecting unit 1 of collection signal, is converted to the modular converter 2 of data signal, for carrying out the processing module 3 of data monitoring and data analysis for the analog signal that collecting unit 1 is collected;
Pressure, temperature, the flow of described 1 pair of import of collecting unit carry out the collection of data, the signal collecting is transferred to modular converter 2, modular converter 2 is converted to data signal resulting analog signal and sends processing module 3 to, and processing module 3 is carried out monitoring analysis and statistics the data signal obtaining.
Described collecting unit 1 comprises well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up; Described well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up are linked in portable multisensor interface box.
Well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up detect the pressure and temperature at well head and critical flow prover place, and by converting unit, resulting analog signal is converted into data signal, and send monitoring and the processing module 3 of data analysis to by wired or wireless mode, both can receive, process, the PC that analyzes data, PC can show the data that obtain intuitively accurately.
In the above-described embodiment, for collecting unit is collected after signal, by modular converter 2, can accurately analog signal be converted into data signal, and the ability that can extract effective information from contaminated primary signal is stronger, therefore as Fig. 1, between described collecting unit 1 shown in 2 and modular converter 2, be also provided with for strengthening the low-pass filter circuit of primary signal, the input of described low-pass filter circuit is also in series with resistance and voltage follower, described voltage follower is connected between resistance and low-pass filter circuit input, under the constant prerequisite of voltage input filter effect, make current signal first by precision resistance, be converted to voltage signal, after carrying out impedance matching, voltage follower enters filter circuit again, elimination High-frequency Interference, increase signal strength signal intensity.
Circuit diagram in Fig. 2 comprises resistance R 3, the first operational amplifier OP07, resistance R 1, capacitor C 3, resistance R 2, capacitor C 2, capacitor C 4, resistance R 2, the second operational amplifier LM324, the input of the first described operational amplifier OP07 is in parallel with resistance R 3, the output head grounding of this resistance R 3, the output of the first operational amplifier OP07 is oppositely connected with its input, the output of the first operational amplifier OP07 is in series with resistance R 1, the output of described resistance R 1 is connected with respectively resistance R 2 and capacitor C 3, described resistance R 2 is in parallel with capacitor C 3, capacitor C 2 is in parallel with the second operational amplifier LM324, and the input after parallel connection is connected with the output of resistance R 2, capacitor C 3 output be connected to input and the output of the second operational amplifier LM324, the output head grounding of capacitor C 2.First signal amplifies signal through OP07 mono-operational amplifier, signal after amplification is converted into voltage signal by precision resistance R1 current signal, and enter into LM324 the second operational amplifier, by the further elimination High-frequency Interference of LM324 the second operational amplifier amplifying signal, increase signal strength signal intensity.
In the above-described embodiments, in order to make the conversion speed of modular converter 2 faster, speed can reach several microseconds, thus modular converter 2 to select model be the A/D converter of AD7689.
In the above-described embodiments, for the electric weight of each sensor in collecting unit 1 is not when enough working, can remind people, according to reminding, change in time battery, do not affect the use of sensor, therefore, described well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, in flow meter temperature pick up, be respectively equipped with coulometric detector and alarm, described coulometric detector is for detection of well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, the electric weight of power supply in flow meter temperature pick up, when electric weight is too low, the signal detecting is sent to alarm, by alarm, point out.
The present invention only describes with above-described embodiment, and the structure of each parts, setting position and connection thereof all can change to some extent.On the basis of technical solution of the present invention, all improvement of indivedual parts being carried out according to the principle of the invention or equivalents, all should not get rid of outside protection scope of the present invention.
Claims (7)
1. a natural gas open flow is tested remote data input system, it is characterized in that: comprise that being arranged on well head is used for the collecting unit (1) of collection signal, for the analog signal that collecting unit (1) is collected, be converted to the modular converter (2) of data signal, for carrying out the processing module (3) of data monitoring and data analysis;
Described collecting unit (1) carries out the collection of data to the pressure of import, temperature, flow, the signal collecting is transferred to modular converter (2), modular converter (2) is converted to data signal resulting analog signal and sends processing module (3) to, and the data signal that processing module (3) obtains is carried out monitoring analysis and statistics.
2. a kind of natural gas open flow test remote data input system according to claim 1, is characterized in that: between described collecting unit (1) and modular converter (2), be also provided with for strengthening the low-pass filter circuit of primary signal.
3. a kind of natural gas open flow according to claim 2 is tested remote data input system, it is characterized in that: the input of described low-pass filter circuit is also in series with resistance and voltage follower, described voltage follower is connected between resistance and low-pass filter circuit input.
4. a kind of natural gas open flow test remote data input system according to claim 1, is characterized in that: described collecting unit (1) comprises well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up; Described well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up are linked in portable multisensor interface box.
5. a kind of natural gas open flow test remote data input system according to claim 1, is characterized in that: described modular converter (2) is that model is the A/D converter of AD7689.
6. a kind of natural gas open flow test remote data input system according to claim 1, is characterized in that: described processing module (3) is to have data monitoring, the PC of data analysis.
7. a kind of natural gas open flow according to claim 4 is tested remote data input system, it is characterized in that: in described well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up, be respectively equipped with coulometric detector and alarm, described coulometric detector is for detection of the electric weight of power supply in well head pressure sensor, wellhead temperature sensor, flow meter pressure sensor, flow meter temperature pick up, when electric weight is too low, the signal detecting is sent to alarm, by alarm, point out.
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| CN201410282558.3A CN104074504A (en) | 2014-06-23 | 2014-06-23 | Natural gas open flow test remote data input system |
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| CN201410282558.3A CN104074504A (en) | 2014-06-23 | 2014-06-23 | Natural gas open flow test remote data input system |
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2014
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| US20040238177A1 (en) * | 2001-09-10 | 2004-12-02 | Borre Fossli | Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells |
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