CN103226109A - Oil-well moisture content measuring transducer - Google Patents
Oil-well moisture content measuring transducer Download PDFInfo
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- CN103226109A CN103226109A CN2013101612405A CN201310161240A CN103226109A CN 103226109 A CN103226109 A CN 103226109A CN 2013101612405 A CN2013101612405 A CN 2013101612405A CN 201310161240 A CN201310161240 A CN 201310161240A CN 103226109 A CN103226109 A CN 103226109A
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- amplifier
- demodulator
- oil
- microprocessor
- adc converter
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Abstract
The invention relates to a measuring transducer, especially to an oil-well moisture content measuring transducer. The transducer comprises an oscillator, a coupler, a microwave probe, a first amplifier, a second amplifier, an I/Q demodulator, a first filter amplifier, a second filter amplifier, an ADC converter, a microprocessor and an interface circuit, wherein the oscillator is connected with the coupler which is connected with the microwave probe; the coupler is connected with the I/Q demodulator through the first amplifier; the microwave probe is connected with the I/Q demodulator through the second amplifier; the I/Q demodulator is connected with the ADC converter through the first and second filter amplifiers; and the ADC converter is connected with the microprocessor which is connected with the interface circuit. By the utilization of strong penetrability of microwave, the transducer is adopted to detect moisture on the surface layer of a substance as well as the content of moisture inside the substance, and has remarkable advantages of short measuring time, high efficiency and the like.
Description
Technical field
The present invention relates to a kind of survey sensor, relate in particular to a kind of measurement of water ratio in oil well sensor.
Background technology:
At present, in the oil extraction process, for determining the crude oil and the gas production of each oil well, understand the variation of hydrocarbon stratum content and stratal configuration, need the volumetric flow rate of each component in the produced liquid in oil well is carried out continuous measurement and the real time measure data are provided,, improve recovery ratio with the optimization production parameter.
Similar technology: (1) neutron irradiation method: complex structure, the debugging loaded down with trivial details, cost an arm and a leg, manage strictness, resolution is not high, oil solids content bigger to its influence.(2) radio frequency capacitance method: simple in structure, debugging convenience, cheap, highly sensitive.Hang down moisture measuring accuracy height, still oil required than higher, the salinity of oil influences greatly measuring accuracy, and gas etc. influence bigger, generally is applied to low well measurement moisture, low mineralization and uses.(3) radio frequency frequency displacement method: simple in structure, practicality is relatively good, but the influence of casinghead gas body burden is bigger, and oily emulsifiability influence is big, and high moisture measuring accuracy is relatively poor.(4) additive method such as density, quality: complex structure, price is more expensive, debugging is loaded down with trivial details, the single-phase liquid measuring accuracy is higher, low precision when crude oil (Oil, Water, Gas three-phase liquid) is measured.(5) karl Fischer method: survey the oil product micro-water content.(6) microwave method (this project achievement in research): simple in structure, debugging is convenient, moderate, precision is high (in crude oil water containing 0～100% scope in the error 3%).
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of simple in structure, debugging is convenient, precision is high measurement of water ratio in oil well sensor.
Technical scheme of the present invention is: measurement of water ratio in oil well sensor, this sensor comprise oscillator, coupling mechanism, microwave probe, first amplifier, second amplifier, i/q demodulator, first filter amplifier, second filter amplifier, ADC converter, microprocessor and interface circuit;
Wherein, described oscillator is connected with described coupling mechanism, described coupling mechanism is connected with described microwave probe, described coupling mechanism is connected with described i/q demodulator by described first amplifier, described microwave probe is connected with described i/q demodulator by described second amplifier, described i/q demodulator is connected with described ADC converter with second filter amplifier by described first filter amplifier, and described ADC converter is connected with described microprocessor, and described microprocessor is connected with described interface circuit.
The invention has the beneficial effects as follows: this sensor is to utilize the penetration capacity of microwave strong, and what it detected is not only the moisture on material top layer, goes back the moisture of detectable substance inside, and has remarkable advantages such as Measuring Time weak point, efficient height.The foundation of microwave measurement crude oil water content is that profit specific inductive capacity difference is bigger.The oil water mixture specific inductive capacity difference that water percentage is different, thus also different to the absorption of microwave signal.According to through microwave signal size and phase shift behind the oil water mixture, can predict the water percentage of oil water mixture.
Description of drawings
Fig. 1 is the structured flowchart of measurement of water ratio in oil well sensor of the present invention.
Embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is described further.
As shown in Figure 1, measurement of water ratio in oil well sensor of the present invention, this sensor comprise oscillator, coupling mechanism, microwave probe, first amplifier, second amplifier, i/q demodulator, first filter amplifier, second filter amplifier, ADC converter, microprocessor and interface circuit;
Wherein, described oscillator is connected with described coupling mechanism, described coupling mechanism is connected with described microwave probe, described coupling mechanism is connected with described i/q demodulator by described first amplifier, described microwave probe is connected with described i/q demodulator by described second amplifier, described i/q demodulator is connected with described ADC converter with second filter amplifier by described first filter amplifier, and described ADC converter is connected with described microprocessor, and described microprocessor is connected with described interface circuit.
Principle of work of the present invention is: the probe of this sensor is inserted in the medium, power supply employing ± 15V, be energized signal produces fixed frequency by oscillator square-wave signal, after square-wave signal is handled by coupling mechanism, respectively by the microwave probe and first amplifier, the signal that sends to first amplifier sends to i/q demodulator through the first amplifier amplifying signal and handles, handle the back signal by behind first filter filtering, after the conversion of ADC converter, send to microprocessor, the square-wave signal that sends to microwave probe sends through microwave probe and passes through medium, return microwave probe, square-wave signal after returning is put processing by second amplifier, sending to i/q demodulator again handles, handle the back signal by second filter filtering after send to microprocessor after the conversion of ADC converter, microprocessor is done further processing with the signal that receives, and will handle the back signal by interface circuit again and send.
More than explanation is just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention
Claims (1)
1. measurement of water ratio in oil well sensor, it is characterized in that this sensor comprises oscillator, coupling mechanism, microwave probe, first amplifier, second amplifier, i/q demodulator, first filter amplifier, second filter amplifier, ADC converter, microprocessor and interface circuit;
Wherein, described oscillator is connected with described coupling mechanism, described coupling mechanism is connected with described microwave probe, described coupling mechanism is connected with described i/q demodulator by described first amplifier, described microwave probe is connected with described i/q demodulator by described second amplifier, described i/q demodulator is connected with described ADC converter with second filter amplifier by described first filter amplifier, and described ADC converter is connected with described microprocessor, and described microprocessor is connected with described interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101612405A CN103226109A (en) | 2013-05-03 | 2013-05-03 | Oil-well moisture content measuring transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101612405A CN103226109A (en) | 2013-05-03 | 2013-05-03 | Oil-well moisture content measuring transducer |
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| CN103226109A true CN103226109A (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101612405A Pending CN103226109A (en) | 2013-05-03 | 2013-05-03 | Oil-well moisture content measuring transducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198173A (en) * | 2020-09-22 | 2021-01-08 | 上海欧申科技有限公司 | Wireless monitoring device for measuring water content of logging drilling fluid and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4156843A (en) * | 1978-03-13 | 1979-05-29 | Strandberg Engineering Laboratories, Inc. | Microwave moisture indicator and control |
| CN86205895U (en) * | 1986-08-12 | 1987-07-08 | 煤炭部煤炭科学研究院唐山分院 | Microwave water content measuring instrument for measuring total water content in concentration coal |
| CN202451148U (en) * | 2011-12-31 | 2012-09-26 | 北京环鼎科技有限责任公司 | Downhole formation fluid analyzer |
| CN203224457U (en) * | 2013-05-03 | 2013-10-02 | 北京环鼎科技有限责任公司 | Sensor for measuring water content in oil well |
-
2013
- 2013-05-03 CN CN2013101612405A patent/CN103226109A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4156843A (en) * | 1978-03-13 | 1979-05-29 | Strandberg Engineering Laboratories, Inc. | Microwave moisture indicator and control |
| CN86205895U (en) * | 1986-08-12 | 1987-07-08 | 煤炭部煤炭科学研究院唐山分院 | Microwave water content measuring instrument for measuring total water content in concentration coal |
| CN202451148U (en) * | 2011-12-31 | 2012-09-26 | 北京环鼎科技有限责任公司 | Downhole formation fluid analyzer |
| CN203224457U (en) * | 2013-05-03 | 2013-10-02 | 北京环鼎科技有限责任公司 | Sensor for measuring water content in oil well |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198173A (en) * | 2020-09-22 | 2021-01-08 | 上海欧申科技有限公司 | Wireless monitoring device for measuring water content of logging drilling fluid and control method thereof |
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Application publication date: 20130731 |
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