CN109856166B - Novel oil pipeline water content measurement system and measurement method - Google Patents
Novel oil pipeline water content measurement system and measurement method Download PDFInfo
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Abstract
The invention discloses a novel method for measuring moisture in an oil pipeline, which is characterized by comprising the following steps of: a plurality of transceivers capable of receiving and transmitting broadband pulse signals are arranged on the periphery of the outer side of an oil pipeline which is made of nonmetallic materials and internally provided with oil containing moisture, and a transmitter for transmitting the broadband pulse signals is arranged in the oil pipeline; a circle of transceiver outside the oil pipeline receives a broadband pulse signal sent by a transmitter which transmits the broadband pulse signal in the oil pipeline; according to the time reversal principle, the amplitude phase of a plurality of transceivers outside the oil pipeline is adjusted according to the received signal characteristics; removing the transmitter in the oil pipeline; the signals are then transmitted by a plurality of transceivers external to the oil pipeline and received by the measurement signal transceiver. And calculating the water content of the oil in the oil pipeline according to the amplitude phase of the received signal. The invention has the characteristics of quick and accurate measurement, simple system deployment, strong applicability and the like.
Description
Technical Field
The invention relates to a novel water content measuring system for an oil pipeline.
Background
Along with the development of scientific research and the progress of production technology, quantitative analysis of moisture is listed as one of basic projects of physical and chemical analysis of various substances, and is taken as an important quality index of various substances.
Different requirements for determining moisture are set forth according to different moisture contents in different forms of samples. The water content measurement can be control analysis of industrial production or quality identification of industrial and agricultural products; the water content can be measured from the ton-meter product, and the water content analysis can be performed in a laboratory by using only a few microliters of test solution; constant moisture analysis with a moisture content of several percent to several tens of percent, trace moisture analysis with a moisture content of only less than one part per million, and the like.
The measuring method of the instrument has the advantages of simple operation, high sensitivity and good reproducibility, can continuously measure and automatically display data. The foreign moisture measurement is expensive and cannot be born by some laboratories and enterprises in China. The research and practice of the moisture measurement are enhanced, obvious benefits are obtained, various techniques of the domestic moisture measurement are brought close to the international level, and the production requirements of general laboratories and enterprises can be met. Classical moisture analysis methods have been gradually replaced by various moisture analysis methods including karl fischer moisture measurement, coulombic moisture measurement, dew point moisture measurement, microwave moisture meter measurement, infrared moisture measurement, and the like.
Disclosure of Invention
The invention provides a novel water content measuring system for an oil pipeline, which aims to solve the defects in the prior art and can measure the water content in oil in the oil pipeline.
The invention also provides a novel method for measuring the moisture in the oil pipeline.
The technical scheme adopted for solving the technical problems is as follows:
novel water content measurement system in oil pipeline has an oil pipeline of nonmetallic material that inside has the oil that contains moisture, its characterized in that: a plurality of transceivers capable of receiving and transmitting broadband pulse signals are arranged on the outer side of the oil pipeline in a circle, a transmitter for transmitting broadband pulse signals is arranged in the oil pipeline, and a measuring signal transceiver for receiving signals transmitted by the transceivers is arranged outside the oil pipeline.
The transceivers capable of receiving and transmitting the broadband pulse signals are uniformly distributed around the geometric center of the oil pipeline.
The novel method for measuring the moisture in the oil pipeline is characterized by comprising the following steps of:
a plurality of transceivers capable of receiving and transmitting broadband pulse signals are arranged on the periphery of the outer side of an oil pipeline which is made of nonmetallic materials and internally provided with oil containing moisture, and a transmitter for transmitting the broadband pulse signals is arranged in the oil pipeline;
a circle of transceiver outside the oil pipeline receives a broadband pulse signal sent by a transmitter which transmits the broadband pulse signal in the oil pipeline;
removing the transmitter in the oil pipeline;
then a plurality of transceivers outside the oil pipeline transmit signals simultaneously, and the signals transmitted by the transceivers are as follows:
E T (r k ,ω)＝P(ω)G F (r k ,r 0 ,ω)
the signals received by the transceiver are:
the signal received by the transceiver yields the moisture in the oil.
The invention has the advantages that:
the oil containing moisture is conveyed in the pipeline, the amplitude phase of the signal of the transceiver is received, then the oil containing different moisture is conveyed, the signal is changed, and the moisture content in the oil is calculated after the law of the change along with the moisture content is obtained through experiments.
The invention effectively measures the moisture in the oil pipeline, and has the characteristics of quick and accurate measurement, simple system deployment, strong applicability and the like.
Drawings
Fig. 1 is a model of an oil pipeline according to an embodiment of the present invention.
Fig. 2 is a process of determining amplitude phase of signals transmitted by 8 transceivers in an embodiment of the present invention.
Fig. 3 is a process of an external transceiver receiving a signal in an embodiment of the present invention.
Fig. 4 is a schematic diagram of a transceiver transmitting signals in an embodiment of the invention.
Fig. 5 is a schematic diagram of a transceiver receiving signals in an embodiment of the present invention.
Detailed Description
The implementation of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention.
As shown in fig. 1, which shows an oil pipeline model, the material is nonmetal, and the measurement is mainly divided into two processes:
the first procedure, shown in fig. 2, is a procedure for determining the amplitude phase of signals transmitted by 8 transceivers. A transmitter 2 for transmitting broadband pulse signals is arranged in the oil pipeline 1, and a circle of 8 transceivers 3 are uniformly distributed on the outer side of the oil pipeline 1 around the geometric center of the oil pipeline 1 to receive the broadband pulse signals transmitted by the transmitter 2 in the oil pipeline 1.
The second procedure, shown in fig. 3, removes the wideband pulse signal transmitter 2 from the oil pipeline 1.
Signals are then transmitted simultaneously by 8 transceivers 3 outside the oil pipeline 2, and the amplitude phase of the 8 transceivers 3 placed outside the oil pipeline 1 is adjusted by the received signal characteristics according to the time reversal principle.
Let transmitter 2 be located at r 0 The transmitted signal is P (omega), and the surrounding transceivers are located at r k The signal transmitted by the transceiver is determined by equation (1):
E T (r k ,ω)＝P(ω)G F (r k ,r 0 ,ω) (1)
wherein G is F (r k ,r 0 ω) is a forward green function.
A measuring signal transceiver 4 is placed outside the oil pipeline 2 to receive signals exclusively.
The signal received by transceiver 4 available at r is determined for equation (2):
when oil containing different moisture is delivered, the green function changes, changing the amplitude phase of the signal received by the transceiver 4. We can obtain the law of this variation with the moisture content by experiment and then calculate the moisture content therein. The amplitude phase E (r, t) of the signal measured by the similar moisture content transceiver 4 at different occasions will be different due to the difference of the oil composition and the moisture impurity composition and the difference of the pipeline structure and the size at the time of measuring the moisture content. Therefore, a series of conditions of known water content of the measured pipeline structure need to be calibrated before measurement in different environments in different occasions to obtain a corresponding table of E (r, t) and the water content, and then measurement work is carried out to obtain accurate measurement and analysis.
For example, when water is measured in an oil field on land, water and oil of the same composition are conveyed in the same structure pipeline, a correspondence table of E (r, t) and water content is obtained according to the steps, and then the water content data can be found from the obtained E (r, t) by measuring the water content.
If the water content of the oil pipeline is measured on a drilling platform at sea, the water and oil with the same components are conveyed in the pipeline with the same structure, another Zhang Duiying table of E (r, t) and water content is obtained according to the steps, and then the measurement can be performed here, and the water content data can be found from the obtained E (r, t).
As shown in fig. 4: the transmitter 2, the transceiver 3 and the transmission principle process of the measurement signal transceiver 4 are as follows: setting amplitude, phase and waveform memory, inputting into Microprocessor (MPU), obtaining required signal, DA converting, and transmitting via amplifier (PA) with antenna.
As shown in fig. 5: the transmitter 2, the transceiver 3 and the measuring signal transceiver 4 receive principle processes are as follows: the antenna receives the signal, then carries out Low Noise Amplification (LNA) and down conversion, then carries out AD conversion, and then outputs amplitude and phase by a Microprocessor (MPU), and records the amplitude and phase.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (1)
1. The novel method for measuring the moisture in the oil pipeline is characterized by comprising the following steps of:
a plurality of transceivers (3) capable of receiving and transmitting broadband pulse signals are arranged on the periphery of the outer side of an oil pipeline (1) which is made of nonmetallic materials and internally provided with oil containing moisture, and a transmitter (2) for transmitting the broadband pulse signals is arranged in the oil pipeline (1);
a circle of transceiver (3) outside the oil pipeline (1) receives a broadband pulse signal sent by a transmitter (2) which transmits the broadband pulse signal in the oil pipeline (1);
removing the transmitter (2) in the oil pipeline (1);
then, a plurality of transceivers (3) outside the oil pipeline (1) transmit signals simultaneously, and the signals transmitted by the transceivers (3) are as follows:
E T (r k ,ω)＝P(ω)G F (r k ,r 0 ,ω)
a measuring signal transceiver (4) is arranged outside the oil pipeline (1) to specially receive signals;
the signals received by the measurement signal transceiver (4) are:
preparing a correspondence table of E (r, t) and the moisture content in the oil;
obtaining the moisture content in the oil by comparing the signals received by the measuring signal transceiver (4) with a corresponding table;
the parameters described in the above formula are:
r 0 is the transmitter (2) location;
p (omega) is the transmission signal of the transmitter (2);
r k is the transceiver (3) location;
E T (r k ω) is the amplitude of the signal transmitted by the transceiver (3);
G F (r k ，r 0 ，ω) Is a forward green function;
r is the position of the measuring signal transceiver (4);
e (r, t) is the signal amplitude received by the measurement signal transceiver (4).
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1162985A (en) * | 1981-01-12 | 1984-02-28 | Hans J. Paap | Microwave-gamma ray water in crude monitor |
| US4667515A (en) * | 1984-12-05 | 1987-05-26 | United Kingdom Atomic Energy Authority | Pipeline inspection |
| US5353627A (en) * | 1993-08-19 | 1994-10-11 | Texaco Inc. | Passive acoustic detection of flow regime in a multi-phase fluid flow |
| RU2138023C1 (en) * | 1998-03-02 | 1999-09-20 | Мельников Владимир Иванович | Process determining flow rate of components of multiphase medium |
| CN102495107A (en) * | 2011-10-19 | 2012-06-13 | 天津大学 | Internal and external composite array sensor for detecting process parameter of fluid in pipeline |
| CN102588746A (en) * | 2012-03-22 | 2012-07-18 | 电子科技大学 | Inside-detection device for active electric-field liquid delivery pipelines |
| CN107085089A (en) * | 2017-05-21 | 2017-08-22 | 魏建军 | A kind of crude oil water content real-time measurement system |
| CN207439971U (en) * | 2017-11-30 | 2018-06-01 | 浙江大学自贡创新中心 | Line measuring system for moisture content in a kind of oil delivering pipe road |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8321133B2 (en) * | 2007-10-23 | 2012-11-27 | Schlumberger Technology Corporation | Measurement of sound speed of downhole fluid utilizing tube waves |
| US9109995B2 (en) * | 2012-10-16 | 2015-08-18 | Kam Controls, Inc. | Method and apparatus for determining the water concentration in a fluid mixture |
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- 2017-11-30 CN CN201711237567.0A patent/CN109856166B/en active Active
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|---|---|---|---|---|
| CA1162985A (en) * | 1981-01-12 | 1984-02-28 | Hans J. Paap | Microwave-gamma ray water in crude monitor |
| US4667515A (en) * | 1984-12-05 | 1987-05-26 | United Kingdom Atomic Energy Authority | Pipeline inspection |
| US5353627A (en) * | 1993-08-19 | 1994-10-11 | Texaco Inc. | Passive acoustic detection of flow regime in a multi-phase fluid flow |
| RU2138023C1 (en) * | 1998-03-02 | 1999-09-20 | Мельников Владимир Иванович | Process determining flow rate of components of multiphase medium |
| CN102495107A (en) * | 2011-10-19 | 2012-06-13 | 天津大学 | Internal and external composite array sensor for detecting process parameter of fluid in pipeline |
| CN102588746A (en) * | 2012-03-22 | 2012-07-18 | 电子科技大学 | Inside-detection device for active electric-field liquid delivery pipelines |
| CN107085089A (en) * | 2017-05-21 | 2017-08-22 | 魏建军 | A kind of crude oil water content real-time measurement system |
| CN207439971U (en) * | 2017-11-30 | 2018-06-01 | 浙江大学自贡创新中心 | Line measuring system for moisture content in a kind of oil delivering pipe road |
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