CN201386555Y - Electromagnetic wave measuring instrument for water holdup in oil well - Google Patents

Electromagnetic wave measuring instrument for water holdup in oil well Download PDF

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Publication number
CN201386555Y
CN201386555Y CN200920036650U CN200920036650U CN201386555Y CN 201386555 Y CN201386555 Y CN 201386555Y CN 200920036650 U CN200920036650 U CN 200920036650U CN 200920036650 U CN200920036650 U CN 200920036650U CN 201386555 Y CN201386555 Y CN 201386555Y
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CN
China
Prior art keywords
circuit
measuring instrument
circuit board
electromagnetic wave
antenna
Prior art date
Application number
CN200920036650U
Other languages
Chinese (zh)
Inventor
孟敏
Original Assignee
江苏蓝深远望系统集成有限公司
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Application filed by 江苏蓝深远望系统集成有限公司 filed Critical 江苏蓝深远望系统集成有限公司
Priority to CN200920036650U priority Critical patent/CN201386555Y/en
Application granted granted Critical
Publication of CN201386555Y publication Critical patent/CN201386555Y/en

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Abstract

The utility model relates to an electromagnetic wave measuring instrument for water holdup in an oil well, comprising flanged pipe fittings and a circuit board. The measuring instrument is characterized in that the circuit board is arranged on the pipe wall of the flanged pipe fittings; the circuit board comprises a transmitting circuit and a receiving circuit which are connected through an antenna; the transmitting circuit and the receiving circuit are respectively connected with the input end of a phase discrimination circuit; the output end of the phase discrimination circuit is connected with a processor through an A/D conversion circuit; the processor is provided with a communication interface used for transmitting data with peripheral equipment; the antenna extends into the pipe completely; the part of the circuit board except the antenna is arranged at the outer side of the pipe wall; and the circuit board is packaged by an outer shell. The electromagnetic wave measuring instrument has the advantages that the problem of inaccurate measurement of the commonly used measuring instrument for the water holdup under the high water cut condition is solved; compared with the traditional capacitance measuring instrument for the water holdup, the electromagnetic wave measuring instrument has higher measuring accuracy and reliability, and is suitable for the occasions such as oil field single well, metering station, pipeline and two-phase flowmeter modification.

Description

The electromagnetic wave oil well water capacity measuring instrument

Technical field

The utility model relates to a kind of electromagnetic wave oil well water capacity measuring instrument, a kind of specifically water capacity measuring instrument that adopts Microwave Measurement Technique to measure the oil water mixture ratio.

Background technology

Measuring circuit is simple, cost is low for traditional electric-resistivity method electromagnetic wave oil well water capacity measuring instrument (abbreviation logging instrument), but can only measure moisture below 40%, and influenced by content of mineral substances, and precision is low.The capacitance method logging instrument can only be measured moisture below 60%, influenced by content of mineral substances, and precision is low.Present Chinese oil well is in high water-cut stage, average moisture reaching more than 90%, and traditional water capacity measuring instrument can't satisfy the needs of actual use.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned weak point, and a kind of electromagnetic wave method logging instrument is provided, and the measurement 0~100% of energy linearity is moisture, and precision can reach 1%.

According to the technical scheme that the utility model provides, a kind of electromagnetic wave oil well water capacity measuring instrument comprises flanged fitting and circuit board.Described circuit board is installed on the duct wall of flanged fitting; Described circuit board comprises, by radiating circuit and the receiving circuit that antenna connects, described radiating circuit and receiving circuit are connected the input of phase discriminator again respectively; The output of described phase discriminator connects processor by analog to digital conversion circuit, and described processor has and is used for and external equipment transmission data communication interface; Described antenna is stretched in the pipeline fully, and the part of described circuit board except that antenna is positioned at the duct wall outside; Described circuit board is encapsulated by shell.The communication interface of described processor comprises the RS485 interface.

Compared with the prior art the utility model has the following advantages: the utility model is simple and reasonable for structure; Adopt advanced Microwave Measurement Technique, solved the difficult problem that water capacity measuring instrument device at present commonly used can not accurately be measured under high aqueous conditions, and more traditional electric capacity water capacity measuring instrument has had higher certainty of measurement and stability; Be applicable to occasions such as oil field individual well, measuring station, pipeline and two-phase flow meter transformation.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is a lateral view of the present utility model.

Fig. 3 is a scheme of installation of the present utility model.

Fig. 4 is the utility model board structure of circuit block diagram.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 1, the utility model is equipped with circuit board 5 on pipeline 4 walls of flanged fitting, and flanged fitting comprises interconnective flange 3 and pipeline 4, and the flanged fitting two ends are respectively inlet 1 and outlet 2.Described circuit board 5 is encapsulated by shell.The part of described circuit board except that antenna is positioned at the duct wall outside, and the antenna of circuit board is stretched in the pipeline fully.L=300mm among the figure.

As shown in Figure 2,4 equally distributed flange fixing holes 4 of identical circumference are arranged, φ 1=125mm, φ 2=18mm, φ 4=160mm, φ 3=50mm on the flange 3.

As shown in Figure 3, the utility model 9 is installed on oil pipeline 8 circuits, is that flange bolt is connected with the connected mode of oil pipeline 8.7 is oil pumper among the figure.

As shown in Figure 4, described circuit board comprises, by radiating circuit and the receiving circuit that antenna connects, described radiating circuit and receiving circuit are connected the input of phase discriminator again respectively; The output of described phase discriminator connects processor by analog to digital conversion circuit, and described processor has and is used for and external equipment transmission data communication interface.

During work, crude oil 1 enters pipeline by entering the mouth, and circuit board detecting, analyzes data, obtains a result, and crude oil flows out from exporting 2.

Principle of the present utility model: when utilizing electromagnetic wave two to lead coaxial propagation, phase place in different profit blending agents and changes in amplitude situation, conversion drawing actual oil-water ratio.Phase discriminator detects the phase shift of the ripple that radiating circuit and receiving circuit sent, and sends information to processor through analog to digital conversion circuit.Carry out transfer of data by processor by communication interface (as the RS485 interface) and external equipment.

Among the embodiment, processor adopting be the mc68hc908gr8 of freescale (Freescale).Technical indicator of the present utility model is as follows.

The environment for use condition:

Environment temperature :-30 ℃~+ 70 ℃;

Relative humidity: 5%~95%;

Ambient condition:

Pressure medium: 0-15Mpa;

Medium temperature :-40 ℃-100 ℃;

Water holding certainty of measurement: ± 3%;

Water holding measurement category: 0-100%;

Water holding resolution: 0.1%;

Data output: 4~20mA analog signal, RS485 data signal;

Power supply: 9~24VDC; Explosion-proof: EXD II BT4.

Claims (2)

1, a kind of electromagnetic wave oil well water capacity measuring instrument comprises flanged fitting and circuit board, it is characterized in that: described circuit board is installed on the duct wall of flanged fitting; Described circuit board comprises, by radiating circuit and the receiving circuit that antenna connects, described radiating circuit and receiving circuit are connected the input of phase discriminator again respectively; The output of described phase discriminator connects processor by analog to digital conversion circuit, and described processor has and is used for and external equipment transmission data communication interface; Described antenna is stretched in the pipeline fully, and the part of described circuit board except that antenna is positioned at the duct wall outside; Described circuit board is encapsulated by shell.
2, electromagnetic wave oil well water capacity measuring instrument according to claim 1 is characterized in that, the communication interface of described processor comprises the RS485 interface.
CN200920036650U 2009-02-25 2009-02-25 Electromagnetic wave measuring instrument for water holdup in oil well CN201386555Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920036650U CN201386555Y (en) 2009-02-25 2009-02-25 Electromagnetic wave measuring instrument for water holdup in oil well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920036650U CN201386555Y (en) 2009-02-25 2009-02-25 Electromagnetic wave measuring instrument for water holdup in oil well

Publications (1)

Publication Number Publication Date
CN201386555Y true CN201386555Y (en) 2010-01-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920036650U CN201386555Y (en) 2009-02-25 2009-02-25 Electromagnetic wave measuring instrument for water holdup in oil well

Country Status (1)

Country Link
CN (1) CN201386555Y (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103185732A (en) * 2012-12-10 2013-07-03 北京乾达源科技有限公司 Monitoring method and monitoring instrument for water content in oil
CN105090751A (en) * 2015-08-31 2015-11-25 无锡伊佩克科技有限公司 Self-sufficient type oil conveying pipe water content detection and control system
CN105116932A (en) * 2015-08-31 2015-12-02 无锡伊佩克科技有限公司 Oil pipeline water content monitoring and early warning system
US9804105B2 (en) 2015-08-28 2017-10-31 Saudi Arabian Oil Company Systems and methods for determining water-cut of a fluid mixture
CN107654226A (en) * 2017-08-23 2018-02-02 中国石油天然气股份有限公司 Underground moisture content meter
US10241059B2 (en) 2015-08-28 2019-03-26 Saudi Arabian Oil Company Water-cut sensor system
US10386312B2 (en) 2015-08-28 2019-08-20 Saudi Arabian Oil Company Systems and methods for determining water-cut of a fluid mixture

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103185732A (en) * 2012-12-10 2013-07-03 北京乾达源科技有限公司 Monitoring method and monitoring instrument for water content in oil
US9804105B2 (en) 2015-08-28 2017-10-31 Saudi Arabian Oil Company Systems and methods for determining water-cut of a fluid mixture
US10241059B2 (en) 2015-08-28 2019-03-26 Saudi Arabian Oil Company Water-cut sensor system
US10386312B2 (en) 2015-08-28 2019-08-20 Saudi Arabian Oil Company Systems and methods for determining water-cut of a fluid mixture
CN105090751A (en) * 2015-08-31 2015-11-25 无锡伊佩克科技有限公司 Self-sufficient type oil conveying pipe water content detection and control system
CN105116932A (en) * 2015-08-31 2015-12-02 无锡伊佩克科技有限公司 Oil pipeline water content monitoring and early warning system
CN107654226A (en) * 2017-08-23 2018-02-02 中国石油天然气股份有限公司 Underground moisture content meter

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Granted publication date: 20100120