CN110794120A - Application method of coaxial phase method water-containing instrument - Google Patents
Application method of coaxial phase method water-containing instrument Download PDFInfo
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- CN110794120A CN110794120A CN201910702327.6A CN201910702327A CN110794120A CN 110794120 A CN110794120 A CN 110794120A CN 201910702327 A CN201910702327 A CN 201910702327A CN 110794120 A CN110794120 A CN 110794120A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2847—Water in oil
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Abstract
The invention relates to the technical field of manufacturing of water-containing instruments, in particular to the technical field of manufacturing of water-containing instruments, and particularly relates to a using method of a coaxial phase method water-containing instrument, which comprises the following steps: firstly, calibrating a water content instrument in a laboratory, secondly, installing the calibrated water content instrument on site, and vertically installing the water content instrument on a wellhead oil outlet pipe to enable produced liquid to flow in from the lower end of the water content instrument and flow out from the upper end of the water content instrument. The invention has simple structure and convenient use, effectively solves the throttling problem of the existing equipment because no throttling is generated in the equipment and the installation process, adopts a vertical installation mode, and simultaneously combines a simple gas-liquid separation flow to effectively solve the influence of gas on the water content detection.
Description
Technical Field
The invention relates to the technical field of manufacturing of water-containing instruments, in particular to a using method of a coaxial phase method water-containing instrument.
Background
The water content of the crude oil at the well head is detected with great difficulty and a plurality of influence factors, the prior art has the problems of throttling caused by equipment installation, throttling of the equipment, influence of gas on the detection effect of the equipment and the like, and the accurate measurement of the water content of the crude oil at the well head cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects of the technology and provides a using method of a coaxial phase method water content instrument, which can accurately measure the water content of crude oil at a wellhead.
The invention aims to realize the purpose, and adopts the following technical scheme that 1, the use method of the coaxial phase method water-containing instrument is characterized by comprising the following steps of firstly calibrating the water-containing instrument in a laboratory, wherein the specific calibration mode is that ① vertically places the water-containing instrument, pure oil is filled in the water-containing instrument, and the signal value of the water-containing instrument in the state of the pure oil is recorded;
② sampling in situ, separating water sample in the produced liquid to fill the water content instrument;
pouring out the pure oil in the first step, filling the water sample separated from the produced liquid in the equipment, and recording the signal value of the water content instrument in the state;
③ adjusting the output frequency and phase difference between the input signal and the reference signal to make the signal difference of the water content instrument between 800-1200mv under the pure oil and pure water conditions;
④ adding mixed solution with different oil-water ratio into the online crude oil water content detector, recording the signal value of the water content instrument, drawing the water content curve of the water content instrument by combining the signal values of pure oil and pure water, and completing laboratory calibration after drawing the curve;
step two, the calibrated moisture meter is installed on site,
and vertically installing the water content instrument on the oil outlet pipe of the wellhead, so that the produced liquid flows in from the lower end of the water content instrument and flows out from the upper end of the water content instrument.
Preferably, a set of gas-liquid separator is arranged at the front end of the water content instrument.
Preferably, in the second step, the water content meter is connected with the oil outlet pipe of the wellhead through a flange.
The invention has the advantages that the structure is simple, the use is convenient, the oil well is divided into two categories of low gas-containing oil wells and high gas-containing oil wells, different equipment installation methods are selected for different oil wells, and the accuracy of crude oil water content detection of equipment is effectively improved. Because the equipment and the installation process do not produce the throttle, the throttle problem of the existing equipment is effectively solved, a vertical installation mode is selected, and meanwhile, the simple gas-liquid separation process is combined, so that the influence of gas on the moisture detection is effectively solved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
As shown in figure 1, the method for using the water meter by the coaxial phase method comprises the following steps of firstly, calibrating the water meter in a laboratory, wherein ① the water meter is vertically placed and filled with pure oil, and recording the signal value of the water meter under the pure oil state;
② sampling on site, separating water sample in the produced liquid to fill the water content meter, and recording the signal value of the water content meter under the state;
③ the output frequency and phase difference of the input signal and the reference signal are adjusted to make the signal difference of the water content instrument between 800mv and 1200mv under the pure oil and pure water state, and in the interval, the requirement of measurement accuracy can be satisfied, and there is a certain range up-and-down movement allowance to ensure that the range change of the water content instrument caused by different mineralization degree does not exceed the signal theoretical change range 1800 mv.
④ adding mixed solution with different oil-water ratio into the device, recording the signal value of the water content instrument, and drawing the water content curve of the water content instrument by combining the signal values of pure oil and pure water;
step two, the water content instrument after the calibration is completed is installed on site, and the two conditions are divided into two conditions:
① the method for installing the water content detecting equipment of low-gas oil well is that the equipment is vertically installed, the produced liquid flows in from the lower end of the equipment and flows out from the upper end, the water content detecting signal of the low-gas oil well is a stable straight line, and the difference value of the water content detecting signal and the water content detected manually is within 5 percent.
② method for installing water content detecting equipment of high gas content oil well comprises installing a simple gas-liquid separator at the front end of the water content detecting equipment, and improving the accuracy of crude oil water content detection by the early separation process of enterprises.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. Firstly, calibrating the water content instrument in a laboratory, wherein ① vertically placing the water content instrument, filling pure oil in the water content instrument, and recording the signal value of the water content instrument in the pure oil state;
② sampling in situ, separating water sample in the produced liquid to fill the water content instrument;
pouring out the pure oil in the first step, filling the water sample separated from the produced liquid in the equipment, and recording the signal value of the water content instrument in the state;
③ adjusting the output frequency and phase difference between the input signal and the reference signal to make the signal difference of the water content instrument between 800-1200mv under the pure oil and pure water conditions;
④ adding mixed solution with different oil-water ratio into the online crude oil water content detector, recording the signal value of the water content instrument, drawing the water content curve of the water content instrument by combining the signal values of pure oil and pure water, and completing laboratory calibration after drawing the curve;
step two, the calibrated moisture meter is installed on site,
and vertically installing the water content instrument on the oil outlet pipe of the wellhead, so that the produced liquid flows in from the lower end of the water content instrument and flows out from the upper end of the water content instrument.
2. The use method of the coaxial phase method water content instrument according to claim 1, characterized in that a set of gas-liquid separator is arranged at the front end of the water content instrument.
3. The method of using the coaxial phase method water content instrument according to claim 1, wherein in the second step, the water content instrument is connected with a wellhead oil outlet pipe through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910702327.6A CN110794120A (en) | 2019-07-31 | 2019-07-31 | Application method of coaxial phase method water-containing instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910702327.6A CN110794120A (en) | 2019-07-31 | 2019-07-31 | Application method of coaxial phase method water-containing instrument |
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| CN110794120A true CN110794120A (en) | 2020-02-14 |
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| CN201910702327.6A Pending CN110794120A (en) | 2019-07-31 | 2019-07-31 | Application method of coaxial phase method water-containing instrument |
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Citations (8)
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|---|---|---|---|---|
| US20080015792A1 (en) * | 2006-06-15 | 2008-01-17 | Scott Bentley N | High Water Cut Well Measurements Using Heuristic Salinity Determination |
| CN201810299U (en) * | 2010-09-15 | 2011-04-27 | 中国石油天然气股份有限公司 | Horizontal well produced fluid cross section tester |
| US20130110411A1 (en) * | 2011-10-28 | 2013-05-02 | Saudi Arabian Oil Company | Combined water cut and salinity meter |
| CN104917464A (en) * | 2015-06-29 | 2015-09-16 | 北京工商大学 | Coaxial line phase method water cut meter oscillation circuit |
| CN105823868A (en) * | 2015-12-23 | 2016-08-03 | 艾山江·买买提依明 | Sampling type on-line detector for water content of crude oil |
| CN106918606A (en) * | 2017-03-08 | 2017-07-04 | 中国石油天然气股份有限公司 | It is a kind of to reduce the device based on radio frequency method well mouth of oil well water cut monitor error |
| CN207181344U (en) * | 2017-08-17 | 2018-04-03 | 中国石油天然气股份有限公司 | A kind of experimental system for the aqueous calibration curve of electrical characteristics method analyzer of water content |
| CN208075918U (en) * | 2018-03-21 | 2018-11-09 | 中国石油天然气股份有限公司 | A kind of multifunctional well head carrys out liquid detection device |
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2019
- 2019-07-31 CN CN201910702327.6A patent/CN110794120A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080015792A1 (en) * | 2006-06-15 | 2008-01-17 | Scott Bentley N | High Water Cut Well Measurements Using Heuristic Salinity Determination |
| CN201810299U (en) * | 2010-09-15 | 2011-04-27 | 中国石油天然气股份有限公司 | Horizontal well produced fluid cross section tester |
| US20130110411A1 (en) * | 2011-10-28 | 2013-05-02 | Saudi Arabian Oil Company | Combined water cut and salinity meter |
| CN104917464A (en) * | 2015-06-29 | 2015-09-16 | 北京工商大学 | Coaxial line phase method water cut meter oscillation circuit |
| CN105823868A (en) * | 2015-12-23 | 2016-08-03 | 艾山江·买买提依明 | Sampling type on-line detector for water content of crude oil |
| CN106918606A (en) * | 2017-03-08 | 2017-07-04 | 中国石油天然气股份有限公司 | It is a kind of to reduce the device based on radio frequency method well mouth of oil well water cut monitor error |
| CN207181344U (en) * | 2017-08-17 | 2018-04-03 | 中国石油天然气股份有限公司 | A kind of experimental system for the aqueous calibration curve of electrical characteristics method analyzer of water content |
| CN208075918U (en) * | 2018-03-21 | 2018-11-09 | 中国石油天然气股份有限公司 | A kind of multifunctional well head carrys out liquid detection device |
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| 尤波 等: "基于相位法在线实时油井含水率仪研究", 《仪表技术与传感器》 * |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201104 Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Applicant after: DAGANG OILFIELD GROUP Co.,Ltd. Applicant after: CHINA NATIONAL PETROLEUM Corp. Address before: 300 000 Dagang No.3 hospital, Binhai New Area, Tianjin Applicant before: DAGANG OILFIELD GROUP Co.,Ltd. |
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Application publication date: 20200214 |
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