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Device and method for on-line viscosity detection of high temperature and high pressure oil-water mixed fluid

An oil-water mixed fluid, high temperature and high pressure technology, applied in the direction of measuring device, DC flow characteristic measurement, flow characteristics, etc., to achieve accurate and reliable measurement information, less equipment investment, and less lag time

Active Publication Date: 2019-07-05
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that there is no ideal fluid on-line viscosity detection device in the prior art, the present invention provides an on-line viscosity detection device and method for high-temperature and high-pressure oil-water mixed fluid. For the blank of the real-time viscosity measurement device of the oil-water two-phase mixed fluid under high temperature and high pressure, it can measure the viscosity of the pipe flow under different ratios of the oil-water two-phase mixture in real time, study the change law of the viscosity during the dynamic mixing process of different fluids, and study the oil-water two-phase mixed fluid Viscosity changes with temperature and pressure, the research range is wide, the measurement temperature can reach 220°C, and the measurement pressure can reach 70MPa

Method used

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  • Device and method for on-line viscosity detection of high temperature and high pressure oil-water mixed fluid
  • Device and method for on-line viscosity detection of high temperature and high pressure oil-water mixed fluid
  • Device and method for on-line viscosity detection of high temperature and high pressure oil-water mixed fluid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Early preparation:

[0048] Prepare the oil-water two-phase mixed fluid sample of required gas-oil ratio in the first high-temperature and high-pressure container 11, close the first control valve 51, the second control valve 52, the third control valve 53 and the second valve 62, and the remaining control valves and The valves are fully opened, and the system is evacuated through the vacuum interface 154 .

[0049] After the vacuuming is completed, set the pressure of the back pressure valve 56 as the test pressure, open the first control valve 51 and the second control valve 52, and close the first valve 61, the fifth valve 65, the sixth valve 66, the seventh valve 67, The eighth valve 68 is used to inject the sample in the first high-temperature and high-pressure container 11 into the entire wellbore flow model system through the first injection pump 13, and continue to pressurize until the pressure of the entire system reaches the actual production pressure required...

Embodiment 2

[0054] When measuring the viscosity of the oil-water two-phase mixed fluid after adding the additive (in the third high-temperature and high-pressure container 16) to the fluid in the actual production process, open the second injection pump 17, set a certain flow rate (this flow rate must be accurately controlled), and add the additive Inject the main pipeline 15 through the injection hole, make the additive mix with the flow in the main pipeline 15, and observe the readings of the differential pressure sensor and the pressure sensor at any time. Under the condition of high temperature and high pressure, the main fluid can be injected into the whole circulation mechanism by using the circulation injection pump and the pressure regulating pump first. After reaching the required pressure, set the heating temperature of the electric heating jacket 22 and operate the circulation mechanism to make the main fluid circulate in the circulation pipeline. , during the flow process, the ...

Embodiment 3

[0056] When measuring the viscosity of a two-phase oil-water two-phase mixed fluid (such as oil and water), the two fluids are respectively placed in the first high-temperature and high-pressure container 11 and the second high-temperature and high-pressure container 12, and the first control valve 51 and the second control valve 51 are opened. The control valve 52 and the third control valve 53 start the first injection pump 13 and the second injection pump 17 at the same time. By controlling the flow rates of the first injection pump 13 and the second injection pump 17, the two fluids can be controlled to contain each other in the main pipeline. The phase holdup rate is the flow rate ratio between the first injection pump 13 and the second injection pump 17. By setting the flow rate of the first injection pump 13, the total flow rate of the oil-water two-phase mixed fluid can be controlled, and the entire system can be controlled by the electric heating controller 21. tempera...

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Abstract

The invention provides an online viscosity detection device and method for a high temperature and high pressure oil-water mixed fluid. The online viscosity detection device for the high temperature and high pressure oil-water mixed fluid comprises a circulating mechanism, a temperature control mechanism and a data collecting and data processing mechanism. Various mature and high-accuracy instruments are mounted on the online viscosity detection device for the high temperature and high pressure oil-water mixed fluid and can continuously detect the temperature, pressure and pressure difference of the mixed fluid in a vertical pipeline in real time; and a computer collects data in real time and calculates the current viscosity of the fluid through a model pre-set in the computer. The online viscosity detection device for the high temperature and high pressure oil-water mixed fluid, provided by the invention, can measure the pipe flow viscosity of the mixed fluid under a high temperature and high pressure condition in real time, is suitable for single-phase and multi-phase fluids, has the advantages of less equipment investment, low cost, simple and convenient detection method and accurate and reliable detection and achieves wide engineering application values and academic values.

Description

technical field [0001] The invention relates to the technical field of fluid physical property detection, in particular to an on-line viscosity detection device for a high-temperature, high-pressure oil-water mixed fluid, and an on-line viscosity detection method for a fluid. Background technique [0002] The flow of oil-water two-phase mixture is widely used in petroleum, chemical industry and other related industries, especially in the petroleum industry, the flow of oil-water two-phase mixture is quite common, and the study of its flow law is especially important. [0003] Viscosity is an important physical parameter to measure the ability of liquid to inhibit flow, and it is one of the important physical properties and technical indicators of liquid. The properties of the liquid are often related to other properties of the product such as color, density, stability, changes in solid content and molecular weight, and the most convenient and sensitive method to detect these...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/04
CPCG01N11/04G01N2011/0046
Inventor 郭继香杨矞琦张登山赵海洋杨祖国高秋英程仲富邢钰曹畅范伟东
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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