Viscosity reduction flow measurement method

A technology of flow measurement and viscosity reduction, which is applied in the application of thermal effects to detect fluid flow, etc. It can solve problems such as inability to measure small flow rates, damage volumetric flowmeters, and inaccurate measurements. It is convenient for remote observation and management, and easy for installation and maintenance. , the effect of preventing pipe clogging

Inactive Publication Date: 2015-11-04
HEFEI JINGTE INSTR
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Problems solved by technology

However, when the volumetric flowmeter is measuring, it is required that the medium to be measured should not contain impurities such as sand, otherwise it will not only measure inaccurately, but also damage the volumetric flowmeter.
At the same time, neither positive displacement flowmeters nor mass flowmeters can measure small flow rates.
Moreover, the crude oil output from the wellhead of the oil well contains a certain amount of wax, which is easy to block the oil pipeline
Therefore, traditional measuring instruments cannot accurately measure wellhead crude oil

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and examples, and the contents of the examples are not intended to limit the protection scope of the present invention.

[0018] figure 1 A schematic structural view of the viscosity-reducing flow metering device used in the flow metering method of the present invention is shown. see figure 1 , the viscosity reducing flow metering device includes a strong magnetic coil 4 , a first temperature sensor 5 , a second temperature sensor 6 , a third temperature sensor 7 and a controller 8 . in,

[0019] The strong magnetic coil 4 is arranged around the oil pipeline 3 and connected with the controller 8 . The controller 8 outputs a DC high-voltage pulse and applies the DC high-voltage pulse to the strong magnetic coil 4 , thereby generating a high-intensity pulsed magnetic field with a fixed direction in the strong magnetic coil 4 . This high-intensity pulsed magnetic field h...

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Abstract

The present invention relates to a viscosity reduction flow measurement method. According to the method, a viscosity reduction flow measurement device is used to carry out measurement, and the method comprises the following steps that: (1) a controller (8) outputs direct current high voltage pulse and applies the direct current high voltage pulse to a strong magnetic coil (4) such that the strong magnetic coil (4) generates a high intensity pulse magnetic field with a fixed direction, (2) the viscosity reduction and heating of the crude oil in an oil pipeline (3) are carried out through the high intensity pulse magnetic field, and (3) the controller calculates a flow through the temperature differences measured by a first temperature sensor (5) and a third temperature sensor (7). According to the measurement method, the viscosity of the crude oil can be reduced, the pipe blocking is prevented, the crude oil can be precisely measured, the functions of display and signal remote transmission are provided, and installation and maintenance are convenient at the same time.

Description

technical field [0001] The invention belongs to the technical field of fluid measurement, and relates to a wellhead flow measurement method for measuring crude oil, in particular to a viscosity-reducing flow measurement method. Background technique [0002] During oil production, it is necessary to measure the flow of intermittent crude oil output from the wellhead of the oil field. At present, the commonly used flow meters are positive displacement flow meters and mass flow meters. However, when the volumetric flowmeter is measuring, it is required that the medium to be measured should not contain sand and other impurities, otherwise not only the measurement will be inaccurate, but also the volumetric flowmeter will be damaged. At the same time, neither positive displacement flowmeters nor mass flowmeters can measure tiny flow rates. Moreover, the crude oil output from the wellhead of the oil well contains a certain amount of wax, which is easy to block the oil pipeline. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/68
Inventor 吴叶军
Owner HEFEI JINGTE INSTR
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