Viscosity reduction flow measurement method

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. ...

AI Technical Summary

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

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