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Apparatus for measuring wetting condition of surface of metal in oil/water double phase flow system, and method thereof

A metal surface, two-phase flow technology, applied in measurement devices, surface/boundary effects, instruments, etc., to achieve the effect of easy disassembly, small end surface area, and small distance

Inactive Publication Date: 2013-07-17
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device and method for measuring the wetting state of the metal surface in the oil / water two-phase flow system, which solves the problem of measuring the wetting state of the metal surface in the flowing oil / water system

Method used

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  • Apparatus for measuring wetting condition of surface of metal in oil/water double phase flow system, and method thereof
  • Apparatus for measuring wetting condition of surface of metal in oil/water double phase flow system, and method thereof
  • Apparatus for measuring wetting condition of surface of metal in oil/water double phase flow system, and method thereof

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Embodiment 1

[0053] The size and connection of each part of the present invention:

[0054] Such as figure 1 As shown, the device for measuring the wetting state of the metal surface in the oil / water two-phase flow system of the present invention includes a circulating pump 1, a flow rate regulating valve 2, a disc separator 3, a sample tank 4, a signal acquisition and display circuit 5, a storage Liquid tank 6, volume flow meter 7, test sample 8 and miniature conductivity sensor 9.

[0055] The circulation pump 1 is a 750W pipeline centrifugal pump; the liquid storage tank 6 is a cylindrical container of Ф150×300, made of plexiglass, and the lower part of the cylinder wall has a Ф2.54 outlet hole; the disc water separator 3 is made of stainless steel Manufactured, including one water inlet 10 of Ф2.54 and eight water outlets 12 of Ф10, and a cylindrical buffer chamber 11 of Ф85 between the water outlet 12 and the water inlet 10; the water inlet 10 enters from one end surface of the buffe...

Embodiment 2

[0058] The method for measuring the wetting state of the metal surface in the oil / water two-phase flow system of the present invention:

[0059] Take the measurement of the wetting state of the surface of a stainless steel test sample during the flow of a certain oil / water two-phase system as an example:

[0060] 1. Sample preparation

[0061] The test liquid is a mixture of distilled water with a volume percentage of 20% and No. 3 white oil with a volume percentage of 80%; the test sample is made of 304 stainless steel through machining.

[0062] 2. Measurement process

[0063] 1) Pour the test liquid prepared according to the predetermined volume ratio into the liquid storage tank 6, start the circulation pump 1, and wait for the liquid oil / water two-phase to mix and circulate smoothly in the whole device;

[0064] 2) Power up the signal processing and display circuit 5, and the light-emitting diode starts to flash;

[0065] 3) Adjust the flow rate regulating valve 2 so t...

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Abstract

The invention discloses an apparatus for measuring the wetting condition of the surface of a metal in an oil / water double phase flow system, and a method thereof, and belongs to the field of the measurement of the oil / water wetting condition of the surface of the metal. The apparatus comprises a liquid storage tank, a volume flow meter, a circulating pump, a flow velocity adjusting valve, a disc water separator, a sample cell, a test sample, miniature conductivity sensors, and a signal processing and displaying circuit. The apparatus utilizes the miniature conductivity sensors inlayed in the surface of the test sample to measure the conductivity of a liquid film on the surface of the metal nearby probes, and the measurement result can reflect the wetting condition of the surface of the metal nearby the probes because of the substantial difference of the conductivities of oil and water. The signal obtained through measuring by the miniature conductivity sensors is displayed by light emitting diodes to obtain the percentage of the water wetting (or oil wetting) of the surface of the test sample. The apparatus and the method can realize the measurement the wetting condition of the surface of the metal in the oil / water double phase fluid of different components at different flow velocities.

Description

technical field [0001] The invention belongs to the field of measuring the oil / water wetting state of the metal surface, in particular to a device and method for measuring the wetting state of the metal surface in the oil / water two-phase flow system. / The corrosion and wear behavior in the water system provides favorable conditions. Background technique [0002] Petroleum is one of the most important energy sources in the world today. At present, more than 80% of oil production wells in domestic and foreign oil fields use mechanical pumps with rods to produce oil. One of the serious problems faced by pumps with rods is the gap between the oil pipe and the sucker rod. Early failure due to corrosive wear. In recent years, with the continuous deepening of my country's oilfield development, the geological objects of oilfield exploitation have gradually shifted to thin layers and low-permeability layers. Due to poor formation conditions and low natural productivity, the load on...

Claims

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Application Information

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IPC IPC(8): G01N13/00
Inventor 段德莉李曙胡紫阳易凡侯思焓张荣禄王鹏
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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