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Foam stability test device under pressure fluctuation and working method thereof

A foam stability and testing device technology, which is used in measurement devices, fluid dynamics tests, and testing of machine/structural components, etc., can solve the problem of not considering the influence of pressure factors, unable to simulate the pressure change environment, and affecting the reliability of test data. and other problems, to achieve the effect of high reliability and strong pressure resistance

Active Publication Date: 2015-04-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a typical method of testing foam stability under normal pressure. This test method does not consider the influence of pressure factors and cannot simulate the pressure change environment during fracturing construction, which will affect the reliability of test data.

Method used

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  • Foam stability test device under pressure fluctuation and working method thereof
  • Foam stability test device under pressure fluctuation and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A foam stability testing device under pressure fluctuations, comprising a foam generating part, a foam testing part, a pressure regulating part and a cleaning part; the foam generating part, the pressure regulating part and the cleaning part are respectively connected in parallel with the foam testing part, and realized by valve control : Separate series connection of foam generation part and foam test part; separate series connection of pressure regulation part and foam test part; separate series connection of cleaning part and foam test part.

[0042] The foam generating part includes a gas cylinder 24, a gas flow controller 16, a third valve 15, a first one-way valve 14, a foam generator 18, a seventh valve 11 and a second one-way valve connected in sequence along the gas flow direction 25. A foaming liquid intermediate container 19 is arranged in parallel with the foam generator 18, and the bottom of the foaming liquid intermediate container 19 is connected with an a...

Embodiment 2

[0049] A kind of working method that utilizes testing device test foam stability under pressure fluctuation as described in embodiment 1, comprises steps as follows:

[0050] (1) Start the test device:

[0051] Connect the various components of the test device, start the electric control box 2, start the advection pump 23, and start the gas flow controller 16;

[0052] (2) Exhaust:

[0053] Open the valve first valve 7, the second valve 10; close the seventh valve 11; adjust the electric control box 2 to control the high-torque stepping motor 1 after the piston 9 is raised to the top of the test cylinder 4, open the seventh valve 11, The fourth valve 17, the sixth valve 22; close the first valve 7, the fifth valve 21; adjust the advection pump 23, drive the distilled water in the distilled water intermediate container 20 into the test cylinder 4, until the distilled water flows out from the back pressure valve 8, Stop the advection pump 23;

[0054] (3) Generate foam:

[0...

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Abstract

Provided is a foam stability test device under pressure fluctuation. The foam stability test device comprises a foam generation part, a foam test part, a pressure regulation and control part and a cleaning part. The foam generation part, the pressure regulation and control part and the cleaning part are respectively connected in parallel with the foam test part, which is realized via valve control. The foam generation part and the foam test part are connected in series independently. The pressure regulation and control part and the foam test part are connected in series independently. The cleaning part and the foam test part are connected in series independently. Foam stability testing under the condition of pressure fluctuation is realized so that a defect that influence of variable pressure is not considered by the existing foam stability evaluation technology in the field of oil and gas fields is compensated. Visualized observation of the foam state under the condition of variable pressure is realized so that the foam stability test device under pressure fluctuation has important meaning in further research of change of the foam micro-morphology under the condition of foam variable pressure. The foam stability test device under pressure fluctuation is high in pressure resistance, data testing is completed under the pressure state, and the experimental data are closer to the production site of the oil and gas fields so that reliability is high.

Description

technical field [0001] The invention relates to a foam stability testing device under pressure fluctuations and a working method, belonging to the technical field of foam fluid performance testing devices for petroleum and natural gas development. Background technique [0002] As an intelligent, efficient, environmentally friendly and economical fluid, foam has been widely used in oil and gas development at home and abroad, especially in drilling, well completion, fracturing, acidizing, oil production, gas production, profile control, water plugging, sand washing It shows unique performance advantages in production processes such as wells. A large number of oil and gas field development practices have shown that the use of foam fluid is an effective means to protect oil and gas layers, increase oil and gas production, and reduce production costs. [0003] The stability of the foam fluid is the basis for the effective performance of its various phases. In the process of usi...

Claims

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Application Information

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IPC IPC(8): G01M10/00
Inventor 李兆敏吕其超李宾飞李松岩卢拥军邱晓慧张昀
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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