Method of measuring foam rheological behaviour using bleed flou type multipoint pipe viscosimeter

A technology of viscometer and discharge tube, which is applied in the field of measuring foam rheology with a discharge type multi-point tube viscometer, which achieves the effects of short measurement time, stable foam performance and simplified measurement process

Inactive Publication Date: 2005-06-08
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] The "method for measuring the rheology of foam with a multi-point tube viscometer of the discharge type" proposed by the present invention comprehensively solves many problems in the measurement of the rheology of foam at high temperature and high pressure: foam stability, foam flow measurement, large-scale Adjustment of temperature and pressure changes, experiment scale, duration and raw material consumption

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  • Method of measuring foam rheological behaviour using bleed flou type multipoint pipe viscosimeter

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Experimental program
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Embodiment Construction

[0011] 1. Inject a predetermined volume of foaming agent into the foaming cylinder 7 through the liquid injection valve 3, and then use the temperature control system 2 to heat to a predetermined temperature and keep the temperature constant;

[0012] 2. Inject the compressed air into the foaming cylinder 7 through the gas injection valve 11 until the predetermined pressure is reached. The gas injection volume can be obtained according to the gas state equation from the injection pressure, temperature and system volume;

[0013] 3. Start the magnetic pump 6 to circulate the foam until the uniform foam is observed from the transparent observation tube 8, then the foaming work is completed. In the subsequent measurement, the magnetic pump 6 is always working, and the foam with eluate in the lower part is drawn out from the bottom, and then foamed after high-speed agitation, and then injected from the top of the cylinder. Stirring up and down in this way keeps the stability of th...

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Abstract

The invention relates to the method of flush flow multi-point tube viscometer measuring rheological property of foam, suitable in different conditions of high temperature and high pressure, realizing the measurement in usual laboratory, uses less row material (chemical agent), needs short time, with stable performance of foam and large variation rangeof temperature, pressure and other environment parameter. Its technical proposal is: use as the main device for measuring rheological property of foam, which is formed by foam generating and stabilizing system, flush flow pipeline system, temperature control system, pressure control system and data collecting system. The experiment method is to use foam generator with unchangeable volume, measure pressure difference and temperature of the foam flowing along the pipeline in different areas and points, without measurement for foam flux.

Description

Technical field [0001] The invention relates to a method for measuring the rheological properties of foams with a discharge type multi-point tube viscometer, which is suitable for measuring the rheological properties of foams under different high-temperature and high-pressure conditions, especially for foams in well bores or formations at different depths in oil and gas exploration and development. rheological determination. Background technique [0002] In the exploration and development of oil and natural gas, foam fluid is widely used in various operations, such as: foam drilling, foam completion, foam washing, foam fracturing, foam flooding, foam steam thermal recovery, etc. In all the above-mentioned foam fluid wellbore operations, a common and important basis is the determination of foam rheology under high temperature and high pressure conditions. Foam is a multiphase fluid, the liquid phase is incompressible, but its gas phase volume is greatly affected by temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/02
Inventor 孟英峰刘绘新梁红陈一建陈小瑜唐贵
Owner SOUTHWEST PETROLEUM UNIV
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