A pore-level simulation experimental setup for pore-throat-scale elastic microsphere migration in porous media
A technology for simulating experimental devices and elastic microspheres, which can be used in measuring devices, suspension and porous material analysis, scientific instruments, etc. It can solve the problems of poor repeatability, inability to accurately reflect porous media, and inability to achieve quantitative measurement, etc., and achieves easy cleaning Effect
Active Publication Date: 2016-01-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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However, this model is a two-dimensional model, and what is etched on glass and other materials is the enlarged rock pore-throat characteristics, which cannot accurately reflect the porous medium characteristics of real reservoir rocks; The pore-throat sizes of the micro-etching model belong to the same order of magnitude, which makes it difficult to clean the pore-throat-scale elastic microspheres injected into the micro-etching model, with poor repeatability and quantitative measurement.
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[0030] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0031] Such as figure 1 The shown pore-level simulation experimental device for the migration of elastic microspheres at the pore-throat scale in porous media includes a micropump 1, a first intermediate container 4, a second intermediate container 5, a third intermediate container 6, a pressure sensor 7, and a microscopic visualization Transparent quartz sand model 8, sampler 9, vacuum pump 11, bubble tower 12 and computer 14, wherein, micropump 1 is provided with pipeline 3 and valve 2 and first intermediate container 4, second intermediate container 5, third The intermediate container 6, the pressure sensor 7, the microscopically visualized tran...
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Abstract
The invention relates to a pore-level simulation experimental apparatus for migration of pore-throat scale elastic microspheres in a porous medium, belonging to the field of pore-level flow simulation technology. Aiming at the pore throat characteristics of the real oil reservoir rocks and the dimension characteristics of the pore-throat scale elastic microspheres, the invention designs a microcosmic visual transparent quartz sand model suitable for the pore-throat scale elastic microspheres and constructs an image real-time acquisition and data analysis system to realize real-time observation, acquisition and quantitative analysis of the migration process of the pore-throat scale elastic microspheres, a distribution image and a remaining oil distribution image, real-time measurement of migration of the pore-throat scale elastic microspheres and injection pressure during oil displacement and measurement and analysis of output concentration, water content and oil production of the pore-throat scale elastic microspheres; the designed microcosmic visual transparent quartz sand model can reflect the pore throat characteristics of the real oil reservoir rocks, and as the model is made of transparent quartz sands through filling, the model is convenient to clean and can be repeatedly filled.
Description
technical field [0001] The invention relates to a pore-level simulation experiment device for the migration of pore-throat-scale elastic microspheres in a porous medium, and belongs to the technical field of pore-level flow simulation. Background technique [0002] As the oilfield enters the high / ultra-high water cut period, the problems existing in the water injection development of the oilfield become more and more complicated, and it is more and more difficult to stabilize oil and control water. Short, poor effect, can no longer meet the requirements of profile control. For this reason, various deep profile control (flooding) technologies have been proposed and widely used. Among them, the deep control and displacement technology of pore-throat scale elastic microspheres has received sufficient attention due to the unique properties of pore-throat scale elastic microspheres. [0003] Compared with traditional inorganic particles, bulky particles, gels and other control ...
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IPC IPC(8): G01N15/08
Inventor 姚传进雷光伦程明明
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)