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Rotatable imbibition experiment device

An experimental device and imbibition technology, applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve problems such as measurement error, achieve simple measurement process, solve measurement error, and eliminate the influence of air intake and the effect of solving

Inactive Publication Date: 2017-05-31
CHINA UNIV OF PETROLEUM (BEIJING)
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AI Technical Summary

Problems solved by technology

[0010] Another object of the present invention is to provide a rotatable imbibition experimental device to solve the problem of measurement error caused by the lower end blocking effect of the existing imbibition instrument when clamping the rock core

Method used

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Embodiment Construction

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0033] Such as figure 1As shown, as one of the specific embodiments of the present invention, it does not specifically limit the scope of the present invention. A rotatable imbibition experimental device 100 is mainly used to evaluate the performance and effect of core imbibition, and can be used to predict and evaluate the effect of low-permeability, tight oil reservoirs and fractured oil reservoirs and other oil reservoirs mainly developed by imbibition. Specifically, the cores of fractured reservoirs such as tight reservoirs, carbonate-salt reservoirs, and shale reservoirs are taken as the research objects, and the imbibition of the cores due to capillary force and gravity under oil (gas) and water two-phase conditions In ord...

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Abstract

The invention discloses a rotatable imbibition experiment device. The device comprises a glass container, a mounting seat, an electric motor, a rotating disk and a rock sample holder. The glass container is sealedly mounted on the upper end of the mounting seat. The container contains a liquid and a rock sample to be detected. The rock sample to be detected is immersed in the liquid and is clamped through the rock sample holder. The upper part of the container has a transparent measuring tube. The measuring tube has scales. The electric motor is mounted on the mounting seat and is connected to the rotating disk by a rotating shaft. The rotating disk is connected to the rock sample holder. The electric motor drives the rock sample holder to rotate in the liquid. The rotatable imbibition experiment device improves the metering precision of the oil adsorption and discharge volumes and solves the problem of measurement errors of the existing infiltrometer. The electric motor drives the rock sample holder to rotate, oil beads adhering to the surface of the rock center are separated from the surface of the rock center under action of a centrifugal force, then floats into the measuring tube under action of gravitational differentiation and then is aggregated to form oil in the measuring tube so that the metering precision of the oil adsorption and discharge volumes is improved.

Description

technical field [0001] The invention relates to an evaluation device for rock core imbibition performance in the field of petroleum and natural gas engineering, in particular to a rotatable imbibition experimental device. Background technique [0002] In oil and gas reservoirs such as low-permeability reservoirs, tight reservoirs, and carbonate reservoirs, there are different degrees of fracture development, and the seepage system can include fracture systems and matrix systems. The production mechanism of this kind of reservoir is mainly manifested as: under the action of the flow pressure gradient between the fracture system and the matrix system, the injected water enters the rock block to expel oil (gas); Oil (gas); the oil (gas) and water inside and outside the rock block are separated and discharged. Obviously, hydrophilic tight rock blocks and capillary self-absorption of water are the main oil recovery mechanisms. This oil (gas) recovery mechanism relies on imbibit...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/0893
Inventor 王敬刘慧卿拜杰孟庆帮甯波邰刘龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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