Dynamic visualization observing device for displacement experiment

Abstract

The invention relates to a dynamic visualization observing device for a displacement experiment. The dynamic visualization observing device comprises a fluid pumping-in device, a middle piston container I, a middle piston container II, a rock core slice, a fluid collecting container, a dynamic visualization micro model and an observing assembly. The middle piston container I and the middle piston container II are connected in parallel between the fluid pumping-in device and the rock core slice, and the rock core slice is arranged inside the dynamic visualization micro model. The dynamic visualization micro model is prepared from polydimethysiloxane, an oil and water injection opening and a liquid discharging opening are formed in the parts, with the equal distance to the center, on the two sides of the center of an upper model body respectively, the rock core slice is embedded in the center of a lower model body in a pressing mode, and thus a groove with the shape and dimension the same with those of the rock core slice is formed. The device is simple in structure and convenient to operate; the rock core slice is fixed by heating and softening the lower model body, the oil and water dynamic moving rules and distribution situations of different reservoir types are observed through different rock core slices, and then schemes for exploiting oil pools and increasing the oil recovery are made in a targeted mode.

Description

technical field [0001] The invention belongs to the technical field of oil reservoir exploitation, and in particular relates to a dynamic visualization observation device for displacement experiments. Background technique [0002] At present, the laboratory experiments on reservoir development are mainly fluidity experiments, which can test parameters such as the permeability and recovery factor of rock cores. The microscopic methods used in the experiments can statically observe the static state before or after displacement. oil-water distribution. However, fluidity experiments and microscopic methods cannot dynamically observe the migration and distribution of oil and water (water: generally refers to the oil displacement system) during the displacement process. If the law of oil-water migration in the displacement process can be grasped, and its migration channels and oil-water distribution can be clarified, it will be helpful to propose a targeted oil reservoir recovery...

AI Technical Summary

Problems solved by technology

Although the glass model can simulate the distribution of oil and water during the displacement process, because the grooves are filled with core powder or quartz sand instead of real cores, the observation results do not conform to the real situation and cannot be used for guidance. Reservoir mining; the corroded grooves are irregular, even if the cores are placed in the grooves, the cores are not fixed and easy to move, which will lead to inaccurate observation results and serious errors; the model is made of glass, which is very difficult It is difficult to form a groove with the same size as the core, and it is difficult to ensure that the core is fixed, thus affecting the observation results

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