Manufacturing method of intraformationall heterogeneous core capable of realizing separated injection and separated production, and experimental method thereof

Abstract

The invention belongs to the technical field of oil reservoir development, and in particular relates to a manufacturing method of an intraformationall heterogeneous core capable of realizing separated injection and separated production, and an experimental method thereof. The manufacturing method comprises the following steps: firstly, weighing the quantity of quartz sand and epoxy resin for manufacturing high, medium and low permeable layers with the design size, and mixing the quartz sand and the epoxy resin uniformly and correspondingly; secondly, putting isolating bakelite plates among lower, middle and upper layers of mixed sand in the length direction end face, putting metal moulds separately, scraping, pressurizing and drying, adhering a core end cover to a core end face, coating the surfaces of the other parts of the core with one layer of thickened and uncured epoxy resin, and naturally drying; finally, putting the adhered end cover core into a wood mold, performing integral casting by using the epoxy resin, and curing to form the intraformationall heterogeneous core capable of realizing separated injection and separated production. The manufacturing process is simple to operate, the experimental data is reliable, and the problem that each small layer wave, the state and the reserve recovery degree of the intraformationall heterogeneous core cannot be evaluated quantitatively is solved.

Description

Technical field: [0001] The invention belongs to the technical field of oil reservoir development, and in particular relates to a method for making an intralayer heterogeneous rock core and an experimental method thereof for realizing separate injection and separate production. Background technique: [0002] At present, the production of major oilfields in China has entered the stage of medium-high water cut development, and profile control, water shutoff and chemical flooding have become one of the important technical means to improve oilfield recovery. In order to make profile control, water shutoff and chemical flooding measures achieve the expected effect of increasing oil and reducing water, the profile control water shutoff agent and oil displacement agent and their injection process parameters must be consistent with the geological characteristics, fluid properties and development of the target reservoir. adapt to the status quo. At present, physical simulation, that...

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Problems solved by technology

[0003] The invention relates to a method for making and experimenting heterogeneous rock cores in a layer that can realize "separate injection and separate production", and solves the problem that the sweeping status and recovery degree of each small layer of heterogeneous rock cores in a layer cannot be quantitatively evaluated.

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