Visible artificial sand filling and oil flooding device with injection-production liquid level adjustment function, and application thereof

Abstract

The invention discloses a visible artificial sand filling and oil flooding device with an injection-production liquid level adjustment function, and application thereof. The device comprises an integrated frame, a cover plate and two-way connector elements. The cover plate comprises an upper cover and a lower cover. A groove is formed in the edge of the inner wall of each of the upper end and the lower end of the integrated frame. A plurality of holes A are formed in two sides of each of the upper end face and the lower end face of the integrated frame symmetrically at equal intervals. The cover plate is provided with holes B matched with the holes A. Fixing elements penetrate the holes A and holes B to fixedly connect the cover plate with the integrated frame. At least one hole C is formed in each of the left side and the right side of the integrated frame. The integrated frame is connected with the two-way connector elements through the holes C. The two-way connector elements on one side are injection inlets, and the two-way connector elements on the other side are production outlets. The injection inlets and the production outlets have position differences. The visible artificial sand filling and oil flooding device has the advantages that injection-production wellhead liquid level differences in the actual oil production process of oil reservoirs are simulated through the height position differences between the injection inlets and the production outlets, and the visible artificial sand filling and oil flooding device has great significance in improving water-flooding development efficiency and the like.

Description

technical field [0001] The invention relates to the technical field of oil reservoir physical simulation. More specifically, it relates to a visual artificial sand filling oil flooding device for adjusting the injection-production liquid level and its application. Background technique [0002] In order to ensure the smooth development of field experiments in oilfields, before tertiary oil recovery technology is applied to mineral deposits, it is usually necessary to carry out indoor simulation experiments, and select the best implementation plan through the adjustment of various parameters, in order to better guide the actual application process in oilfields. [0003] At present, there are mainly three physical models for indoor evaluation by simulating the actual formation conditions and production process of reservoirs: (1) Physical models for simulating various heterogeneities such as low permeability, fractures, and fault blocks in reservoirs, such as China The Chinese ...

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Problems solved by technology

The third model uses a three-dimensional simulation device to simulate various types of well patterns such as reverse five-point and reverse nine-point, but the device is complicated to manufacture and the operation process is cumbersome. More importantly, the model only considers the The layout does not involve the problem of liquid level difference at the injection and production ports

[0006] At present, the above-mentioned planar oil displacement model in the indoor stratigraphic simulation cannot simulate the influence of the liquid level difference at the injection and production ports on the recovery effect during the actual oil production process of the reservoir. On the other hand, the thickness of the model is relatively thin, and the sand filling volume is small , so there is a big limitation in the indoor simulation process

However, there is still a lack of effective means to study the influence of injection-production height difference on recovery, especially the development and improvement of related equipment has not been reported.

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