Three-dimensional experimental device for three-dimensional development of heavy oil reservoirs

Abstract

The present invention relates to a three-dimensional experimental device for the three-dimensional development of heavy oil reservoirs. The three-dimensional experimental device for the three-dimensional development of heavy oil reservoirs includes a three-dimensional core model, a constant temperature box, a steam generator, a temperature and pressure monitoring system, an advection pump, and an intermediate container; The vertical well interface is arranged on the upper cover of the core model, and the horizontal well interface is arranged on the side of the 3D core model; the inner cavity of the 3D core model is filled with a mixture of high alumina cement and quartz sand, and the 3D core model is also equipped with temperature monitoring interfaces, Pressure monitoring interface and saturated oil hole; the first advection pump is connected to the steam generator, the steam generator is connected to the inlet of the lower end of the first piston container, and the outlet of the upper end of the steam generator is connected to a horizontal well interface of the three-dimensional core model; the second piston The upper outlet of the container is connected to the intermediate container, and the intermediate container is connected to the saturated oil hole on the cover plate of the three-dimensional core model. The invention integrates the indoor experiments of the three well pattern structures of SAGD, composite flooding and gravity drainage assisted steam flooding, and can convert the experimental well pattern structure to provide convenience for physical simulation in the three-dimensional development of heavy oil.

Description

1. Technical field: [0001] The invention relates to an indoor simulated heavy oil thermal recovery experimental device for the study of the three-dimensional development mechanism of the heavy oil reservoir, and specifically relates to a three-dimensional experimental device for the three-dimensional development of the heavy oil reservoir. 2. Background technology: [0002] The three-dimensional reservoir development is a development model established based on the three-dimensional migration and driving laws of fluids, while considering the influence of horizontal and vertical forces on fluid seepage. At present, SAGD, composite flooding and gravity drainage-assisted steam flooding are the most typical in the three-dimensional development practice of heavy oil reservoirs, and have achieved remarkable development results. However, there are few studies on the mechanism of the three-dimensional development of heavy oil, and there are no reports on the research by experimental ...

AI Technical Summary

Problems solved by technology

However, there are few studies on the mechanism of the three-dimensional development of heavy oil, and there are no reports on the research by experimental means

The main reasons are: (1) It is difficult to design a simple and accurate temperature measurement system that reflects the temperature of the reservoir, the front edge of the steam chamber, and the temperature of the steam chamber; (2) The physical simulation core in the three-dimensional development room of the heavy oil reservoir must have the characteristics of high temperature and high pressure resistance

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