Novel device for measuring water flooding effect of well pattern model by using probe method

Abstract

The invention discloses a novel device for measuring the water flooding effect of a well pattern model by using a probe method. The device comprises a liquid supply mechanism, a reservoir model mechanism and a measuring mechanism, wherein the reservoir model mechanism is a component for simulating a heterogeneous reservoir; the liquid supply mechanism is a component for injecting the needed liquidinto a reservoir simulated by the reservoir model mechanism; the measuring mechanism is a component for measuring oil-water saturation of the reservoir simulated by the reservoir model mechanism. Thedevice is simple in structure, and can be used for studying the water flooding effect of the heterogeneous reservoir and the ultimate recovery factor of the reservoir under different injection and production conditions by simulating five-point well pattern and the anti-five-point well pattern systems.

Description

technical field [0001] The invention belongs to the technical field of water flooding effect research in the development of heterogeneous reservoirs in oil and gas reservoirs, and in particular relates to a novel probe method well pattern model water flooding effect measuring device, which is suitable for simulating the water flooding effect experiment of heterogeneous reservoirs, and It is suitable for five-point method (reverse five-point method) well pattern research on heterogeneous reservoir recovery under different injection-production conditions. Background technique [0002] During the development of oil and gas reservoirs, due to the influence of reservoir heterogeneity (such as permeability), there must be some differences in the effect of water flooding in different production layers. At the same time, the pressure control of production wells and injection wells also affects the pressure of oil wells. Productivity, only by correctly understanding the laws of oil-w...

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Problems solved by technology

[0003] At present, the saturation probe method has been widely used in homogeneous models, but it is rarely used in large-scale heterogeneous models. The difficulties in using well pattern models to simulate water flooding effects in heterogeneous reservoirs are as follows: 1 1. It is difficult to ensure the similarity between the simulated reservoir and the real heterogeneous reservoir. The contact relationship between the real heterogeneous reservoir should not be a simple superposition, but should be tight and integrated; 2. For the oil-water reservoir inside the model It is difficult to monitor and describe the distribution and water flooding effect; 3. It is difficult to adjust the wellhead pressure of the well pattern model; 4. The reusability of the heterogeneous reservoir model is low

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