Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof

Abstract

The invention relates to the field of oil-gas field development, in particular to a large bottom water sandstone oil reservoir development physical simulation experiment device and a working method thereof. A model body is used for constructing an oil layer and a water layer, a bottom water system is used for simulating bottom water energy, the model body is connected with a resistivity meter, and the resistivity meter is connected with a data processing system; an injection system is connected with the model body and used for injecting water or chemical agents for well stimulation into the model body; a mining system is connected with the model body and used for controlling the mining pressure and speed; the data processing system is further connected with the injection system and the mining system separately, monitors changes of a pressure field and a saturation field in real time and controls the mining system. According to the large bottom water sandstone oil reservoir development physical simulation experiment device and the working method thereof, oil and water distribution and pressure distribution of a large bottom water sandstone oil reservoir in the natural energy mining process, the water injection mining process and the well stimulation mining process can be simulated, and a reliable physical simulation model and method are provided for study of the seepage law and the well stimulation effect of the large bottom water sandstone oil reservoir.

Description

technical field [0001] The invention relates to the field of oil and gas field development, in particular to a physical simulation experiment device for the development of large bottom water sandstone reservoirs and a working method thereof. [0002] technical background [0003] Bottom-water sandstone reservoirs are relatively common types of reservoirs, and bottom-water coning or ridges are prone to occur after production, resulting in high water cut in a short period of time, low producing degree of reservoir reserves, and poor development effect. In order to study the remaining oil distribution and stimulation measures in bottom water reservoirs, indoor physical simulation experiments are essential, which play an important role in determining the optimal injection-production mode, the relative position of control and displacement agent injection, and the injection amount of control and displacement agent. In recent years, there have been many studies on the development ph...

AI Technical Summary

Problems solved by technology

In recent years, there have been many studies on the development physical models and simulation methods of sandstone reservoirs with large bottom water, but there are the following deficiencies: (1) Most of them are based on two-dimensional visualization panels, and the development process of bottom water reservoirs cannot be studied from a three-dimensional scale; ( 2) It is not possible to study the lateral displacement under the presence of bottom water energy at the same time, and most models can only study bottom water flooding or lateral displacement; (3) When the model has a certain pressure, some models have saturation (4) Most of the models do not consider the situation of the oil-water layer, and most of them focus on fully saturated oil, so it is difficult to form a good oil-water layer; (5) Currently, the models developed in the market Most of the models are covered with cemented sand resin, the number of reuses is limited, and materials are wasted

But what adopt is cemented fixed model, and can only simulate bottom water drive, the development situation of horizontal well or vertical well, have not considered the situation of model geological parameter change and existence water injection well; The device and method only provide a train of thought for bottom water simulation, and do not involve the establishment of three-dimensional models and simulated reservoir conditions; CN203239338U discloses a two-dimensional artificial core model for studying the law of water invasion in edge and bottom water reservoirs. The model does not have a thickness dimension, which is quite different from the actual formation; CN102797458A discloses a three-dimensional simulation device for edge-bottom water reservoirs. The side of the model is movable and detachable, but the oil-water layer is difficult to fill, and a large amount of gas is easily generated during the formation of the oil-water layer It is sealed inside the model, and the model is invisible, and the oil-water level and production situation cannot be observed

[0005] However, the above-mentioned physical simulation experiment devices for the development of sandstone reservoirs with bottom water only simply consider some characteristics of the reservoir for simulation. Developing simulations of physical experiments poses certain difficulties

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