Water body energy three-dimensional physical simulation device and method of bottom water reservoir

Abstract

The invention provides a water body energy three-dimensional physical simulation device and a method of a bottom water reservoir. The water body energy three-dimensional physical simulation device of the bottom water reservoir comprises a model body, a water body middle container, a gas middle container, a displacement pump, a high-pressure gas cylinder, a first six-way valve and a second six-way valve, wherein the displacement pump, the high-pressure gas cylinder, the top end of the water body middle container and the top end and the bottom end of the gas middle container are respectively connected with one valve of the first six-way valve; the bottom end of the water body middle container is connected to the bottom of the model body through the second six-way valve; the displacement pump is used for pumping an external water body into the water body middle container through the first six-way valve; the high-pressure gas cylinder is used for injecting external gas into the gas middle container through the first six-way valve; and the model body is used for accommodating a bottom water oil layer to simulate the bottom water reservoir. The device largely reduces the volume of three-dimensional physical simulation equipment; and the used equipment is simple, and is easy to operate, so that the water body energy three-dimensional physical simulation of the bottom water reservoir can be realized indoors.

Description

technical field [0001] The invention relates to the technical field of petroleum industry, in particular to a three-dimensional physical simulation device and method for water body energy in bottom water reservoirs. Background technique [0002] After the bottom water reservoir is put into production, with the recovery of crude oil, the formation pressure gradually decreases, and the energy of the bottom water is greater than the energy of the oil layer. At the same time, due to the difference in the viscosity of oil and water, the bottom water gradually pushes into the oil layer, causing the oil well to break through water prematurely and increase the oil production rate. Sudden decrease and rapid increase of water cut have seriously affected the normal production of oil wells, resulting in increased water treatment costs and development costs, and poor recovery benefits of bottom water reservoirs. Therefore, it is particularly important to monitor the bottom water advance ...

AI Technical Summary

Problems solved by technology

Two-dimensional simulation experiments can more vividly simulate the process of bottom water advancement in bottom water reservoirs, and can also conduct more realistic evaluation and verification of various factors that affect production well productivity (such as production well location, oil-water viscosity ratio), but two The three-dimensional model can only simulate the situation of "piston" displacement in homogeneous reservoirs, and the simulated bottom water shape is quite different from the real shape, and the conclusions drawn from the experimental observations are only qualitative conclusions

In addition, some parameters related to water bodies are not easy to determine. In practical applications, it is difficult to calculate directly, and they are often obtained from the value of the function table. In this way, continuous data will not be obtained, and the table value must be interpolated. This is not only very troublesome to operate, but also greatly reduces the accuracy, and there are large calculation errors and limitations in value selection.

Therefore, the acquisition and arrangement of these data requires a certain amount of manpower and time, which cannot meet the requirements of rapid indoor three-dimensional physical simulation of water body energy in bottom water reservoirs.

At the same time, this method puts forward high requirements on experimental equipment and experimental design, and it is difficult to meet the needs of the laboratory for bottom water energy simulation.

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