Device and method for three-dimensional physical simulation of water body energy in bottom water reservoirs

Abstract

The invention provides a three-dimensional physical simulation device and method for water body energy in bottom water reservoirs. The three-dimensional physical simulation device for water body energy in bottom water reservoirs includes a model body, a water body intermediate container, a gas intermediate container, a displacement pump, a high-pressure gas cylinder, The first six-way valve and the second six-way valve; the displacement pump, the high-pressure gas cylinder, the top of the water body intermediate container, the top and the bottom of the gas intermediate container are respectively connected to one of the valves of the first six-way valve; the water body intermediate container The bottom end of the pump is connected to the bottom of the model body through the second six-way valve; the displacement pump is used to pump the external water body into the water body intermediate container through the first six-way valve; the high-pressure gas cylinder is used to pass the external gas through the first six-way valve The intermediate container for injecting gas; the model body is used to accommodate the bottom water oil layer to simulate the bottom water oil reservoir. The invention greatly reduces the volume of the three-dimensional physical simulation equipment, and the equipment used is simple and easy to operate, so that the three-dimensional physical simulation of the water body energy 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 of water body energy in bottom water oil reservoirs. Background technique [0002] After the bottom water reservoir is put into production, with the production of crude oil, the formation pressure gradually decreases, and the energy of the bottom water is greater than that of the oil layer. At the same time, due to the difference in oil and water viscosity, the bottom water gradually advances to the oil layer, causing the oil well to see water prematurely and oil production. The sudden drop and the rapid rise of water cut seriously affect the normal production of oil wells, and lead to the increase of water treatment costs and development costs, and the deterioration of bottom-water reservoir production efficiency. Therefore, it is particularly important to monitor the bottom water advancement in bottom water re...

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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