Dynamic Electrical Simulator for Depletion Mining

Abstract

The invention provides a dynamic electricity simulation device used for the depletion-drive development. The dynamic electricity simulation device comprises an oil / gas reservoir simulation system, a low-voltage circuit system and a measurement system. The oil / gas reservoir simulation system comprises an oil / gas layer, a well and a boundary. The low-voltage circuit system applies the voltage between the boundary and the well so as to simulate the energy difference between a reservoir layer and a production well, and is used for simulating the oil / gas yield through the current of the oil / gas layer. The measurement system is used for obtaining voltage data between the boundary and the well and data of the current passing through the oil / gas layer. The low-voltage circuit system provides the unceasingly-degreasing voltage between the boundary and the well so that the non-steady seepage process of the oil / gas reservoir depletion-drive development can be simulated. The low-voltage circuit system can provide the constant pressure between the boundary and the well. The dynamic electricity simulation device can be used for simulating the non-steady seepage process in the depletion-drive development and can be used for simulating the total continuous process of the steady seepage and the non-steady seepage as well.

Description

technical field [0001] The invention relates to the field of oil / gas reservoir resource exploitation, in particular to a dynamic electrical simulation device for depletion exploitation, which can simulate the unsteady seepage process of oil / gas reservoir depletion exploitation. Background technique [0002] The electrical simulation experiment can use the electric field to simulate the seepage law of the formation fluid according to the principle that fluid is similar to electricity. Among them, the mechanism of the principle that fluid is similar to electricity lies in the similarity between the differential equations of fluid flow through porous media and the differential equations of charge flow through conductive materials. In 1933, electrical simulation experiments were first used to study the seepage mechanics of oil / gas reservoirs. Since the electrical simulation device not only has the advantages of simple structure, convenient operation, and low price, but also can...

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Problems solved by technology

[0006] Therefore, there are still two shortcomings in the existing electrical simulation device: one is that it can only simulate the steady seepage process of depleted oil / gas reservoirs, but the actual production wells often cannot achieve this ideal fixed production state (oil / gas production Second, it is impossible to simulate the whole process of depletion production (the total process of stable seepage and unsteady seepage), that is, the whole process of the recoverable oil / gas reserves from the original recoverable oil / gas reserves to the abandonment of wells The third is that it cannot simulate the dynamic process of the continuous reduction of recoverable oil / gas reserves in oil / gas reservoirs as oil / gas is continuously extracted

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