Visualized two-dimensional physical simulation experiment device for thermal thickened-oil extraction

Abstract

The invention discloses a visualized two-dimensional physical simulation experiment device for thermal thickened-oil extraction. The visualized two-dimensional physical simulation experiment device comprises an injection system, a model system and a data acquisition and processing system which are connected in sequence, wherein the model system comprises an installing rack and a model body installed on the installing rack, the injection system comprises a simulation liquid injection unit and a multi-element hot fluid injection unit, and the data acquisition and processing system comprises a data acquisition board, a gas mass flow controller, a temperature sensor, a pressure sensor, an image pickup device corresponding to a high-pressure visual window and an automatic product liquid metering balance communicated with the model body. The multi-element hot fluid injection unit comprises a multi-element hot fluid gas source, a gas supercharging device, a high-pressure storage tank and a gas flow controller which are connected in sequence and is finally communicated to a simulating vertical well. The experiment device can simulate and carry out indoor simulation of a specific oil reservoir in the above developing mode and optimization of exploitation effect influence study.

Description

technical field [0001] The invention belongs to experimental equipment in the field of petroleum development, in particular to a visual two-dimensional physical simulation experimental device for thermal recovery of heavy oil. Background technique [0002] With the decline of oilfield reserves, heavy oil has gradually become an important energy supplement in the future. The world's heavy oil resources are extremely rich, accounting for about 60% of petroleum resources. Heavy oil has the characteristics of high viscosity, high density, and difficult flow. During the exploitation of heavy oil reservoirs, most of the oil thermal recovery methods are used to reduce viscosity to increase fluidity. SAGD technology is an effective development method for heavy oil production. Its mechanism is to inject high-dryness steam into the steam injection well, and the steam will overlap upwards in the formation to form a steam cavity, and the steam cavity will expand upward and sideways to g...

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Problems solved by technology

The conventional two-dimensional plane physical model is used to simulate the plane flow state of the fluid and the distribution of the fluid pressure, and cannot directly observe the dynamic observation of the oil displacement process, such as the diffusion of steam and solvent in Vapex technology, the formation of foam during high-temperature foam flooding, It is difficult to describe the state and distribution of the fluid in the model due to phenomena such as migration and diffusion, so it is impossible to provide a basis for numerical simulation and field tests, and it is impossible to study the mechanisms of various displacement processes

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