Physical simulator of thick oil thermal extraction based on vacuum method and working method of physical simulator

Abstract

Provided are a physical simulator of thick oil thermal extraction based on a vacuum method and a working method of the physical simulator. The physical simulator comprises a vacuum thermal insulation cabin which can be vacuumized, an experimental model which is arranged in the vacuum thermal insulation cabin and used for injecting steam to simulate a process of the thick oil thermal extraction, a steam generating part and an output liquid recovery pipeline, wherein the experimental model comprises quartz sand, an injection well and a production well, the steam generating part is arranged outside the vacuum thermal insulation cabin and connected with the experimental model through a pipeline, and the output liquid recovery pipeline is used for recovering output liquid in the thick oil thermal extraction process. The physical simulator of thick oil thermal extraction based on a vacuum method and a working method of the physical simulator not only can achieve continuous collection of temperature data at different positions of the experimental model and continuous tracking of the location of a steam-crude oil interface, but also greatly reduce experimental error due to the excellent vacuum insulation performance of the physical simulator, and provide great convenience for direct observation and theoretical analysis of the formation and expansion of a steam chamber in the steam-injected thermal production process of oil; moreover, the obtained experimental results are real and reliable.

Description

technical field [0001] The invention relates to a physical simulation device for heavy oil thermal recovery based on a vacuum method and a working method thereof, and belongs to the technical field of crude oil measurement devices. Background technique [0002] Due to its high colloidal asphaltene content and high viscosity, heavy oil has difficulty in flowing and mining. As the main means of heavy oil recovery, thermal recovery technology has been widely used in various heavy oil reservoirs at home and abroad and has achieved significant production increase effects. Heavy oil thermal recovery technologies mainly include steam huff and puff, steam flooding, SAGD, hot water flooding, oil layer combustion, etc. Among them, steam huff and puff and steam flooding technologies are the most commonly used thermal recovery technologies at present. In order to develop heavy oil by steam injection, many indoor Experimental devices have emerged as the times require, but at present, th...

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Problems solved by technology

Heavy oil thermal recovery technologies mainly include steam huff and puff, steam flooding, SAGD, hot water flooding, oil layer combustion, etc. Among them, steam huff and puff and steam flooding technologies are the most commonly used thermal recovery technologies at present. In order to develop heavy oil by steam injection, many indoor Experimental devices emerged as the times require, but at present, the thermal insulation treatment of steam heat transfer in these devices is not ideal during the experiment process. The heat loss of injected steam is large, and the oil layer cannot be fully added. The experimental results obtained cannot truly reflect the thermal recovery effect.

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