3D Physical Simulation System for Steam Flooding of Heavy Oil Horizontal Wells

Abstract

The invention provides a steam-driven three-dimensional physical simulation system for a thick oil horizontal well. An injection system is used for injecting steam, a chemical agent, gas and saturated oil into a model body; a measuring and controlling system is used for setting the injection system and an output system and acquiring data of each temperature and pressure measuring point inside the model body; the output system is used for finishing well opening, well closing and fixed-pressure production; and a testing oil layer, a pressure sensor, a pressure difference sensor and a thermocouple are arranged in the model body for performing simulation test on the testing oil layer. Due to the adoption of the steam-driven three-dimensional physical simulation system for the thick oil horizontal well, the problems of low pressure, small quantity of temperature testing points, capability of only simulating the influences of each parameter and an injection-production technical way on the steam driving effect under the condition of a vertical well, and the like existing in the prior art are solved, and a horizontal well three-dimensional physical simulation experiment and a three-dimensional physical simulation experiment for increasing the recovery efficiency by adopting a plurality of developing ways can be simulated. The steam-driven three-dimensional physical simulation system has the advantages of wide parameter testing point distribution, high distribution theoretical property, system reliability and safety, easiness for laboratory operation, and the like.

Description

technical field [0001] The invention relates to an indoor test device for steam injection process of oil thermal recovery, in particular to a three-dimensional physical simulation system for heavy oil horizontal well steam flooding. Background technique [0002] The currently used steam flooding 3D physical simulation system mostly adopts a circular structure, with low pressure and few temperature measurement points, and can only simulate different reservoir geological parameters (permeability, oil saturation, porosity, crude oil viscosity, oil layer Heterogeneity) affects the effect of steam flooding, and it is impossible to evaluate the scope of application of horizontal well steam flooding and the feasibility of steam flooding in specific reservoirs. It can only simulate the effect of different injection-production processes and parameters (well pattern, well spacing, steam injection temperature, velocity, dryness, nitrogen foam agent injection method and parameters, perf...

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Problems solved by technology

[0002] The currently used steam flooding 3D physical simulation system mostly adopts a circular structure, with low pressure and few temperature measurement points, and can only simulate different reservoir geological parameters (permeability, oil saturation, porosity, crude oil viscosity, oil layer Heterogeneity) on the effect of steam flooding, it is impossible to evaluate the applicable range of steam flooding in horizontal wells and the feasibility of steam flooding in specific reservoirs

It can only simulate the effect of different injection-production processes and parameters (well pattern, well spacing, steam injection temperature, velocity, dryness, nitrogen foam agent injection method and parameters, perforation method, parameters, etc.) on the steam flooding effect under the condition of vertical wells. It has little guiding effect on on-site reservoir management, and cannot provide experimental basis for field implementation of horizontal wells, nor can it provide basic data for numerical simulation

It is impossible to deeply explore the oil displacement mechanism of horizontal well steam flooding, which directly affects the development prospect of on-site horizontal well steam flooding oil production technology

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