Material and method for manufacturing carbonate cave oil reservoir physical model

Abstract

The invention relates to a material and a method for manufacturing a carbonate cave oil reservoir physical model. The material is characterized by comprising a manufacturing main body material for cracks and caves in the physical model and a physical model skeleton material, wherein the manufacturing main body material for cracks and caves in the physical model is selected from wood's alloy and / or paraffin. The method comprises the following steps of: 1) manufacturing models of caves and cracks of different sizes and shapes by using the wood's alloy and / or the paraffin; and 2) after the models are formed, displacing the wood's alloy and / or the paraffin at the temperature of higher than 85 DEG C to obtain a crack cave with spatial structure. The manufactured physical model accords with the characteristics of carbonate cave oil reservoir and supplies reliable guarantee for developing various physical simulation experiments.

Description

technical field [0001] The invention relates to a physical model and a physical simulation experiment used in the field of oil and gas field development, in particular to a material and a manufacturing method for making a physical model of a carbonate rock fracture-cavity reservoir. Background technique [0002] Carbonate fracture-vuggy oil and gas reservoirs are an important resource replacement position and strategic direction in my country. However, due to its extremely complex structure, reservoir, oil-water relationship, etc., many difficulties were encountered in the development process. The main manifestations are: it is difficult to accurately describe the distribution of reservoirs and fluids; the productivity, water production, and energy change characteristics of fracture-vug systems are complex; the methods and technical measures for artificial energy supplementation are difficult to determine; oil-water well stimulation measures and enhanced oil recovery technol...

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Problems solved by technology

[0007] The second article: "Plane Model for Visual Physical Simulation of Oil Displacement", patent number, 01261327.4, this patent is a plane visual physical model, which is mainly made of glass depiction or etching, and is a low pressure model, not used for high temperature and high pressure Under the physical simulation experiment

[0008] Through comparison, it can be concluded that most of the existing artificial fracture-cavity physical models are used to improve the success rate of exploration of reservoirs and oil and gas reservoirs or to conduct simulation experiments under low pressure conditions. The surface properties of fractures and caves are quite different from those of real reservoir rocks. Other models applied to the development of fractured-cavity carbonate reservoirs and the evaluation of enhanced oil recovery can only be used for qualitative experimental research under low pressure, and cannot be used for physical simulation experiments under reservoir temperature and pressure conditions.

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