Underground fluid migration simulation experiment system and method

Abstract

The invention discloses an underground fluid migration simulation experiment system and method. The underground fluid migration simulation experiment system comprises a stratum model, a liquid collector, a first storage tank filled with sufficient clear water or dyeing fracturing fluid and a second storage tank filled with sufficient dyeing solution or petroleum, wherein the outlet ends of the first storage tank and the second storage tank are connected to a water injection port of the stratum model through a first filter, a first pump, a first pressure gauge, a third thermometer and a first flowmeter in sequence; a water outlet of the stratum model is connected to the liquid collector through a second filter, a second flowmeter, a second pressure gauge, a second pump and a fourth thermometer in sequence; a light source is arranged on one side of the stratum model; a camera is arranged on one side opposite to the light source; and the stratum model adopts a three-dimensional model or a two-dimensional model. The underground fluid migration simulation experiment system is suitable for the fields of oil and gas exploitation and underground water exploitation, is wide in application range, and can provide powerful scientific basis for production research.

Description

technical field [0001] The invention relates to the fields of mining, geothermal, and oil and gas development, in particular to an underground fluid migration simulation experiment system and method. Background technique [0002] In the process of mining, geothermal development, and oil and gas development, it is usually necessary to simulate and predict the migration law of underground fluids, and accurately grasp the laws of underground fluid migration, flow field distribution, and temperature field distribution. Improving production efficiency is of great significance. [0003] Geothermal energy is a green, low-carbon, renewable resource that can be recycled and has the characteristics of large reserves, wide distribution, clean and environmentally friendly, good stability, and high utilization coefficient. Geothermal development needs to strictly follow the principles of "recharge of raw water in the same layer" and "determined mining by tank". [0004] Oilfields have ...

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Problems solved by technology

Among them: During the actual application of numerical simulation technology, it is found that it is difficult to simulate the actual stratum structure, and cannot accurately reflect the changes in the groundwater flow field, resulting in inaccurate prediction results and affecting subsequent construction progress

The fracturing fracture monitoring methods mainly include: microseismic monitoring, ground tiltmeter logging, fracturing model, isotope tracer logging, etc.; these methods have their own limitations in practical application, and the positioning accuracy of ground monitoring is low, or for specific The formation effect is not good, and the fracture evaluation problem in the fracturing process cannot be solved well

[0006] At present, there are few equipments for simulating the movement of subsurface fluids, and all of them have some technical shortcomings: (1) The equipment for simulating formations is opaque, and cannot directly observe the movement of fluids inside the formations in three-dimensional space; (2) The materials for simulating formations cannot be real Simulate the actual stratum structure; (3) The material for simulating the stratum cannot simulate the fracture development degree of the stratum; (4) The material for simulating the stratum cannot simulate the karst development degree of the limestone stratum; The effect of migration laws

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