Physical simulation system and experimental method of lithology combination structure controlling oil and gas migration and accumulation
A technology for oil and gas migration and accumulation and physical simulation, which is applied in the field of oil and gas exploration and development, and can solve the problems that cannot reflect the characteristics of the surface shape of the subsurface, control the mechanism of oil and gas migration and accumulation, and cannot reflect the characteristics of oil and gas migration along structural ridges, etc. , to achieve the effect of 3D visualization
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specific Embodiment 1
[0054] Specific embodiment one: as figure 1 As shown, a physical simulation system for oil and gas migration and accumulation controlled by lithological composite structure includes a simulation box 1, a pressure control system connected to the oil injection port 2 and oil outlet 3 of the simulation box 1, and the data connected to the pressure control system Process analysis system4. The simulation box 1 is made of fully transparent tempered glass, which is convenient for observing the process of oil and gas migration and accumulation. chamber, the top and bottom surfaces of each layer of simulation chambers are provided with holes 29 with a diameter of 75 microns, which are effective for preventing leakage of quartz sand with a particle size of more than 200 meshes, but cannot prevent the seepage of oil, gas, and water, so , oil, gas, and water can flow up and down through the top and bottom surfaces of each layer of simulation chambers, making the entire simulation system ...
specific Embodiment 2
[0079] Specific embodiment two: different from the specific embodiment one, in the specific embodiment two, the simulation box 1 includes a lower bottom plate 5, an upper top plate 6 and five layers of simulation chambers installed between the lower bottom plate 5 and the upper top plate 6, wherein, The top and bottom surfaces of the simulation chamber on the topmost layer have no holes, and the top and bottom surfaces of the simulation chambers on the remaining layers are provided with holes 29 with a diameter of 150 microns. The seepage of oil, gas, and water cannot be prevented. Therefore, oil, gas, and water can flow up and down through the top and bottom surfaces of each simulation chamber, making the entire simulation system an effective whole in which fluids can freely penetrate.
[0080] Such as Figure 9 As shown, a four-layer lithological structure configuration model is designed in this embodiment, and the model is composed of drawer II, drawer III, drawer IV, and d...
specific Embodiment 3
[0093] Specific embodiment three: different from the specific embodiment one, in the specific embodiment three, the simulation box 1 includes a lower bottom plate 5, an upper top plate 6 and five layers of simulation chambers installed between the lower bottom plate 5 and the upper top plate 6, wherein, The top and bottom surfaces of the top two simulation chambers have no holes, and the top and bottom surfaces of the remaining simulation chambers are provided with holes 29 with a diameter of 200 microns, which are effective for preventing leakage of quartz sand with a particle size above 75 mesh. But it cannot prevent the seepage of oil, gas, and water. Therefore, oil, gas, and water can flow up and down through the top and bottom surfaces of each simulation chamber, making the entire simulation system an effective whole in which fluids can freely penetrate.
[0094] Such as Figure 13 As shown, a three-layer lithological structure configuration model is designed in this embo...
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