泡沫在裂縫中流動(dòng)特征的物理模擬
[Abstract]:According to the flow characteristics of foam fluid, the rock fracture model and visual fracture model are designed, and the flow characteristics of foam in fracture are studied and compared with gas-liquid two-phase flow. The results show that in the visual fracture model, when the gas-liquid ratio increases, the gas-liquid two-phase flow is easy to form a gas channeling zone, which leads to the enhancement of the overall mobility of the two-phase flow, while the resistance of foam migration increases. When the velocity increases, the pressure gradient of the gas-liquid two-phase flow increases linearly, while in the low-speed stage, the pressure gradient increases relatively. The roughness of cracks will change the microstructure of foam and then affect the flow characteristics of foam. In the rock fracture model, when the gas-liquid ratio is low, the flow resistance of gas-liquid two-phase flow increases with the increase of gas-liquid ratio. When the gas-liquid ratio is greater than 2.5, the pressure gradient of gas-liquid two-phase flow begins to decrease with the increase of gas-liquid ratio, and the pressure gradient of foam flow is higher than that of two-phase flow under different gas-liquid ratio, and the pressure gradient of foam flow increases linearly with the increase of gas-liquid ratio, and when the injection velocity increases, the pressure gradient of two-phase flow and foam flow increases linearly.
【作者單位】: 中國(guó)石油大學(xué)(華東)石油工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金資助項(xiàng)目(51574264) 山東省自然科學(xué)基金資助項(xiàng)目(ZR2015EL015) 國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)項(xiàng)目(2013AA064803) 國(guó)家科技重大專項(xiàng)(2011ZX05051003)~~
【分類號(hào)】:TE357.46
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