奶油水果大蛋糕有剩的吗？
油水混合物有两种状态：油包水（低于30％的低含水率）和水包油（高于30％的高含水率）。
Oil-water mixture has two state: water in oil emulsion (low water content under 30%) and oil in water emulsion(high water content up 30%).
针对有亏空和没有亏空两种情况的油水井，分别采用不同的防砂方法。
According to shortfall and no shortfall oil or water well, methods of sand control were applied respectively.
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