A series of defects exist in the cup circulation pack sand control tools and slip filling sand control tools currently used in Binnan unconsolidated sandstone reservoir.

针对滨南采油厂疏松砂岩出砂油藏所用皮碗式循环充填防砂工具和卡瓦式充填防砂工具存在的一系列弊端，研制应用了新型无卡瓦胶筒式循环充填工具。

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Every convenience is thought of, and the milk or cream is put in an external stainless steel reservoir the size of a travel coffee cup, which you can keep in the fridge all week, keeps the milk fresher than the container it came in, and easily snaps on when you want milky drinks.

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