In circle triangle expression liquid flow direction, if the triangle acme outward, showed the liquid flow outputs outward, expressed this is an oil pump.

圆圈中的三角形表示液流方向，如果三角形尖端向外，说明液流向外输出，表示这是油泵。

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Accurately deriving the true liquid flow velocity is the key for determining the stratification flow rate of oil and water and logging interpretation of liquid producing profile.

准确求取流体的真实流动速度是确定油水各相分层流量及产液剖面测井解释的关键。

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Based on the flow mechanism and performance of gas liquid two phase plug flow in oil gas gathering line, a slug unit are divided into both gas slug region with liquid film and liquid slug region.

针对油气集输管线中气液两相团状流的流动机理和特点，将每一段塞单元划分为带液层的气塞区和液塞区两个区域。

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