According to the type of disconnection switch and the method of feeder automation, the mathematic model of disconnection switch placement was built for distribution networks in the oil field.
结合油田配电网的分段开关类型和馈线自动化方式，给出了配电网开关配置的数学模型。
A new type of hydraulic control switch with circular adjustment for blocking water in oil well is developed.
研制了一种新型液压控制可循环调层的堵水开关。
A new type of hydraulic control switch with circular adjustment for blocking water in oil well is developed.
研制了一种新型液压控制可循环调层的堵水开关。
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