The configuration and principle of anti rotary plug and necessary float collars and their applications in intermediate casing cementing are introduced.
2
随着顶部胶塞通过胶塞定位浮箍达到相应浮箍位置，水泥在压力指示确认下完成顶替过程。
Cement was displaced with pressure indications observed as the top plugs passed through the plug-locator collar and the top wiper plugs bumped on the respective float collars.
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