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stem

1. n. [Well Workover and Intervention]

The weight bar used in slickline operations to overcome the effects of wellhead pressure and friction at the surface seal where the wire enters the wellbore. In addition to a solid steel stem, a special high-density stem is available with internal cavities filled with lead, tungsten or mercury alloys.

2. n. [Production]

A rod or shaft transmitting motion from an operator to the closure element of a valve.

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