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  • Land rigs
    * ''[[Crossover spool]]s'' are metal junctions where the choke and kill lines attach. ...lossary.oilfield.slb.com/en/Terms/a/annulus.aspx annulus] at the crossover spool in the event that heavier mud is needed to control wellbore pressures. The
    12 KB (2,020 words) - 16:19, 20 January 2022
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