Choke 11
Choke 11 :
A type of orifice installed in a line to restrict flow and control the rate of production. Surface chokes are a part of the Christmas tree and contain a choke nipple, or bean, with a small-diameter bore An orifice) that serves to restrict the flow. Also, chokes are used to control the rate of flow of the drilling mud out of the hole when the well is closed in with the blowout preventer and a "kick" is being circulated out of the hole. (See: Adjustable Choke, Bottom-Hole Choke, and Positive Choke.) (WLOP)
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