A device with either a fixed or variable aperture used to control the rate of flow of liquids and/or gas.
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
Equipment used to restrict and control the flow of fluids.
Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
Equipment used to restrict and control the flow of fluids and gas.
Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards
A device with a fixed (positive) or variable (adjustable) orifice installed in a line to restrict the flow and control the rate of production from the well.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards