The high-pressure piping between BOP outlets or wellhead outlets and the choke manifold.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
A high-pressure line connected below a BOP to transmit well fluid flow to the choke manifold during well control operations.
Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. Global Standards
“Choke line” means an extension of pipe from the blowout preventer which is used to direct well fluid from the annulus to the choke manifold.
[Mich. Admin. Code R 408 (2013)].
Source: Oil and Gas Drilling and Servicing Operations, Michigan Administrative Code R 408, February 8, 2013. Regulations