Choke and kill manifolds are key surface systems in well control. The choke manifold routes and chokes well returns during controlled bleed-off and circulation. The kill manifold provides a controlled path for pumping kill-weight drilling fluid into the well through the kill line.
A choke manifold typically includes manual or hydraulic choke valves, gate valves, pressure gauges, flanged or union connections, and high-pressure pipework. Fixed chokes and adjustable chokes may be selected according to the well-control procedure.
A kill manifold is connected to the BOP stack through kill lines. It must be rated for the expected working pressure and compatible with the well fluid, temperature, and sour-service environment.
For international projects, define the contractually applicable API Spec 16C edition and product-specific requirements. The order should state nominal bore, rated working pressure, end connection, material and temperature classes, PSL and performance requirement. For sour service, provide the environmental data required for NACE MR0175/ISO 15156 material selection.
