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Chock manifold and kill manifold are used in well control to reduce the pressure from the well. Choke Manifold issued to execute new drilling-well’s technique of balance pressure. Choke Manifold can avoid pollution of oil-layer and improve the speed of drilling and control blowout effectively. The choke manifold consists of choke valves, gate valves, line pipes, fittings, pressure gauges and other components.
Kill manifold in well-control system is to pump drilling fluid into well barrel or inject the water into wellhead.
Chock manifold is usually used together with mud gas separator (also called poor boy degasser), some jobsites will install them together on one skid for easy transportation. Pls see the photo below: mud gas separator with chock manifold on skid.