Throttling and well-killing manifolds

Choke manifold: An essential device for controlling well kicks and implementing oil and gas well pressure control technology. With the blowout preventer (BOP) closed, the choke valve is used to control a certain casing pressure to maintain the bottom hole pressure slightly higher than the formation pressure, preventing further inflow of formation fluids into the well. Additionally, during well shut-in, the choke manifold can be used to release pressure for a soft shut-in. When the well pressure rises to a certain limit, it is used to release pressure and protect the wellhead.
Kill manifold: When the wellhead pressure rises, heavy drilling fluid can be pumped into the well through the kill manifold to balance the bottom hole pressure and prevent well kicks and blowouts; it can also be used for direct pressure release via the connected venting line; and it can be used to inject clean water and fire extinguishing agents into the wellhead for cementing operations. Through the one-way valve of the kill manifold, kill fluid or other fluids can only be injected into the well and cannot flow back, achieving the purpose of well control and other operations.