User:Mackieg4/Drilling rig

Underwater Drilling Rig
https://www.youtube.com/watch?v=Do9dz6ypD7w

Go down to 9000 feet deep

Directly above the reservoir

A drilling rig is required to drill a well

The rig can be on a drill ship, a semi-submersible vessel, or part of a floating production platform

Blowout preventer BOP stack and a pump to circulate fluids in and out while the well is being drilled

Drilling mud is used to lift rock cuttings from the hole, keep the drill bit cool and lubricated, fill the well bore with fluid to equalize pressure and prevent water or other fluids from flowing into the well bore

Clay for thickness and fine ground rock/barite for weight

Then a smaller pipe or casing string is screwed together, connected to the drill pipe, and is lowered even further down to the seafloor and pumped into the well. To permanently secure it, cement followed by mud is then pumped down the inside of the drill pipe then the plug is used so the cement will fill the outside and keep the pipe in place, this is repeated with a smaller pipe or casing string. Before going any deeper, a blowout preventer on a riser will be installed at the seafloor. Valves and rams that protect the rig and environment from gas and oil flows, in case the weight of the drilling mud is too low

If it is favorable for future development, the entire process with a small pipe and casing will be repeated