Blowout preventers

Question 1

Purpose of Blowout Preventer

Answer 1

Regulating pressure is extremely important.

First line of defense: Mud/Drilling fluid

• •Cleanses drill bit
• •Clears cuttings
• •Helps maintain pressure

Question 2

Kicks are often caused by:

Answer 2

• Fluid pressure from reservoir
• Tripping out too quickly

Question 3

Steps in Controlling Well Hole

Answer 3

Shut In – Driller tries to seal the hole at the control panel

.Annular BOP – closed first at the top of the well bore. Closes around pipes

.Mud returns/Choke – kick fluids diverted away from rig

Blind Ram Preventers – Seal open hole

Shear Ram Preventers– Cuts pipe (like scissors) to seal hole and move rig away. Last resort in extreme situation (like a hurricane)

Question 4

Structure of Blowout Preventer

Answer 4

1- annular BOP (annulus=ring)

2- Blind Ram BOP (sliding doors)

3- shear ram BOP (scissors)

Question 5

What happens to Kick Mud?

Answer 5

1. Fluid diverted to choke line
2. Fluid goes to Mud/Gas separator
3. Mud goes back to mud pit
4. Gas is burned off with flares