While drilling a well cuts through the rock ... The widest type of casing is called conductor pipe, and it usually is about 30 to 42 inches in diameter for offshore wells and 16 inches in diameter ...

After a well has been drilled, should the drilling fluids be removed ... the different levels include production casing, intermediate casing, surface casing and conductor casing.

casing was set ... the rig will be utilized to drill the top-hole sections and set the conductor(s) on the Chatham and/or Jayne East projects. “It is anticipated that the repairs to the BOP ...