18 July 2017
(also, “drilling margin”) The drillable pressure profile, bounded on the low side by formation pressure, below which formation fluids will enter the wellbore, and on the […]
18 July 2017
A ship constructed to permit a well to be drilled from it at an offshore location. Although not as stable as semisubmersible MODUs, drillships are capable […]
18 July 2017
Device used to transmit torque from the rotary table to the kelly but allow vertical movement of the kelly while drilling. It may have pins fitting […]
18 July 2017
1) a cylinder around which wire rope is wound in the drawworks. The drawworks drum is that part of the hoist on which the drilling line […]