1. Rotary system is the one responsible for? a) Lowering and lifting the drill string b) Rotating the drill string c) Ci

[answerhappygod]

1. Rotary system is the one responsible for?
a) Lowering and lifting the drill stringb) Rotating the drill stringc) Circulating mudd) Providing other drilling systems with power 2. Well controlsystem operates with?
a) hydraulic power from accumulators
b) Power provided by power system
c) Hydraulic power provided by circulation system
d) none of the above
3.Keeping the neutral point in the drill collars means the WOBis smaller than
a) Weight of drill collars in airb) Apparent weight of drill collars in drilling mud c) Weight ofdrill stringd) all the above