Rotary drilling
18 July 2017
Rotary helper
18 July 2017

Rotary drilling rig

Basically hoisting equipment, prime movers, and auxiliary equipment necessary to well drilling. Includes: rotary table, draw-works, kelly, swivel, hook, blocks, line, engines, mud pumps, and piping, (steel mud pits, if used) utilities unit, dog house, tool house, mud house, etc., and electric generators, motors, and wiring if used.