Most oil wells are drilled with rotary method. In this method, a tower holding the drill string, consisting of a series of coupled tubes.
The string attaching it to the bank spins rotating in the floor of the tower. The drill bit at the bottom of the chain usually consists of three bevel-tooth hardened steel. The bit is brought to the surface by a continuous flowing fluid system driven by a pump.
Most oil wells are drilled with rotary method. In this method, a tower holding the drill string, consisting of a series of coupled tubes.
The string attaching it to the bank spins rotating in the floor of the tower. The drill bit at the bottom of the chain usually consists of three bevel-tooth hardened steel. The bit is brought to the surface by a continuous flowing fluid system driven by a pump.