Compléter Drilling Rig1Version en ligne Main components of a drilling line par Tatiana Yaikina 1 block floor derrick Travelling Crown block drilling engines One is the major blocks of the drilling line is a , the construction on four legs standing at the corners of the substructure and reaching to the crown block . is located at the top point of the derrick . moves up or down in the derrick . The heart of the drilling rig is located on a . The drilling line is put into operation by .
Créer jeu