Trap
18 July 2017Tricone bit
18 July 2017Traveling block
An arrangement of pulleys, or sheaves, through which drilling line is reeved and which moves up and down in the derrick or mast. See block.
Trap
18 July 2017Tricone bit
18 July 2017
Trap
18 July 2017Tricone bit
18 July 2017Trap
18 July 2017Tricone bit
18 July 2017An arrangement of pulleys, or sheaves, through which drilling line is reeved and which moves up and down in the derrick or mast. See block.
