String up:

One end of the line is secured to the hoisting drum and the other to the derrick substructure.

Terms Related to String up

• Block

  An assembly of pulleys on a common framework; in mechanics, one or more pulleys, or sheaves, mounted to rotate on a common axis. The crown ...

• Reeve the line

  To string a wire rope drilling line through the sheaves of the traveling and crown blocks to the hoisting drum.

• Traveling 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.

• Derrick

  A large load-bearing structure, usually of bolted construction. In drilling, the standard derrick has four legs standing at the corners of the substructure and reaching ...

• Crown block

  The set of pulleys or sheaves at the top of the mast on a rig.

• Sky-top mast

  A mast on a well servicing unit that utilizes a split traveling block and crown block, which makes it possible to pull 60-foot stands with ...

• Brake band

  A part of the brake mechanism consisting of a flexible steel band lined with a material that grips a drum when tightened. On a drilling ...