Oilfield Blocks are available in many different sizes, capacities and types. The set of sheaves that move up and down in the derrick. The wire rope threaded through them is threaded back to the stationary crown blocks located on the top of the derrick. This pulley system gives great mechanical advantage to the action of the wire rope drilling line, allowing heavy loads to be lifted out of or lowered into the hole.
Traveling Block Manufacturers
AMERICAN BLOCK, CONTINENTAL EMSCO, DRECO, GARDNER DENVER, IDEAL, IDECO, LE TOURNEAU, MCKISSICK, NATIONAL, NATIONAL OILWELL, SHAFFER, WILSON