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A drawworks is the primary hoisting machinery component of a rotary drilling rig.Its main function is to provide a means of raising and lowering the traveling block.The wire-rope drill line winds on the drawworks drum and over the crown block to the traveling block, allowing the drill string to be moved up and down as the drum turns.
Gaff rig [1] is a sailing rig (configuration of sails, mast and stays) in which the sail is four-cornered, fore-and-aft rigged, controlled at its peak and, usually, its entire head by a spar (pole) called the gaff. Because of the size and shape of the sail, a gaff rig will have running backstays rather than permanent backstays.
In a drilling rig, the drill line is a multi-thread, twisted wire rope that is threaded or reeved through in typically 6 to 12 parts between the traveling block and crown block to facilitate the lowering and lifting of the drill string into and out of the wellbore. On larger diameter lines, traveling block loads of over a million pounds are ...
The Carolina rig is a fishing rig similar to the Texas rig, but with the sinker weight fixed above the hook instead of sliding down to it. The Carolina rig is suitable for beginning fishers, [ 1 ] and this specific rig is designed to help fishermen catch bottom-feeding fish, particularly black bass . [ 2 ]
Fore-and-aft rigs include: Rigs with one mast: the proa, the catboat, the sloop, the cutter; Rigs with two masts: the ketch, the yawl; Rigs with two or more masts: the schooner; Barques and barquentines are partially square rigged and partially fore-and-aft rigged. A rig which combines both on a foremast is known as a hermaphroditic rig.
The basket is constructed from a group of poles to form a polygon. There are crossbars between the pole members to strengthen their support. The supporting ropes are tied to the top of the basket poles on one end and joined together on the other end at a lower elevation than the top of the basket poles to form the base for the derrick tower.
A gin pole is a mast supported by one or more guy-wires that uses a pulley or block and tackle mounted on its upper end to lift loads. The lower end is braced or set in a shallow hole and positioned so the upper end lies above the object to be lifted. The pole (also known as a mast, boom, or spar) is secured with three
The Texas rig is a fishing rig used for angling with soft plastic lures. [1] [2] It comprises a bullet weight or similar sliding fishing sinker, an offset worm hook, and a soft plastic lure. [3] Diagram of a Texas rig comprising a soft plastic worm (green), bullet weight (grey), hook (black), and fishing line (blue) A Texas-rigged ribbontail worm