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- Draw-works abstract "A draw-works is the primary hoisting machinery that is a component of a rotary drilling rig. Its main function is to provide a means of raising and lowering the traveling blocks. The wire-rope drilling line winds on the drawworks drum and extends to the crown block and traveling blocks, allowing the drill string to be moved up and down as the drum turns. The segment of drilling line from the draw-works to the crown block is called the \"fast line\". The drilling line then enters the sheaves of the crown block and it makes several passes between the crown block and traveling block pulleys for mechanical advantage. The line then exits the last sheave on the crown block and is fastened to a derrick leg on the other side of the rig floor. This section of drilling line is called the \"dead line\".A modern draw-works consists of five main parts: the drum, the motor(s), the reduction gear, the brake, and the auxiliary brake. The motors can be AC or DC-motors, or the draw-works may be connected directly to diesel engines using metal chain-like belts. The number of gears could be one, two or three speed combinations. The main brake, usually operated manually by a long handle, may be friction band brake, a disc brake or a modified clutch. It serves as a parking brake when no motion is desired. The auxiliary brake is connected to the drum, and absorbs the energy released as heavy loads are lowered. This brake may use eddy current rotors or water-turbine-like apparatus to convert to heat the kinetic energy of a downward-moving load being stopped.Power catheads (winches) located on each side provide the means of actuating the tongs used to couple and uncouple threaded pipe members. Outboard catheads can be used manually with ropes for various small hoisting jobs around the rig.The drawworks often has a pulley drive arrangement on the front side to provide turning power to the rotary table, although on many rigs the rotary table is independently powered. Drawworks can be used to hoist or lower several hundred thousand pounds of weight and can come in AC, DC or mechanical power units. Horsepower ratings for drawworks can also have a wide range, often ranging from 1000 HP to over 3000 HP.".
- Draw-works wikiPageExternalLink Display.cfm?Term=drawworks.
- Draw-works wikiPageID "24225786".
- Draw-works wikiPageLength "2864".
- Draw-works wikiPageOutDegree "17".
- Draw-works wikiPageRevisionID "672477518".
- Draw-works wikiPageWikiLink Alternating_current.
- Draw-works wikiPageWikiLink Category:Drilling_technology.
- Draw-works wikiPageWikiLink Clutch.
- Draw-works wikiPageWikiLink Crown_block.
- Draw-works wikiPageWikiLink Derrick.
- Draw-works wikiPageWikiLink Direct_current.
- Draw-works wikiPageWikiLink Disc_brake.
- Draw-works wikiPageWikiLink Drill_floor.
- Draw-works wikiPageWikiLink Drilling_rig.
- Draw-works wikiPageWikiLink Electric_motor.
- Draw-works wikiPageWikiLink Gear.
- Draw-works wikiPageWikiLink Mechanical_advantage.
- Draw-works wikiPageWikiLink Pulley.
- Draw-works wikiPageWikiLink Rotary_table_(drilling_rig).
- Draw-works wikiPageWikiLink Schlumberger.
- Draw-works wikiPageWikiLink Traveling_block.
- Draw-works wikiPageWikiLink Winch.
- Draw-works wikiPageWikiLinkText "Draw-works".
- Draw-works wikiPageWikiLinkText "draw works".
- Draw-works wikiPageUsesTemplate Template:Multiple_issues.
- Draw-works wikiPageUsesTemplate Template:No_footnotes.
- Draw-works wikiPageUsesTemplate Template:Notability.
- Draw-works wikiPageUsesTemplate Template:Reflist.
- Draw-works wikiPageUsesTemplate Template:Unreferenced.
- Draw-works subject Category:Drilling_technology.
- Draw-works hypernym Machinery.
- Draw-works type Company.
- Draw-works type Redirect.
- Draw-works comment "A draw-works is the primary hoisting machinery that is a component of a rotary drilling rig. Its main function is to provide a means of raising and lowering the traveling blocks. The wire-rope drilling line winds on the drawworks drum and extends to the crown block and traveling blocks, allowing the drill string to be moved up and down as the drum turns. The segment of drilling line from the draw-works to the crown block is called the \"fast line\".".
- Draw-works label "Draw-works".
- Draw-works sameAs Q1549806.
- Draw-works sameAs Hebewerk_(Bohranlage).
- Draw-works sameAs Wyciąg_wiertniczy.
- Draw-works sameAs m.07kd634.
- Draw-works sameAs Бурова_лебідка.
- Draw-works sameAs Q1549806.
- Draw-works wasDerivedFrom Draw-works?oldid=672477518.
- Draw-works isPrimaryTopicOf Draw-works.