HWK 1 solution-1 - PGE 430 Drilling Homework 1 Solution Due...

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PGE 430 Drilling Homework 1 Solution Due at lecture time: W 9/9/09 (total possible score: 10.0) (1) A draw works is rated at 1500 input Hp. The maximum load that can be picked up is 1,000,000 lbs on 12 lines. Please show the equations required and prepare a table of results to show: (a) The velocity of the blocks (ft/min) for weights starting at 1,000,000 lbs and descending 100,000 lb increments. ( 29 ( 29 33,000 1500 0.77 33,000 38.1 ft/min 1,000,000 i b PE v W = = = (b) The velocity of the fast line. ( 29 12 38.1 457.2 ft/min f b v nv = = = (c) The required draw works drum speed in revolutions per minute (rpm) if the drum is 5’ in diameter. ( 29 2 ft revolution 457.2 29.1 rpm 2 min ft 5 D f D v v d π = = = Note that the drum cannot be turned faster than 100 rpm. Do one example calculation at 1,000,000 lbs. (+1 pt for sample calculations) The other results can be in the table. (+1 pt for correct table) W (lbf) Vb (ft/min) Vf (ft/min) drum rpm 1,000,000 38.1 457.4 29.1 900,000 42.4
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This note was uploaded on 02/13/2012 for the course PGE 430 taught by Professor Chenevert during the Spring '06 term at University of Texas at Austin.

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HWK 1 solution-1 - PGE 430 Drilling Homework 1 Solution Due...

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