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Unformatted text preview: Drilling Engineering PGE 430 Hour Exam 2 You may use an electronic calculator only. No other electric devices are allowed. Please turn off communication devices. The exam is closed book, closed notes. You may attach extra paper if needed to your exam. The equation page is attached, you may not bring your own equation page. Please do not ask any questions. Do the best you can. If you feel something must be assumed or estimated, please do so and note in your work. You may not leave the room unless you are finished. Total Score Possible = 100. (1) (30 pts) Please demonstrate which hydraulics optimization technique uses the lowest flow rate, maximum hydraulic horsepower at the bit or maximum jet impact force at the bit. In general the total pump pressure equals the pressure loss at the bit and the pressure loss due to friction in the drill string and in the annulus. 75 . 1 Kq p p p p d d b p = + = To maximize hydraulic horsepower at the bit: ( 29 75 . 1 75 . 1 56 ....
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This note was uploaded on 04/08/2008 for the course PGE 430 taught by Professor Chenevert during the Spring '06 term at University of Texas at Austin.
- Spring '06