PGE 362 Midterm Exam Solution

PGE 362 Midterm Exam Solution - Name: _ PGE 362 Production...

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Name: ____________________________ PGE 362 Production Engineering Midterm Exam Solution You have 2 hours to complete this exam. It is closed book and closed notes. You will need your calculator and pen or pencil. You must work alone. There is an equation page attached at the back of the exam. Please be sure to use the units listed on the equation page in the equations. The equations shown should be used to answer the exam questions. Please do not ask any questions. If you believe something has been omitted, specify your assumptions and continue to work the problem. Please turn off all electronic devices except your calculator. You may not leave the room during the exam unless you are finished. Please SHOW all work.

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(1) (+2 pts) A permanent packer is in a well with the tubing latched into the top of the packer. The packer has a differential pressure rating of 5,000 psi. The fluid above the packer is 10 ppg (0.52 psi/ft) brine. The well is to be used as an injection well where 10 ppg brine is to be injected into the formation. Assume no pressure above the packer in the annulus is applied at the surface. The packer has an outer diameter of 5" and the seals have 2.441" internal diameter and 3.5" outer diameter. What is the maximum pressure that can be applied at the bottom of the well, underneath the packer, before the packer differential pressure rating is exceeded? As the fluid above and below the packer is identical and no surface pressure is applied to the annulus, the pressure under the packer can be as high as 5,000 psi. Grading: full credit if the result of 5,000 psi is shown. Some students many compute this as the pressure at the surface in the tubing. This is also an acceptable answer. If a student sets the problem up in the following way, but then makes a mistake, give half
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This note was uploaded on 02/13/2012 for the course PGE 362 taught by Professor Bommer during the Spring '08 term at University of Texas at Austin.

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PGE 362 Midterm Exam Solution - Name: _ PGE 362 Production...

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