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PETROLEUM ENGINEERING

Construct a wellbore diagram given the following information:
13 3/8 “ casing @ 545 ft
8 5/8” casing @ 2650 ft
4 1/2” production casing @4800 ft
2 3/8” Tbg set on packer @4630 ft with 40 ft tailpipe
Target sand @ 4700-4800
Perforations @ 4720-4780 4 shots/ft
Total depth@ 4900 ft
Cement yield 1.18 cu ft/sk Class A 15.0 ppg
The hole size is 7 7/8” used to drill to TD
A 12.5 ppg drilling mud was used to drill well

  1. Calculate cement fillup in sacks on 4 1/2” x 8 5/8” casing and 7 7/8” hole“ back to 2300 ft?
  2. How many bbls displacement volume on 4.5” casing to place cement?
  3. What is the hydrostatic pressure on the formation at 4750 ft once the top cement plug is landed?

Sample Solution

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