BOP Equipment

What should be the Rated Working Pressure of the BOP Stack as per API?

a.  Maximum anticipated MAASP

b.  Maximum anticipated Pore Pressure

c.  Maximum anticipated Surface Pressure

d.  Maximum anticipated Hydraulic Pressure

e.  Maximum anticipated Pressure Loss in the system

f.  Maximum anticipated Bottom Hole Pressure

Pressure Testing

Cup Type Tester

Max pressure test?

•13 3/8” 68 # K55 Casing (ID 12.415”)

•OD Mandrel CTT = 6.25”

•P/T on csg. with 5” 19.5 # DP?

Grade E DP in use.

(Min yield 395k lbs use 85% of maximum )

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Cup Type Tester

Max pressure test?

Max Pressure = Max Force / Area

Area   = p (ID2 – OD2) / 4

Area   = p (12.4152 – 52) / 4

 

  = 101.4 square inch

Pressure = 395,000 x 0.85

  101.4

Pressure = 3310 psi

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