Page 239 - Introduction to Petroleum Engineering

226 UPSTREAM FACILITIES
11.6 A. A platform can drill up to 32 wells with a production capacity of
12 000 bbl liquid/day/well. What is the maximum liquid flow rate
possible if all wells are producing at full capacity?
B. The pipeline from the platform to a gathering center onshore can carry
400 000 bbl liquid/day. Can the platform produce at full liquid flow
capacity?
11.7 Suppose water is flowing through a circular pipe with volumetric flow rate
3
q 1000 barrels/day. The water density is 1g/cc 1000kg/m and the
.
dynamic viscosity of water is 1cp 0 001 Pa⋅s. The pipe length is 8000 ft
and has a 5 in. inner diameter. Calculate Reynolds number.
11.8 Calculate friction factor for fluid flowing through a pipe. Assume the relative
roughness of the pipe wall is 0.000144 and Reynolds number = 18 400.

11.9 A. A cylindrical steel pipe with 48 in. inner diameter is 0.25 in. thick. The
pipe carries water under an internal pressure p 50psi. The circumfer-
/2
ential stress in the steel is S pdt where p is internal pressure, d is
inner diameter of pipe, and t is pipe thickness. Calculate circumferential
stress in the steel S.
B. If the pressure is raised to 100 psi in the 48‐in. inner‐diameter steel pipe,
what thickness of steel would be required for an allowable circumferen-
/2
tial stress S 10000psi? Hint: Solve S pdt for t.
C. Do you need to replace the steel pipe?
11.10 A. Suppose 100 000 gallons of oil are spilled at sea. How many barrels of
oil were spilled?
B. If the oil has a specific gravity of 0.9, determine the mass of oil spilled.
Express your answer in kg and lbm. Hint: Find density of oil ρ from
o
3
oil specific gravity γ and water density ρ (1g/cc 1000kg/m ), where
w
o
. Mass of oil spilled = volume spilled × density.
o w o
C. Estimate the area covered by the spill if the thickness of the spill is
1 mm. Express your answer in m , km , mi , and acres. Use area covered
2
2
2
by spill = volume spilled/thickness of spill.