PETE 314 HW06
1) Oil of specific gravity 0.85 and viscosity 2 cp is flowing in a 3 in. diameter tubing
with 140 bbl/d flowrate. Determine the Reynolds number and the flow regime using
Field units and appropriate conversions during the calculation! (I hope

HW07
Q.1
Power Law fluid flow data: n= 0.41, K = 0.66 Pasn, L=100 m, D= 0.15 m,
V= 0.30 m/s, SG=1
a) Calculate the RePower law number to check that laminar flow regime is right.
power law=
power law=
8 Dn V 2n
avg
[
2 ( 3 n+1 )
K
n
n
]
8 0.150.4110000.320

HW02-KEY
1.
An oil-storage tank (D = 150 ft) has a vent to the atmosphere to allow air to move in or
out as the tank is filled or emptied. Assume this vent is plugged by snow in a blizzard while the
oil is being pumped out of the tank, and the pressure in

3.36-5
From an energy balance around the earth estimate the rate of energy liberated by nuclear
reactions in the earth. Assume that heat losses from the earth are at steady state. Use the
following: Earth is roughly a sphere 8000 mi in diameter. Geotherma

PETE 314 HW02 Solution
1. An oil-storage tank (D = 150 ft) has a vent to the atmosphere to allow air to move in or out as the tank is filled or emptied. Assume this
vent is plugged by snow in a blizzard while the oil is being pumped out of the tank, and t

PETE 314 HW01
1.
Calculate the SG of drilling mud that is 60 wt. % water, 40 wt. % BaSO4 (barite). Use
SGbarite = 4.49.
2.
Calculate the density (in kg/m3) of a SG=0.66 gas at 25 oC and 25 kPa vacuum! (Use ideal gas law.
Assume the local atmospheric press

Problem 1
A room receives 1100 Btu/hr of heat from a side wall that is 15-ft wide by 10-ft high . The wall is
6 inch thick and its inside temperature is 75oF while the outside temperature is at 100 oF.
a. Calculate the thermal conductivity (k, in Btu/(hr

Miniquiz 3 Solution
Suppose classroom 106 is a cuboid with width=50ft,length=75 ft,height=15ft.
Then the volume of air in an empty classroom Vair = 50 75 15 ft^3
The mass of it: mair = Vair * air=56250 ft3*0.075 lbm ft3 =4213.89 lbm
The mass of the air >

You wish to determine the specific gravity of certain oil.
You drop a cork into the oil and you see that 20 % of the cork is above the fluid level.
Then you drop the same cork to water and find that 28% of it is above the fluid level.
What is the specific

MQ05
The peak water consumption of a household is 15 gal/min.
What pipe diameter would be necessary to keep the flow in the inlet pipe laminar ?
Would you recommend such a pipe?
must be not more than 2000.
Therefore, we would need a 23.7 in. pipe (or larg

Date
Section
UIN
Family, First
Closed book and closed notes. Only "cheat sheet" is allowed. In case it is indispensable, make further assumptions and
indicate it. Answer with some WORDS, in addition to any calculated number. Do not forget the UNITS.
MQ06

What is the Specific Gravity of the oil?
8 cm
6 cm
the same level in the left and right column
10 cm
Solution:
We see that the oil is lighter than water, because a 8 cm column of it exactly balances a 6 cm column of water.
The pressures are the same at th

A gas well produces 0.5 mmscfd gas . A d = 80 ft, h= 30 ft cylindrical gas tank can store how many
days of production, if the temperature is 100 oF and the max allowed pressure is 220 psia? (Use gas
gravity 0.632 if you need it!) (Note: mmscfd stands for

A 600-lb iron tubing is lifted in SG=1.8 drilling mud. What is the minimum force (in lbf) needed? (The SG of
iron is on the Sheets.)
Solution:
Vo = 600 lbm / (7.8w)
Wt =600 lbf
(
)
F = 462 lbf is the minimum force needed to lift the tubing.
A one standard

Problem 1
An offshore well is drilled in water depth 1500 m (SGseawater: 1.05). The oil reservoir is at depth 7500 m from
the sea-level (6000 m from sea floor), its pressure is 7.21107 Pa gauge. Due to an unexpected accident the
wellhead at the seafloor i

The pressure in the air cushion of the tank is P = 9 psig.
The elevation difference is h = 17 ft.
?
valve
a)
If the valve is (carefully) opened at time zero, will the fluid
be flowing in to or out from the lower tank?
?
SG=1.15 Case:
b)
Draw schematic cur

Problem 1
An offshore well is drilled in water depth 1500 m (SGseawater: 1.05). The oil reservoir is at depth 7500 m from
the sea-level (6000 m from sea floor), its pressure is 7.21107 Pa gauge. Due to an unexpected accident the
wellhead at the seafloor i

Liquified Petroleum Gas (LPG) is mixture of propane and butane under large pressure to keep it in liquid
state. Calculate how many mscf gas evolves from one barrel liquid. Use SGliquid = 0.580 and SGgas = 1.82 .
Solution:
The volume of the liquid is
The m

PETE 314 - MQ 9
Section
Date
UIN
Family, First
Closed book and closed notes. Only "PETE 314sheet" is allowed. In case it is indispensable, make further assumptions
and indicate it. Answer with some WORDS, in addition to any calculated number. Do not forge

Problem 1
Gas (SG=0.65 and k=1.2) enters an ideal adiabatic compressor with Qsc = 1 mmscfd at standard conditions.
The outlet pressure is 29.3 psig. Calculate the theoretical dW/dm (work per unit mass) and theoretical Po
(power, in hp or kW, depending on

UIN
Date
PETE 314
Miniquiz 1
Family, First
SI
"US customary"
value
unit
value
unit
My height
1.93
m
6.2
ft
My "equivalent
diameter"
0.25
m
0.8
ft
My surface area
1.6
m2
17.
ft2
SI
"US customary"
value
My maximum blood
pressure, gauge
My maximum blood
pres

MQ06 Key
When modeling a fluid device, the model is exactly 1/10 times the final device to be built. For similitude, the
dimensionless number V2/ (gL) called Freud number should be kept the same in the model, as it will be in the
device.
Here V is fluid v

In a vertical upward two-phase flow situation the superficial gas velocity is 8.56 ft/s, the holdup-ratio is 3.5 and
the slip velocity is 27.5 ft/s. What is the superficial velocity of the liquid? (Use 6 in. diameter if you need it.)
Solution:
(1 )
HR =

Mini Quiz 06
From Slide 6.3, what is dW/dm and the power requirement?
(
p
)
dW
6220 Pa
J
6.22
3
dm
kg
1000 kg/m
Mass flow rate:
.
m Q 0.0053
m3
kg
kg
1000
5.3
3
s
s
m
Power requirement:
. dW
Power m
dm
6.22
J
kg
J
5.3
32.97 (or Watts)
kg
s
s

MQ03a Key
A gas well produces 0.5 mmscfd gas . A d = 80 ft, h= 30 ft cylindrical gas tank can store how many minutes of
production, if the max allowed pressure is 220 psia? (Assume the tank temperature is standard. Use gas gravity
0.632 if you need it!) (

Mq 8 solution
The angular velocity is
=
1
2
= 83.78
( rad/s is also acceptable. However, please notice that there is no sec in the SI system. It is s.)
The tangential velocity is
= = 10.64
( 418.9 in/sec or 34.9 ft/sec are also acceptable.)

Answer: Both the density and the velocity changes from the bottom to the top, but their product
remains the same
because the mass flow rate and the cross sectional area to flow remains the same. Therefore, the only thing changing in the
Reynolds number is