Petrobowl Exam Ques ons and answers With complete
solu on RATED A+ NEW EDITION 100% PASS
What chemical found in TNT is also found in oil, par cularly Borneo crude? - Ans Toloul
What is the term for the vented or drained off fluids from a pressured well? - Ans Bleed Off
Name Five types of Packers used in the oil industry? - Ans Compression set packer, drillable
packer, hookwall packer, inflatable packer, hydraulic packer
This volume of gas has been separated from produced water. - Ans Blue gas
What is a raised metal lip that is around a perfora on? - Ans Burr
what is the area of the rock adjacent to the perfora on tunnel where permeability may be 50%
less than ini al, undamaged permeability? - Ans Crush Zone
This term describes the difference between average reservoir pressure and the flowing
bo-omhole pressure. - Ans Drawdown
This type of drawdown is the pressure differen al from the forma on near the wellbore to the
wellbore. - Ans Comple on Drawdown
This is a rubber or plas c material used as a seal. - Ans Elastomer
In the USA, this type of well is defined as producing 10 BOE/d or less. - Ans Stripper well
, Describe what a z factor is also give the equa on for it. - Ans The "z" factor is the ra o of the
volume actually occupied by a gas at a given pressure and temperature to the volume the gas
would occupy at the same pressure and temperature if it behaved like an ideal gas. Z= VACTUAL
/VIDEAL
What is the equa on for gas specific gravity? - Ans Yg = Y/Yair
What do the variables represent in the gas specific gravity equa on? - Ans Yg is the specific
gravity of the gas, ?g is the density of the gas, and ?air is the density of dry air.
What would the pressure be in a black oil reservoir at discovery? - Ans Either above the
bubble point or equal to the bubble point pressure
What are the two types of chemical bonds? - Ans Covalent and ionic bonds
What is a vessel used to treat or separate water-oil emulsions? - Ans Treater
In offshore opera ons, what does FPSO stand for? - Ans Floa ng Produc on, Storage, and
Offloading Vessel
What is vessel used to separate gas oil and water a>er the mixture is produced from the well? -
Ans Separator
What is the unused world oil produc on capacity called? - Ans Spare Capacity
What type of well typically produces a few barrels of oil per day and accounted for 15 percent
of total U.S. produc on in 1986? - Ans Stripper wells
,What is the average world's water cut associated with oil produc on? - Ans 25%
Who is considered the world leader in deep-offshore produc on? - Ans Brazil's Petrobras.
Wildca-er's used to taste and classify oils as sweet, medium sour, and sour based on what
property of oil? - Ans Sulfur Content.
What term is used to define a higher than expected produc on from exis ng oilfields possible
due to improved management, adop on of more sophis cated and costly technologies or
previous miscalcula on? - Ans Produc on Creeping
What are the two possible ways single phase flow can be characterized? - Ans Laminar or
Turbulent
The velocity profile is parabolic for what type of flow? - Ans Laminar
Assuming uniform pipe diamters, what will be the pressure drop due to kine c enery for an
incompressible fluid. - Ans Zero
When calcula ng rela ve pipe roughness, Є=k/d, what is k? - Ans Length of the protrusions on
the pipe wall.
In two phase flow what is hold up? - Ans When the lighter phase flows faster than the denser
phase.
What is bubble flow? - Ans Dispersed bubbles of gas in a con nous liquid phase.
, What is slug flow? - Ans At higher gas rates, the bubbles coalesce into larger bubbles, called
Taylor bubbles, that eventually fill the en re pipe cross sec on. Between the large gas bubbles
are slugs of liquid that contain smaller bubbles of gas entrained in the liquid.
What is churn flow? - Ans With a further increase in gas rate, the larger gas bubbles become
unstable and collapse, resul ng in churn flow, a highly turbulent flow pa-ern with both phases
dipsersed. Churn flow is characterized by oscillatory, up and down mo ons of the liquid.
What is annular flow? - Ans At higher gas rates, gas becomes the con nous phase, with liquid
flowing in an annulus coa ng the surface of the pipe and with liquid droplets entrained in the
gas phase.
Which two phase pressure gradient correla on can be used for any pipe inclina on and flow
direc on? - Ans Beggs and Brill
Why for two phase flow would an increase in the imposed well head pressur result in a
propor onaltely larger increase in the corresponding bo-om hole pressure? - Ans Because gas
would be re-dissolved, increasing the density of the fluid in the wellbore.
What is the concept of a gas li>? - Ans Increase gas liquid ra o resul ng in a reduc on to
bo-omhole pressure
There exists a lim ng gas liquid ra o, where the decrease in hydrosta c pressure will be offset
by what? - Ans Increase in fric onal pressure drop
The instersec on of the IPR curve and VLP curve gives what result? - Ans Well deliverability
The integra on fo flow rate versus me results in what? - Ans Cummula ve Produc on
solu on RATED A+ NEW EDITION 100% PASS
What chemical found in TNT is also found in oil, par cularly Borneo crude? - Ans Toloul
What is the term for the vented or drained off fluids from a pressured well? - Ans Bleed Off
Name Five types of Packers used in the oil industry? - Ans Compression set packer, drillable
packer, hookwall packer, inflatable packer, hydraulic packer
This volume of gas has been separated from produced water. - Ans Blue gas
What is a raised metal lip that is around a perfora on? - Ans Burr
what is the area of the rock adjacent to the perfora on tunnel where permeability may be 50%
less than ini al, undamaged permeability? - Ans Crush Zone
This term describes the difference between average reservoir pressure and the flowing
bo-omhole pressure. - Ans Drawdown
This type of drawdown is the pressure differen al from the forma on near the wellbore to the
wellbore. - Ans Comple on Drawdown
This is a rubber or plas c material used as a seal. - Ans Elastomer
In the USA, this type of well is defined as producing 10 BOE/d or less. - Ans Stripper well
, Describe what a z factor is also give the equa on for it. - Ans The "z" factor is the ra o of the
volume actually occupied by a gas at a given pressure and temperature to the volume the gas
would occupy at the same pressure and temperature if it behaved like an ideal gas. Z= VACTUAL
/VIDEAL
What is the equa on for gas specific gravity? - Ans Yg = Y/Yair
What do the variables represent in the gas specific gravity equa on? - Ans Yg is the specific
gravity of the gas, ?g is the density of the gas, and ?air is the density of dry air.
What would the pressure be in a black oil reservoir at discovery? - Ans Either above the
bubble point or equal to the bubble point pressure
What are the two types of chemical bonds? - Ans Covalent and ionic bonds
What is a vessel used to treat or separate water-oil emulsions? - Ans Treater
In offshore opera ons, what does FPSO stand for? - Ans Floa ng Produc on, Storage, and
Offloading Vessel
What is vessel used to separate gas oil and water a>er the mixture is produced from the well? -
Ans Separator
What is the unused world oil produc on capacity called? - Ans Spare Capacity
What type of well typically produces a few barrels of oil per day and accounted for 15 percent
of total U.S. produc on in 1986? - Ans Stripper wells
,What is the average world's water cut associated with oil produc on? - Ans 25%
Who is considered the world leader in deep-offshore produc on? - Ans Brazil's Petrobras.
Wildca-er's used to taste and classify oils as sweet, medium sour, and sour based on what
property of oil? - Ans Sulfur Content.
What term is used to define a higher than expected produc on from exis ng oilfields possible
due to improved management, adop on of more sophis cated and costly technologies or
previous miscalcula on? - Ans Produc on Creeping
What are the two possible ways single phase flow can be characterized? - Ans Laminar or
Turbulent
The velocity profile is parabolic for what type of flow? - Ans Laminar
Assuming uniform pipe diamters, what will be the pressure drop due to kine c enery for an
incompressible fluid. - Ans Zero
When calcula ng rela ve pipe roughness, Є=k/d, what is k? - Ans Length of the protrusions on
the pipe wall.
In two phase flow what is hold up? - Ans When the lighter phase flows faster than the denser
phase.
What is bubble flow? - Ans Dispersed bubbles of gas in a con nous liquid phase.
, What is slug flow? - Ans At higher gas rates, the bubbles coalesce into larger bubbles, called
Taylor bubbles, that eventually fill the en re pipe cross sec on. Between the large gas bubbles
are slugs of liquid that contain smaller bubbles of gas entrained in the liquid.
What is churn flow? - Ans With a further increase in gas rate, the larger gas bubbles become
unstable and collapse, resul ng in churn flow, a highly turbulent flow pa-ern with both phases
dipsersed. Churn flow is characterized by oscillatory, up and down mo ons of the liquid.
What is annular flow? - Ans At higher gas rates, gas becomes the con nous phase, with liquid
flowing in an annulus coa ng the surface of the pipe and with liquid droplets entrained in the
gas phase.
Which two phase pressure gradient correla on can be used for any pipe inclina on and flow
direc on? - Ans Beggs and Brill
Why for two phase flow would an increase in the imposed well head pressur result in a
propor onaltely larger increase in the corresponding bo-om hole pressure? - Ans Because gas
would be re-dissolved, increasing the density of the fluid in the wellbore.
What is the concept of a gas li>? - Ans Increase gas liquid ra o resul ng in a reduc on to
bo-omhole pressure
There exists a lim ng gas liquid ra o, where the decrease in hydrosta c pressure will be offset
by what? - Ans Increase in fric onal pressure drop
The instersec on of the IPR curve and VLP curve gives what result? - Ans Well deliverability
The integra on fo flow rate versus me results in what? - Ans Cummula ve Produc on
