PETROBOWL QUESTIONS AND ANSWERS | 2025/2026
ACTUAL UPDATE | WITH COMPLETE SOLUTION!!
What chemical found in TNT is also found in oil, particularly Borneo crude?
Answer - Toloul
What is the term for the vented or drained off fluids from a pressured well?
Answer - Bleed Off
Name Five types of Packers used in the oil industry? Answer - Compression set
packer, drillable packer, hookwall packer, inflatable packer, hydraulic packer
This volume of gas has been separated from produced water. Answer - Blue
gas
What is a raised metal lip that is around a perforation? Answer - Burr
what is the area of the rock adjacent to the perforation tunnel where
permeability may be 50% less than initial, undamaged permeability? Answer -
Crush Zone
This term describes the difference between average reservoir pressure and the
flowing bottomhole pressure. Answer - Drawdown
,This type of drawdown is the pressure differential from the formation near the
wellbore to the wellbore. Answer - Completion Drawdown
This is a rubber or plastic material used as a seal. Answer - Elastomer
In the USA, this type of well is defined as producing 10 BOE/d or less. Answer -
Stripper well
Describe what a z factor is also give the equation for it. Answer - The "z" factor
is the ratio 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 equation for gas specific gravity? Answer - Yg = Y/Yair
What do the variables represent in the gas specific gravity equation? Answer -
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? Answer -
Either above the bubble point or equal to the bubble point pressure
What are the two types of chemical bonds? Answer - Covalent and ionic bonds
What is a vessel used to treat or separate water-oil emulsions? Answer -
Treater
In offshore operations, what does FPSO stand for? Answer - Floating
Production, Storage, and Offloading Vessel
,What is vessel used to separate gas oil and water after the mixture is produced
from the well? Answer - Separator
What is the unused world oil production capacity called? Answer - Spare
Capacity
What type of well typically produces a few barrels of oil per day and accounted
for 15 percent of total U.S. production in 1986? Answer - Stripper wells
What is the average world's water cut associated with oil production? Answer -
25%
Who is considered the world leader in deep-offshore production? Answer -
Brazil's Petrobras.
Wildcatter's used to taste and classify oils as sweet, medium sour, and sour
based on what property of oil? Answer - Sulfur Content.
What term is used to define a higher than expected production from existing
oilfields possible due to improved management, adoption of more
sophisticated and costly technologies or previous miscalculation? Answer -
Production Creeping
What are the two possible ways single phase flow can be characterized?
Answer - Laminar or Turbulent
The velocity profile is parabolic for what type of flow? Answer - Laminar
, Assuming uniform pipe diamters, what will be the pressure drop due to kinetic
enery for an incompressible fluid. Answer - Zero
When calculating relative pipe roughness, Є=k/d, what is k? Answer - Length of
the protrusions on the pipe wall.
In two phase flow what is hold up? Answer - When the lighter phase flows
faster than the denser phase.
What is bubble flow? Answer - Dispersed bubbles of gas in a continous liquid
phase.
What is slug flow? Answer - At higher gas rates, the bubbles coalesce into
larger bubbles, called Taylor bubbles, that eventually fill the entire pipe cross
section. Between the large gas bubbles are slugs of liquid that contain smaller
bubbles of gas entrained in the liquid.
What is churn flow? Answer - With a further increase in gas rate, the larger gas
bubbles become unstable and collapse, resulting in churn flow, a highly
turbulent flow pattern with both phases dipsersed. Churn flow is characterized
by oscillatory, up and down motions of the liquid.
What is annular flow? Answer - At higher gas rates, gas becomes the continous
phase, with liquid flowing in an annulus coating the surface of the pipe and
with liquid droplets entrained in the gas phase.
Which two phase pressure gradient correlation can be used for any pipe
inclination and flow direction? Answer - Beggs and Brill
ACTUAL UPDATE | WITH COMPLETE SOLUTION!!
What chemical found in TNT is also found in oil, particularly Borneo crude?
Answer - Toloul
What is the term for the vented or drained off fluids from a pressured well?
Answer - Bleed Off
Name Five types of Packers used in the oil industry? Answer - Compression set
packer, drillable packer, hookwall packer, inflatable packer, hydraulic packer
This volume of gas has been separated from produced water. Answer - Blue
gas
What is a raised metal lip that is around a perforation? Answer - Burr
what is the area of the rock adjacent to the perforation tunnel where
permeability may be 50% less than initial, undamaged permeability? Answer -
Crush Zone
This term describes the difference between average reservoir pressure and the
flowing bottomhole pressure. Answer - Drawdown
,This type of drawdown is the pressure differential from the formation near the
wellbore to the wellbore. Answer - Completion Drawdown
This is a rubber or plastic material used as a seal. Answer - Elastomer
In the USA, this type of well is defined as producing 10 BOE/d or less. Answer -
Stripper well
Describe what a z factor is also give the equation for it. Answer - The "z" factor
is the ratio 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 equation for gas specific gravity? Answer - Yg = Y/Yair
What do the variables represent in the gas specific gravity equation? Answer -
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? Answer -
Either above the bubble point or equal to the bubble point pressure
What are the two types of chemical bonds? Answer - Covalent and ionic bonds
What is a vessel used to treat or separate water-oil emulsions? Answer -
Treater
In offshore operations, what does FPSO stand for? Answer - Floating
Production, Storage, and Offloading Vessel
,What is vessel used to separate gas oil and water after the mixture is produced
from the well? Answer - Separator
What is the unused world oil production capacity called? Answer - Spare
Capacity
What type of well typically produces a few barrels of oil per day and accounted
for 15 percent of total U.S. production in 1986? Answer - Stripper wells
What is the average world's water cut associated with oil production? Answer -
25%
Who is considered the world leader in deep-offshore production? Answer -
Brazil's Petrobras.
Wildcatter's used to taste and classify oils as sweet, medium sour, and sour
based on what property of oil? Answer - Sulfur Content.
What term is used to define a higher than expected production from existing
oilfields possible due to improved management, adoption of more
sophisticated and costly technologies or previous miscalculation? Answer -
Production Creeping
What are the two possible ways single phase flow can be characterized?
Answer - Laminar or Turbulent
The velocity profile is parabolic for what type of flow? Answer - Laminar
, Assuming uniform pipe diamters, what will be the pressure drop due to kinetic
enery for an incompressible fluid. Answer - Zero
When calculating relative pipe roughness, Є=k/d, what is k? Answer - Length of
the protrusions on the pipe wall.
In two phase flow what is hold up? Answer - When the lighter phase flows
faster than the denser phase.
What is bubble flow? Answer - Dispersed bubbles of gas in a continous liquid
phase.
What is slug flow? Answer - At higher gas rates, the bubbles coalesce into
larger bubbles, called Taylor bubbles, that eventually fill the entire pipe cross
section. Between the large gas bubbles are slugs of liquid that contain smaller
bubbles of gas entrained in the liquid.
What is churn flow? Answer - With a further increase in gas rate, the larger gas
bubbles become unstable and collapse, resulting in churn flow, a highly
turbulent flow pattern with both phases dipsersed. Churn flow is characterized
by oscillatory, up and down motions of the liquid.
What is annular flow? Answer - At higher gas rates, gas becomes the continous
phase, with liquid flowing in an annulus coating the surface of the pipe and
with liquid droplets entrained in the gas phase.
Which two phase pressure gradient correlation can be used for any pipe
inclination and flow direction? Answer - Beggs and Brill
