PETE 1010 – Exam Study Guide (Petroleum Engineering Comprehensive Review, Key Concepts
& Practice Questions with Answers)
The pressure gradient of a column of fresh water is approximately 0.433 psi/ft - ANS ✔✔True
If our drilling fluid pressure was substantially greater than the formation pressure, the deep
induction curve would have little value to a well logging engineer, as he/she would not be able
to measure Rt - ANS ✔✔True
What lithology tool can be used by the engineer to view a reservoir sand, for the purpose of
perforations> - ANS ✔✔GR
The lithology tool that measures the natural potential that is created, as a result of co-mingling
of drilling fluids with the reservoir fluids is a _________ tool - ANS ✔✔SP
Drillers use _________ tools, as a qualitative measure, to evaluate hole condition and the
success or lack of success of the drilling fluid program - ANS ✔✔caliper
In addition to porosity determination, the _______________ Log is used in gas detection, shaly
sand interpretation, and complex lithology evaluation. - ANS ✔✔neutron
You are drilling a well, using a water-base mud ,into a Louisiana gulf coast formation, at 18,000
feet (TVD). If the formation was over-pressured by 1,500 psi, what mud-weight would you need
to equal formation pressure? - ANS ✔✔7.33 ppg, 10.54 ppg
There are 43,560 sq. ft., in an acre. Your friend wants you to invest in a newly discovered oil field
where the reservoir extends approximately 65 acres of land. The top of the reservoir is located
at 12,000 ft. (TVD) and the bottom of the productive zone is located at 12, 025 ft. (TVD). From
the sonic log delta-t reads 90 usec/ft., and from the electric log the deep induction curve reads
0.27 ohms in a 100% wet sandstone that has no shale or other rocks/minerals in it, and the
deep induction curve reads 3.0 ohms in the zone of interest (target zone). The formation
,recovery factor is 65% and Bo is equal to 1.4. The amount of OOIP and STB is equal to
_____________/____________. - ANS ✔✔2,294,776 bbls / 1,065,431 bbls
What mud weight listed below is not obtainable using a water-base mud? - ANS ✔✔8.00 ppg
If you were drilling a well into a normally pressured south Louisiana formation, and your drill bit
is at the bottom of a 196 stand string of drill-pipe and drill-collars, what mud-weight would you
need to equal formation pressure? - ANS ✔✔8.94 ppg
_____________ logging consists of irradiating the wall of a borehole with Gamma Rays and
studying the effect of their interaction with the rocks. - ANS ✔✔density
A ________ is a tower-like load-bearing structure, usually of bolted construction. - ANS
✔✔derrick
_____________ are large, high-pressure reciprocating pumps used to circulate the drilling fluid
on a drilling rig.
Feedback - ANS ✔✔mud pumps
___________ a drilling rig system in which the source of power is one or more internal
combustion engine and in which the power is distributed to rig components through
mechanical devices (such as chains, sprockets, clutches, and shafts).
Feedback - ANS ✔✔mechanical drive
_____________ is a drilling rig system on which the energy from the power source, usually
several diesel engines, is changed to electricity by generators mounted on the engines. The
electrical power is then distributed through electrical conductors to electric motors. The motors
power various rig components.
Feedback - ANS ✔✔electrical drive
, _____________ is the column, or string, of drill pipe with attached tool joints that transmits
fluid and rotational power from the kelly to the drill collars and the bit. Often especially in the
oil patch, the term is loosely applied to include both drill pipe and drill collars.
Feedback - ANS ✔✔drill string
The _________ is the hoisting mechanism on a drilling rig.
Feedback - ANS ✔✔drawworks
____________ is a wire rope used to support the drilling tools. (also called a rotary line) - ANS
✔✔drilling line
The __________ hangs from the drilling hook on the bottom of the traveling block by means of
a large bail, or handle. The outside of it does not rotate, but the inside does. It supports the drill
string and is a conduit for drilling fluid, allowing everything below it to rotate. - ANS ✔✔swivel
___________ is a heavy steel, pipe-like, four- or six-sided member suspended from the swivel
through the rotary table and connected to the top-most joint of drill pipe which turns the drill
stem as the rotary table turns. It has a bored passageway that permits fluid to be circulated into
the drill stem and up the annulus, or vice versa. - ANS ✔✔kelly
__________ is the rotating steel platform on the derrick floor with an opening in the center
through which the drill-pipe and casing must pass. It is rotated by power transmitted from the
drilling engines/motors.
Feedback - ANS ✔✔rotary table
__________ is heavy, thick-walled, seamless steel pipe used in rotary drilling to turn the drill bit
and to provide a conduit for the drilling mud. Joints of drill pipe are about 30 feet long - ANS
✔✔drill-pipe
& Practice Questions with Answers)
The pressure gradient of a column of fresh water is approximately 0.433 psi/ft - ANS ✔✔True
If our drilling fluid pressure was substantially greater than the formation pressure, the deep
induction curve would have little value to a well logging engineer, as he/she would not be able
to measure Rt - ANS ✔✔True
What lithology tool can be used by the engineer to view a reservoir sand, for the purpose of
perforations> - ANS ✔✔GR
The lithology tool that measures the natural potential that is created, as a result of co-mingling
of drilling fluids with the reservoir fluids is a _________ tool - ANS ✔✔SP
Drillers use _________ tools, as a qualitative measure, to evaluate hole condition and the
success or lack of success of the drilling fluid program - ANS ✔✔caliper
In addition to porosity determination, the _______________ Log is used in gas detection, shaly
sand interpretation, and complex lithology evaluation. - ANS ✔✔neutron
You are drilling a well, using a water-base mud ,into a Louisiana gulf coast formation, at 18,000
feet (TVD). If the formation was over-pressured by 1,500 psi, what mud-weight would you need
to equal formation pressure? - ANS ✔✔7.33 ppg, 10.54 ppg
There are 43,560 sq. ft., in an acre. Your friend wants you to invest in a newly discovered oil field
where the reservoir extends approximately 65 acres of land. The top of the reservoir is located
at 12,000 ft. (TVD) and the bottom of the productive zone is located at 12, 025 ft. (TVD). From
the sonic log delta-t reads 90 usec/ft., and from the electric log the deep induction curve reads
0.27 ohms in a 100% wet sandstone that has no shale or other rocks/minerals in it, and the
deep induction curve reads 3.0 ohms in the zone of interest (target zone). The formation
,recovery factor is 65% and Bo is equal to 1.4. The amount of OOIP and STB is equal to
_____________/____________. - ANS ✔✔2,294,776 bbls / 1,065,431 bbls
What mud weight listed below is not obtainable using a water-base mud? - ANS ✔✔8.00 ppg
If you were drilling a well into a normally pressured south Louisiana formation, and your drill bit
is at the bottom of a 196 stand string of drill-pipe and drill-collars, what mud-weight would you
need to equal formation pressure? - ANS ✔✔8.94 ppg
_____________ logging consists of irradiating the wall of a borehole with Gamma Rays and
studying the effect of their interaction with the rocks. - ANS ✔✔density
A ________ is a tower-like load-bearing structure, usually of bolted construction. - ANS
✔✔derrick
_____________ are large, high-pressure reciprocating pumps used to circulate the drilling fluid
on a drilling rig.
Feedback - ANS ✔✔mud pumps
___________ a drilling rig system in which the source of power is one or more internal
combustion engine and in which the power is distributed to rig components through
mechanical devices (such as chains, sprockets, clutches, and shafts).
Feedback - ANS ✔✔mechanical drive
_____________ is a drilling rig system on which the energy from the power source, usually
several diesel engines, is changed to electricity by generators mounted on the engines. The
electrical power is then distributed through electrical conductors to electric motors. The motors
power various rig components.
Feedback - ANS ✔✔electrical drive
, _____________ is the column, or string, of drill pipe with attached tool joints that transmits
fluid and rotational power from the kelly to the drill collars and the bit. Often especially in the
oil patch, the term is loosely applied to include both drill pipe and drill collars.
Feedback - ANS ✔✔drill string
The _________ is the hoisting mechanism on a drilling rig.
Feedback - ANS ✔✔drawworks
____________ is a wire rope used to support the drilling tools. (also called a rotary line) - ANS
✔✔drilling line
The __________ hangs from the drilling hook on the bottom of the traveling block by means of
a large bail, or handle. The outside of it does not rotate, but the inside does. It supports the drill
string and is a conduit for drilling fluid, allowing everything below it to rotate. - ANS ✔✔swivel
___________ is a heavy steel, pipe-like, four- or six-sided member suspended from the swivel
through the rotary table and connected to the top-most joint of drill pipe which turns the drill
stem as the rotary table turns. It has a bored passageway that permits fluid to be circulated into
the drill stem and up the annulus, or vice versa. - ANS ✔✔kelly
__________ is the rotating steel platform on the derrick floor with an opening in the center
through which the drill-pipe and casing must pass. It is rotated by power transmitted from the
drilling engines/motors.
Feedback - ANS ✔✔rotary table
__________ is heavy, thick-walled, seamless steel pipe used in rotary drilling to turn the drill bit
and to provide a conduit for the drilling mud. Joints of drill pipe are about 30 feet long - ANS
✔✔drill-pipe
