Pete 1010 Exam Study questions with
complete solutions
The pressure gradient of a column of fresh water is approximately 0.433 psi/ft - correct answer ✔✔True
If our drilling fluid pressure was substantially greater than the formation pressure, the deep induction
curve would have little value to a well loggin engineer, as he/she would not be able to measure Rt -
correct answer ✔✔True
What lithology tool can be used by the engineer to view a reservoir sand, for the purpose of
perforations> - correct answer ✔✔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 - correct answer ✔✔SP
Drillers use _________ tools, as a qualitative measure, to evaluate hole condition and the success or lack
of success of the drilling fluid program - correct answer ✔✔caliper
In addition to porosity determination, the _______________ Log is used in gas detection, shaly sand
interpretation, and complex lithology evaluation. - correct answer ✔✔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? - correct answer ✔✔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 _____________/____________. - correct answer ✔✔2,294,776 bbls
/ 1,065,431 bbls
,What mud weight listed below is not obtainable using a water-base mud? - correct answer ✔✔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? - correct answer ✔✔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. - correct answer ✔✔density
A ________ is a tower-like load-bearing structure, usually of bolted construction. - correct answer
✔✔derrick
_____________ are large, high-pressure reciprocating pumps used to circulate the drilling fluid on a
drilling rig.
Feedback - correct answer ✔✔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 - correct answer ✔✔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 - correct answer ✔✔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 - correct answer ✔✔drill string
The _________ is the hoisting mechanism on a drilling rig.
, Feedback - correct answer ✔✔drawworks
____________ is a wire rope used to support the drilling tools. (also called a rotary line) - correct answer
✔✔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. - correct answer ✔✔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. - correct answer ✔✔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 - correct answer ✔✔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 - correct answer
✔✔drill-pipe
_________ are a thick-walled steel pipe used to stabilize the bottom-hole drilling assembly. which are
used to provide the weight required to drill the hole.
Feedback - correct answer ✔✔drill collars
_______ is a cutting device attached to the bottom end of the drill pip - correct answer ✔✔bit
As you are logging a south Louisiana well, if the gamma-ray reading was approximately 125 API units and
it suddenly dropped, as your tool moved up the well, to approximately 25 API units, you would most
likely access that the drop in the GR count is due to the presents of _____________. - correct answer
✔✔sand
complete solutions
The pressure gradient of a column of fresh water is approximately 0.433 psi/ft - correct answer ✔✔True
If our drilling fluid pressure was substantially greater than the formation pressure, the deep induction
curve would have little value to a well loggin engineer, as he/she would not be able to measure Rt -
correct answer ✔✔True
What lithology tool can be used by the engineer to view a reservoir sand, for the purpose of
perforations> - correct answer ✔✔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 - correct answer ✔✔SP
Drillers use _________ tools, as a qualitative measure, to evaluate hole condition and the success or lack
of success of the drilling fluid program - correct answer ✔✔caliper
In addition to porosity determination, the _______________ Log is used in gas detection, shaly sand
interpretation, and complex lithology evaluation. - correct answer ✔✔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? - correct answer ✔✔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 _____________/____________. - correct answer ✔✔2,294,776 bbls
/ 1,065,431 bbls
,What mud weight listed below is not obtainable using a water-base mud? - correct answer ✔✔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? - correct answer ✔✔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. - correct answer ✔✔density
A ________ is a tower-like load-bearing structure, usually of bolted construction. - correct answer
✔✔derrick
_____________ are large, high-pressure reciprocating pumps used to circulate the drilling fluid on a
drilling rig.
Feedback - correct answer ✔✔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 - correct answer ✔✔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 - correct answer ✔✔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 - correct answer ✔✔drill string
The _________ is the hoisting mechanism on a drilling rig.
, Feedback - correct answer ✔✔drawworks
____________ is a wire rope used to support the drilling tools. (also called a rotary line) - correct answer
✔✔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. - correct answer ✔✔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. - correct answer ✔✔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 - correct answer ✔✔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 - correct answer
✔✔drill-pipe
_________ are a thick-walled steel pipe used to stabilize the bottom-hole drilling assembly. which are
used to provide the weight required to drill the hole.
Feedback - correct answer ✔✔drill collars
_______ is a cutting device attached to the bottom end of the drill pip - correct answer ✔✔bit
As you are logging a south Louisiana well, if the gamma-ray reading was approximately 125 API units and
it suddenly dropped, as your tool moved up the well, to approximately 25 API units, you would most
likely access that the drop in the GR count is due to the presents of _____________. - correct answer
✔✔sand
