PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Specific gravity formula -
correct answer ✅SG = 141.5 / (131.5 + API gravity)
API gravity formula -
correct answer ✅API gravity = (141.5 / SG @ 60 degrees F) - 131.5
Water specific gravity value -
correct answer ✅Water SG = 1
Oil specific gravity value -
correct answer ✅Oil SG < 1
Light crude oil -
correct answer ✅API gravity above 31.1 API
Medium crude oil -
correct answer ✅API gravity between 31.1 API and 22.3 API
Heavy crude oil -
correct answer ✅API gravity lower than 22.3 API
,PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Composition of natural gas -
correct answer ✅Methane (90%), Ethane (4%), other chemicals
(6%)
Size of a barrel -
correct answer ✅1 bbl = 5.614 cubic feet = 42 gallons
Gas volume units -
correct answer ✅mcf = thousands of cubic feet
mmcf = millions of cubic feet
Conventional reservoir -
correct answer ✅has interconnected pore spaces, allows flow to
the wellbore
Unconventional reservoir -
correct answer ✅low permeability, normally requires stimulation
to form permeability, hydraulic fracturing is the preferred
stimulation method
3 types of unconventional reservoirs -
correct answer ✅Tight gas, coal bed natural gas, and shale gas
,PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Tight gas unconventional reservoir -
correct answer ✅low-porosity sandstones and carbonates, many
are drilled horizontally or hydraulically fractured to help production
CBNG unconventional reservoir -
correct answer ✅wells produced from coal seams, frequently
produce water along with natural gas
Shale Gas unconventional reservoir -
correct answer ✅wells produced from low-permeability shale
formations, good source of natural gas, most are hydraulically
fractured to help production
1st oil well -
correct answer ✅completed by Colonel Edwin Drake in Titusville,
Pennsylvania, used fuel for illumination of lamps, etc., well was 69
feet deep
Spindletop -
correct answer ✅1st successful use of rotary drilling
, PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Variables that move oil prices -
correct answer ✅Consumption, production, inventories, spare
production capacity, geopolitical risks, market variables
Market variables that affect oil prices -
correct answer ✅future market trading activity, commodity
investment, exchange rates, & equity markets
High porosity & low permeability -
correct answer ✅low production rate for a long time
High permeability & low porosity -
correct answer ✅high production rate for a short time
Absolute permeability (K) -
correct answer ✅when only one phase is present in a rock sample
(oil)
Effective Permeability (Ko) -
correct answer ✅when two phases are present in a rock sample
(oil & water), lowest value = 0 (when oil no longer flows)
LSU Questions and Answers 2026
Specific gravity formula -
correct answer ✅SG = 141.5 / (131.5 + API gravity)
API gravity formula -
correct answer ✅API gravity = (141.5 / SG @ 60 degrees F) - 131.5
Water specific gravity value -
correct answer ✅Water SG = 1
Oil specific gravity value -
correct answer ✅Oil SG < 1
Light crude oil -
correct answer ✅API gravity above 31.1 API
Medium crude oil -
correct answer ✅API gravity between 31.1 API and 22.3 API
Heavy crude oil -
correct answer ✅API gravity lower than 22.3 API
,PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Composition of natural gas -
correct answer ✅Methane (90%), Ethane (4%), other chemicals
(6%)
Size of a barrel -
correct answer ✅1 bbl = 5.614 cubic feet = 42 gallons
Gas volume units -
correct answer ✅mcf = thousands of cubic feet
mmcf = millions of cubic feet
Conventional reservoir -
correct answer ✅has interconnected pore spaces, allows flow to
the wellbore
Unconventional reservoir -
correct answer ✅low permeability, normally requires stimulation
to form permeability, hydraulic fracturing is the preferred
stimulation method
3 types of unconventional reservoirs -
correct answer ✅Tight gas, coal bed natural gas, and shale gas
,PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Tight gas unconventional reservoir -
correct answer ✅low-porosity sandstones and carbonates, many
are drilled horizontally or hydraulically fractured to help production
CBNG unconventional reservoir -
correct answer ✅wells produced from coal seams, frequently
produce water along with natural gas
Shale Gas unconventional reservoir -
correct answer ✅wells produced from low-permeability shale
formations, good source of natural gas, most are hydraulically
fractured to help production
1st oil well -
correct answer ✅completed by Colonel Edwin Drake in Titusville,
Pennsylvania, used fuel for illumination of lamps, etc., well was 69
feet deep
Spindletop -
correct answer ✅1st successful use of rotary drilling
, PETE 1010 Final Exam for Dr. Thurber,
LSU Questions and Answers 2026
Variables that move oil prices -
correct answer ✅Consumption, production, inventories, spare
production capacity, geopolitical risks, market variables
Market variables that affect oil prices -
correct answer ✅future market trading activity, commodity
investment, exchange rates, & equity markets
High porosity & low permeability -
correct answer ✅low production rate for a long time
High permeability & low porosity -
correct answer ✅high production rate for a short time
Absolute permeability (K) -
correct answer ✅when only one phase is present in a rock sample
(oil)
Effective Permeability (Ko) -
correct answer ✅when two phases are present in a rock sample
(oil & water), lowest value = 0 (when oil no longer flows)
