Answers 2024/2025
put fine sand in a jar of water and shake it up - which particles will settle first (small, large, no
difference)? - ANSWERSlarge particles
petroleum engineers are mostly concerned with _____ rocks (rock type) - ANSWERSsedimentary
sorting occurs during _____ - ANSWERSsedimentation
Organics --> kerogen --> bitumen --> liquid petroleum (and/or graphite and methane) -
ANSWERScreation of hydrocarbon
what fluids are in reservoirs today - ANSWERSwater, oil, gas
"water" is _____, either from seawater or fresh followed by chemical dissolution/precipitation -
ANSWERSbrine
during the formation of _____ _____, silts and clays sediment in low energy waters along with plant
matter. Under anaerobic conditions, bacteria break the oxygen bonds not the C-C bonds. -
ANSWERSsource rock
migration out of source rock - ANSWERSprimary migration
migration into a trap - ANSWERSsecondary migration
what is it called when buoyance separates gas, oil, and brine - ANSWERSseparation
what is the approximate density of brine? - ANSWERS1.3 g/cm3
, what is the approximate density of oil? - ANSWERS0.8 g/cm3
what is the approximate density of water - ANSWERS1 g/cm3
pressure in reservoirs _____ with depth - ANSWERSincrease
what quantifies the increase in pressure with depth (think simple) - ANSWERSpressure gradient
a combination of fluid static pressure and lithostatic pressure - ANSWERSoverburden pressure (Po)
pressure build up if fluid cannot escape - ANSWERSabnormal pressure
A material that undergoes continuous deformation when exposed to a shear stress - ANSWERSfluid
liquids are sometimes called "_____" (hint: compresibility) - ANSWERSincompressible
All _____ media are porous - ANSWERSpermeable
All permeable media are _____ - ANSWERSporous
not all _____ media are permeable - ANSWERSporous
not all porous media are _____ - ANSWERSpermeable
porosity is reported as a _____ or _____ - ANSWERSfraction, percent
porosity is associated with _____ _____ - ANSWERSstorage capacity