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WorksheetsPore Pressure Fun Game
Total questions: 10
Worksheet time: 4mins
What is pore pressure?
The fluid pressure in the pores in the formation
The pressure exerted by the combined weight of the pore fluid and sediment matrix
The pressure required to generate fractures where minimum compressive stress and tensile strength of the rock is exceeded
What are the units of absolute pressure?
S.G, g/cc
ppg, bar
ppg, psi
psi, MPa
What log used to derive lithostatic pressure gradient?
Sonic log
Resistivity log
Density log
Gamma ray log
What porosity-log based used to estimate pore pressure?
Gamma ray, density & sonic
Sonic & gamma ray
Resistivity & gamma ray
Sonic & resistivity
Pore pressure transforms using petrophysical logs (i.e. compressional slowness, resistivity) are designed to work only in shales, and not for reservoirs.
True
False
What test can be performed to determine the fracture pressure value?
RFT
LOT
ECD
MDT
When estimating pore pressure in shales sonic slowness or resistivity respond to what rock property?
Fluid pressure
Effective stress
Total stress
Porosity
What type of seismic velocity data used for pore pressure estimation and prediction?
Stacking velocity
Average velocity
Interval velocity
NMO Velocity
Effective stress is...
Total stress – pore pressure
Total stress + pore pressure
Total stress – total strain
Overpressure is...
Overburden stress minus pore pressure
Effective stress plus pore pressure
Hydrostatic pressure minus effective stress
Pore pressure greater than normal hydrostatic
