1. Local Data - Subsurface
Subsurface Measurements/Observations
Data from Wells
cores, cuttings, logs
lithology, ages, geochem, etc
Geophysical Data
Seismic (2D, 3D, 4D)
Gravity & Magnetics
SLIDE 6
A major source of data is subsurface measurements and the resulting interpretations
Subsurface Measurements/Observations
Data from Wells
Rock samples from cores and cuttings
Measurements from subsurface rock units via logs
Interpretations of lithology, ages, geochem, etc.
Geophysical data, usually collected at the Earth’s surface
Seismic data (2D, 3D, 4D)
Gravity & Magnetics
Logging a Well
Vibrators – Seismic Sources
Courtesy of ExxonMobil
L 3 - Types of Data