Please enable JavaScript.
Coggle requires JavaScript to display documents.
PETROLEUM SYSTEM: RESERVOIR, SEAL AND TRAP - Coggle Diagram
PETROLEUM SYSTEM: RESERVOIR, SEAL AND TRAP
CHARACTERISTICS OF RESERVOIR
HC accumulation
good sealing tools
form reservoir
permeability
of rocks
porosity
of rocks
create flow path
CHARACTERISTICS OF SEAL & TRAP
TRAP
- STRUCTURAL TRAPS
deformation in rock layer
HC
ex: anticlines, fault
occur when formation moved
prevent migration occur
- STRATIGRAPHIC TRAPS
lithological changes (deposition)
and erosion
smaller in size
occur when reservoir is sealed by other beds
change of porosity, permeability
contact of fluid
horizontal, flat
if tilted, by
hydrodynamic flow
slope
SEAL
CAP ROCK
prevent from leaking
ex: shale layer
-stretch as long as horizontal legth
effective traps
salt
anhydrite
evaporites
COVER ROCK
Thickness
Lateral Continuity
Ductility
Burial Depth
Lithology
TIMING