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Petroleum System - Coggle Diagram
Petroleum System
Definition
a natural system encompasses a pod of active source rock
related oil and gas
includes all the geologic element and process
essental if a hydrocarbon acumulation is to exist
encompasses the entire hydrocarbon formation
The elements
Trap
concave-downwards goemetric arrangement
must in three dimensions
Seal
an impermeable ductile stratum
common shale or evaporites
Reservoir
porous and permeable material
typically a layer of sandstone or limestone
Migration
a porous and permeable conduit from source to reservoir
commonly a layer of sand or sandstone
Source
a deposit rich in organic matter
typically consist of the remains of phytoplankton
The processes
generation
formation of hydrocarbon
ofshore
onshore
in source rock
contain dead pland and animal milion years
at high temperature
migration
movement of hydrocarbon
porous
permeable rocks
high temperature
migrate from source rock to reservoir rock
accumulation
gathering hydrocarbon in reservoir rock
found in traps in reservoir rocks
must cap rock
prevent hydrocarbon from escaping
reservoir rock
must have feature
porosity
permeability