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PETROLEUM SYSTEM - Coggle Diagram
PETROLEUM SYSTEM
SEDIMENTARY BASIN
very thick sediment rock
how ? = seismic gravity sureys
subsidence history
40% produce HC
dark- no chance to find oil/gas
green,yellow,red- more potential
reducing in thickness of sedimentary
shale,sand,silt,conglo
definition
combination of geo components and process
elements/ geo attribute
source rock
reservoir rock
seal
trap
processes
trap formation
arrangement of reservoir and seal rock to allow hydrocarbon accumulate
trace element
reservoir
seal
fluids
boundaries between solid
contact between R & S
boundaries between fluid
contact between oil-gas-water
generation-expulsion-migration-accumulation
expulsion- from source rock
migration- porous & permeable SR go through to migrate root
petro generation = cooking process/ maturation
FOM = oil/gas
HC will go through into the empty space and always moving up
accumulate- at reservoir HC will accumulated and form a layer
trap & seal- HC form anticline and secure with cap rock
ROCK TYPE
produce HC
porous coarse grained
prevent HC passing through
SOURCE ROCK
SR that have enough HC to generate and form commercial acc of oil& gass
properties
TOC
weight % org. carbon
greater than 1% TOC
exceeds 15% TOC- world class SR
HI
total H+ relative to the H within water
quality
Hunt
Philippi
Baker