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Reservoir, Seal & Trap - Coggle Diagram
Reservoir, Seal & Trap
Trap
A rock structure of
impermeable formation
for
containing hydrocarbon
2 Types
of
Trap
Structural Traps
Deformation
of
Rock Layer
Due to
Folding / Faulting / Salt Dome
Examples
Fault Traps
Occurence of
Faulting
Preventing
any kinds of
Migration
Anticlines
Upward Folding
of
Layers
Petroleum is
contained
in the
highest point
of fold
Stratigraphic Traps
Lithological
Changes
(Deposition / Erosion)
Sealing
from
overlying beds
Seal (Rock Cap)
An
Impermeable
Barrier
Commonly
Shale
Effectiveness
Lithology
More
Impermeable
Material = Better
Seal
Ductility
More
Ductility
= Less Possibility of
Fracture
Thickness
Thicker
Seal =
Stronger
Lateral Continuity
Longer
Seal = Wider
Spill Point
Burial Depth
Deeper Depth = Higher
Pressure