Changes

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| Trap

| Trap

| *  Trap integrity (certainty of dip closure; integrity of the closure throughout the evolution of the structure)  *  Area/volume under closure (present closure; structural closure during migration)

| *  Trap integrity (certainty of dip closure; integrity of the closure throughout the evolution of the structure)  <br />*  Area/volume under closure (present closure; structural closure during migration)

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| Reservoir

| Reservoir

| *  Storage capacity (structural degradation or enhancement effects)  *  Deliverability (structurally induced enhancement or degradation of [[permeability]])  *  Anisotropy (flow anisotropy due to faults, folds, or fracture facies variability)  *  Heterogeneity (local enhancement or degradation; fault isolation or compartmentalization)  *  Pressures (structurally induced overpressures)

| *  Storage capacity (structural degradation or enhancement effects)  <br />*  Deliverability (structurally induced enhancement or degradation of [[permeability]])  <br />*  Anisotropy (flow anisotropy due to faults, folds, or fracture facies variability)  <br />*  Heterogeneity (local enhancement or degradation; fault isolation or compartmentalization)  <br />*  Pressures (structurally induced overpressures)

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| Expulsion/ migration

| Expulsion/ migration

| *  Structural pathways (charge areas have been in effective communication with prospects)  *  Structural gathering areas (sufficient volumes of migrating hydrocarbons captured and diverted into appropriate pathways)  *  Timing (structural pathways effective throughout generation/migration event)

| *  Structural pathways (charge areas have been in effective communication with prospects)  <br />*  Structural gathering areas (sufficient volumes of migrating hydrocarbons captured and diverted into appropriate pathways)  <br />*  Timing (structural pathways effective throughout generation/migration event)

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