Changes

|-

|-

! Process

! Process

! Prediction Techniques

! colspan=2|  Prediction techniques

|-

|-

| Gasification

| Gasification

| *  Geohistory analysis *  Mapping maturation indicators (no oil, where reservoir R_o > 1.3%)

| colspan=2 | 

 

*  Geohistory analysis  

*  Mapping maturation indicators (no oil, where reservoir R_o > 1.3%)

|-

|-

| Gas destruction

| Gas destruction

| *  Geohistory analysis *  Mapping maturation indicators (gas unlikely where reservoir Ro> 2.8%)

| colspan=2 | 

 

*  Geohistory analysis  

*  Mapping maturation indicators (gas unlikely where reservoir Ro> 2.8%)

|-

|-

| Gas dilution

| rowspan=2; | Gas dilution

| Identified by

| ''Identified by''

| Indicates potential for

| ''Indicates potential for''

|-

|-

| *  Intrusives in fetch area *  Evaporite cements or beds at depths where temperature > [[temperature::150°C]] *  Gas sourced from coal, high thermal maturity *  Low methane charge

|  

 

*  Intrusives in fetch area  

| *  Carbon dioxide *  Hydrogen sulfide *  Nitrogen *  Carbon dioxide, nitrogen

*  Evaporite cements or beds at depths where temperature > [[temperature::150°C]]  

 

*  Gas sourced from coal, high thermal maturity  

*  Low methane charge

*  Carbon dioxide  

*  Hydrogen sulfide  

*  Nitrogen  

*  Carbon dioxide, nitrogen

|}

|}