Changes

==Tying seismic to well data==

==Tying seismic to well data==

The figure below is a seismic reflection profile across the East Breaks 160-161 field, showing the 160 No. 1 well SP log and [[synthetic seismogram]] and two schematic diagrams for interpreting possible seismic reflection amplitude anomaly maps, which could indicate hydrocarbon-charged sands. Bioevent horizons correlate with the top seal above each reservoir interval. Only the lower ''Trim A'' and ''Glob alt'' reservoir sandstones are well developed in this well. The depositional model for a delta-front sheet sand extending over the entire postdepositional anticline is likely to have four-way downdip termination of petroleum-associated seismic reflection amplitude anomalies (view C). The depositional model for a depositional dip-oriented gravity-flow sandstone draped over the postdepositional anticline is likely to have two-way structural termination of a petroleum-associated seismic reflection amplitude anomaly, with stratigraphic termination of reflectors along both depositional-strike directions (view D). The mapped amplitude pattern in both the ''Trim A'' and ''Glob alt'' intervals agrees with a channel-fed gravity-flow depositional system.

[[:File:Sedimentary-basin-analysis fig4-57.png|Figure 4]] is a seismic reflection profile across the East Breaks 160-161 field, showing the 160 No. 1 well SP log and [[synthetic seismogram]] and two schematic diagrams for interpreting possible seismic reflection amplitude anomaly maps, which could indicate hydrocarbon-charged sands. Bioevent horizons correlate with the top seal above each reservoir interval. Only the lower ''Trim A'' and ''Glob alt'' reservoir sandstones are well developed in this well. The depositional model for a delta-front sheet sand extending over the entire postdepositional anticline is likely to have four-way downdip termination of petroleum-associated seismic reflection amplitude anomalies ([[:File:Sedimentary-basin-analysis fig4-57.png|Figure 4C]]). The depositional model for a depositional dip-oriented gravity-flow sandstone draped over the postdepositional anticline is likely to have two-way structural termination of a petroleum-associated seismic reflection amplitude anomaly, with stratigraphic termination of reflectors along both depositional-strike directions ([[:File:Sedimentary-basin-analysis fig4-57.png|Figure 4D]]). The mapped amplitude pattern in both the ''Trim A'' and ''Glob alt'' intervals agrees with a channel-fed gravity-flow depositional system.

==Recharging of reservoirs==

==Recharging of reservoirs==