Changes

==Purpose and procedure==

==Purpose and procedure==

The purpose of a facies map is to reconstruct [[paleogeography]], from which we can predict [[reservoir]], [[seal]], and [[source rock]] distribution. Facies maps are made at an [http://en.wiktionary.org/wiki/isochronous isochronous] surface or within a coeval interval.<ref name=ch04r94>Tearpock, D., J., Bischke, R., E., 1991, Applied Subsurface Geologic Mapping: Prentice-Hall, 648 p.</ref><ref name=ch04r107>Visher, G., S., 1984, Exploration Stratigraphy: Tulsa, PennWell Books, 334 p.</ref> We map [[reservoir system]] thickness (1) to compare the distribution of reservoir-system thickness and field location and (2) to identify or predict locations with thick reservoirs and trapping conditions that are undrilled. A procedure for mapping facies is outlined in the table below.

The purpose of a facies map is to reconstruct [[paleogeography]], from which we can predict [[reservoir]], [[seal]], and [[source rock]] distribution. Facies maps are made at an [http://en.wiktionary.org/wiki/isochronous isochronous] surface or within a coeval interval.<ref name=ch04r94>Tearpock, D., J., Bischke, R., E., 1991, Applied Subsurface Geologic Mapping: Prentice-Hall, 648 p.</ref><ref name=ch04r107>Visher, G., S., 1984, Exploration Stratigraphy: Tulsa, PennWell Books, 334 p.</ref> We map [[reservoir system]] thickness (1) to compare the distribution of reservoir-system thickness and field location and (2) to identify or predict locations with thick reservoirs and trapping conditions that are undrilled. A procedure for mapping facies is outlined below:

# Identify and correlate significant [[Isochron|isochronous]] surfaces throughout the [[depocenter]], integrating well data, [[Wikipedia:Bioevent|bioevents]], and [[Seismic interpretation|seismic reflection profile grids]].

# Map areas of potential [[reservoir]] and [[seal]] [[Lithofacies|facies]] that occur between two isochronous surfaces.

# Map [http://wiki.seg.org/wiki/Dictionary:Seismic_facies seismic facies] associated with that interval.

# Plot important physiographic features, such as the [http://education.nationalgeographic.com/education/encyclopedia/continental-shelf/?ar_a=1 shelf]-[http://www.thefreedictionary.com/continental+slope slope] break or structurally controlled bathymetric highs.

# Integrate all data into a depositional facies map.

| Identify and correlate significant [[Isochron|isochronous]] surfaces throughout the [[depocenter]], integrating well data, [[Wikipedia:Bioevent|bioevents]], and [[Seismic interpretation|seismic reflection profile grids]].

| Map areas of potential [[reservoir]] and [[seal]] [[Lithofacies|facies]] that occur between two isochronous surfaces.

| Map [http://wiki.seg.org/wiki/Dictionary:Seismic_facies seismic facies] associated with that interval.

| Plot important physiographic features, such as the [http://education.nationalgeographic.com/education/encyclopedia/continental-shelf/?ar_a=1 shelf]-[http://www.thefreedictionary.com/continental+slope slope] break or structurally controlled bathymetric highs.

| Integrate all data into a depositional facies map.

==Seismic facies profile==

==Seismic facies profile==