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