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The geological and reservoir properties of sedimentary rocks depend upon an interplay of tectonics, [[Sea level cycle phase|sea level]], [[Carbonate vs. siliciclastic deposition|sediment supply]], physical and biological processes of sediment transport and deposition, and [[Sea level cycles and climate|climate]]. At the basin scale, these processes interact to produce the geometric arrangement of different depositional environments or [[Definitions of depositional system elements#Systems tracts|systems tracts]] through time, known as the [[Systems tracts|stratigraphic architecture]] of the basin.<ref name=pt06r88>Miall, A. D., 1984, Principles of Sedimentary Basin Analysis: New York, Springer-Verlag, 490 p.</ref> At smaller scales, these processes control the external geometry and internal “anatomy” of clastic sediment bodies (see [[Geological heterogeneities]]). It is at this smaller scale that lithofacies analysis and interpretation of depositional environments become important for [[Predicting reservoir system quality and performance|reservoir evaluation]].

The geological and [[Petroleum reservoir fluid properties|reservoir properties]] of sedimentary rocks depend upon an interplay of [[tectonics]], [[Sea level cycle phase|sea level]], [[Carbonate vs. siliciclastic deposition|sediment supply]], physical and biological processes of [[sediment transport]] and deposition, and [[Sea level cycles and climate|climate]]. At the basin scale, these processes interact to produce the geometric arrangement of different [[depositional environments]] or [[Definitions of depositional system elements#Systems tracts|systems tracts]] through time, known as the [[Systems tracts|stratigraphic architecture]] of the basin.<ref name=pt06r88>Miall, A. D., 1984, Principles of Sedimentary Basin Analysis: New York, Springer-Verlag, 490 p.</ref> At smaller scales, these processes control the [[external geometry]] and internal “anatomy” of clastic sediment bodies (see [[Geological heterogeneities]]). It is at this smaller scale that lithofacies analysis and interpretation of depositional environments become important for [[Predicting reservoir system quality and performance|reservoir evaluation]].

==Data requirements==

==Data requirements==

Basic data requirements for facies analysis of subsurface rocks are listed in Table 1. Data associated with wells are most often used, but seismic data, particularly three-dimensional data, are becoming increasingly important in defining sandstone body geometries<ref name=pt06r17>Brown, A. R., 1986 Interpretation of three-dimensional seismic data: [http://store.aapg.org/detail.aspx?id=1025 AAPG Memoir 42], 194 p.</ref> (see [[Three-dimensional seismic methods for reservoir development]]). Conventional core is perhaps the most diagnostic for sedimentological interpretation of vertical sequences (see [[Core description]]). However, wireline tools such as [[dipmeters]] and formation imaging devices can provide electrical images suitable for sedimentological interpretation with the added ability to determine paleocurrent directions in appropriate cases (see [[Dipmeters]] and [[Borehole imaging devices]]).

Basic data requirements for facies analysis of subsurface rocks are listed in Table 1. Data associated with wells are most often used, but seismic data, particularly three-dimensional data, are becoming increasingly important in defining sandstone body geometries<ref name=pt06r17>Brown, A. R., 1986 Interpretation of three-dimensional seismic data: [http://store.aapg.org/detail.aspx?id=1025 AAPG Memoir 42], 194 p.</ref> (see [[Three-dimensional seismic methods for reservoir development]]). Conventional core is perhaps the most diagnostic for sedimentological interpretation of vertical sequences (see [[Core description]]). However, wireline tools such as [[dipmeters]] and [[Borehole imaging devices|formation imaging devices]] can provide electrical images suitable for sedimentological interpretation with the added ability to determine [[paleocurrent]] directions in appropriate cases .

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