| There is no universally applicable set of rules by which to define flow units. Dividing a reservoir into flow units requires an integration of stratigraphic, sedimentological, structural, petrographic, petrophysical, and field performance data. The process is summarized as follows ([[:file:flow-units-for-reservoir-characterization_fig1.png|Figure 1]]): | | There is no universally applicable set of rules by which to define flow units. Dividing a reservoir into flow units requires an integration of stratigraphic, sedimentological, structural, petrographic, petrophysical, and field performance data. The process is summarized as follows ([[:file:flow-units-for-reservoir-characterization_fig1.png|Figure 1]]): |
| * Identify the major lithofacies, vertical sequences, and depositional environments from available core. Relate lithofacies, at the whole-core scale, to their mineralogical, textural, and pore level properties and to permeability, [[porosity]], fluid saturations, and capillarity as measured on core plugs. Establish consistent relationships between rock properties and petrophysical properties. | | * Identify the major lithofacies, vertical sequences, and depositional environments from available core. Relate lithofacies, at the whole-core scale, to their mineralogical, textural, and pore level properties and to permeability, [[porosity]], fluid saturations, and capillarity as measured on core plugs. Establish consistent relationships between rock properties and petrophysical properties. |
− | Examples of field studies that apply the flow unit concept are listed in Table 1. A larger number of studies have identified and mapped lithofacies control on geometry and petrophysical properties of reservoirs but have not applied a flow unit classification to these subdivisions. Some examples are listed in Table 2 and illustrated in Figure 2. These studies are good examples of the stratigraphic and sedimentological component of the process of flow unit subdivision. | + | Examples of field studies that apply the flow unit concept are listed in Table 1. A larger number of studies have identified and mapped lithofacies control on geometry and petrophysical properties of reservoirs but have not applied a flow unit classification to these subdivisions. Some examples are listed in Table 2 and illustrated in [[:file:flow-units-for-reservoir-characterization_fig2.png|Figure 2]]. These studies are good examples of the stratigraphic and sedimentological component of the process of flow unit subdivision. |
| | <ref name=pt06r43>Guevara, E. H., 1988, Geological characterization of Permian submarine fan reservoirs of the Driver Waterflood Unit, Spraberry Trend, Midland Basin, Texas: The Univ. of Texas Bureau of Economic Geology Report of Investigations, n. 172, 44 pp.</ref><ref name=pt06r143>Tyler, N., Gholston, J. C., 1988, Heterogeneous deep-sea fan reservoirs, Shakelford and Preston waterflood units, Spraberry Trend, West Texas: The Univ. of Texas Bureau of Economic Geology Report of Investigations, n. 171, 38 p.</ref> | | | <ref name=pt06r43>Guevara, E. H., 1988, Geological characterization of Permian submarine fan reservoirs of the Driver Waterflood Unit, Spraberry Trend, Midland Basin, Texas: The Univ. of Texas Bureau of Economic Geology Report of Investigations, n. 172, 44 pp.</ref><ref name=pt06r143>Tyler, N., Gholston, J. C., 1988, Heterogeneous deep-sea fan reservoirs, Shakelford and Preston waterflood units, Spraberry Trend, West Texas: The Univ. of Texas Bureau of Economic Geology Report of Investigations, n. 171, 38 p.</ref> |