Changes

Structural domains within the Wyoming thrust belt were defined by the regional mapping of the U.S. Geological Survey<ref name=ch20r232>Rubey, W., W., 1973, Geologic map of the Afton quadrangle and part of the big Piney quadrangle, Lincoln and Sublette counties, Wyoming: U., S. Geological Survey map I–686.</ref> and by interpreting satellite images such as the one shown in the figure below. Individual major thrust sheets were defined across the belt as well as their change in character along strike, thus defining domains on a large scale. Note that the small white rectangle in the center of the satellite image is the approximate area seen in the oblique aerial photograph in Figure 20-12.

Structural domains within the Wyoming thrust belt were defined by the regional mapping of the U.S. Geological Survey<ref name=ch20r232>Rubey, W., W., 1973, Geologic map of the Afton quadrangle and part of the big Piney quadrangle, Lincoln and Sublette counties, Wyoming: U., S. Geological Survey map I–686.</ref> and by interpreting satellite images such as the one shown in the figure below. Individual major thrust sheets were defined across the belt as well as their change in character along strike, thus defining domains on a large scale. Note that the small white rectangle in the center of the satellite image is the approximate area seen in the oblique aerial photograph in Figure 20-12.

[[file:exploring-for-structural-traps_fig20-6.png|thumb|{{figure number|20-6}}See text for explanation.]]

[[file:exploring-for-structural-traps_fig20-6.jpg|thumb|{{figure number|20-6}}See text for explanation.]]

==Prospective structural fairways==

==Prospective structural fairways==

These models were constructed of originally planar layers of limestone, sandstone, and granite. They were deformed in a pressure vessel at an effective overburden pressure of 15 × 10³ psi (1 × 10⁵ kPa). The top view is a photomicrograph of a model that simulates a thrust ramp. The bottom view simulates the hanging-wall geometry produced by movement along a series of bedding-parallel and ramp segments of a thrust fault.

These models were constructed of originally planar layers of limestone, sandstone, and granite. They were deformed in a pressure vessel at an effective overburden pressure of 15 × 10³ psi (1 × 10⁵ kPa). The top view is a photomicrograph of a model that simulates a thrust ramp. The bottom view simulates the hanging-wall geometry produced by movement along a series of bedding-parallel and ramp segments of a thrust fault.

[[file:exploring-for-structural-traps_fig20-16.png|thumb|{{figure number|20-16}}Published with permission of James Morse, Computational Geology.]]

[[file:exploring-for-structural-traps_fig20-16.jpg|thumb|{{figure number|20-16}}Published with permission of James Morse, Computational Geology.]]

Data on deformation mechanisms, such as fractures and how they affect reservoir properties, are obtained by integrating outcrop fracture data and laboratory estimates of fracture aperture. This integration allows for a direct calculation of fracture [[porosity]] and fracture [[permeability]] for the reservoir.

Data on deformation mechanisms, such as fractures and how they affect reservoir properties, are obtained by integrating outcrop fracture data and laboratory estimates of fracture aperture. This integration allows for a direct calculation of fracture [[porosity]] and fracture [[permeability]] for the reservoir.

==See also==

==See also==

* [[Workflow to find a prospect]]

* [[Workflow to find a prospect]]

* [[Tectonic setting]]

* [[Tectonic setting]]

* [[Structural domains]]

* [[Structural domains]]

* [[Prospective structural fairways]]

* [[Prospective structural fairways]]

* [[Lead/Prospect delineation]]

* [[Lead and prospect delineation]]

* [[Location selection]]

* [[Location selection]]