Changes

[[file:exploring-for-structural-traps_fig20-17.png|thumb|{{figure number|13}}See text for explanation.]]

[[file:exploring-for-structural-traps_fig20-17.png|thumb|{{figure number|13}}See text for explanation.]]

The outcrop sketch in [[file:exploring-for-structural-traps_fig20-18.png|Figure 14]] is of folds in the Devonian Darby siltstone and Ordovician Bighorn dolomite from the same location as [[:file:exploring-for-structural-traps_fig20-17.png|Figure 13]]. The numbers on the sketch represent fracture intensity values expressed as the average number of fractures encountered per foot of scanline measurement at various locations on the folds. All else being equal, higher fracture intensities should be associated with zones of higher fracture porosities and permeabilities. Maps of high fracture intensities can be used to locate optimum well locations and well trajectories in prospects.

The outcrop sketch in [[:file:exploring-for-structural-traps_fig20-18.png|Figure 14]] is of folds in the Devonian Darby siltstone and Ordovician Bighorn dolomite from the same location as [[:file:exploring-for-structural-traps_fig20-17.png|Figure 13]]. The numbers on the sketch represent fracture intensity values expressed as the average number of fractures encountered per foot of scanline measurement at various locations on the folds. All else being equal, higher fracture intensities should be associated with zones of higher fracture porosities and permeabilities. Maps of high fracture intensities can be used to locate optimum well locations and well trajectories in prospects.

[[file:exploring-for-structural-traps_fig20-18.png|thumb|{{figure number|14}}. Copyright: Nelson and Serra, 1995; courtesy Journal of Canadian Petroleum Technology.]]

[[file:exploring-for-structural-traps_fig20-18.png|thumb|{{figure number|14}}. Copyright: Nelson and Serra, 1995; courtesy Journal of Canadian Petroleum Technology.]]