Changes

==Niobrara maximum bed curvature==

==Niobrara maximum bed curvature==

Higher resistivity on electrical logs shows the brittle, more fracturable benches within the Niobrara. Constructing a detailed cross section, showing fracturable benches, maximum bed curvature, and any surface and subsurface normal faulting, allows the explorer to visualize and accurately plot the angle at which the well bore must be drilled to penetrate the critical elements.

Higher resistivity on electrical logs shows the brittle, more fracturable benches within the Niobrara. Constructing a detailed cross section, showing fracturable benches, maximum bed curvature, and any surface and subsurface normal faulting, allows the explorer to visualize and accurately plot the angle at which the well bore must be drilled to penetrate the critical elements.

Formations usually do not have them. Occasionally, upward-lying normal faults will produce. [[Seismic data]] are useful in delineating these faults because good marker beds are usually present below the Niobrara. The fault can then be projected upward and is sometimes associated with a dim spot due to attenuation of [[seismic data]] in fracture zones.

Formations usually do not have them. Occasionally, upward-lying normal faults will produce. [[Seismic data]] are useful in delineating these faults because good marker beds are usually present below the Niobrara. The fault can then be projected upward and is sometimes associated with a dim spot due to attenuation of [[seismic data]] in fracture zones.

[[:file:developing-a-philosophy-of-exploration_fig1-3.png|figure 2]] is a Niobrara structure cross section.

 

[[file:developing-a-philosophy-of-exploration_fig1-3.png|thumb|{{figure number|1-3}}See text for explanation.]]

==Niobrara open fractures==

==Niobrara open fractures==