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[[:file:show-evaluation_fig1.png|Figure 1]], a show evaluation form, summarizes some of the criteria commonly used to evaluate a show. Note, however, that the presence or absence of a recordable show does not absolutely determine hydrocarbon producibility. For example, zones of good [[porosity]] and [[permeability]] that yield no show may still be viable hydrocarbon-bearing reservoirs. Conversely, poor porosity-permeability zones that have gas increases may be nonproducible. For the most effective formation evaluation, wellsite shows of all types should be integrated with the results of postdrilling logging and testing.
 
[[:file:show-evaluation_fig1.png|Figure 1]], a show evaluation form, summarizes some of the criteria commonly used to evaluate a show. Note, however, that the presence or absence of a recordable show does not absolutely determine hydrocarbon producibility. For example, zones of good [[porosity]] and [[permeability]] that yield no show may still be viable hydrocarbon-bearing reservoirs. Conversely, poor porosity-permeability zones that have gas increases may be nonproducible. For the most effective formation evaluation, wellsite shows of all types should be integrated with the results of postdrilling logging and testing.
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[[file:show-evaluation_fig1.png|thumb|300px|{{figure number|1}}Show evaluation form. (Copyright ©1992 by Paul A. Daniels, Jr., and Diana Morton-Thompson. Used with permission.)]]
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[[file:show-evaluation_fig1.png|thumb|500px|{{figure number|1}}Show evaluation form. (Copyright ©1992 by Paul A. Daniels, Jr., and Diana Morton-Thompson. Used with permission.)]]
    
==Gas detection==
 
==Gas detection==

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