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Line 94:
Line 94: − {| class = "wikitable"+ − |-+ − ! Step+ − ! Action+ − |-+ − | 1+ − | Estimate grain size and sorting using standard size-sorting comparators, thin section and SEM photomicrographs, and rock photographs. − |- − | 2 − | Estimate volume percentages using Terry-Chillingar charts made for volume estimates. − |- − | 3 − | Estimate consolidation using the scheme described in the preceding table. − |- − | 4 − | Describe the visible and pinpoint [[porosity]] and interconnectedness. − |- − | 5 − | Estimate permeability from rocks on comparators and/or using rock characteristics described in the preceding table. (Comparators can be made or purchased.) − |- − | 6 − | Predict permeability for the formation in prospective areas where petrophysical characteristics are believed to be similar − |}
Sandstone permeability estimation from cuttings (view source)
Revision as of 19:40, 22 October 2014
, 19:40, 22 October 2014→Procedure: predicting sandstone permeability
The procedure below is for predicting the permeability of sandstones from cuttings using 20× magnification<ref name=ch09r57 />.
The procedure below is for predicting the permeability of sandstones from cuttings using 20× magnification<ref name=ch09r57 />.
# Estimate grain size and sorting using standard size-sorting comparators, thin section and SEM photomicrographs, and rock photographs.
# Estimate volume percentages using Terry-Chillingar charts made for volume estimates.
# Estimate consolidation using the scheme described in the preceding table.
# Describe the visible and pinpoint [[porosity]] and interconnectedness.
# Estimate permeability from rocks on comparators and/or using rock characteristics described in the preceding table. (Comparators can be made or purchased.)
# Predict permeability for the formation in prospective areas where petrophysical characteristics are believed to be similar
==See also==
==See also==