Measuring and testing – Borehole or drilling – Downhole test
Patent
1985-06-27
1986-11-18
Levy, Stewart J.
Measuring and testing
Borehole or drilling
Downhole test
E21B 4900
Patent
active
046228497
ABSTRACT:
The volume of clay within clay-bearing formations is determined throughout the formations. This volume of clay is then functionally related to measurements indicative of the formations. Utilizing measured formation characteristics representative of different clay types, such as potassium content or bound water content, the formation porosity measurements are extrapolated to indicate the porosity log measurements which would be yielded if the logging devices were responsive only to the clay within the formations. In addition the cation exchange capacity and the percent of expandable clay layers for the shale zones are determined. These extrapolated measurements are then related to known or determinable formation characteristics to determine additional formation properties such as porosity, permeability, and fluid saturation characteristics.
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Dresser Industries Inc.
Levy Stewart J.
McCollum Patrick H.
Raevis Robert R.
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