Measuring and testing – Borehole or drilling – Downhole test
Patent
1982-09-13
1986-06-17
Caldwell, Sr., John W.
Measuring and testing
Borehole or drilling
Downhole test
364482, E21B 4700, G01R 2700
Patent
active
045948879
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 formation porosity, such as density and neutron well logs 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. 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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Evaluation of Shaly Clastic Reservoir Rocks, a publication of SPE, by Walter Fertl and Elton Frost, Jr.-Dresser Atlas, published Apr. 17, 1980, presented Sep. 23-26, 1979 at SPE 54th Conference.
Fertl Walter H.
Rukhovets Naum
Byron Richard M.
Caldwell Sr. John W.
Dresser Industries Inc.
Kovalick V. P.
McCollum Patrick H.
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