Measuring and testing – Borehole or drilling – Formation logging
Patent
1997-12-31
1999-02-09
Williams, Hezron
Measuring and testing
Borehole or drilling
Formation logging
73 38, 1662525, E21B 4900, E21B 4700, G01N 1508
Patent
active
058697551
ABSTRACT:
An acoustical method of determining the spherical, or vuggy, porosity in carbonate rock formations, as a function of shear modulus. Total porosity and shear modulus of the formation is measured. Then the intrinsic granular porosity, dry bulk modulus, and spherical porosity are calculated. The carbonate rock is modeled, consisting of a primary host medium composed of carbonate grains with intergranular porosity between them. The model is easily modified to account for the case of intercrystalline microporosity existing within the grains, in addition to the intergranular porosity between them.
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Johnson David L.
Murphy, III William F.
Ramamoorthy Raghu
Levy Mark
Politzer Jay L.
Schlumberger Technology Corporation
Smith Keith G. W.
Williams Hezron
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