Clay microporosity data are derived from image analysis of petrographic sections. These data allow estimation of clay-bound water and establish a quantitative relationship between clay texture and effective volume. Small quantities of highlymicroporous clay may cause drastic degradation of permeability with little effect on total porosity.

Keywords:
conductivity, microporosity data, spe 28850, texture, permeability, clay-bound water, clay mineral, saturation, mineral, characteristic
Subjects:
Drilling Operations, Reservoir Fluid Dynamics, Formation Evaluation & Management, Coring, fishing, Flow in porous media, Open hole/cased hole log analysis, Core analysis
Copyright 1994, Society of Petroleum Engineers
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