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of reservoir formation properties. Figure 6-1 by Weber (1986) describes
the various types of information that can be acquired by different logging
techniques. However, Weber (1986) cautions that: "Combination of
modern logs can give much information in non-cored wells, but only after
proper calibration via core studies."
Characterization and quantification of the properties of the rocks, pore,
and fluid systems require an integration of disciplines (Gunter et al.,
1997). Skopec (1992) defines that "Reservoir characterization is a process
for quantitatively predicting reservoir properties to reduce geological

BEDDING FEATURES RtLOG

GRAINS
MICRO LOGS
SIZE, SORTING, PACKING
DIPMETER LOG
MINERALOGY, DENSITY,
CHEMICAL COMPOSITION

CEMENT SONIC LOG

CONFIGURATION
QUANTITY
MINERALOGY, DENSITY,
CHEMICAL COMPOSITION
NEUTRON LOG

CLAY
TYPE, DISTRIBUTION
DENSITY LOG
MINERALOGY,
CHEMICAL COMPOSITION

ACCESSORY GAMMA RAY LOG
MINERALS

Figure 6-1. Logging techniques available for determination of formation
characteristics (after Weber, 1986; reprinted by permission of the author and
Academic Press).