The Present Status and Future Direction in the Imagery Representation of Geophysical Logging Data

摘要

Geophysical logging has become an imagingscheme for the interpretation of structure, tangentialinhomogeneities and radial variation of petrophysical propertiesof formations around the borehole. Macroscale geology, tied toseismic reflection profiles, and time-lapse measurements weredeveloped beyond the initial objectives of the geophysicallogging which deals with smaller scale properties of rocks.Summarizing the present usage of logging data, there are fourmain applications: azimuthal profiling, radial profiling, scale-gap filling, and time-lapse measurements. We think that thepresent tendency in geophysical logging comes from a necessityto characterize reservoirs for long-term development of oil fields.Recent technologies like single well imaging or permanentmonitoring were invented either for filling resolution gapbetween seismic and logging data or long-term monitoring ofreservoir parameters. The following direction reservoir scalegeology, to seismic reprocessing, or to reservoir management.Also, the development of permanent monitoring systems is wellexpected from a reservoir geophysics and earth science point ofview. Inverse modeling of formation parameters using well longresponse to complex geology must be considered as well toenhance the resolution and accuracy of well log data.