LAYER INSPECTION METHOD FOR MEASURING CHARACTERISTICS OF GEOLOGIC FORMATION IN TEST DRILLED HOLE AND WINCH APPARATUS USED FOR MEASURING CHARACTERISTICS OF GEOLOGIC FORMATION

摘要

To facilitate use of logging cables with fiber optic signal conductors, the optic source and detector at the surface are mounted on the winch drum. Electrical signals communicate between the control/processing unit and the optic source and detector on the winch drum.