Figure F11. A. Compensated neutron tool schematic drawing. The source and detectors are held pressed against the borehole wall (redrawn from Rider, 1996). B. Schematic trajectories of a neutron in a limestone with no porosity and pure water. The slowing down length in a limestone is far greater than in water (modified from Ellis, 1987).

Figure F11. A. Compensated neutron tool schematic drawing. The source and detectors are held pressed against the borehole wall (redrawn from Rider, 1996). B. Schematic trajectories of a neutron in a limestone with no porosity and pure water. The slowing down length in a limestone is far greater than in water (modified from Ellis, 1987).