Figure F21. A. Bulk density from multisensor track gamma ray attenuation (GRA)-based measurements. The variability and occurrence of very low values (<1.2 g/cm3) reflect severe degassing artifacts and recovery disturbance. B. Downhole comparison of GRA, moisture and density (MAD), and wireline bulk density measurements.

Figure F21. A. Bulk density from multisensor track gamma ray attenuation (GRA)-based measurements. The variability and occurrence of very low values (<1.2 g/cm³) reflect severe degassing artifacts and recovery disturbance. B. Downhole comparison of GRA, moisture and density (MAD), and wireline bulk density measurements.