Description Applications Schematic illustration of the Azimuthal Density Neutron tool (LWD-ADN). Specifications ODP Logging Services, Lamont-Doherty Earth Observatory, Rt. 9W, Palisades, NY 10964 Logging-While-Drilling Azimuthal Density Neutron Tool ♦ In situ estimation of bulk porosity and permeability ♦ Estimation of fluid pressure ♦ Lithology estimation and rock chemistry characterization ♦ Provides information regarding the spatial varation of physical properties around the borehole The Azimuthal Density Neutron tool (LWD-ADN) is the latest generation density/neutron LWD tool offered by Anadrill. Similar to its predecessor, the Compensated Density Neutron tool (CDN), it is combinable with other LWD tools. Unlike the CDN, however, the ADN can be configured to provide real-time apparent neutron porosity, formation bulk density and photoelectric factor data to characterize formation porosity and lithology while drilling. These nuclear measurements are borehole compensated for improved accuracy, standoff, and photoelectric factor measurements while drilling. Assembly of the ADN tool aboard the JOIDES Resolution. : t h g i e w l o o T ) g k 7 0 9 ( m b l 0 0 0 2 : h t g n e l l o o T ) m 2 6 . 6 ( t f 7 . 1 2 : e g n a r e r u t a r e p m e T ) C ° 0 5 1 o t ° 5 2 - ( F ° 0 0 3 o t ° 3 1 - : D O r a l l o C s e c n a r e l o t I P A . n i 5 7 . 6 : D O r e z i l i b a t S . n i 5 7 8 . 9 - 5 2 . 8 : e u q r o t y r a t o r m u m i x a M f b l - t f 0 0 0 , 6 1 ) r e z i l i b a t s h t i w , e l o h . n i - 5 . 8 ( s n o i t a c i f i c e p s t n e m e r u s a e M y c a r u c c A l a c i t s i t a t S * y t i l i b a t a e p e r r h / t f 0 0 2 t a l a c i t r e V n o i t u l o s e r . g v a , y t i s n e D m c / g 5 1 0 . 0 - / + 3 m c / g 6 0 0 . 0 - / + 3 * * . n i 6 . g v a , y t i s o r o p n o r t u e N % 5 - / + . u . p 5 . 0 - / + . u . p 5 . 1 - / + * * . n i 2 1 . g v a , F E P % 5 - / + t i n u 5 2 . 0 - / + * * . n i 2 : t i b n o t h g i e w m u m i x a M L / 0 0 0 , 0 0 0 , 4 7 = F 2 e h t s i L e r e h w ( f b l ) t e e f n i s r e z i l i b a t s n e e w t e b e c n a t s i d : ) g n i d n e b o n ( l l u p r e v o . x a M f b l 0 0 0 , 0 3 3 : e r u s s e r p g n i t a r e p o . x a M i s p 0 0 0 , 0 2 : e t a r w o l f m u m i x a M n i m / l a g 0 0 8 * Repeatability due to counting statistics at 2 samples/ft using 3-point averaging. ** Sensor specifications. Actual data resolution depends on sampling rate.