file:conversion-of-well-log-data-to-subsurface-stratigraphic-and-structural-information_fig1.png|{{figure number|1}}Surface projection of well course for a nominally vertical well. © Don Clarke, Dept. of OH Properties, City of Long Beach, CA). | file:conversion-of-well-log-data-to-subsurface-stratigraphic-and-structural-information_fig1.png|{{figure number|1}}Surface projection of well course for a nominally vertical well. © Don Clarke, Dept. of OH Properties, City of Long Beach, CA). |