THE DIGITAL WELL LOG FILES PRESENTED HEREIN WERE OBTAINED FROM SEVERAL SOURCES. WELL LOG DATA RECORDED PRIOR TO 1986 WERE DIGITIZED FROM PAPER OR SEPIA PRINTS BY A COMMERCIAL VENDOR AND PURCHASED BY THE COMMISSION FOR PUBLIC DISTRIBUTION. NEARLY ALL OF THE DIGITAL WELL LOG DATA RECORDED IN 1986 AND LATER ARE TAKEN DIRECTLY FROM ELECTRONIC OR OPTICAL MEDIA SUPPLIED BY THE ORIGINAL OPERATOR. THE SOURCE DOCUMENTS IN THE COMMISSION'S FILES REMAIN THE ONLY OFFICIAL RECORD.
THE START DEPTH, STOP DEPTH AND LISTING OF LOG CURVE TYPES AVAILABLE WERE TAKEN DIRECTLY FROM THE WELL HEADER INFORMATION SUPPLIED AT THE BEGINNING OF EACH DIGITAL DATA FILE.