- GeoRef, Copyright 2005, American Geological Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
The Shell SPS ancillary data format provides a means of encoding field ancillary data on magnetic media in both human readable and machine readable form. The format was defined by groups within Shell Internationale Petroleum Maatschappij in conjunction with comments from other users within the geophysical community. Since the format has gained wide acceptance, the SEG Technical Standards Committee requested that the format be made available publicly by endorsing it as an SEG standard. Shell very graciously agreed to provide this format to the geophysical industry.