Geologic significance of Landsat data for 15 giant oil and gas fields

If land satellite data had been available and applied to areas in which giant fields later were found, how effective would have been the use of the data in the exploration effort, and what kind of useful geologic information would have been generated from the satellite images? This was a question which obsessed the writer and prompted the effort to find the answer by obtaining satellite images of 15 giant fields in various parts of the world and interpreting whatever geologic data the images provided. The studies clearly proved that the images would have been of considerable value in exploring for and pinpointing the locations of most of the giants under study. Such a conclusion would indicate that land satellite images and remote sensing data should be a top priority in the search for the future giants to be found in the remaining prospective areas of the earth.