RE:RE:RE:RE:The Age of Inflammation Logs will make that decision. If its looks like hydrocardons eapecially oil signature i personnally would case it. They have a good idea of the API from mudlogs. Casing and cement is probably a 3m decision. To run a DST its a easy 1.5. Risk vs reward. The will also know the H2S from the gas detectors. Gets you close anyways. Isotope from that gives you even more info.
if they atent doing that when drilling they are mooks