"Logging" the materials coming up from the drilling site, can help identify the types of rock coming from and what we are drilling through. This occurs, usually by collecting the rock chips coming up with the "mud". the mud passes over a shaker screen, to remove all the debris coming up with the mud from depth. Geologists review this material and log the well, foot by foot. If we suddenly pas through a cap material and experience pressure the blowout preventer is meant to contain it. The next time we drill a well we might be better prepared are we approach the pressure zone, by being in tune with the rocls we previously encountered as we approached the cap.
I have no information at this point that we are attempting to recover oil form a carbonate debris flow breccia... indeed I would doubt it. We will be drilling through silicate based sedimentatary rocks from what I can see. Most of the carbonates (limestones and dolomites) are north of the Maya Mtns from what I can see.
It matters little. We are looking for any porous permeable rock that lies beneath some natural cap layer, probably salt in this area, containing commercial quantities of oil or gas. Oiljob
