I've read thousands of oil well drill results over the years and sometimes it's more important to consider WHAT IS NOT IN THE RELEASE when a company is faced with lack lustre results, it's only natural for the PR department of CNE to make lemonade out of lemons. The Mono Arana 1 well is a MISS plain and simple. That is not to conclude however that shale oil is completely abscent, just a disappointment that the most highly skilled and EXPERIENCED oil company in the world resorts to "HIGH PRESSURE" issues as an excuse. Deep shale oil exploration requires one to expect high pressure same as with offshore drilling.
Take off your rose coloured glasses when readng initial oil well drill results if you want to save yourself a few $$$.
I doubt Exxon considers this secondary conventional unquantifiable oil squirt a DISCOVERY.