Chevron operates one of the world's largest Hadoop clusters.

http://hadoopilluminated.com/hadoop_illuminated/Hadoop_Use_C... a link for the unbelievers

Oil industry is extremely high-tech.

High tech but often as cheap as stallholders. I did tech support for one big firm at some point, and their IT was shockingly old. I asked why and was told that's how you shave profits in lean years -- which is fair enough. When you've been around as long as these guys have been, your priorities probably don't include "being fashionably high-tech".

Nah, don't you know that the oil industry is just digging holes. Real high-tech is working on hard problems like how to deliver grilled cheese sandwiches

Artisanal, organic, locally sourced, (and optionally) vegan and gluten free grilled cheese sandwiches.

Organic and gluten free oil should not be too hard. Locally sourced is pretty location-dependent. Artisanal may take more work; whether one considers petroleum vegan is an interesting philosophical question.

I sense a business opportunity here; perhaps artisanal, organic, locally sourced oil sandwiches?

Drill an artesian well and hope that nobody notices the spelling?

can confirm; am writing business plan and looking for seed funding ;-D.