Oil – Where did it come from?

Watts Up With That?

quote-gold-is-where-you-find-it-according-to-an-old-adage-but-judging-from-the-record-of-our-wallace-pratt-61-44-06Wallace Everette Pratt (1885–1981)

Guest post by David Middleton


I am a petroleum geologist/geophysicist with about 36 years of experience in oil & gas exploration mostly in the Gulf of Mexico.   In light of Andy May’s recent post, Oil – Will we run out?, I thought I might post an essay on oil formation.

Over the past six years, I have been fortunate to have the opportunity to write guest posts for Watts Up With That thanks to Anthony Watts.  Many of my posts have been about issues related to oil production and each of these posts usually triggers comments from Abiogenic Oil advocates.  So, this post’s main thrust will be to explain why the Abiogenic Oil hypothesis is not widely accepted and why we think that the original source of crude oil is organic matter.

It’s possible that oil forms in the mantle all the time. The chemical equations…

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