In July, I highlighted James Hamilton's paper "The Changing Face of World Oil Markets," as well as the critical response from Reuters writer John Kemp. But I didn't circle back to also highlight Steven Kopits reply to Kemp that appeared in Platts: "Hamilton has it right on oil."
You should definitely read the entire thing, but here's a short quote below on Capex. Kopits discussed the capex issue in great detail in his Columbia University presentation earlier this year (and if you haven't seen that, then go watch it immediately). But the short and simple version: Oil companies are spending more money, while gaining less production. Here's Kopits:
"...productivity of capital has deteriorated by a factor of four, from $5,300 capex b/d of oil production in 2004 to $21,400 in 2013. This deterioration is net of technology improvements. Geology is not only winning, it is crushing technology.
Hamilton’s graph testifies to the grizzly unraveling of the economics underpinning oil production since 2005. For the oil business as a whole, productivity has imploded, not improved."