Mexico's oil reserves slashed by a fifth  

Platts has a look at Mexico's declining oil reserves - Mexico's reserves slashed by a fifth. The article also notes that the West's biggest integrated oil companies also failed to replace, on average, their production with new reserves for a second year running, with just half of all production replenished over the year.

"ExxonMobil, Chevron, ConocoPhillips, BP, Shell and Total saw their combined proved oil and gas reserves slip to 84.6 billion boe last year, the biggest year-on-year drop and the lowest level in eight years."