July 7 (Bloomberg) -- Crude output from Mexico's Cantarell, the world's third-largest oil field, is falling at the fastest pace in 12 years as investment limits keep state-owned Petroleos Mexicanos from fully exploiting deposits and finding new ones.
Production at the Gulf of Mexico development dropped 34 percent in May from a year earlier, the biggest decline since October 1995, according to data compiled by the government and Bloomberg. That was when Hurricane Roxanne's 131 miles-per-hour (114-knot) winds shut down offshore wells for a week.
Seven decades after Mexico banned foreign oil investment, President Felipe Calderon is pressing lawmakers to allow Pemex, as the state energy company is known, to hire outside producers to help find and pump petroleum. Cantarell's decline is costing Pemex $20 billion a year in sales at a time when oil prices have never been higher, and the company lacks the funding to find enough new deposits to keep reserves from dwindling.
``We are at the worst time right now of the decline,'' David Shields, an energy analyst and publisher of Mexican oil magazine Energia, said in a July 1 interview. ``They should have been developing the fields to be sustainable.'' Falling production is curbing exports to the U.S., which buys about 80 percent of the oil Mexico sells abroad. Sales to the U.S. declined to 1.07 million barrels a day in May, the lowest since November 1995.
EDIT
http://www.bloomberg.com/apps/news?pid=20601087&sid=aQF381AACFAI&refer=homeOn edit: tweaked headline.