All across the Americas, drilling rigs are being idled as oil prices hover near six-year lows. In Colombia, more than 57 percent have been pulled; in Mexico, 42 percent. Then there’s Venezuela. Starved for hard currency needed to ease a crushing recession and struggling to shore up slumping output, the state oil giant known as PDVSA has been adding rigs at a furious pace to search for new sources of crude. The number has climbed 19 percent this year, signaling a new push that comes at the same time the OPEC nation is urging its fellow members to cut output at Friday’s meeting to support prices. It’s a sacrifice that Venezuelan President Nicolas Maduro — the successor to his mentor, the late Hugo Chavez — isn’t willing to take in his own country, though, as a shortage of dollars fuels widespread shortages and runaway inflation and puts the opposition […]