The oil industry has suddenly grown concerned about its methane emissions. In Houston, Shell executives urged the EPA to stick with federal regulations on methane. EOG Resources has agreed to methane targets at the behest of its own shareholders. BP’s CEO Bob Dudley made a big show of support for action on climate change, as well as a more open approach to the way the oil industry does business. Meanwhile, the Trump administration is rolling back methane limits at the federal level. Methane is a powerful greenhouse gas, as much as 80 times…