Irving oil major Exxon Mobil is testing new equipment to reduce methane emissions at 1,000 sites in the Permian Basin of West Texas and southeastern New Mexico.
Exxon Mobil and Chevron both faced protests from environmental activists and some shareholders at their annual meetings Wednesday as they face increasing pressure to do more to combat climate change.
The world's largest oil companies this week posted some of their best earnings in more than three years as they control costs and ride rising oil prices that are now closing in on $70 a barrel
