FILE PHOTO: Oil rig pumpjacks, also known as thirsty birds, extract crude from the Wilmington Field oil deposits area near Long Beach, California July 30, 2013. REUTERS/David McNew//File Photo
FILE PHOTO: Oil rig pumpjacks, also known as thirsty birds, extract crude from the Wilmington Field oil deposits area near Long Beach, California July 30, 2013. REUTERS/David McNew//File Photo