(Reuters) – U.S. energy firms this week increased the number of oil rigs operating for the first time in seven weeks after oil futures soared nearly 40 percent this year. FILE PHOTO: A Baker Hughes sign is displayed outside the oil logistics company’s local office in Sherwood Park, near Edmonton, Alberta, Canada November 13, 2016. REUTERS/Chris Helgren/File Photo Companies added 15 oil rigs in the week to April 5, the biggest increase since May, bringing the total count to 831, General Electric Co’s Baker Hughes energy services firm said in its closely followed report on Friday. The rig count fell to its lowest since April 2018 in the previous week. The U.S. rig count, an early indicator of future output, is higher than a year ago when 808 rigs were active. After Texas pushed the United States over the last decade to become the world’s biggest oil producer last […]