N.Minton/Shutterstock Save for later Print Download Share LinkedIn Twitter Nabors Industries’ energy transition guru Guillermo Sierra believes that the shift to a low-carbon economy is the most important opportunity the oil-field services sector has going forward. It’s an opportunity to not just do good by the planet, he says, but to leverage the sector’s strengths to both survive and thrive in the future. To do so, companies like Nabors — the world's largest land drilling rig operator — are becoming incubators for new energy start-ups. He warns, however, that if these start-ups are to survive, more government help will be needed.