A growing fleet of ships is scanning oceans in search of new oil and gas fields as energy companies, now with more cash thanks to stronger crude prices, gradually resume spending on seismic services after a four-year downturn. A doubling in the area contracted for seismic work in the first quarter this year from the last three months of 2017 has injected optimism into surveillance firms, with a global fleet of about 24 vessels, most of whom struggled to survive in the past years. But they say the road to recovery remains bumpy with producers big and small not keen on drilling for new reserves unless oil prices, which have more than doubled from 2016 lows, stay high for at least […]