Chinese Sinopec Group topped the list of oil and gas companies in the world for the year 2019, with revenues of fighting $ 432 billion, ahead of Shell and Aramco, according to Thomson Reuters. < / p> As for Saudi Aramco, it came in third place, and according to the source, Aramco is new to the list of returns, whereby Saudi Aramco's accounts have been secret since the company’s nationalization in the 1970s. Only 2018 revenue is disclosed.