Supermajors need to invest nearly $30 billion in Permian Basin through 2020 HOUSTON–(BUSINESS WIRE)–Jun 18, 2018–A new energy report from business information provider IHS Markit says that the three supermajors active in the Permian Basin — Exxon Mobil, Royal Dutch Shell and Chevron — will need to invest nearly $30 billion in the oil and gas play through 2020 to …