Qatar Petroleum and ExxonMobil Chemical Company, an affiliate of Exxon Mobil Corporation (NYSE:XOM), have signed a Statement of Intent (SOI) to conduct a feasibility study for a world-scale, ethane-based cracker and ethylene derivatives complex in Ras Laffan Industrial City, Qatar. The statement was signed by Abdullah bin Hamad Al-Attiyah, Qatar’s second deputy premier, minister of…