Chevron Corporation announced that Michael K. Wirth, executive vice president of Midstream and Development, has been named vice chairman, effective February 1, 2017. In assuming his new role, Wirth will join the company’s Board of Directors and add Policy, Government & Public Affairs to his existing portfolio of responsibilities. Currently, Wirth oversees Midstream and Development, accountable for supply and trading, gas commercialization and the company’s midstream operating units engaged in transportation and power as well as corporate strategy and business development. Before assuming his current role, Wirth was executive vice president of Downstream & Chemicals.