Lance will become the chairman and chief executive of ConocoPhillips, the upstream company, and Garland will become the chairman and chief executive of the downstream company.
Lance is currently senior vice president of international exploration and production for the company.
A petroleum engineer by trade, he has more than 26 years of industry experience in senior management and technical positions with ConocoPhillips, predecessor Phillips Petroleum and various divisions of Arco.
“ConocoPhillips
