Stephen Gerlach, chairman of Australian independent Santos, will retire on 31 December and be replaced by deputy chairman Peter Coates .
Key Energy has hired Trey Whichard as senior vice president and chief financial officer.
Keith Hill has been appointed chief executive of Vancouver-based Africa Oil Corporation, having previously headed Pearl E&P.
Aberdeen-based Venture Production's Graeme Sword is resigning as a company director with immediate effect.
AIM-listed
