Mr Brunner formerly served as the executive vice president of operations for Pogo Producing Company, where he was responsible for all aspects of exploration, production, acquisition and divestiture activity for seven business units in the US, Canada, New Zealand and Vietnam.
During his 13-year tenure at Pogo, Mr Brunner served as vice president of operations, overseeing both domestic and international operations. He also served as the resident manager of Thaipo Limited, a subsidiary of Pogo, as well as offshore operations manager.
Felix Dawson, president and CEO of Constellation Energy Partners, said: Stephen has more than 25 years experience successfully managing operations, and his appointment will keep us focused on optimizing our capex program, managing costs and capturing efficiencies across our expanding portfolio and production operations.