Newfield Exploration Co. President and COO David F. Schaible, 46, died Saturday following a brief battle with cancer. He leaves his wife Tina and four children. CEO David A. Trice, who will assume the role of president, said Schaible joined the company when it was founded in 1988, and he joined the board of directors in 2002. When he joined Newfield at the age of 28, Schaible was the youngest member of the founding group of employees. He served as executive vice president, Operations and Acquisitions from November 2004 through July. He also served as vice president, Acquisitions and Development from 1995-2004; manager, Acquisitions and Development from 1992-1995; coordinator, Acquisitions and Marketing from 1991-1992; and as petroleum engineer from 1989 to 1991. Before joining Newfield, Schaible was senior production engineer in the Eastern Gulf Division of Tenneco Oil Exploration and Production Co. He earned a degree in petroleum engineering from Marietta College, GA. He also was active in the Society of Petroleum Engineers.