Schlumberger Limited announced today that vice chairman Victor Grijalva will retire at the end of the year. decades. made an enormous contribution to the success of the company during a period which has seen many changes and huge swings in upstream activity. engineer in Houston in 1964. North American operations in 1985. Having steered Schlumberger through the mid-1980 industry downturn, he was named executive vice president of Schlumberger Wireline and Testing and Anadrill in 1989 and executive vice president of Oilfield Services in 1993. Just under ten years later in 1998, Grijalva became vice chairman of Schlumberger Limited. of the American Institute of Electrical Engineers and the Society of Petroleum Engineers.