PARIS (AP) _ Pierre Schlumberger, a former chief executive of the world's largest oilfield services company, is dead at the age of 71, his family announced Wednesday.

Schlumberger, who was an invalid after suffering an earlier stroke, died Tuesday in Paris. The cause of death was not disclosed.

He was a son of Marcel Schlumberger, a mechanical engineer who founded Schlumberger Ltd. in the 1920s with his brother, Conrad, a physicist.

Pierre Schlumberger worked for the company for 25 years and was president and chief executive when he retired in 1965. He was succeeded by Jean Riboud, who died last year.

The current chief executive is Michel Vaillaud.

Although the company's roots are in France, its headquarters are in New York.

In addition to providing services to oil drillers, the company also has interests in semiconductor and computer-design businesses.

Pierre Schlumberger was a founder of the Museum of Modern Art in Houston, and contributed to the resoration of the Chateau of Vincennes in France.