Royal Dutch Shell PLC (RDSB.LN) would never have drilled a well in deep water in the Gulf of Mexico with the same design as BP PLC's (BP) blown-out Macondo well, said Shell Chief Executive Peter Voser Tuesday.

"Shell would have drilled the well in a different way and had more options to prevent an accident," he said.

"Clearly the industry wasn't prepared to handle this spill," he added.