This sentiment was shared by the speakers at a key industry session on Tuesday at the 21st World Petroleum Congress.

"We have a goal zero," said Wael Sawan, managing director of Qatar Shell companies. That means the target is no injuries to people and zero hydrocarbon leaks, he explained.

Safety is an ever-present focus. Sawan told delegates that he was shocked to learn that as many as 25 people were expected to be killed in the budgeted 500 million man-hours needed to complete Shell's Pearl gas-to-liquids project, according to study work during the design phase.

"If