More than 30,000 people from 100 countries are expected to descend on the white-collar heart of Canada's oilpatch next week for the Global Energy Show, which is to kick off with a keynote address from the head of the Organization of the Petroleum Exporting Countries .

OPEC secretary-general Haitham al-Ghais is set to deliver remarks on Tuesday morning, as recent output increases from his group's members and other producers have put pressure on global crude prices.

Among the other speakers are 20 chief executives from major Canadian and international energy companies and several political leaders, including Alberta Premier Danielle Smith .

Energy show organizers say Calgary is expecting a 30 per cent increase in hotel bookings for the conference and trade show, and that exhibition sp

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