Canadian tar sands oil production from Alberta faces increasing competition from production by Bakken oil fields in N. Dakota. The increasing production from Bakken fields in the U.S. and the lack of pipeline space to bring oil from Alberta to the U.S. is putting the more costly projects on hold. The costlier projects have costs of about $100 a barrel with crude prices dropping below $90 in the U.S. Projects using steam to get bitumen to the surface are viable at $50 a barrel, other projects that require mining the bitumen to make synthetic crude have costs upwards of $100 a barrel. Costs are rising quickly with the cost of geoscientists going up 14.5% in 2012 and salaries over 200,000. Production workers make $35-$39 an hour and can make about $170,000 a year. The boom has pushed costs higher each year. Suncor Energy, the largst producer, is reviewing the viability of large planned multibillion upgrading and mining projects and cutting capital spending in 2012 by 11%. By 2020 oil sands output is forecast to double from the 2011 figure of 1.6 million barrels a day, according to the Canadian Association of Petroleum Producers. In 2012 about 50% of production is from the costlier mining operations....