LyrArc Article Gist
There are serious issues facing crude oil production from Alberta tar sands which stem from environmental concerns, and the captal intensive, energy intensive, nature of production from tar sands. According to a recent RAND study energy production from tar sands causes 10-30% more greenhouse gas emissions. Add to that destruction of boreal forest, destruction of bird life, and the contamination of water supplies from the lake size tailings ponds used to store spent water from oil sands projects. Large amounts of steam are needed to separate the dirt from the oil in the tar sands. According to Environmental Defence about 4 billion litres of contaminated water leaked from these tailings ponds and this seepage is polluting rivers in Northern Canada. The technology for trapping and storing the carbon dioxide from the production process is still in the research stage. The other hurdle facing the tar sands development is the price of crude which is around $49 a barrel. While some older tar sands plants can operate even at $30 a barrel, newer operations need $60 or $70 per barrel for acceptable returns, according to Prof. Leach, a professor of environmental economics at the University of Alberta. For these reasons Canadian tar sands production which is now at 1.2 million barrels a day is not likely to go much higher or approach the 3.5 million barrels a day predicted for 2015. Petro-Canada said it would suspend 23.8 billion dollars of expansions in Alberta to tar sands projects, and Canadian Natural Resources is cutting its capital spending in half. ...