At an Alberta oil loading terminal, a convoy of big rigs are gearing up to haul Canadian crude oil hundreds of miles through bone dry fields across the U.S. border into Montana, where the oil will be transferred to pipelines and rail cars headed south and west.  Trucks loaded with crude are an increasingly common sight at the border. Production has risen in the world’s fifth largest producer but full pipelines and a rail car shortage have made it difficult for drillers to ship oil out of Canada. Some oil producers are feeling the pressure from customers. Alberta-based Gear Energy Ltd ( GXE.TO ) pumps about 7,500 barrels of oil equivalent per day, and recently had an Asian customer walk away from an […]