油砂是由砂、水和重而粘稠的碳氢化合物(常称之为沥青)等组成的一种混合物,可用于提炼石油。在过去的几年里由于传统石油供应量的减少以及油价暴涨使得石油公司开始关注油砂的开发利用。然而随着2008年秋季油价的下降,许多企业开始取消 Oil sands are a mixture of sand, water and heavy, viscous hydrocarbons (often called bitumen) that can be used to extract oil. In the past few years, oil companies began to pay attention to the development and utilization of oil sands due to the decrease of traditional oil supply and soaring oil prices. However, with the fall in oil prices in the fall of 2008, many companies started to cancel