There is a fossil carbon continuum ranging from easy, conventional oil, to deep and ultra-deep offshore oil, to extra-heavy crude oil. With technological progress and rising oil prices, most of these reserves will become conventional, helping to push back peak oil for years.
此外，不管多数人是否相信，原油都远远不是一种单一类型的产品。原油家族成员从容易获取的常规石油，到深层、超深层海洋石油，再到超重原油，数量众多。随着技术进步和油价的提升，这些石油的开采都将变成常规操作，并将“石油峰值论”再向后推延数年。