随着世界石油市场的发展和演变,现在许多原油长期贸易合同均采用公式计算法,即选用一种或几种参照原油的价格为基础,再加升贴水,其基本公式为:P=A+D,其中:P 为原油结算价格,A 为基准价,D 为升贴水,其中参照价格并不是某种原油某个具体时间的具体成交价,而是与成 With the development and evolution of the world oil market, many crude oil long-term trade contracts now adopt the formula calculation method, which is based on the price of one or several reference crude oil and then increases the premium. The basic formula is: P = A + D, where: P is the crude oil settlement price, A is the benchmark price, D is the premium and discount, where the reference price is not the specific transaction price of a certain crude oil for a specific time,