Kuwait crude oil containing as many as 20 to 30 ppm of hydrogen sulfide.
crude oil containing a substantial amount of sulfur.
crude oil containing a relatively high percentage of sulphur by weight, typically more than 0.5%.
Crude oil with a high sulphur content.
Petroleum with high sulfur content. In this case, high commonly means more than 1.0 weight percent.
crude oil that contains appreciable amounts of sulphur compounds.
A crude oil containing hydrogen sulfide, carbon dioxide or mercaptans.
Crude oil containing appreciable quantities of hydrogen sulfide or other sulfur compounds.
Usually a crude oil that has a sulfur content that is greater than 0.5%. This higher sulfur content affects the quality of the resulting refined products and sometimes means extra processing is required. It is referred to as sour because of the unpleasant smell of the sulfur.