Sweet and sour(the oil and gas industry)

from 2025-10-29

It's mostly depends on H2S

Gemini2.5Pro.icon

a "sweet environment" (or "sweet condition") is a chemical environment that does not contain hydrogen sulfide ($H_{2}S$)1.This term is used to contrast with "sour conditions," which refers to environments where hydrogen sulfide ($H_{2}S$) is present. This terminology is very common in the oil and gas industry.

Addressing the sour gas challenge

Sweet and sour

All production fluids and gases in the oil and gas industry can be classified as being either ‘sweet’ or ‘sour’, depending on the content of acidic compounds such as H2S and CO2.

スウィート・オイルすうぃーとおいる｜JOGMEC石油・天然ガス資源情報ウェブサイト

the term is also used for crude oil, apparently

スウィートオイル（スウィートクルード：「甘い原油」ともいう）とは、軽質（API比重30.42度）で、かつ低硫黄（Low Sulfur 1.43％）という環境的にも優れた特徴を持った原油である