Carbazoles are polar compounds in oils, and they are useful indicators for study of hydrocarbon migration.
咔唑类化合物是原油中极性较大的化合物，是研究油气运移的有效指标。
2
The absorbed hydrocarbon is one of the major indicators in the oil gas geochemical exploration. it can directly reflect the hydrocarbon gas transmited out from oil gas accumulation.