Several geochemical factors which may have influence on the compounds are also discussed,such as paleoenvironment thermal maturity,original source materical and oil migration.

• 结果表明原油中吡咯类化合物的丰度与相对分布可能受控于多种地球化学因素，运移分馏作用与沉积环境可能是控制该类化合物的主要因素。