Dongying North part deep sand Shasi low Subsegmental of gas condensate methane and ethane are lighter isotopes shows that Crackinggasoil characteristics, rather than kerogen pyrolysis gas.
东营北带深层沙四下凝析油气甲乙烷同位素均较轻，表现出明显的原油裂解气特征，而非干酪根裂解气。
2
The crackinggas of reservoir oil is an important source of natural gas.
油藏原油的裂解气是形成天然气气藏的重要气源。
3
The effects of catalyst composition and properties on yield distribution of catalytic cracking of coker gasoil containing feedstocks were studied.