摘要
咔唑类含氮化合物是一种良好的油气运移示踪剂。咔唑分子9号碳位上的氢原子易与疏导层基质表面的含氧官能团作用产生氢键,导致咔唑类化合物可逆或不可逆地吸附并部分残留在疏导层中。该氢原子受到的屏蔽程度不同,导致化合物受到的吸附几率存在差异。因此,根据咔唑类化合物在正相色谱图上的出峰顺序,可推测其在疏导层中的运移情况;根据不同类型的咔唑类化合物在原油中的绝对含量和比值,可推断油气运移的方向和相对距离。
Carbazole nitrogen compounds appear to be useful molecular indicators for oil migration.Hydrogen bond is easily produced by the reaction between hydrogen atom on No.9 carbon of the carbazole molecule and oxygenic functional group at the matrix surface of carrier beds.They tend to adsorb reversibly or irreversibly onto mineral/solid organic surface and selectively remain in the carrier beds.The absorption probability of the carbazole compounds various depends on the shielded degree of the carbazole hydrogen atom.Fractionation of carbazole compounds during oil migration can be modeled using a normal phase chromatography.Direction and relative distance of oil migration can be deduced using the absolute concentration and ratio of different carbazole compounds in the oil.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2008年第5期38-41,共4页
Petroleum Geology and Recovery Efficiency
关键词
咔唑类化合物
油气运移
示踪
机理
分馏
carbazole nitrogen compounds
hydrocarbon migration
tracing
mechanism
fractionation
