松潘—阿坝地区高演化沥青的成因分析

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GENETIC ANALYSIS OF THE HIGH MATURATED BITUMEN IN SONGPAN-ABA AREA

Wuxi Research Institute of Experimental Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China

摘要: 经对松潘—阿坝地区窑沟志留系和当多沟泥盆系发现的沥青进行成因分析,确认窑沟志留系和当多沟泥盆系所采沥青样品为高演化固体沥青,源自于下古生界的志留系或寒武系的泥质烃源岩,热演化程度很高,为遭早海西构造运动后使古油藏破坏后的残留部分。本区沥青的成因比较复杂,为冷变质与脱沥青双重作用交替进行的结果,在后期进一步的埋深演化过程中有可能成为再生烃源岩。
- 高演化 /
- 沥青 /
- 成因 /
- 松潘—阿坝地区
Abstract: Based on genetic analysis of the Silurian bitumen from Yaogou and Devonian bitumen from Dangduogou in Songpan-Aba area,it was indicated that these bitumen samples were high maturated solid bitumen which sourced from the Silurian or Cambrian mudstones.They were the relict of the old oil pools which were destructed during the Early Hercynian movement.Formation of the bitumen was very complex.It might be the result of co-activity of cooling metamorphism and debitumination.Hydrocarbon could be generated from the bitumen as they were deeply re-buried.
- high maturity /
- bitumen /
- genetic analysis /
- Songpan-Aba area

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