Abstract: With data of extracts and carbon isotope(δC¹³), the compositional features of carbon isotopes in the various source rocks and crude oils from Daqing are studied In contrast with crude oil of marine origin, the Daqing oil, which is divided into three types, is formed of terrigenous source materials. Through correlation of carbon isotopes in source rocks and crude oils, it has been identified that the crude oil in Heidimiao comes from No 1 Nenjang Section; the oil in Saertu, Putaohua and Kaotaizi Formations from Qingshankou and the oil in Fuyu and Yangdachengzi from the lower part of No. 1 Qingshankou Section. The direction of oil and gas migration in the Daqing oil field and the depressions on its flanks are also dealt with, taking the pool in Putaohua for illustration.

摘要： 本文利用岩石抽提物和碳同位素(δC¹⁸)资料,研究了松辽盆地不同类型生油岩和各油层组原油的碳同位素组成特征;对比海相原油,大庆原油生成于陆源母质,并可将大庆原油划分为三种类型。通过生油岩与原油碳同位素对比,认为黑帝庙油层原油来源于嫩一段,萨、葡、高组原油主要来自青山口组,扶、杨油层原油来源于青一段下部。是后以葡萄花油层为例,分析了大庆油田及其两侧凹陷的油气运移方向问题。