关键词: 陆相烃源岩, 模拟实验, 热演化, 凝析油

Abstract: In order to investigate the generation and evolution of the condensate oil from the continental source rocks during deep burial, the high temperature and pressure simulation was conducted using samples from Shu 13, Manan 603 in the western sag and Tao 10 in the eastern sag of the Liaohe Basin. Results show that the maximum yield of condensate oil generated from type-I kerogen (source rocks from Shu 13) was 2.32 mg/g TOC, which occurred at the vitrinite reflectance (VR) of 1.76% Ro and the main components were hydrocarbons with low molecular mass. Those may indicate that such condensate oil mainly generated from secondary cracking of the liquid hydrocarbon. The maximum yield of condensate oil in type-II kerogen (source rocks from Manan 603) was 2.28 mg/g TOC, and appeared at VR of 2.42% Ro, which was obviously later than that of type-I kerogen. These condensate oil products were mainly composed of hydrocarbons with higher molecular mass and part of hydrocarbons with low molecular mass. The yields of condensate oil of type-III kerogen (source rocks from Tao 10) were the lowest and the maximum yield was only 0.92 mg/g TOC. Those results may indicate that the potential of condensate oil derived from type-III organic matter was poor.

Key words: continental source rock, simulation experiment, thermal evolution, condensate oil