摘要
本文在前人对烃源岩热演化研究的基础上,结合崖南断陷实际地质条件,求取确定热演化数学模型的各项参数,并作了局部修正,使之更加适合崖南断陷的具体情况.研究结果表明:崖南断陷自早第三纪以来,已经历了三次构造旋回,其中第三次仍处于早期断陷阶段;该区在不同地温场和不同构造沉积速率的地质背景下,烃源岩进入成熟门限所需的时间有明显差别,从5～20Ma不等;该区烃源岩演化数学模型的建立,为烃源岩快速定量评价提供了一种较有效的方法。
On the basin of the previous work in the thermal evolution of hydrocarbon source rock, and combined with the practical geologic conditions of Ya'nan fault sag, each coefficient of the thermal evolution mathematical model has been deter-mined in this paper. Some correction of the model has been made, so that it can be applied to the concrete situation in Ya'nan fault sag better. The research we have done is as follows: (l)Since Eogene there have been three tectonic cycles, among them the third cycle is still confined to it's early fault sag stage; (2) The time that hydrocarbon source rock enters mature threshold in this area is different obviously from 5Ma to 20Ma, because there have been different geologic back-grounds in terms of various geothermal fields and tectonic rates of subsidence; (3) The formulation of hydrocarbon source rock mathematical model in this area pro-vides an efficient method for rapid and quantitive assessment of source rock.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第1期25-36,共12页
Earth Science-Journal of China University of Geosciences
关键词
断陷
烃源岩
演化
数学
模拟
Ya'nan fault sag, hydrocarbon source rock evolution,mathemati- cal simulation, Hainan Province.
