地质科技情报2011，Vol.30Issue(6)：110-115,6.
琼东南盆地乐东凹陷烃源岩热史及成熟史模拟
Geothermal and Maturation Histories Modeling of the Source Rocks in the Ledong Sag, Qiongdongnan Basin
摘要
Abstract
The study of the geothermal and maturation histories of the source rocks in the Ledong Sag, Qiongdongnan Basin is significant for the hydrocarbon evaluation and decision for exploration areas. Based on geohistory and geothermal history in,the sag, the source rock maturation history of the sag is reconstructed by Easy% Ro model. It is indicated that Qiongdongnan Basin has a higher paleo and present geothermal gradient, while the paleogeothermal gradient is higher than the present geothermal which it is of great help for the maturity of the source rocks and the generation of gas. The heat flows of the fault period (from Eocene to Early Oligocene) and the accelerated subsidence stage (from Late Miocene to Quaternary) are higher while that of the fault-depression period (Late Oligocene) and the depression period (Early Miocene to Middle Miocene) is relatively lower. The thermal evolution of main source rocks of Yacheng Formation in the Ledong Sag is higher, showing it has entered the hydrocarbon generation peak. This can provide vast hydrocarbon sources for the oil and gas accumulation in the sag. The thermal evolution of source rocks of the Yacheng Formation in the northwest is higher than that in the southeast with a great gas exploration prospect.关键词
烃源岩/热史/成熟史/乐东凹陷Key words
source rock/geothermal history/maturation history/Ledong Sag分类
能源科技引用本文复制引用
刘文超,叶加仁,雷闯,郭飞飞,张洋..琼东南盆地乐东凹陷烃源岩热史及成熟史模拟[J].地质科技情报,2011,30(6):110-115,6.基金项目
中国石油化工股份有限公司上海海洋油气分公司科研项目"琼东南盆地中石化区块油气成藏条件及特征研究" （）
