摘要
我国多旋回叠合盆地在多期构造运动的背景下具备多期生烃、多期充注、多期成藏和改造的特征,厘定不同期次油气的成藏时间一直是多旋回叠合盆地油气成藏研究亟待解决的难题。综述国内外油气成藏年代学的研究现状和发展趋势,剖析了不同油气成藏年代学方法的主要特点和局限性,认为油气成藏年代学研究经历了从早期传统的油气成藏年代学方法到现今油气成藏同位素测年法的发展,实现了定性或半定量向定量研究的重要转变,其中方解石激光原位U-Pb同位素定年法可以精确厘定多旋回叠合盆地中不同期次油气的成藏时间,将油气成藏年代学研究推向了新的里程碑。据此提出综合运用多种油气成藏年代学方法相互补充、印证,进而得到全面的油气成藏年代信息,将成为现代油气成藏年代学在多旋回叠合盆地应用发展的重要趋势。
The polycyclic superimposed basins in China are characterized by multiple phases of hydrocarbon generation,multiple phases of hydrocarbon charge,multiple phases of hydrocarbon accumulation and alteration under the background of multi⁃stage tectonic movements,and it has always been a challenge to be solved for research on hydrocarbon accumulation in polycyclic superimposed basins to accurately determine the timings of hydrocarbon charge in different phases.The current research status and development trend of hydrocarbon accumulation geochronology are reviewed,and the main features and limitations of different hydrocarbon accumulation geochronological methods are systematically analyzed.It is believed that the study of hydrocarbon accumulation geochronology has experienced the development from the traditional hydrocarbon accumulation geochronology method in the early period to the isotope dating method in the present,which has realized an important transition from qualitative or semi⁃quantitative to quantitative study.Among them,the laser in⁃situ U⁃Pb dating of calcite can accurately determine the timings of different phases of hydrocarbon charge in polycyclic superimposed basins and pushes the study of hydrocarbon accumulation geochronology to a new milestone.It is proposed that the integrated use of multiple hydrocarbon accumulation geochronological methods to complement and corroborate each other to obtain comprehensive geochronological information,which will become an important trend in the development of modern hydrocarbon accumulation geochronology in polycyclic superimposed basins.
作者
陈家旭
郭小文
刘国全
朱华汇
邹磊落
张绍辉
CHEN Jiaxu;GUO Xiaowen;LIU Guoquan;ZHU Huahui;ZOU Leiluo;ZHANG Shaohui(Research Institute of Exploration and Development,PetroChina Dagang Oilfield Company,Tianjin 300280,China;Key Laboratory of Tectonics and Petroleum Resources,Ministry of Education,China University of Geosciences,Wuhan,Hubei 430074,China)
出处
《录井工程》
2024年第2期132-139,共8页
Mud Logging Engineering
