渤海湾盆地沙垒田凸起CF-2井古生物特征及古环境分析  

Paleontological characteristics and paleoenvironmental analysis of CF-2 well in Shaleitian uplift,Bohai Bay Basin

作　　者：庾永钊 魏文艳 邱琨祁 王岩岩 练斌 Yu Yongzhao;Wei Wenyan;Qiu Kunqi;Wang Yanyan;Lian Bin(Engineering Technology Branch of CNOOC Energy Development Co.,Ltd.Tianjin 300452;CNOOC(China)Limited Tianjin Branch Tianjin 300452)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《石化技术》2025年第3期215-217,共3页Petrochemical Industry Technology

摘　　要：沙垒田凸起北段具有双洼供烃优势,地层划分不同于其他构造,存在一定差异性。通过对渤海海域沙垒田凸起CF-2井1005~3430m岩心资料进行孢粉藻类化石实验分析,依据孢粉及藻类组合,对照渤海湾盆地既有资料,自下而上划分出5个孢粉地层序列。通过孢粉母体进行古环境分析,明确了该构造经历了暖温带-亚热带型气候下的半咸水湖相、暖温带-亚热带型气候下偏淡的半咸水湖相、暖温带-亚热带型气候下淡水陆相、亚热带型气候下淡水陆相、暖温带型气候具一定干旱现象的淡水陆相。The northern section of the Shaleitian uplift has the advantage of dual depression hydrocarbon supply,and the stratigraphic division is different from other structures,with certain differences.This article conducts spore pollen and algal fossil experiments on core data from CF-2 well at a height of 1005 m to 3430 m in the Shaleitian uplift of the Bohai Sea.Based on spore pollen and algal assemblages,and in comparison with existing data in the Bohai Bay Basin,five spore pollen stratigraphic sequences are divided from bottom to top.Through paleoenvironmental analysis of spore parent bodies,the tectonic experience of this structure is clarified.The semi saline lake facies under warm temperate subtropical climate,the slightly diluted semi saline lake facies under warm temperate subtropical climate,and the freshwater terrestrial facies under warm temperate subtropical climate Freshwater terrestrial climate with certain drought phenomena in subtropical climate and warm temperate climate.

关 键 词：孢粉藻类 沙垒田凸起 古环境 

分 类 号：P618.13[天文地球—矿床学]