塔里木盆地巴楚隆起HT1井区志留系层序地层分析和隐蔽圈闭识别

Sequence stratigraphic analysis and subtle trap identification of Silurian around well HT1, Bachu Uplift, Tarim Basin

周雨双 李群 姜海健 何金海 张瑜

Zhou Yushuang Li Qun Jiang Haijian He Jinhai Zhang Yu

中国石油化工股份有限公司 石油勘探开发研究院 无锡石油地质研究所, 江苏 无锡 214151 2. 成都理工大学 能源学院, 成都 610059 3. 中国石油化工股份有限公司 石油勘探开发研究院, 北京 100083

Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China 2. School of Energy Resources, Chengdu University of Technology, Chengdu, Sichuan 610059, China 3. SINOPEC Exploration & Production Research Institute, Beijing 100083, China

利用层序地层学和坡折带理论,对塔里木盆地HT1井区的钻/测井、地震、岩心等资料进行分析,将志留系划分为2个三级层序(SQ1,SQ2)和6个体系域.古地貌和沉积相特征研究认为,加里东晚期-海西早期盆地收缩加剧,和田河古隆起进一步隆升形成北倾斜坡,总体以潮坪沉积为主.并总结该区形成岩性圈闭的地质条件,识别出4个形态圈闭.

Based on sequence stratigraphy and slope-break theories,Silurian stratum around well HT1 in the Bachu Uplift of the Tarim Basin has been divided into 2 3rd-grade sequences (SQ1 and SQ2) and 6 systems according to the analyses of drilling,logging,seismic and core data collected from the study area.Studies of ancient landscape and sedimentary facies have indicated that,from the late Caledonian to the early Hercynian,the Tarim Basin contracted severely and the Hetianhe ancient uplift rose to form northward slope (mainly of tide flat facies).Geologic conditions for the formation of lithologic trap in the study area have been concluded and 4 configuration traps have been identified.

https://doi.org/10.11781/sysydz201104359