轮南古潜山东—草湖凹陷东河砂岩段—角砾岩段高分辨率层序地层与沉积相特征  

High resolution sequence stratigraphy and sedimentary facies of Donghe Sandstone Member-Breccia Member in the eastern Lunnan ancient buried hill-Caohu Sag,Tarim Basin

作　　者：张强[1] 张荣虎 余朝丰 ZHANG Qiang;ZHANG Ronghu;YU Chaofeng(PetroChina Hangzhou Research Institute of Geology,Zhejiang 310023,China;不详)

机构地区：[1]中国石油杭州地质研究院

出　　处：《海相油气地质》2023年第2期123-132,共10页Marine Origin Petroleum Geology

基　　金：中国石油油气和新能源分公司项目“塔里木盆地深层碎屑岩重点地区综合地质研究、目标优选、技术攻关与现场实验项目”(编号:2022KT0205)资助。

摘　　要：为查明塔里木盆地塔北隆起轮南古潜山东—草湖凹陷地区下石炭统巴楚组东河砂岩段—角砾岩段的层序地层与沉积相展布特征,基于钻井、测井和地震资料,应用沉积学、层序地层学和地震沉积学原理,对研究区巴楚组的层序地层与沉积环境进行了详细研究。结果表明:(1)从下至上,巴楚组的下部东河砂岩段可划分为1个准层序组、3个准层序(DH1、DH2、DH3),上部角砾岩段可划分为1个准层序组、1个准层序(DH4),4期准层序沉积期均为水进沉积环境。(2)研究区在巴楚组沉积期主要发育扇三角洲-滨岸沉积体系,其中第1期准层序(DH1)与第4期准层序(DH4)以扇三角洲沉积为主,第2期准层序(DH2)与第3期准层序(DH3)以海相滨岸砂岩沉积为主。In order to clarify the sequence stratigraphy and sedimentary facies distribution of Donghe Sandstone Member-Breccia Member of Bachu Formation in the eastern Lunnan ancient buried hill-Caohu Sag of Tabei Uplift,Tarim Basin,the sequence stratigraphy and sedimentary environment in the study area were studied based on drilling,logging and seismic data by applying the principles of sedimentology,sequence stratigraphy and seismic sedimentology.The results show that the Donghe Sandstone Member can be divided into three parasequences,the Breccia Member can be divided into one parasequence,and these four parasequences are named DH-1,DH-2,DH-3 and DH-4 from bottom to top.These four parasequences all developed in marine transgressive sendimentary environment.A fan-delta-shore sedimentary system are mainly developed during the deposition period of Donghe Sandstone Member-Breccia Member in the study area,in which the first and fourth parasequences are dominated by fan-delta deposits,and the second and third parasequences are dominated by marine shore sandstone deposits.The above understanding has an important reference role for the exploration of structural-lithologic oil and gas traps in the eastern Lunnan ancient buried hill-Caohu Sag of the Tabei Uplift.

关 键 词：东河砂岩 准层序 沉积相 早石炭世 草湖凹陷 轮南古潜山 塔北隆起 

分 类 号：TE121.3[石油与天然气工程—油气勘探]