江汉盆地拖市地区新沟嘴组下段Ⅲ油组湖泊风暴沉积研究  

Study on Lacustrine Storm Deposition in the Pay Zone No.3 of the Lower Member of Xingouzui Formation in the Tuoshi Area of Jianghan Basin

作　　者：程洁 CHENG Jie(Exploration&Development Research Institute of Jianghan Qlfield Company,Sinopec,Wuhan,Hubei,430223,China)

机构地区：[1]中石化江汉油田分公司勘探开发研究院,湖北武汉430223

出　　处：《江汉石油职工大学学报》2021年第1期8-11,19,共5页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：依据粒度特征和沉积构造特征,在拖市地区新沟嘴组下段Ⅲ油组中发现了湖泊风暴沉积的证据,其垂向层序自下而上分为凝聚层段(凝聚粒序层)、平行层理段、丘状交错层理段、波纹状交错层理段和具水平层理泥岩段等5段,各段形成于不同沉积背景。拖市地区新沟嘴组下段Ⅲ油组发育典型的湖泊风暴沉积,这一认识为滩坝砂体沉积的成因提供了新线索。According to the characteristics of grain size and sedimentary structure,the evidence of lacustrine storm deposition is found in the pay zone No.3 of the lower member of Xingouzui Formation in the Tuoshi area,which is divided from bottom to top into five sections:coagulated grain sequence,parallel bedding,moundy cross bedding,corrugated cross bedding and mudstone with horizontal bedding,which were formed in the different sedimentary settings.The typical lacustrine storm deposition was developed in the pay zone No.3 of the lower member of Xingouzui Formation in the Tuoshi area,which provides a new clue for the genesis of beach-bar sand deposition.

关 键 词：江汉盆地 潜江凹陷 拖市地区 新沟嘴组 湖泊 风暴沉积 

分 类 号：P512.2[天文地球—地质学]