额仁淖尔凹陷下白垩统腾格尔组沉积特征及沉积模式

英文篇名：The Sedimentation Characteristics And Sedimentation Model Of Early Cretaceous Tenggeer Formation In E'Rennao'Er Depression
中文刊名：内蒙古石油化工
英文刊名：Inner Mongolia Petrochemical Industry
作者：坛俊颖 ; 王文龙 ; 王延斌 ; 王杰 ; 张默 ; 赵威 ; 吴翔
中文关键词：沉积特征 ; 沉积相 ; 沉积模式 ; 腾格尔组 ; 额仁淖尔凹陷
英文关键词：E'Rennao'Er ; Depression ; Sedimentation ; Characteristic ; Sedimentary Facies ; Sedimentation Model
出版日期：2010-12-30
机构：中国矿业大学地球科学与测绘学院;
年：2010
期：24
出版单位：内蒙古石油化工

摘要

通过对额仁淖尔凹陷下白垩统腾格尔组岩心和薄片的仔细观察,并结合测井、地震及古生物化石资料,对额仁淖尔凹陷下白垩统腾格尔组沉积相进行了全面详细的研究。通过研究表明,研究区下白垩统腾格尔组主要发育扇三角洲相、辫状河三角洲相、湖泊相。通过对研究区腾格尔组沉积特征的分析研究,建立了适合该区的沉积模式。在腾格尔组沉积演化过程中,扇三角洲与辫状河三角洲沉积作用表现为退积型—进积型—退积型。水下分流河道、席状砂与滩坝沉积微相砂体孔渗物性较好,有利于油气聚集。
According to the core and thin section's careful observation of Early Cretaceous Tenggeer Formation in E'RENNAO'ER Depression,and based on logging data and seismic data,sedimentary facies of Early Cretaceous Tenggeer Formation in E'Rennao'Er Depression are studied in detail.The research showed the sedimentary facies types include lacustrine,fan-delta facies and braided river delta facies.Based on the sdudy of Sedimentary facies,the sedimentation model for the area is established.The fan-delta facies and braided river delta facies mainly displaying as retrogradation-progradation-retrogradation in the sedimentary process.The underwater distributary channel,sand sheet and beach-bar sand bodies have favorable porosity and permeability,and they are favorable for oil and gas accumulation.

引文

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