鄂尔多斯盆地中东部深层寒武系地层地球化学指标及其沉积环境演化  

Geochemical Indexes and Sedimentary Environment Evolution of Deep Cambrian Strate in the Central and Eastern Ordos Basin

作　　者：王泉波[1,2] 高其宇 陈瑞 黄国丽 吴小斌[3] 钱昭良[3] Wang Quanbo;Gao Qiyu;Chen Rui;Huang Guoli;Wu Xiaobin;Qian Zhaoliang(Gas Field Company,Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Shaanxi,716000;Yan'an City Natural Gas Exploration and Development Engineering Technology Research Center,Shaanxi,716000;School of Petroleum Engineering and Environmental Engineering,Yan'an University,Shaanxi,716000)

机构地区：[1]陕西延长石油(集团)有限责任公司气田公司,陕西716000 [2]延安市天然气勘探开发工程技术研究中心,陕西716000 [3]延安大学石油工程与环境工程学院,陕西716000

出　　处：《当代化工研究》2024年第19期57-59,共3页Modern Chemical Research

基　　金：陕西省重点实验室基金项目“致密砂岩油藏体积压裂多尺度渗吸规律研究”(项目编号:WSFRM20210502002)。

摘　　要：为保障陕北能源化工基地持续性对天然气、盐岩等化工材料的增长需求,近年来在鄂尔多斯盆地中东部进行了深层勘探工作。本文通过野外露头考察、岩心观察,借助薄片分析、X衍射元素录井等资料的分析应用,对鄂尔多斯盆地中东部寒武系沉积地球化学指标及其演化进行了研究。研究表明,岩石的地球化学指标Sr/Ba、Sr/Cu、V/(V+Ni)在碳酸盐岩段有明显响应。盆地中东部寒武系从早期温暖潮湿型潮坪演化至气候多变的镶边型半局限台地。徐庄组鲕粒生屑滩、张夏组颗粒鲕粒滩、受风化影响的风化三山子组顶部云质滩为最有利储层相带;徐庄组生屑滩及顶部泥质洼地是最有利的烃源岩层。In order to safeguard the growing demand for natural gas,salt rocks and other chemical materials for the continuity of the energy and chemical base in northern Shaanxi,deep exploration work has been carried out in the central-eastern of Ordos Basin in recent years.This paper studies the geochemical index and the evolution of the Cambrian system in central and eastern Ordos Basin through core observation,sheet analysis and X diffraction element logging.The study shows that the geochemical indexes of rock Sr/Ba,Sr/Cu,V/(V+Ni)have obvious response in the carbonate section.The Cambrian system in the central and eastern part of the basin evolved from an early warm and humid tidal flat to a marginal semi-confined platform with variable climate.The Xuzhuang group,Zhangxia group and the top sediment beach and the top mud depression are the most favorable hydrocarbon source strata.

关 键 词：沉积演化 X衍射元素分析 寒武系 鄂尔多斯盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]