鲁西豫东地区奥陶纪岩相古地理特征及其演化_贾艳雨.pdf

书书书第 25 卷第 1 期2023 年2 月古地理学报JOUNAL OF PALAEOGEOGAPHY(Chinese Edition)Vol.25No.1Feb 2023文章编号:16711505(2023)01013315DOI:107605/gdlxb202301009鲁西豫东地区奥陶纪岩相古地理特征及其演化*贾艳雨1，2宿宇驰3，4隋少强1，2贾维明3，4李宗峰3，4杨志波3，4王茜1，2高飞1，2季汉成3，4鲍志东3，41 中国石化新星(北京)新能源研究院有限公司，北京 1000832 中国石化地热资源开发利用重点实验室，北京 1000833 中国石油大学(北京)油气资源与探测国家重点实验室，北京 1022494 中国石油大学(北京)地球科学学院，北京 102249摘要鲁西豫东地区奥陶系碳酸盐岩地层是重要的石油和地下热水储集层。受限于基础地质资料，前人对鲁西豫东地区奥陶系层序划分存在争议，缺少对岩相古地理演化的精细刻画。为明确奥陶系层序地层特征与各期岩相古地理演化特征，通过对鲁西豫东地区周缘野外地质剖面考察、19 口井岩心观察以及测井曲线特征分析，在层序地层格架内，对奥陶纪岩相古地理展布及其演化特征进行了研究。结果表明，根据层序界面类型和最大海泛面发育位置，研究区奥陶系可划分为 SSQ1SSQ2 共 2 个二级层序和 SQ1SQ4 共 4 个三级层序;沉积相类型为海相碳酸盐岩台地，包括局限台地、开阔台地和蒸发台地 3 种亚相，并进一步细分为灰坪、颗粒滩、泥灰坪、灰云坪、云坪、潟湖、含膏云坪和膏云坪 8 种沉积微相;岩相古地理单元整体表现出陆表海的沉积建造特征，各期旋回性沉积为储集层叠置发育奠定了物质基础，云坪、膏云坪、含膏云坪、颗粒滩微相易于形成有利储集空间，是区域地热资源勘探开发的重点领域。关键词层序地层岩相古地理奥陶系鲁西豫东地区第一作者简介贾艳雨，男，1988 年生，高级工程师，研究方向为非常规油气地质、地热地质、新能源战略规划工作。E-mail:。通讯作者简介宿宇驰，男，1994 年生，研究方向为沉积学与含油气盆地分析、地热资源分析与评价研究。E-mail:。贾维明，男，1998 年生，研究方向为沉积学与地热资源勘查研究。E-mail:。中图分类号:P531文献标志码:A*中国石油化工股份有限公司重点科技项目(编号:JP21005)与国家重点研发计划(编号:2017YFC0603104，2018YFC0604304)联合资助。Co-funded by the Key Scientific and Technological Project of Sinopec(No JP21005)and National Key esearch and Development Programof China(Nos 2017YFC0603104，2018YFC0604304)收稿日期:20221010改回日期:20221221Lithofacies palaeogeographic characteristics and evolutionof the Ordovician in western Shandong-eastern Henan areaJIA Yanyu1，2SU Yuchi3，4SUI Shaoqiang1，2JIA Weiming3，4LI Zongfeng3，4YANG Zhibo3，4WANG Xi1，2GAO Fei1，2JI Hancheng3，4BAO Zhidong3，41 Star(Beijing)New Energy esearch Institute Co Ltd，SINOPEC，Beijing 100083，China2 Key Laboratory of Geothermal Exploration and Utilization，SINOPEC，Beijing 100083，China3 State Key Laboratory of Petroleum esources and Prospecting，China University of Petroleum(Beijing)，Beijing 102249，China4 College of Geosciences，China University of Petroleum(Beijing)，Beijing 102249，China古地理学报2023 年 2 月AbstractThe Ordovician carbonate strata in western Shandong-eastern Henan represent importantoil and hot water reservoirs Limited by the basic geological data，there is controversy over sequence clas-sification of Ordovician carbonate in western Shandong-eastern Henan，the lack of detailed investigation ofsedimentary facies and lithofacies palaeogeography Through the field geological profile investigation of theperimeter of the study area，the core observation of 19 wells in the study area and the analysis of the shapeof the logging curve，the lithofacies palaeogeography of Ordovician and its evolution characteristics in thestudy area were reconstructed，in order to clarify the characteristics of sequence stratigraphy and lithofa-cies palaeogeography feature in each period of the Ordovician in the study area esults from the currentstudy suggest that according to the sequence boundaries and the output position of the maximum floodingsurface，the Ordovician sedimentary strata were divided into two second-order sequences of SSQ1SSQ2and four third-order sequences of SQ1SQ4 The Ordovician carbonate strata of study area were formed inthe marine carbonate platform sedimentary environments，including three subfacies，including restrictedplatform，open platform and evaporate platform They were further subdivided into eight sedimentary mi-crofacies，including carbonate flat，grain beach，muddy carbonate flat，carbonate-dolomite flat，dolo-mite flat，lagoon，gypsum-dolomite flat and gypsum-bearing dolomite flat The lithofacies palaeogeogra-phic units of SQ1SQ4 show the sedimentary construction characteristics of land surface seas as a whole，and seawater mainly inflows from the northeast Dolomite flat，gypsum-dolomite flat，gypsum-bearing dol-omite flat，and grain beach microfacies are favorable for the formation of reservoir space，which are thefocused areas of regional hydrocarbon and hot water exploration and development.Key wordssequence stratigraphy，lithofacies palaeogeography，Ordovician，western Shandong-eastern Henan areaAbout the first authorJIA Yanyu，born in 1988，is a senior engineer He is mainly engaged inunconventional oil and gas geology，geothermal geology and new energy strategic planning E-mail:jiay-About the corresponding authorsSU Yuchi，born in 1994 He is mainly engaged in sedimentol-ogy and analysis in petroliferous basins，geothermal resources analysis and evaluationE-mail:.JIA Weiming，born in 1998.He is mainly engaged in sedimentology and geothermalresource exploration.E-mail:鲁西豫东地区具有良好地热资源勘探前景，但目前的勘探程度和取得的经济效益远落后于同等地热地质条件的华北地区(吴乾蕃等，1988;何丽娟等，2001;方宝明，2006)。近年来，中石化新星公司先后在济南、齐河和菏泽、鄄城、阳谷等区域开发了以奥陶系碳酸盐岩为热储的地热田，取得了一定的经济与社会效益，说明下古生界碳酸盐岩具有一定的地热勘探潜力。然而，勘探开发结果表明，鲁西豫东地区奥陶系碳酸盐储集层非均质性强，不同地区热水产量差异较大，有利储集层分布特征有待进一步深入研究。针对研究区奥陶系层序地层及岩相古地理前人进行一系列研究。Meng 等(1997)依据层序地层学理论，将华北地台奥陶系划分为 5 个三级层序;陈建强等(2001)依据 2 条地质剖面将山东淄博地区奥陶系划分为 8 个三级层序，并识别出 4 种层序界面标志;房超等(2020)基于岩心、地球化学、测井和录井等资料将东濮地区中奥陶统划分为3 个三级层序;冯增昭(1979，1986)研究了华北地台东部岩相古地理特征，认为早奥陶世为广阔的陆表海沉积，亮甲山组沉积期海平面下降，中晚奥陶世发育大规模海侵;徐学蓓(2010)依据野外露头对鲁西地块奥陶纪岩相古地理进行研究，认为早奥陶世以发育蒸发台地和局限台地为主，中奥陶世发育了 2 次面式海进和海退，以发育蒸发台地、局限台地和开阔台地为主;林玉祥等(2015，2016)431第 25 卷第 1 期贾艳雨等:鲁西豫东地区奥陶纪岩相古地理特征及其演化运