湖泊辫状河三角洲岩相、层序特征及储层地质模型内蒙古贷岱海湖现代三角洲沉积考察

湖泊辫状河三角洲岩相、层序特征及储层地质模型内蒙古贷岱海湖现代三角洲沉积考察一、本文概述Overviewofthisarticle本文旨在通过对内蒙古岱海湖现代三角洲沉积的详细考察，探讨湖泊辫状河三角洲的岩相、层序特征以及储层地质模型。岱海湖作为典型的内陆湖泊，其三角洲沉积记录了丰富的地质信息，对于理解湖泊沉积环境、河流-湖泊相互作用以及资源勘探具有重要意义。本文将结合实地考察资料、前人研究成果以及地质学、沉积学等相关理论，对岱海湖现代三角洲的沉积特征进行深入分析，以期构建一套适用于该区域的储层地质模型，为后续的油气等资源勘探和开发提供科学依据。Thisarticleaimstoexplorethelithofacies,sequencecharacteristics,andreservoirgeologicalmodelsofthebraidedriverdeltainDaihaiLake,InnerMongolia,throughadetailedinvestigationofmoderndeltasedimentation.Asatypicalinlandlake,DaihaiLake'sdeltasedimentationrecordsrichgeologicalinformation,whichisofgreatsignificanceforunderstandingthelakesedimentaryenvironment,riverlakeinteractions,andresourceexploration.Thisarticlewillcombinefieldinvestigationdata,previousresearchresults,andrelevanttheoriessuchasgeologyandsedimentologytoconductanin-depthanalysisofthesedimentarycharacteristicsofthemoderndeltaofDaihaiLake,inordertoconstructareservoirgeologicalmodelsuitablefortheregionandprovidescientificbasisforsubsequentexplorationanddevelopmentofoilandgasresources.在考察过程中，我们将重点关注三角洲的沉积相带划分、沉积序列的时空演化以及沉积物的粒度、成分、结构等特征。通过对不同相带沉积物的对比分析，揭示三角洲沉积过程中水动力条件、物源供给以及沉积环境等因素的变化规律。同时，结合区域地质背景，探讨三角洲沉积与区域构造运动、气候变化等因素的关联性。Duringtheinvestigationprocess,wewillfocusonthedivisionofsedimentaryfacieszonesinthedelta,thespatiotemporalevolutionofsedimentarysequences,andthecharacteristicsofsedimentgrainsize,composition,andstructure.Bycomparingandanalyzingsedimentsfromdifferentfacieszones,thechangesinhydrodynamicconditions,materialsupply,andsedimentaryenvironmentduringthesedimentationprocessofdeltaarerevealed.Meanwhile,basedontheregionalgeologicalbackground,explorethecorrelationbetweendeltasedimentationandregionaltectonicmovements,climatechange,andotherfactors.在储层地质模型构建方面，我们将综合考虑沉积相带展布、储层物性特征、成岩作用等因素，运用地质统计学方法和三维建模技术，建立一套既能反映三角洲沉积特征又能指导油气勘探的储层地质模型。该模型将为评价储层质量、预测储层分布以及优化勘探部署提供重要依据。Intermsofconstructingreservoirgeologicalmodels,wewillcomprehensivelyconsiderfactorssuchassedimentaryfaciesdistribution,reservoirphysicalcharacteristics,anddiagenesis,andusegeostatisticalmethodsand3Dmodelingtechniquestoestablishareservoirgeologicalmodelthatcanreflectdeltasedimentarycharacteristicsandguideoilandgasexploration.Thismodelwillprovideimportantbasisforevaluatingreservoirquality,predictingreservoirdistribution,andoptimizingexplorationdeployment.本文的研究不仅有助于深化对湖泊辫状河三角洲沉积特征的认识，还将为类似地区的资源勘探和开发提供有益的借鉴和参考。通过本文的研究，我们期望能够为地质学、沉积学以及相关领域的发展做出一定的贡献。Theresearchinthisarticlenotonlyhelpstodeepentheunderstandingofthesedimentarycharacteristicsoflakebraidedriverdelta,butalsoprovidesusefulreferenceandguidanceforresourceexplorationanddevelopmentinsimilarareas.Throughthisstudy,wehopetomakecertaincontributionstothedevelopmentofgeology,sedimentology,andrelatedfields.二、研究区域地质背景Geologicalbackgroundoftheresearcharea研究区域位于内蒙古自治区的贷岱海湖地区，是一个典型的湖泊辫状河三角洲沉积环境。贷岱海湖是一个内陆淡水湖泊，位于华北板块北缘，处于大兴安岭与阴山山脉之间的沉降盆地中。该区域的气候类型属于温带大陆性气候，四季分明，降水主要集中在夏季。TheresearchareaislocatedintheDaiDaiLakeareaofInnerMongoliaAutonomousRegion,whichisatypicalbraidedriverdeltasedimentaryenvironment.DaidaihaiLakeisaninlandfreshwaterlakelocatedonthenorthernedgeoftheNorthChinaPlate,inasubsidencebasinbetweentheGreatXing'anMountainsandtheYinshanMountains.Theclimatetypeinthisregionbelongstotemperatecontinentalclimate,withdistinctfourseasonsandprecipitationmainlyconcentratedinsummer.贷岱海湖地区的地层主要由第四纪松散沉积物组成，其中包含了丰富的湖泊、河流和三角洲沉积序列。这些沉积物主要由河流携带的陆源碎屑物质组成，包括砂、粉砂、粘土等。湖泊辫状河三角洲是该区域的主要沉积类型之一，其形成和发展受到区域构造运动、气候变化和河流作用等多种因素的控制。ThestrataintheDaihaiLakeareaaremainlycomposedofQuaternaryloosesediments,whichcontainrichsedimentarysequencesoflakes,rivers,anddeltas.Thesesedimentsaremainlycomposedofterrestrialdebriscarriedbyrivers,includingsand,silt,clay,etc.Lakebraidedriverdeltaisoneofthemainsedimentarytypesintheregion,anditsformationanddevelopmentarecontrolledbyvariousfactorssuchasregionaltectonicmovement,climatechange,andriveraction.湖泊辫状河三角洲的形成通常与河流的冲刷和填积作用密切相关。在河流进入湖泊的过程中，由于水流的扩散和沉积物的堆积，形成了独特的辫状河三角洲结构。这些辫状河三角洲通常具有复杂的地貌特征和沉积序列，包括分流河道、天然堤、沼泽、湖泊等多种沉积环境。Theformationofbraidedriverdeltasinlakesisusuallycloselyrelatedtotheerosionandfillingofrivers.Duringtheprocessofriversenteringlakes,auniquebraidedriverdeltastructureisformedduetothediffusionofwaterflowandtheaccumulationofsediment.Thesebraidedriverdeltastypicallyhavecomplexgeomorphicfeaturesandsedimentarysequences,includingdistributarychannels,naturalembankments,swamps,lakes,andothersedimentaryenvironments.在贷岱海湖地区，湖泊辫状河三角洲的沉积序列记录了该地区长期以来的气候变化和河流作用历史。通过对这些沉积序列的详细研究，可以深入了解该区域的古气候、古环境以及沉积作用过程，为储层地质模型的建立提供重要的基础资料。IntheDaiDaiLakearea,thesedimentarysequenceofthelakebraidedriverdeltarecordsthelong-termhistoryofclimatechangeandriveractionintheregion.Bystudyingthesesedimentarysequencesindetail,wecangainadeeperunderstandingofthepaleoclimate,paleoenvironment,andsedimentaryprocessesintheregion,providingimportantbasicdatafortheestablishmentofreservoirgeologicalmodels.贷岱海湖地区的湖泊辫状河三角洲沉积环境具有独特的地质背景和沉积特征。对这些特征进行深入研究，有助于揭示该区域的沉积演化历史和油气储层特征，为后续的油气勘探和开发提供重要的科学依据。ThebraidedriverdeltasedimentaryenvironmentintheDaiDaiLakeareahasauniquegeologicalbackgroundandsedimentarycharacteristics.Conductingin-depthresearchonthesefeatureshelpstorevealthesedimentaryevolutionhistoryandoilandgasreservoircharacteristicsoftheregion,providingimportantscientificbasisforsubsequentoilandgasexplorationanddevelopment.三、湖泊辫状河三角洲岩相特征Lithologicalcharacteristicsoflakebraidedriverdelta湖泊辫状河三角洲是湖泊环境中一种特殊的沉积体系，其岩相特征独特，既包含了河流沉积的特征，又体现了湖泊环境的影响。通过对内蒙古岱海湖现代三角洲的详细考察，我们可以揭示其岩相特征及其形成机制。Lakebraidedriverdeltaisaspecialsedimentarysysteminthelakeenvironment,withuniquelithologicalcharacteristicsthatnotonlyincludethecharacteristicsofriversedimentation,butalsoreflecttheinfluenceofthelakeenvironment.ThroughadetailedinvestigationofthemoderndeltaofDaihaiLakeinInnerMongolia,wecanrevealitslithologicalcharacteristicsandformationmechanism.湖泊辫状河三角洲的岩相主要由砂砾岩、砂岩和泥岩组成，其中砂砾岩和砂岩占据主导地位。砂砾岩主要由砾石和砂粒组成，砾石多呈次棱角状，分选性差，反映了辫状河沉积中快速堆积的特点。砂岩则多呈中细粒结构，层理清晰，多发育平行层理和交错层理，反映了水流对砂粒的搬运和沉积作用。Thelithologyoflakebraidedriverdeltaismainlycomposedofconglomerate,sandstone,andmudstone,withconglomerateandsandstonedominating.Sandstoneismainlycomposedofgravelandsandparticles,andthegravelismostlyinasubangularshapewithpoorsorting,reflectingthecharacteristicsofrapidaccumulationinbraidedriversedimentation.Sandstone,ontheotherhand,ismostlyofmediumtofinegrainstructure,withclearbeddingandwell-developedparallelandcrossbedding,reflectingthetransportandsedimentationofsandparticlesbywaterflow.在湖泊辫状河三角洲中，泥岩也是重要的组成部分，它多呈条带状或不规则状分布在砂岩和砂砾岩之间，构成了三角洲沉积的重要分隔层。泥岩的颜色多变，从深灰色到黑色不等，反映了湖泊沉积环境的还原性质。Inbraidedriverdeltasoflakes,mudstoneisalsoanimportantcomponent.Itismostlydistributedinstriporirregularshapesbetweensandstoneandconglomerate,forminganimportantdividinglayerofdeltasedimentation.Thecolorofmudstonevariesfromdarkgraytoblack,reflectingthereducingpropertiesofthelakesedimentaryenvironment.湖泊辫状河三角洲中还发育有大量的沼泽沉积，这些沼泽沉积主要由炭质泥岩和煤组成，它们呈条带状或不规则状分布在三角洲平原地区，是三角洲沉积体系中的重要组成部分。Inthebraidedriverdeltaoflakes,therearealsoalargenumberofswampsediments,whicharemainlycomposedofcarbonaceousmudstoneandcoal.Theyaredistributedinstriporirregularshapesinthedeltaplainareaandareanimportantcomponentofthedeltasedimentarysystem.湖泊辫状河三角洲的岩相特征主要表现为砂砾岩、砂岩和泥岩的交互沉积，以及沼泽沉积的广泛发育。这些岩相特征的形成与辫状河的水流特征、湖泊的水动力条件以及三角洲平原的地形地貌密切相关。通过对这些岩相特征的研究，我们可以深入理解湖泊辫状河三角洲的沉积机制和演化历史。Thelithologicalcharacteristicsofbraidedriverdeltasinlakesaremainlycharacterizedbytheinteractivesedimentationofsandconglomerates,sandstones,andmudstones,aswellasthewidespreaddevelopmentofswampsediments.Theformationoftheselithofaciesfeaturesiscloselyrelatedtotheflowcharacteristicsofbraidedrivers,thehydrodynamicconditionsoflakes,andthetopographyandgeomorphologyofdeltaplains.Bystudyingtheselithologicalfeatures,wecangainadeeperunderstandingofthesedimentarymechanismsandevolutionaryhistoryoflakebraidedriverdeltas.四、湖泊辫状河三角洲层序特征Sequencecharacteristicsoflakebraidedriverdelta湖泊辫状河三角洲的层序特征主要表现为其独特的沉积序列和层序结构。通过对内蒙古贷岱海湖现代三角洲的详细考察，我们可以观察到一系列清晰的层序特征，这些特征为我们理解湖泊辫状河三角洲的形成和演化提供了重要的线索。Thesequencecharacteristicsoflakebraidedriverdeltaaremainlymanifestedbyitsuniquesedimentarysequenceandsequencestructure.ThroughadetailedinvestigationofthemoderndeltaofDaidaihaiLakeinInnerMongolia,wecanobserveaseriesofclearsequencecharacteristics,whichprovideimportantcluesforustounderstandtheformationandevolutionoflakebraidedriverdeltas.湖泊辫状河三角洲的层序主要由三部分组成：底部沉积、三角洲平原沉积和三角洲前缘沉积。底部沉积主要由河流携带的粗粒物质组成，如砂砾石等，这些物质在河流进入湖泊后迅速沉积，形成明显的底积层。Thesequenceoflakebraidedriverdeltamainlyconsistsofthreeparts:bottomsediment,deltaplainsediment,anddeltafrontsediment.Thebottomsedimentismainlycomposedofcoarse-grainedmaterialscarriedbyrivers,suchassandandgravel.Thesematerialsquicklydepositaftertheriverentersthelake,formingobviousbottomsedimentlayers.三角洲平原沉积则主要由河流带来的细粒物质组成，如粉砂和粘土。这些物质在三角洲平原区域逐渐沉积，形成了平坦的沉积平原。在这一阶段，由于河流的冲刷和搬运作用，平原上会形成一系列的河道和河漫滩，这些河道和河漫滩的沉积物构成了三角洲平原的主要沉积层序。Thesedimentationofdeltaplainsismainlycomposedoffine-grainedmaterialsbroughtbyrivers,suchassiltandclay.Thesesubstancesgraduallydepositedinthedeltaplainarea,formingaflatsedimentaryplain.Atthisstage,duetotheerosionandtransportationofrivers,aseriesofchannelsandfloodplainswillformontheplain,andthesedimentofthesechannelsandfloodplainsconstitutesthemainsedimentarysequenceofthedeltaplain.三角洲前缘沉积是湖泊辫状河三角洲层序的最上层，主要由湖泊中的细粒沉积物组成，如泥质沉积物。这些沉积物在湖泊中逐渐沉积，形成了三角洲前缘的沉积层序。在这一阶段，由于湖泊的波浪作用和湖水的流动，沉积物会在三角洲前缘区域形成一系列的沙坝和滩地，这些沙坝和滩地的沉积物构成了三角洲前缘的主要沉积层序。Thedeltafrontsedimentistheupperlayerofthebraidedriverdeltasequenceinlakes,mainlycomposedoffine-grainedsedimentsinlakes,suchasmuddysediments.Thesesedimentsgraduallydepositedinthelake,formingasedimentarysequenceofthedeltafront.Atthisstage,duetothewaveactionofthelakeandtheflowoflakewater,sedimentwillformaseriesofsandbarsandshoalsinthedeltafrontarea.Thesedimentofthesesandbarsandshoalsconstitutesthemainsedimentarysequenceofthedeltafront.通过对内蒙古贷岱海湖现代三角洲的考察，我们可以发现，湖泊辫状河三角洲的层序特征具有明显的时空变化性。在不同的时间和空间尺度上，湖泊辫状河三角洲的层序特征会有所不同，这主要取决于河流的流量、湖泊的水位、沉积物的类型和来源等因素。ThroughtheinvestigationofthemoderndeltaofDaidaihaiLakeinInnerMongolia,wecanfindthatthesequencecharacteristicsofthelakebraidedriverdeltahaveobviousspatiotemporalvariability.Thesequencecharacteristicsoflakebraidedriverdeltasvaryatdifferenttimeandspatialscales,mainlydependingonfactorssuchasriverflow,lakewaterlevel,sedimenttypeandsource.湖泊辫状河三角洲的层序特征是由其独特的沉积环境和沉积过程所决定的。通过对这些层序特征的研究和分析，我们可以更深入地理解湖泊辫状河三角洲的形成和演化过程，为后续的储层地质模型建立和油气勘探提供重要的科学依据。Thesequencecharacteristicsoflakebraidedriverdeltasaredeterminedbytheiruniquesedimentaryenvironmentandprocesses.Bystudyingandanalyzingthesesequencecharacteristics,wecangainadeeperunderstandingoftheformationandevolutionprocessoflakebraidedriverdeltas,providingimportantscientificbasisfortheestablishmentofreservoirgeologicalmodelsandoilandgasexplorationinthefuture.五、储层地质模型建立Establishmentofreservoirgeologicalmodel储层地质模型的建立是湖泊辫状河三角洲沉积体系研究的核心内容之一。通过对内蒙古贷岱海湖现代三角洲沉积的详细考察，我们可以根据湖泊辫状河三角洲的岩相、层序特征，结合区域地质背景，构建出储层地质模型。Theestablishmentofreservoirgeologicalmodelsisoneofthecorecontentsofthestudyonthesedimentarysystemoflakebraidedriverdelta.ByconductingadetailedinvestigationofthemoderndeltasedimentationofLakeDaihaiinInnerMongolia,wecanconstructareservoirgeologicalmodelbasedonthelithofaciesandsequencecharacteristicsofthelakebraidedriverdelta,combinedwiththeregionalgeologicalbackground.在建立储层地质模型时，我们采用了多种方法和手段，包括地质调查、钻探取样、地球物理勘探、测井分析等。通过对贷岱海湖地区的详细地质调查，我们了解了该地区的构造背景、沉积环境、沉积序列等基本情况。在此基础上，我们利用钻探取样获得的岩心资料，详细分析了湖泊辫状河三角洲的岩相、层序特征，确定了各沉积单元的类型、厚度、分布范围等。Whenestablishingareservoirgeologicalmodel,weadoptedvariousmethodsandmeans,includinggeologicalsurveys,drillingsampling,geophysicalexploration,welllogginganalysis,etc.ThroughadetailedgeologicalsurveyoftheDaihaiLakearea,wehavegainedanunderstandingofthebasicinformationofthearea,includingitstectonicbackground,sedimentaryenvironment,andsedimentarysequence.Onthisbasis,weusedcoredataobtainedfromdrillingsamplingtoanalyzeindetailthelithofaciesandsequencecharacteristicsoflakebraidedriverdelta,anddeterminedthetypes,thicknesses,anddistributionrangesofeachsedimentaryunit.同时，我们还结合地球物理勘探和测井分析，对储层的物性特征进行了深入研究。通过地震资料解释和测井曲线的综合分析，我们确定了储层的厚度、孔隙度、渗透率等关键参数，为储层评价和预测提供了重要依据。Atthesametime,wealsoconductedin-depthresearchonthephysicalcharacteristicsofthereservoirbycombininggeophysicalexplorationandwelllogginganalysis.Throughthecomprehensiveanalysisofseismicdatainterpretationandloggingcurves,wehavedeterminedkeyparameterssuchasreservoirthickness,porosity,andpermeability,providingimportantbasisforreservoirevaluationandprediction.在储层地质模型建立过程中，我们还注重模型的动态性和可预测性。通过对现代三角洲沉积的考察，我们了解了湖泊辫状河三角洲沉积的动态变化过程，为模型的动态更新提供了基础数据。我们利用先进的数值模拟技术和地质统计方法，对储层进行了精细刻画和预测，为后续的油气勘探和开发提供了有力支持。Intheprocessofestablishingreservoirgeologicalmodels,wealsopayattentiontothedynamicsandpredictabilityofthemodels.Throughtheinvestigationofmoderndeltasedimentation,wehavegainedanunderstandingofthedynamicchangesinlakebraidedriverdeltasedimentation,providingbasicdataforthedynamicupdatingofthemodel.Wehaveutilizedadvancednumericalsimulationtechniquesandgeologicalstatisticalmethodstofinelycharacterizeandpredictreservoirs,providingstrongsupportforsubsequentoilandgasexplorationanddevelopment.通过对内蒙古贷岱海湖现代三角洲沉积的考察和研究，我们成功建立了湖泊辫状河三角洲储层地质模型。该模型不仅揭示了储层的空间展布规律和物性特征，还为油气勘探和开发提供了重要的参考依据。未来，我们将继续深化对该地区的研究，不断完善和优化储层地质模型，为油气资源的可持续利用做出更大的贡献。WehavesuccessfullyestablishedageologicalmodeloflakebraidedriverdeltareservoirsthroughtheinvestigationandstudyofmoderndeltasedimentationinDaihaiLake,InnerMongolia.Thismodelnotonlyrevealsthespatialdistributionpatternandphysicalcharacteristicsofreservoirs,butalsoprovidesimportantreferencebasisforoilandgasexplorationanddevelopment.Inthefuture,wewillcontinuetodeepenourresearchontheregion,continuouslyimproveandoptimizereservoirgeologicalmodels,andmakegreatercontributionstothesustainableutilizationofoilandgasresources.六、内蒙古贷岱海湖现代三角洲沉积考察AStudyontheModernDeltaSedimentationofLakeDaidaihaiinInnerMongolia内蒙古贷岱海湖，作为华北地区重要的内陆湖泊，其现代三角洲沉积体系是研究湖泊辫状河三角洲岩相、层序特征及储层地质模型的理想场所。本次考察旨在通过实地考察和综合分析，揭示贷岱海湖三角洲沉积的成因机制、发育过程及其对储层地质模型的影响。DaidaihaiLakeinInnerMongolia,asanimportantinlandlakeinNorthChina,isanidealplaceforstudyingthelithology,sequencecharacteristics,andreservoirgeologicalmodelsofbraidedriverdeltainitsmoderndeltasedimentarysystem.Thepurposeofthisinvestigationistorevealthegenesismechanism,developmentprocess,andimpactonreservoirgeologicalmodelsofthedeltasedimentationintheDaiDaiLakethroughon-siteinvestigationandcomprehensiveanalysis.在实地考察中，我们详细观察了贷岱海湖三角洲的地貌形态、沉积构造和沉积物特征。通过高分辨率的地球物理勘探和钻探取样，我们发现三角洲沉积主要由砂质和泥质沉积物组成，沉积层序清晰，具有明显的层理构造和韵律性。我们还观察到三角洲前缘地区的沉积物粒度较细，分布广泛，表明该区域经历了较强的水动力条件。Inthefieldinvestigation,wecarefullyobservedthegeomorphicmorphology,sedimentarystructures,andsedimentcharacteristicsoftheDaiDaiLakeDelta.Throughhigh-resolutiongeophysicalexplorationanddrillingsampling,wefoundthatdeltasedimentsaremainlycomposedofsandyandmuddysediments,withclearsedimentarysequencesandobviousbeddingstructuresandrhythmicity.Wealsoobservedthatthesedimentgrainsizeinthedeltafrontareaisrelativelyfineandwidelydistributed,indicatingthattheregionhasexperiencedstronghydrodynamicconditions.综合分析认为，贷岱海湖三角洲的沉积主要受到河流、湖泊和风的共同作用。河流携带大量沉积物进入湖泊，形成辫状河三角洲的典型沉积特征。湖泊的波动和风的作用则对三角洲的沉积过程产生了重要影响，导致沉积物在空间上的分布和层序上的变化。ComprehensiveanalysissuggeststhatthesedimentationoftheDaiDaiLakeDeltaismainlyinfluencedbythecombinedeffectsofrivers,lakes,andwinds.Riverscarryalargeamountofsedimentintolakes,formingatypicalsedimentaryfeatureofbraidedriverdeltas.Thefluctuationsoflakesandtheinfluenceofwindhaveasignificantimpactonthesedimentationprocessofdeltas,leadingtochangesinthespatialdistributionandsequenceofsediments.本次考察不仅为湖泊辫状河三角洲岩相、层序特征及储层地质模型的研究提供了丰富的基础资料，也为类似地区的沉积学研究提供了有益的借鉴。未来，我们将继续深化对贷岱海湖三角洲沉积过程的认识，以期更好地预测和评价该地区的储层地质特征。Thisinvestigationnotonlyprovidesrichbasicdataforthestudyoflithology,sequencecharacteristics,andreservoirgeologicalmodelsoflakebraidedriverdelta,butalsoprovidesusefulreferenceforsedimentologicalresearchinsimilarareas.Inthefuture,wewillcontinuetodeepenourunderstandingofthesedimentaryprocessoftheDaiDaiLakeDelta,inordertobetterpredictandevaluatethegeologicalcharacteristicsofthereservoirintheregion.七、结论与建议Conclusionandrecommendations经过对内蒙古岱海湖现代三角洲沉积的详细考察与研究，我们对其湖泊辫状河三角洲的岩相、层序特征以及储层地质模型有了更为深入的理解。岱海湖的现代三角洲沉积体系表现出了典型的辫状河三角洲特点，其岩相组成丰富多样，主要包括砾石、砂岩、泥岩等，这些岩石类型在垂向上的层序特征明显，反映了从河流到湖泊的沉积环境变迁。AfteradetailedinvestigationandstudyofthemoderndeltasedimentationinDaihaiLake,InnerMongolia,wehavegainedadeeperunderstandingofthelithology,sequencecharacteristics,andreservoirgeologicalmodelsofitsbraidedriverdelta.ThemoderndeltasedimentarysystemofDaihaiLakeexhibitstypicalbraidedriverdeltacharacteristics,withrichanddiverselithofaciescompositions,mainlyincludinggravel,sandstone,mudstone,etc.Theserocktypeshaveobviousverticalsequencecharacteristics,reflectingthesedimentaryenvironmentchangesfromriverstolakes.在层序特征方面，我们观察到明显的韵律性和旋回性，这些特征反映了湖泊与河流相互作用的过程。我们还发现，由于湖泊的周期性升降和河流的摆动，使得三角洲沉积体系在平面上呈现出复杂多变的形态。Intermsofsequencecharacteristics,weobservedobviousrhythmicityandcyclicity,whichreflecttheprocessofinteractionbetweenlakesandrivers.Wealsofoundthatduetotheperiodicriseandfalloflakesandtheoscillationofrivers,thedeltasedimentarysystempresentsacomplexandvariablemorphologyontheplane.对于储层地质模型，我们的研究表明，辫状河三角洲的前缘砂体是主要的储集层，其储集性能受到多种因素的影响，包括岩石类型、粒度、分选性等。同时，我们还发现，沉积环境的变迁对储层物性有重要影响，因此，对储层物性的预测和评价需要综合考虑多种因素。Forreservoirgeologicalmodels,ourresearchindicatesthatthefrontsandbodyofbraidedriverdeltaisthemainreservoir,anditsreservoirperformanceisinfluencedbyvariousfactors,includingrocktype,particlesize,sorting,etc.Meanwhile,wealsofoundthatthechangesinsedimentaryenvironmenthaveasignificantimpactonreservoirproperties.Therefore,thepredictionandevaluationofreservoirpropertiesneedtocomprehensivelyconsidermultiplefactors.基于以上研究，我们提出以下建议：对于内蒙古岱海湖地区的油气勘探，应重点关注辫状河三角洲的前缘砂体，这些地区具有较大的勘探潜力。对于储层的评价，应综合考虑岩石类型、粒度、分选性等因素，以提高评价的准确性。对于未来的研究，建议进一步深入探索湖泊辫状河三角洲的沉积机制和演化过程，以更好地理解和预测储层的分布和物性。Basedontheaboveresearch,weproposethefollowingsuggestions:foroilandgasexplorationintheDaihaiLakeareaofInnerMongolia,specialattentionshouldbepaidtothefrontsandbodiesofthebraidedriverdelta,whichhavegreatexplorationpotential.Fortheevaluationofreservoirs,factorssuchasrocktype,particlesize,andsortingshouldbecomprehensivelyconsideredtoimprovetheaccuracyoftheevaluation.Forfutureresearch,itisrecommendedtofurtherexplorethesedimentarymechanismsandevolutionaryprocessesoflakebraidedriverdeltas,inordertobetterunderstandandpredictthedistributionandphysicalpropertiesofreservoirs.内蒙古岱海湖的现代三角洲沉积体系是一个复杂而有趣的研究对象，其岩相、层序特征和储层地质模型都具有重要的理论和实践意义。我们期待在未来的研究中，能够进一步揭