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1、成都理工大學碩士學位論文松遼盆地北部中央坳陷區(qū)泉頭組四段層序地層及沉積演化研究姓名：汪海燕申請學位級別：碩士專業(yè)：礦產(chǎn)普查與勘探指導教師：李仲東20090501成都理工大學碩士學位論文區(qū)泉四段工業(yè)油氣流井各油層在各沉積微相中的分布規(guī)律，揭示了該區(qū)油氣主要分布在河道砂巖中，包括曲流河邊灘、三角洲平原水上分流河道和三角洲前緣水下分流河道。這三種沉積微相最有利于油氣儲集。綜合考慮各項因素，并與三肇凹陷對比分析，在齊家－古龍凹陷Q4-sq1和Q4-sq2層序預測了有利勘探區(qū)。該區(qū)埋深相對較淺，T2斷層發(fā)育，砂巖厚度和砂地比均符合巖性油藏或構造巖
2、性油藏的要求，是三角洲平原和三角洲前緣的過渡地區(qū)，分流河道必然發(fā)育，已有鉆井表明該區(qū)確實存在油氣，從而提出該區(qū)為有利勘探區(qū)。Q4-sq3時期齊家－古龍凹陷地區(qū)的淺水湖泊面積最大，在這個湖泊周圍的三角洲前緣水下分流河道中發(fā)育了很多工業(yè)油流井，說明這些地區(qū)非常有利于油氣聚集，今后應該加強對環(huán)齊家－古龍淺湖周圍的勘探。關鍵詞：松遼盆地北部中央坳陷區(qū)泉四段層序地層沉積相IIAbstractStudyonSequenceStratigraphyandEvolvementofSedimentintheCentralDepressionoftheNo
3、rthernSongliaoBasinIntroductionoftheauthor:WangHaiyan,female,wasborninMay,1983whosetutorwasProfessorLiZhongdong.ShegraduatedfromChengduUniversityofTechnologyininMineralResourceProspectingandexplorationmajorandwasgrantedtheMasterDegreeinJune,2009.AbstractInrecentyears,wit
4、hthedeepeningofgeologicalstudiessuchassequencestratigraphyandfinesedimentaryfacies,FuyuoillayerexplorationhasmadesignificantbreakthroughsinthenorthofSongliaoBasin.LargelithologyreservoirwasfoundinSanzhaosag.Inordertomakeabreakthroughinmoreplaces,thereisanurgentneedtodeep
5、entheunderstandingofpetroleumgeologiccharacteristicsofthemember4oftheQuantouFormationinthecentralDepressionofthenorthernSongliaoBasin.Thearticlestudyonthesequenceandsedimentaryfacies,whichisbasedonthepetroleumgeologytheory,analysistechnologyofhighresolutionsequencestrati
6、graphyandcore,welldrilling,wellloggingandseismicdata.Basedonalargenumberofcoreobservations,thetypesofrockfaciesandsedimentaryfaciesarehighlighted.Itindicatesthatmiddle-scaletroughcrossstratificationfinesandstonefaciesandsmall-scaletroughcrossstratificationsiltstonefacies
7、,totally12typesofrockfaciesaredeveloped,differenttypesofrockfaciescombinedwithacertainwaytoconstitutedifferenttypesofsedimentaryfacies.Thestudyareadevelopedmeanderingriver,shallow-waterdeltaandshallowlake,totally3typesofsedimentaryfacies,including8kindsofintrafacies,20ki
8、ndsofmicrofacies.Relyonthecore,loggingandseismicdataofthestudyarea,therecognizableindicatorsofhigh-reso
