演武—三岔地区侏罗系油藏分布规律研究及产建目标优选

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1、分类号：ＴＰ３９１学校代码：１０６９７密级：公开学号：２０１５０２０４９＿颀：ｂ专业字位ｉ２文ＤｉｓｓｅｒｔａｔｉｏｎｆｏｒｔｈｅＰｒｏｆｅｓｓｉｏｎａｌＤｅｇｒｅｅｏｆＭａｓｔｅｒ演武－三岔地区侏罗系油藏分布规律研究及产建目标优选学科名称：石油与天然气工程专业学位类别：工程硕士作者：苟幸福指导老师：朱玉双教授西北大学学位评定委员会二〇一八年摘要演武-三岔地区在鄂尔多斯盆地上横跨两个构造单元，分别是伊陕斜坡和天环坳陷构造单元，构造格局呈现出两边高，上下低，

2、中间亘隆的格局形态。前侏罗纪的古地貌发育有三条支河谷，呈现出北部发育有斜坡，南边发育有高地，中间发育有支沟的整体形态。通过研究可明确延安组的延9，延8和延7发育辫状河三角洲平原沉积，而延10发育为辫状河河流相沉积。通过沉积相的划分，储层特征的认识，得出研究区的成藏规律，即河谷侧翼的坡咀，近河谷高地以及河间丘地带都是油气富集的有利模式，因为鼻隆构造和河道砂共同创造了储油的有利圈闭，而且呈串珠状分布的油藏在本研究区内形成了千万吨级的侏罗系油藏群。结合勘探开发实践，探索出适合于镇原地区的“浅层油藏快速建产”技术体系，助推油田稳产、上

3、产。关键词：侏罗系延安组古地貌油藏富集规律IAbstractTheZhenyuan-Yanwu-SanchaoareastraddlestheYishanSlopeandTianhuandepression,Inthewesternpartofthethrustbelt,ithasthepresentstructuralpatternof“highintheeastandwest,lowinthenorthandsouth,andmid-dragon”,localdevelopmentofnasalupliftinthisst

4、udyarea.ThepalaeogenomorphologyoftheformerJurassicdevelopedthreebranchesoftherivervalley,andshowedtheformof"thenorthslope,themiddlebranchditchandtheSouthhighland".ThebraidedriverdeltaplaindepositsweredevelopedintheJurassicYananformation9to7period,whilethe10periodwas

5、thebraidedriverdeposits.Basedonthestudyofthelawofenrichmentofoilandgas,threetypesofreservoir-formingmodelshavebeenextracted:“Plotformationontheslopeoftherivervalley,accumulationofancienthighlandsneartheriver,andaccumulationofsandstoneontheinterglacialhills”.Thematch

6、ingofthestructureofthenasalupliftandthechannelsandformedagoodreservoirwithaflat"beadlike"distributionandformedatenmilliontonJurassicreservoirgroup.Combinedwiththeexplorationanddevelopmentpractice,toexploresuitableforZhenyuanarea"shallowreservoirbuildingproductiontec

7、hnologysystem,itcanboosttheoilproductionandproduction.Keywords：JurassicYananformation，Palaeogomorphicgeomorphology，Accumulationlawofoilreservoir目录第一章前言...................................................................................................................

8、.......11.1选题依据及意义..........................................................................................................11.2国内外研究现状...