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ID:51417102
大小:1.78 MB
页数:9页
时间:2020-03-23
《基于成岩和测井参数定量评价的成岩相划分——以鄂尔多斯盆地薛岔地区长6储集层为例.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、矿物岩石地球化学通报·研究成果·BulletinofMineralogy,PetrologyandGeochemistryVo1.34No.6,November,2015基于成岩和测井参数定量评价的成岩相划分以鄂尔多斯盆地薛岔地区长6储集层为例高辉,苏婕,孙卫2,李天太,杨玲1.西安石油大学石油工程学院,西安710065;2.西北大学地质学系,西安710069摘要:为探讨成岩相的定量划分与识别方法,利用铸体薄片、扫描电镜、X射线衍射、压汞和测井资料,对鄂尔多斯盆地薛岔地区长6储集层进行了成岩作用强度参数定量评价和成岩相测井识别。结果表明,长6储集层经历了中等一强压实作用、弱.中等胶
2、结作用、弱一中等溶解作用。根据成岩作用强度、胶结物类型、孔隙类型及其发育程度,划分出5种成岩相,不同成岩相的自然伽马、声波时差和电阻率测井响应差异大。成岩相与沉积微相表现出良好的对应关系,分布于水下分流河道砂体的中等压实绿泥石胶结一粒间孔相,孔隙发育程度高,物性好,排驱压力低、大孔喉含量高,是最有利的成岩相;中等压实伊利石胶结一溶蚀孔相和中等压实硅质胶结相次之。关键词:定量划分;成岩相;测井识别;成岩作用;超低渗透砂岩中图分类号:P588.2文章编号:1007—2802(2015)06—1238—09doi:10.3969/j.issn.10072802.2015.06.016Cl
3、assificationofDiageneticFaciesBasedonQuantitativeEvaluationofDiagenesisandLoggingParameters-ACaseStudyoftheChang6ReservoiroftheXuechaArea,OrdosBasinGAOHui,SUJie,SUNWei,LITian.tai,YANGLing1.CollegeofPetroleumEngineering,Xi'anShiyouUniversity,Xi'an710065,China;2.DepartmentofGeology,NorthwestUniv
4、ersity,Xi'an710069,ChinaAbstract:Inordertoprobethequantitativeclassificationandidentificationmethodofdiageneticfacies,thequantitativeevaluationofdiagenesisintensityparametersandtheloggingidentificationofdiageneticfaciesoftheChang6ReservoirintheXuechaarea,OrdosBasinhavebeencarriedoutinthispaper
5、byusingcastingsection,SEM,XRD,mercuryinjectionandloggingdata.ResultsshowthatthediageneticfaciesintheChang6Reservoirhadexperiencedthemedium.strongcom-paction,weak-mediumcementation,andweak—mediumdissolution.Fivediageneticfacieshavebeenclassifiedbasedontheirdiageneticintensity,cementtype,andpore
6、typeanddevelopmentdegree.Thereareobviouslydifferentresponsesonnaturalgamma,acoustictimeandresistivityloggingamongvariousdiageneticfaciesinthearea.Thereisagoodcorrelationbetweendiageneticfaciesandsedimentarymicrofacies.Themoderatelycompacted,chloritecementedandintergranularporeddiageneticfacies
7、,whichisdistributedinsandysedimentsbeneaththeriverbed,isthemostfavorablediageneticfa.ciesbecauseofthehighdevelopmentdegreeofporosity,goodphysicalpropertieslowexpulsionpressure,highcontentof,bigporethroat.Themoderatelycompacted,illitecem
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