川西坳陷新场气田须四段沉积相分析

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1、成都理工大学硕士学位论文关键词：新场气田须四段沉积模式沉积相古地理演化ⅡAbstractWesternSichuanDepressionResearchonsedimentaryfaciesofthe4thsectionofXujiaheFormationintheXinchanggasfield，westernSichuanBasinIntroductionoftheauthor：Ligang，male，wasbominNovember,1983whosetutorWasProfessorHoumingcai．HegraduatedfromChengduUnivers

2、ityofTechnologyinSedimentationmajorandWasgrantedtheMasterDegreeinJune，2011．WesternSichuanDepressionResearchonsedimentaryfaciesofthe4thsectionofXujiaheFormationintheXinchanggasfield，westernSichuanBasinThispaperusethe4thsectionofXujiaheFormationintheXinchanggasfield，westernSichuanBasinasth

3、etargetinthisstudy．Thewaysareusingsedimentology,petroleumgeologyandgeophysicstheory,combinedwithregionalgeologicaldata,cores，thinsectiondescription，andloggingdataandseismicdataofthestudyarea．Thesedimentaryfaciesofthetargetareawerestudiedindetail，andgetfollowingaspectsoftheresultsandunder

4、standings：1．Themainrocks(bytherockbasename)typesofthe4thsectionofXujiaheFormationofthestudyareacontainlithicsandstone，lithicquartzsandstoneandfeldspathic，lithicsandstone，andquartzsandstone，whichtakesonlyasmallpart．Themainfeatureofsandstoneframeworkgraincompositionofthe4thsectionofXujiahe

5、FormationintheXinchanggasfieldsandstoneisrichinLithieandpoorinfeldspar．Thegrainsizeofsandstonearemainlymedium，fine，medium-fineandfine—medium，andcoarse，medium-coarsetakesmallpart．Theparticlesseparationweregood-medium，andmeirroundnessweremedium-poor,assub-angularandsub—rounded．Themaincemen

6、tationtypeswereporetype，pressureresultantandpore-pressureresultant．Themainsandparticlescontactwayswereline-bump，followedbythelinecontactways．Littlepoint-lineandbump-suturelinecontactwayswerefounded．2．Throughtheresearchofsedimentaryfaciesof4thsectionofXujiaheFormationintheXinchanggasfield

7、,usinggeologicaldata,cores，thinsection，lo喀gingdataandseismicdata,foundethatthelowsectionofXujiaheformationdevelopedfandeltaplan，themiddleandupsectiondevelopeddelta．Thefandeltafrontcandividedintofandeltaplan,fandeltafrontandPro．．fan．．delta,andthedeltaCalldividedintodeltapl