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1、中圖分類號(hào)：TE122單位代碼：11414學(xué)號(hào)：2014210604題目鄂爾多斯盆地延長油田致密油儲(chǔ)層精細(xì)評(píng)價(jià)學(xué)科專業(yè)地質(zhì)工程研究方向油氣勘探地質(zhì)工程碩士生朱蓄指導(dǎo)教師羅群副教授現(xiàn)場導(dǎo)師楊昌俊高級(jí)工程師二○一七年五月1摘要摘要鄂爾多斯盆地區(qū)油氣儲(chǔ)量十分豐富，現(xiàn)有的勘探數(shù)據(jù)表明，該地區(qū)具有特殊的地質(zhì)條件，對(duì)致密油成藏以及富集形成具有十分有利的條件。延長油田致密油勘探開發(fā)尚處于初期階段并且日益受到重視，但是在致密油儲(chǔ)層特征方面的研究還相對(duì)薄弱。致密油儲(chǔ)層研究的目的層主要是長6、長7、長8段儲(chǔ)層，具有低孔隙度低滲透率的特征。綜合巖性、
2、巖性組合、測井曲線特征等因素對(duì)延長西部探區(qū)目的層段進(jìn)行沉積微相劃分。沉積相研究表明：主要發(fā)育三角洲前緣亞相、濱淺湖亞相、半深湖亞相和深湖亞相的沉積相類型。該地區(qū)具有有效厚度的儲(chǔ)集砂體，包括水下分流河道砂體、前緣席狀砂、灘壩、濁積砂體等儲(chǔ)集體。采用包括巖心分析、鑄體薄片、掃描電鏡、壓汞實(shí)驗(yàn)等實(shí)驗(yàn)分析手段研究儲(chǔ)層宏觀巖石學(xué)特征及微觀物性特征。結(jié)合現(xiàn)代計(jì)算機(jī)定量計(jì)算和數(shù)值模擬，包括Surfer、Grapher、雙狐等專業(yè)技術(shù)軟件勾繪等值線圖、數(shù)字模擬平面展布圖等，建立巖性、物性（孔、滲）、孔隙類型和孔隙結(jié)構(gòu)等參數(shù)對(duì)目的層段進(jìn)行分級(jí)并且
3、評(píng)價(jià)，得到認(rèn)識(shí)：長6段儲(chǔ)層總體最好，長8段儲(chǔ)層次之，長7儲(chǔ)層最差。關(guān)鍵詞：延長油田；致密儲(chǔ)層；精細(xì)評(píng)價(jià)；物性特征2ABSTRACTFineEvaluationofDenseOilReservoirinYanchangOrdosBasinABSTRACTTheOrdosBasinhasabundantoilandgasreserve,andtheexistingexplorationdatashowsthatthisareahasspecialgeologicalcondition,whichhasveryfavorablecon
4、ditionfortheformationofdenseoilandenrichment.Thoughthedevelopmentofdenseoilreservoirsisstillintheearlystagenowadays,itisveryimportanttostudythedevelopment,andmoreandmoreattentionbepaid.ThetargetlayersofthestudyofdenseoilreservoirsaremainlyChang6,Chang7,Chang8,whichha
5、velowporosityandlowpermeability.Comprehensivelithology,lithologyassemblage,loggingcurveandotherfactorstoextendthesedimentarymicrofaciesinthewesternexplorationarea.Sedimentaryfaciesstudieshaveshownthatthemaindevelopmentalsedimentaryfaciesaredeltafrontsubfacies,shoresh
6、allowlakesubfacies,semi-deeplakesubfaciesanddeeplakesubfacies.Thesandbodyintheareahasaneffectivethickness,includingunderwaterdistributarychannelsandbody,frontedgesand,beachdam,turbiditesandbodyandotherreservoirs.Studyingbymanymeans,concludingcoreanalysis,castsheet,sc
7、anningelectronmicroscopyandmercuryintrusionexperiments,macroscopicpetrologicalcharacteristicsandmicro-physicalpropertiesofthereservoircanbeknowned.Combinedwithmoderncomputerquantitativecalculationandnumericalsimulation,includingSurfer,Grapher,DoubleFoxandotherprofess
8、ionalandtechnicalsoftwares,wecandrawcontourmapsanddigitalsimulationplanemaps,andtheestablishmentoflithology,physicalproperties(poro
