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1、第43卷第6期吉林大學(xué)學(xué)報(bào)(地球科學(xué)版)VoL43NO.62013年11月JournalofJilinUniversity(EarthScienceEdition)NOV.2013塔里木盆地順9井區(qū)柯坪塔格組下段沉積微相與儲(chǔ)層展布孫乃泉,云露。,蒲仁海,楊素舉。1.西北大學(xué)大陸動(dòng)力學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室/地質(zhì)學(xué)系,西安7100692.長(zhǎng)安大學(xué)地質(zhì)工程與測(cè)繪學(xué)院,西安7100543.中石化西北油田分公司研究院,烏魯木齊830011摘要:近期在塔里木盆地順托果勒地區(qū)順9井發(fā)現(xiàn)了下志留統(tǒng)柯坪塔格組下段原生油藏。通過(guò)巖心、測(cè)井和三維地震綜合解釋認(rèn)為:柯
2、坪塔格組下段沉積期間,順托果勒地區(qū)經(jīng)歷了半深海一淺海一三角洲沉積過(guò)程,油層砂巖屬于柯坪塔格組下段上部的由北向南的三角洲河口壩與分流河道沉積。南部附近的塔中隆起雖然距順9井較近,但并未提供陸源碎屑物質(zhì)。由于后期構(gòu)造南抬北降,所以油藏區(qū)現(xiàn)今構(gòu)造屬于北傾緩坡背景,其上局部發(fā)育低幅度構(gòu)造。圈閉類(lèi)型主要為三角洲砂體巖性圈閉,其次為低幅度構(gòu)造圈閉和巖性構(gòu)造復(fù)合圈閉。有利圈閉區(qū)位于三角洲前緣主砂體發(fā)育帶和局部構(gòu)造圈閑疊合區(qū)。關(guān)鍵詞:原生油藏;巖性一構(gòu)造圈閱;沉積體系;柯坪塔格組下段;儲(chǔ)層預(yù)測(cè)中圖分類(lèi)號(hào):P618.13文獻(xiàn)標(biāo)志碼:A文章編號(hào):1671—5
3、888(2013)06—1716~1OTheMicrofaciesandReservoirDistributionoftheLowerMemberofKepingtageFormationinShun9WellAreainTarimBasinSunNaiquan,YunLu。,PuRenhai,YangSuju。1.StateKeyLaboratoryofContinentalDn口mcs/DPp口r£m刪£ofGeology,NorthwestUniversity,xi’an710069,China2.CollegeofGeologyE
4、ngineeringandGeomatics,Chang’anUniversity,xi’an710054,China3.ResearchInstituteofNorthwestOilfieldBranch,SINOPEC,Urumqi830011,ChinaAbstract:IntheShun9wellareaanoringinaloilpoolhasbeenfoundintheLowerMemberofKepingtageFormationinShuntuoguoleregioninTarimbasin.Thesedimentarye
5、nvironmentisanalyzedthatisfrombathya1toshallowseatodelta,basedonintegratedinterpretationofcore,logandseismicdata.Thesandstonereservoirsareconsideredtobedeltafrontalchannelmouthbaranddistributarychannelsandbodiesformnorthtosouth,intheupperpartintheLowerMemberofKepingtageFo
6、rmation.TazhongupliftthatisclosertoShun9wel1areadoesnotprovideterrigenousclasticmasses.ButduringthelatedepositionofLowerMemberofKepingtageFormationtheenvironmenttransformedgraduallyintodeltaicandtidalflat.Duetothelatetectonicnorth-diptilting,thepresentstructurebackgroundo
7、foilfieldbelongstoannorthdippingslopedevelopedlocallylowamplitudestructures.Thefoundedtypesofoilpoolsaredominatedbylithologicaltrapsassociateddeltasandbodyupwardpinchout,withpartiallowamplitudestructuretrapsandlithologic—structuralcompoundtraps.Favorable收稿日期:2013—05—19基金項(xiàng)
8、目:國(guó)家科技重大專(zhuān)項(xiàng)項(xiàng)目(2008ZX05001—003);中石化西北油田分公司勘探開(kāi)發(fā)研究院協(xié)作項(xiàng)目(KY2011一S一036)作者簡(jiǎn)介:孫乃泉(1977-),男,博士研究生,主要從事沉積學(xué)