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1、2015年9月,第21卷,第3期,461-470頁高校地質(zhì)學(xué)報September2015,Vol.21,No.3,pp.461-470GeologicalJournalofChinaUniversitiesDOI:10.16108/j.issn1006-7493.2015061準(zhǔn)噶爾盆地下二疊統(tǒng)風(fēng)城組致密碎屑巖儲層發(fā)育特征1,21,2341,2*1,2朱世發(fā),劉欣,馬勛,馬愛鈺,朱筱敏,賈業(yè)1.中國石油大學(xué)(北京)油氣資源與探測國家重點實驗室,北京102249;2.中國石油大學(xué)(北京)地球科學(xué)學(xué)院,北京102249;3.中石化中原油田分公司采油五廠地質(zhì)研究所,濮陽457001
2、;4.中國石油新疆油田分公司勘探開發(fā)研究院,克拉瑪依834000摘要:準(zhǔn)噶爾盆地西北緣烏爾禾—夏子街地區(qū)下二疊統(tǒng)風(fēng)城組發(fā)育了典型的致密碎屑巖儲層。綜合地質(zhì)和地球物理資料,研究了該區(qū)儲層發(fā)育特征。結(jié)果表明風(fēng)城組沉積早期和晚期扇體規(guī)模相對較大,零星分布有小規(guī)模的滑塌濁積扇和灘壩砂體。風(fēng)城組沉積中期,湖盆水體擴(kuò)張,扇體不發(fā)育。灘壩砂巖物性好于扇三角洲前緣砂體,好于濁積扇。高成熟度的砂礫巖為優(yōu)質(zhì)儲層(巖相)。巖石組分中的火山物質(zhì)影響儲層的成巖演化,進(jìn)而影響儲層質(zhì)量。塑性的凝灰?guī)r屑降低抗壓實能力;凝灰?guī)r屑在埋藏過程中水解、蝕變,析出不同自生礦物,破壞孔隙;長石、巖屑、基質(zhì)和各種自生礦物
3、溶蝕,一定程度上增加孔隙。風(fēng)城組碎屑巖儲層整體為低孔、低滲的致密砂巖儲層,“甜點”發(fā)育受多因素復(fù)合控制,包括沉積相帶、巖石組分、粒度、成熟度、溶蝕作用的發(fā)育程度等。關(guān)鍵詞:致密儲層;深部儲層;碎屑巖;風(fēng)城組;準(zhǔn)噶爾盆地中圖分類號:P618.13文獻(xiàn)標(biāo)識碼:A文章編號:1006-7493(2015)03-0461-10TheDevelopmentCharacteristicsofTightClasticReservoirsintheLowerPermianFengchengFormationinWu-XiaAreaoftheJuggarBasin1,21,2341,2*1,2Z
4、HUShifa,LIUXin,MAXun,MAAiyu,ZHUXiaomin,JIAYe1.StateKeyLaboratoryofPetroleumResourceandProspecting,ChinaUniversityofPetroleum,Beijing102249,China;2.CollegeofGeosciences,ChinaUniversityofPetroleum,Beijing102249,China;3.InstitudeofGeologyoftheFifthOilProductionPlant,CentralPlainsOilfieldSubcom
5、panyofSinopec,Puyang457001,China;4.ResearchInstituteofPetroleumExplorationandDevelopment,XinjiangOilfieldSubcompany,CNPC,Karamay834000,ChinaAbstract:TypicaltightclasticreservoirsweredevelopedintheLowerPermianFengchengFormationinWu-XiaareainthenorthwesternmarginoftheJunggarBasin.Basedonthege
6、ologicalandgeophysicaldata,thereservoirs′characteristicshavebeenstudied.TheresultsshowthatthefansarerelativelylargeduringtheearlyandlateperiodsoftheFengchengFormation,withsmall-scaleslumpturbiditefansandshoal-barsandbodiessporadicallydistributed.Thewaterbodiesexpandedandthefanbodieswerenotd
7、evelopedinthemiddlestageoftheFengchengFormation.Thephysicalpropertiesofshoal-barsandstonesarebetterthanthoseofthesandstonesoffandeltafrontandturbiditefans.Gluteniteswithhighmaturityarehigh-qualityreservoirrocks.Thevolcanicmaterialsin_____________________