资源描述:
《准噶尔盆地下二叠统风城组致密碎屑岩储层发育特征》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2015年9月,第21卷,第3期,461-470页高校地质学报September2015,Vol.21,No.3,pp.461-470GeologicalJournalofChinaUniversitiesDOI:10.16108/j.issn1006-7493.2015061准噶尔盆地下二叠统风城组致密碎屑岩储层发育特征1,21,2341,2*1,2朱世发,刘欣,马勋,马爱钰,朱筱敏,贾业1.中国石油大学(北京)油气资源与探测国家重点实验室,北京102249;2.中国石油大学(北京)地球科学学院,北京102249;3.中石化中原油田分公司采油五厂地质研究所,濮阳457001
2、;4.中国石油新疆油田分公司勘探开发研究院,克拉玛依834000摘要:准噶尔盆地西北缘乌尔禾—夏子街地区下二叠统风城组发育了典型的致密碎屑岩储层。综合地质和地球物理资料,研究了该区储层发育特征。结果表明风城组沉积早期和晚期扇体规模相对较大,零星分布有小规模的滑塌浊积扇和滩坝砂体。风城组沉积中期,湖盆水体扩张,扇体不发育。滩坝砂岩物性好于扇三角洲前缘砂体,好于浊积扇。高成熟度的砂砾岩为优质储层(岩相)。岩石组分中的火山物质影响储层的成岩演化,进而影响储层质量。塑性的凝灰岩屑降低抗压实能力;凝灰岩屑在埋藏过程中水解、蚀变,析出不同自生矿物,破坏孔隙;长石、岩屑、基质和各种自生矿物
3、溶蚀,一定程度上增加孔隙。风城组碎屑岩储层整体为低孔、低渗的致密砂岩储层,“甜点”发育受多因素复合控制,包括沉积相带、岩石组分、粒度、成熟度、溶蚀作用的发育程度等。关键词:致密储层;深部储层;碎屑岩;风城组;准噶尔盆地中图分类号:P618.13文献标识码:A文章编号: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_____________________