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《鄂爾多斯盆地南梁西區(qū)長(zhǎng)6油層組砂巖低孔超低滲儲(chǔ)層特征及主控因素.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、第32卷第9期地質(zhì)通報(bào)Vo1.32.NO.92013年9月GEoLoGICALBULLETINOFCHINASep.,2013鄂爾多斯盆地南梁西區(qū)長(zhǎng)6油層組砂巖低孔超低滲儲(chǔ)層特征及主控因素馬瑤李文厚,歐陽(yáng)征健,一,張東陽(yáng)4孟鵠MAYao,LIWen—hou,OUYANGZheng-jian,ZHANGDong—yang,MENGHu1.大陸動(dòng)力學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室(西北大學(xué))/西北大學(xué)地質(zhì)學(xué)系.陜西西安710069:2.成都理工大學(xué)沉積地質(zhì)研究院.四川成都610059:3.中國(guó)石油長(zhǎng)慶油田公司勘探開(kāi)發(fā)研究院.陜西西安710018:4.長(zhǎng)慶油田公司勘探部.陜西
2、西安710021:5.陜西省煤田地質(zhì)局物探測(cè)量隊(duì).陜西西安7100641.StateKeyLaboratoryofContinentalDynamics/DepartmentofGeology,NorthwestUniversity,Xi'an710069,Shaanxi,China,"2.InstituteofSedimentaryGeology,ChengduUniversit?"ofTechnology,Chengdu610059,Sichuan,China;3.ResearchInstituteofExplorationandDevelopmen
3、t,PetroChinaChangqingOieldCompany,Xi"an710018,Shaanxi,China,4.ChangqingOilfieldBranchCompanyofCNPC,Xi"an710021,Shaanxi,China;5.GeophysicalProspectingandSurveyingTeam,CoalGeologicalBureau,Xi"an710064,Shaanxi,China摘要:南梁西區(qū)位于鄂爾多斯盆地陜北斜坡的西南部長(zhǎng)6油層組作為其主要的勘探目標(biāo)層位,在研究區(qū)東北部發(fā)育三角洲前緣亞相、南部發(fā)育深湖濁流亞相
4、。砂巖儲(chǔ)層主要由長(zhǎng)石砂巖及巖屑長(zhǎng)石砂巖組成。研究區(qū)砂巖中膠結(jié)物類型有方解石、伊利石、綠泥石和硅質(zhì)膠結(jié)物,使得砂巖孔隙物性降低。通過(guò)對(duì)儲(chǔ)層孔滲參數(shù)的研究,得出長(zhǎng)6油層組主要為低孔超低滲儲(chǔ)層。根據(jù)毛細(xì)管壓力曲線的形態(tài)認(rèn)為,研究區(qū)目的層的孔喉結(jié)構(gòu)為Ⅱ類,孔喉分選中等偏差,并提出成巖作用是影響其儲(chǔ)集性能的主要因素。關(guān)鍵詞:沉積特征;孔隙類型;成巖作用;長(zhǎng)6油層組;南梁西區(qū);鄂爾多斯盆地中圖分類號(hào):TE122.221文獻(xiàn)標(biāo)志碼:A文章編號(hào):1671—2552(2013)09~1471—06MaY,LiWH,OuyangZJ,ZhangDY,MengH.Reserv
5、oircharacteristicsandmaincontrolfactorsofChang6oil-bear-ingformationinWesternNanliangAreaofOrdosBasin.GeologicalBulletinofChina,2013,32(9):1471-1476Abstract:WesternNaMiangareaislocatedinsouthwesternShanbeislopeoftheOrdosBasin,andChang6oil—bearingformationisitsmainexplorationtarge
6、t.DeltafrontsubfaciesisdevelopedinthenortheastanddeeplakefaciesOCCLIrsinthesouthofthestudyarea.Thesandstonereservoiriscomposedofarkosesandstoneandlithicarkosesandstone.Themaintypesofcementsincludecalcitece—ments,illitecements,chloritecementsandsiliceouscements.Allofthesecementsre
7、ducethereservoirqualityofthesandstone.TheauthorshavereachedtheconclusionthatChang6oil—bearingformationisalowporosityandultra一一lowpermeabilityreservoir.a(chǎn)sevi—dencedbystudyingthepropertyparameterssuchasporosityandpermeability.AccordingtOcapillarypressurecurves,theporethroatstructur
8、eisoftype1I.Diagenesisisthemainfactorinf