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《物源與沉積相對(duì)鄂爾多斯盆地北部上古生界天然氣優(yōu)質(zhì)儲(chǔ)層的控制.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29卷第6期地質(zhì)通報(bào)Vo1.29.No.62010年6月GEoLoGICALBULLETINoFCHINAJun.,2010物源與沉積相對(duì)鄂爾多斯盆地北部上古生界天然氣優(yōu)質(zhì)儲(chǔ)層的控制羅靜蘭,魏新善27姚涇利2劉新社2劉小洪L(zhǎng)UOJing—lan,WEIKin—shan。,YAOJing—li。,LIUXin—she,LIUXiao—hong31.西北大學(xué)/大陸動(dòng)力學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室,陜西西安710069;2.中國(guó)石油天然氣股份有限公司長(zhǎng)慶油田分公司勘探開(kāi)發(fā)研究院,陜西西安710021;3.西南石油大學(xué)資源與環(huán)境學(xué)院,四川成都6105
2、001.StateKeyLaboratoryofContinentdDynamies/NorthwestUniversity,Xi'an710069,ShaanxiChino,"2.ResearchInstituteofExplorationandDevelopment,ChangqingOilField,Petroehina,XUan710021,Shaanxi,China;3.CollegeofResourcesandEnvironment,SouthwestPetroleumUniversityofChina,Chengdu6
3、10500,Sichuan,China摘要:利用LA—ICP—MS鋯石微區(qū)原位U-Pb定年方法.建立了鄂爾多斯盆地北部上古生界下石盒子組盒8段與山西組山1段砂巖碎屑鋯石的年齡譜系.結(jié)合砂巖重礦物分析、顯微鏡下碎屑礦物的定量統(tǒng)計(jì)與陰極發(fā)光鑒定,通過(guò)與源區(qū)地層同位素年代學(xué)的對(duì)比.分析了研究區(qū)上古生界天然氣儲(chǔ)層的物源區(qū)和母巖的時(shí)代、性質(zhì)。在大量巖心觀察與沉積相研究的基礎(chǔ)上,通過(guò)鏡下對(duì)砂巖薄片中碎屑礦物、填隙物、孔隙類(lèi)型及其含量的觀察與定量統(tǒng)計(jì),結(jié)合砂巖圖像粒度、孔隙度、滲透率、毛細(xì)管壓力測(cè)試.研究了各砂巖類(lèi)型及其骨架礦物與膠結(jié)物的特征、孔
4、隙類(lèi)型、儲(chǔ)集物性及平面分布規(guī)律。討論了源區(qū)母巖的性質(zhì)、沉積相及空間展布、沉積作用與水動(dòng)力條件等對(duì)形成天然氣優(yōu)質(zhì)儲(chǔ)層及儲(chǔ)層儲(chǔ)集性能演化的影響。關(guān)鍵詞:LA—ICP—MS碎屑鋯石微區(qū)U—Pb定年:源區(qū)與母巖的性質(zhì);源控與相控;優(yōu)質(zhì)儲(chǔ)層;鄂爾多斯盆地中圖分類(lèi)號(hào):P534.4;P618.130.21文獻(xiàn)標(biāo)志碼:A文章編號(hào):1671—2552(2010)06—0811—10LuoJL,WeiXS,YaoJL,LiuXS,LiuXH.ProvenanceanddepositionalfaciescontrollingontheUpperPale
5、ozoicexcel-lentnaturalgas-reservoirinnorthernOrdosbasin,China.GeologicalBulletinofChina,2010,29(6):811-820Abstract:Theagespectrumofdettit~zirconsintheHe8andShan1sandstonesoftheUpperPaleozoicfromOrdosbasiniscon—stmcted,andprovenanceandparentrocksfortheUpperPaleozoicnatu
6、r~gas—reservoirinOrdosbasinisstudiedinthefirsttime,us-ingLA—ICP—MStechniquesofinsituU—Pbdating.a(chǎn)ccompaniedwi血heavyanddetritdmineralanalysisanddetritalmineralcathodoluminescencemeasurement,aswelascomparativestudyofisotopicchronologyoftheparentrocksinprovenance.Typesofsa
7、ndstones,detritalnfineralsandcements,poretypesandreservoirqualityofthediferentthreesandstonetypesandtheirhorizontaldistributioncharacteristicsareelucidatedinthisstudy,baseduponrobustcoreobservationanddescriptionanddepositionalfaciesinves—tigation,identificationandquant
8、itativestatisticsfromsandstonethinsectionsundermicroscope,analysisofgrainsize,porosityandper-meability,andcapilarypre