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1、第36卷第5期石油霧劈沾屆Vo1.36.No.52014年9月PETRoLEUMGEoLoGY&EXPERIMENTSep.,2014文章編號(hào):1001-6112(2014)05-0523-09doi:10.11781/sysydz201405523從揚(yáng)子地區(qū)海相盆地演化改造與成藏淺析南黃海勘探方向徐旭輝,周小進(jìn),彭金寧(中國石化石油勘探開發(fā)研究院無錫石油地質(zhì)研究所,江蘇無錫214126)摘要:南黃海盆地位處下?lián)P子地塊東延部位.發(fā)育巨厚的海相中、古生界地層。通過研究揚(yáng)子地區(qū)海相中、古生界的盆地原型演
2、化及其主要烴源巖區(qū)域發(fā)育特征,指出南黃海地區(qū)海相中、古生界應(yīng)發(fā)育有類似揚(yáng)子地區(qū)的£。、03-S。、Pl、P2等4套主要烴源巖,尤其要重視在揚(yáng)子臺(tái)內(nèi)廣泛發(fā)育的后3套區(qū)域烴源巖。同時(shí),通過對(duì)揚(yáng)子地區(qū)中新生代歷次構(gòu)造變格對(duì)海相中、古生界的改造特征及其主要油氣成藏類型,以及南黃海盆地的構(gòu)造特點(diǎn)等分析,認(rèn)為南黃海盆地中部隆起一南部坳陷區(qū)是勘探海相中、古生界原生油氣藏的有利區(qū)。該區(qū)海相中、古生界烴源基礎(chǔ)好、實(shí)體保存完整、埋藏相對(duì)淺.更重要的是構(gòu)造相對(duì)穩(wěn)定、后期變形弱,可能發(fā)育有類似蘇北黃橋地區(qū)的海相原生殘留型油
3、氣藏。盆地北部坳陷因緊靠蘇魯造山帶,海相中、古生界遭受了強(qiáng)烈變形甚至變位改造,在晚期斷陷疊加區(qū)有可能形成類似蘇南句容地區(qū)的重建型油氣藏。而勿南沙隆起因長期處于中新生代強(qiáng)烈褶皺隆起帶.海相中、古生界應(yīng)以發(fā)育原生破壞型古油藏為主。關(guān)鍵詞:海相中、古生界;盆地原型;改造與成藏;揚(yáng)子地區(qū);南黃海盆地中圖分類號(hào):TEl22.1文獻(xiàn)標(biāo)識(shí)碼:AExplorationtargetsinsouthernYellowSeathroughanalysisoftectono—depositionalevolutionand
4、hydrocarbonaccumulationofmarinebasininYangtzeareaXuXuhui,ZhouXiaojin,PengJinning(WuxiResearchInstituteofPetroleumGeology,SINOPEC,Wuxi,Jiangsu214126,China)Abstract:TheSouthernYellowSeaBasinlocatesintheeasternextensionregi0noftheYangtzearea,wherema.fineM
5、esozoic—Paleozoicstratawithgreatthicknessdeveloped.Inordertoinvestigatethepetroleumgeologiccondi—tionsandexplorationdirectionofthesemarineMesozoic—Paleozoicstrata,andbasedontheevolutionofmarineMesozoic—Paleozoicbasinprototypeandtheregionaldevelopmentch
6、aracteristicsofmainsourcerocks,thepaperindicatesthatfourmainsourcerocksdevelopedinthemariBeMesozoic—PaleozoicstrataintheSouthernYellowSeaBasin,similarwithfoursourcerocks(£1,03-S1,P1,P2)intheYangtzearea.Thelaterthreemainsourcerockswhichwerewidelydevelop
7、edintheinnerYangtzeareaneedtobepaidmoreattention.Meanwhile,accordingtotheanalysisofthereformationcharacteristicsofallpreviousCenozoic——MesozoictectonicdeclensionstothemarineMesozoic——PaleozoicstratainYangtzeareaaswellasthemainpetroleumformationtypesint
8、heYangtzeareaandthestrncturalfeaturesoftheSouthernYellowSeaBasin.itissuggestedthatthemiddleupliftandthesouthernde.pressionareaarethefavorableexplorationareasofmarineMesozoic—Paleozoieprimarypetroleumreservoirs.emarineMesozoic—Paleozoics