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1、賈小樂,阿壹,童曉七。(1中國地質(zhì)大學(xué)海相儲層演化與油氣富集機(jī)理教育部重點實驗室,北京1000832中國石油集團(tuán)海外勘探開發(fā)公司,北京100034)摘要:波斯灣盆地新生界主要有5套油氣成藏組合,其中阿斯馬里組加奇薩蘭組成藏組合是最重要的油氣成藏組合之一。通過對該成藏組合古地理演化、烴源巖、儲集層、蓋層、成藏過程和模式的分析認(rèn)為,沉積于低能閉塞環(huán)境的中自堊統(tǒng)卡茲杜米組烴源巖,在上新世早期達(dá)到排烴高峰,生成的油氣通過相關(guān)的裂縫系統(tǒng)垂向運移到漸新統(tǒng)下中新統(tǒng)阿斯馬里組石灰?guī)r裂隙型儲集層中;中新統(tǒng)加奇薩蘭組為漸新統(tǒng)下中新
2、統(tǒng)阿斯馬里組提供有效的區(qū)域蓋層;油氣在側(cè)向擠壓形成的構(gòu)造圈閉中聚集成藏。優(yōu)質(zhì)的烴源巖、儲集物性良好的儲集層、溝通烴源巖與儲集層的裂縫、有效的區(qū)域和局部蓋層、油氣生成期與構(gòu)造活動、裂縫及圈閉形成期的良好匹配等是油氣富集的主控因素。關(guān)鍵詞:波斯灣盆地;新生界;阿斯馬里組;儲集層;加奇薩蘭組;蒸發(fā)巖;成藏組合文章編號:10013873(2014)O1[)11806中圖分類號:TEl1241文獻(xiàn)標(biāo)識碼:AGeologicalCharacteristicsandHydrocarbonAccumulationModelfo
3、rCenozoicPlayinPersianGulfBasinJIAXiaole,HEDengfa,TONGXiaoguang(1MOEKeyLaboratoryofMal~neReservoirEvolution&HydrocarbonAccumulation,ChinaUniversityofGeoseienees,Beijing100083,China;2ChinaNationalOilandGasExplorationandDevelopmentCorporation,CNPC,Beijing10003
4、4,China)Abstract:TherearefivehydrocarbonaccumulationplaysinCenozoicinPersianGulfbasin,ofwhichtheAsmarl—GaehsaranplayisthemostimportantoneThepaleogeogxaphyevolution,hydroearbonsourcerocks,reservoirrocks,caprocksandhydrocarbonaccumulationpro—tessarestudied,sho
5、wingthattheMiddleCretaceoushydroearbonsourcerockofKazhdumiformationwasdepositedinlowenergyandeux—initenvironment,andreachedhydrocarbongenerating/expulsionpeakinEarlyPlioceneOilandgasmigratedverticallyalong~aeturesandfinallyaeeumulatedinOligoeene—LowerMiocene
6、AsmarlfracturedlimestonereservoirTheMioceneGachsaranformationprovidedanefectiveregionalsealfortheOligoeene—LowerMioceneAsmarlreservoirTheoilandgasaccumulationoccultedinstrueturaltrapformedbylateralcompressionThehighqualitysourcerocks,favorablereservoirrocks,
7、~aetureseonneetingthesourcerockswithreservoirs,efee—tivereglonal/loealseals,andthegoodmatehingbetweenhydrocarbongeneratingpeakandtectonicactivity,fracture,trapformingtimearethekeyofhydrocarbonem'iehmentinAsmari—GaehsaranplayKeyWords:PersianGulfbasin;Cenozoic
8、;Asmariformation;reservoir;Gaehsaranformation;evaporiterock;hvdroearbonaccumulationassemblage(play)波斯灣盆地位于阿拉伯板塊內(nèi),總面積305x1121x10t,天然氣最終可采儲量為7239x10m,凝析10km,油氣資源十分豐富。波斯灣盆地的地質(zhì)情況油最終可采儲量為682lxl04t;⑧基