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《新構(gòu)造運(yùn)動(dòng)對(duì)東濮凹陷北部古近系烴源巖生烴的影響及其對(duì)淺層油氣成藏的意義》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、學(xué)兔兔www.xuetutu.com磊沾專天熱氣比彥第31卷第3期0IL&GASGEOLOGY2010年6月文章編號(hào):0253—9985(2010)03—0386—07新構(gòu)造運(yùn)動(dòng)對(duì)東濮凹陷北部古近系烴源巖生烴的影響及其對(duì)淺層油氣成藏的意義--44’’’。汜昌育”王震亮”’,,李萍1.西北大學(xué)地質(zhì)學(xué)系710069.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;(,陜西西安;23.中海石油研究中心,北京100027)摘要:古近紀(jì)以來(lái),東濮凹陷在東營(yíng)組沉積末期和明化鎮(zhèn)組沉積晚期經(jīng)歷了兩期構(gòu)造運(yùn)動(dòng),構(gòu)造運(yùn)動(dòng)對(duì)深層烴源巖的生烴作用和淺層油氣成藏均具有重要的影響。在埋藏史的恢復(fù)和前人
2、熱演化史研究的基礎(chǔ)上,恢復(fù)了古近紀(jì)以來(lái)沙河街組三段烴源巖的生烴史,探討了構(gòu)造運(yùn)動(dòng)對(duì)沙河街組三段烴源巖生烴的影響,并分析了這種影響對(duì)淺層油氣成藏的意義。研究認(rèn)為,東營(yíng)運(yùn)動(dòng)強(qiáng)度較大,抑制或延緩了深層烴源巖的生烴進(jìn)程,造成了烴源巖晚期大規(guī)模生烴;同時(shí),東營(yíng)運(yùn)動(dòng)保存了深部烴源巖的生烴潛力,為后期再度埋深的二次生烴及明化鎮(zhèn)組沉積末期淺層油氣藏的形成奠定了物質(zhì)基礎(chǔ)。關(guān)鍵詞:烴源巖;二次生烴;生烴史;油氣成藏;新構(gòu)造運(yùn)動(dòng);東濮凹陷中圖分類號(hào):TEl22.1文獻(xiàn)標(biāo)識(shí)碼:AInfluenceofNeotectonicsonhydrocarbongenerationinthePaleogenesour
3、cerocksofthenorthernDongpuDepressionanditsimplicationsfortheformingofoil/gaspoolsinshallowstrata’’。’。,_,’FanChangyu.WangZhenliangandLiPing’C1.DeartmentoGeologyNorthwestUniversity,Xian,Shaanxi710069,China;2.StateKeyLaboratoryofontinental(pf,’B00026Dynamics,Xian,Shaanxi710069,China;3.ChinaNation
4、alOffshoreOilCompanyResearchCenter,eijing1,China)Abstract:SincethePaleogene,theDongpudepressionhasexperiencedtwostagesoftectonicmovements,attheendofsedimentationoftheDongyingFormationandinthelateperiodofsedimentationoftheMinghuazhenFormationThesetectonicmovementsputgreatinfluenceonhydrocarbone
5、nerationofthedee—buriedsourcemeksrespectively.gpandtheformingofoil/gaspoolsinshallowstrata.OnthebasisofburialhistoryreconstructionandpreviousstudiesonthermalevolutionocarbonenerationhistorofsourcerocksinthethirdmemberoftheShahe—.wereconstructthehydrgyiieFormationsincePaleogene,discusstheinflue
6、nceoftectonicmovementsonhydrocarbongenerationofsourcerocksinthethirdmemberoftheShahejieFormationandanalyzeitsimplicationsfortheformingofoil/gaspoolsinshallowstrata.Accordingtotheresults,itisbelievedthat(i)thegreatstrengthoftheDongyingMovementrestrainedanddelayedhydrocarbongenerationofthedeep—b
7、uriedsourcerocks.whichledtothemassivehydrocarbongenerationaftertheDongyingMovement;(ii)theDongyingMovementpreservedthehydrocarbongenerationpotentialofthedeep-buriedsourcerocksoundationsforsecondarrocarbonenerationwhenthesourcerockswere,