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1、學兔兔www.xuetutu.com沾專天然氣比第33卷第2期0IL＆GASGEOLOGY2012年4月文章編號：0253—9985(2012)02—0166—07蘇北盆地張家垛油田阜三段油氣富集規(guī)律焦里力(中國石化華東分公司石油勘探開發(fā)研究院，江蘇南京210011)摘要：蘇北盆地張家垛油田阜寧組三段具有良好的油氣勘探潛力，是今后中國石化華東分公司增儲上產(chǎn)的一個重要領(lǐng)域。但由于該儲層非均質(zhì)性強，油氣富集規(guī)律不清楚，嚴重制約了下一步的勘探開發(fā)。通過對烴源巖、儲層、圈閉等成藏基本地質(zhì)條件的研究，利用泥巖壓實規(guī)律進行異常壓力分析。研究結(jié)果表明：①阜寧組異常高壓為欠壓實成因，
2、與干酪根生烴無關(guān)，深層優(yōu)質(zhì)儲層與欠壓實密切相關(guān)，異常壓力高值區(qū)是優(yōu)質(zhì)儲層分布區(qū)；②異常壓力高值分布在阜三頂一阜四段，高異常壓力形成區(qū)域性封閉層，油氣主要富集于高異常壓力之下的低勢區(qū)；③高異常壓力最有利于阜三段油氣成藏，而低異常壓力區(qū)有可能在阜三段的上覆地層戴南組成藏。最終利用高壓封閉的區(qū)域性蓋層和沉積微相研究，認為阜三段向南成藏條件會變好，是下一步勘探的目標區(qū)。關(guān)鍵詞：異常壓力；欠壓實；儲層；阜三段；張家垛油田；蘇北盆地中圖分類號：TEl22．3文獻標識碼：AHydrocarbonenrichmentpatternsofthe3dmemberofFuningForma
3、tioninZhangjiaduooilfield，SubeiBasinJiaoLili(ResearchInstituteofExplorationandDevelopment，SINOPECHuadongOilfieldCompany，Nang，Jiangsu210011，China)Abstract：The3memberofFuningFormationhasagreatpotentialforoilandgasexplorationandwillbeoneofthemostimportanttargetsforreservegrowthandproductio
4、nadditionofSINOPECHuadongOilfieldCompany．However，thereservoirheterogeneityisstrongandhydrocarbonenrichmentpatternsarepoorlyunderstood，seriouslyconstrainingfutureexplorationanddevelopment．Basedonstudyofthebasicgeologicconditionsforsourcerocks，reservoirs，andtraps，abnormalpressureisanalyze
5、daccordingtotherulesofmudstonescompaction．TheabnormalpressuresofFuningFormationarecausedbyofundercompaction，insteadofhydrocarbongenerationofkerogen．Thedeephigh—qualityreservoirsarecloselyrelatedwithunderc0mpactionandthehigh—qualityreser—voirsoccurinareaswheretheabnormalpressureishigh．Th
6、ehighabnormalpressureOccursinintervalfromthetop3memberto4memberofFunningFormationandformsaregionalsea1．Hydrocarbonsmainlyaccumulateinlowpotentialareasbelowthissea1．Highabnormalpressurefavorshydrocarbonaccumulationinthe3men—berofFunningFormation，whilelowabnormalpressuremaybefavorableforh
7、ydrocarbonaccumulationintheO—verlyingDainanFormation．Basedonstudyoftheregionalhighabnormalpressuresealandsedimentarymicrofa-cies，itisbelievedthatthehydrocarbonaccumulationconditionsofthe3memberofFunningFormationarebet。tertothesouth．thusthe3membertothesouthisafavorabletargetforf
