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1、石油勘探與開發(fā)1362009年4月PETROLEUMEXPLORATIONANDDEVELOPMENTVol.36No.2文章編號(hào):100020747(2009)0220136208潛山油氣藏勘探理論與實(shí)踐———以遼河坳陷為例1111211孟衛(wèi)工,陳振巖,李湃,郭彥民,高先志,回雪峰,張亞麗(1.中國石油遼河油田公司;2.中國石油大學(xué)(北京))基金項(xiàng)目:國家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃(973)項(xiàng)目(2009CB21930X)摘要:近年來,遼河坳陷潛山油氣藏勘探不斷取得重大突破,實(shí)現(xiàn)了由尋找成藏條件相對(duì)明顯的高、中潛山向?qū)ふ衣癫馗?、更隱蔽、更復(fù)雜的低潛山和潛山內(nèi)
2、幕油氣藏的勘探轉(zhuǎn)變。從基底構(gòu)造活動(dòng)、潛山類型、巖性及儲(chǔ)集層特征、生烴系統(tǒng)、輸導(dǎo)體系等多角度探討了低潛山和潛山內(nèi)幕油氣成藏條件;同時(shí),充分考慮潛山內(nèi)幕油氣藏的特點(diǎn),緊密結(jié)合勘探實(shí)踐,從潛山與油氣的關(guān)系入手重新建立潛山內(nèi)幕油藏實(shí)用分類方法,大大拓寬了潛山找油領(lǐng)域,形成了具有低幅度、多期裂縫、多油源充注特點(diǎn)的潛山內(nèi)幕目標(biāo)成藏模式。通過對(duì)遼河坳陷低潛山及潛山內(nèi)幕油氣成藏理論的研究與勘探實(shí)踐,2001—2006年,低潛山88和潛山內(nèi)幕累計(jì)上報(bào)三級(jí)儲(chǔ)量分別達(dá)2.54×10t和1.76×10t,為遼河油田增儲(chǔ)穩(wěn)產(chǎn)作出了重大貢獻(xiàn)。圖7表1參22關(guān)鍵詞:遼河坳陷;潛山油藏;
3、成藏模式;低潛山;潛山內(nèi)幕;多期裂縫;生烴系統(tǒng);輸導(dǎo)體系中圖分類號(hào):TE122.1文獻(xiàn)標(biāo)識(shí)碼:AExplorationtheoriesandpracticesofburied2hillreservoirs:AcasefromLiaoheDepressions1111211MengWeigong,ChenZhenyan,LiPai,GuoYanmin,GaoXianzhi,HuiXuefeng,ZhangYali(1.PetroChinaLiaoheOilfieldCompany,Panjin124010,China;2.ChinaUniversityofP
4、etroleum(Beijing),Beijing102249,China)Abstract:Inrecentyears,variousbreakthroughshavebeenmadeinburiedhillreservoirexplorationinLiaoheDepression.ExplorationtargetshaveshiftedfromtheShallow2mediumburiedhillreservoirswithclearerreservoirformingconditionstothelowandinnerburiedhillrese
5、rvoirswithdeeper,hiddenandmorecomplexfeatures.Reservoir2formingconditionsoflowandinnerburiedhillswerestudiedinaspectsofbasementtectonicactivity,typeofburiedhills,lithologyandreservoircharacteristics,hydrocarbongeneratingsystemandhydrocarbonconductingsystem.Apracticalclassification
6、methodofinnerburiedhillreservoirshasbeenre2establishedinaccordancewiththerelationshipbetweenburiedhillsandhydrocarbonaccumulations,bystudyingreservoircharacteristicsofinnerburiedhillreservoirswithconsiderationofexplorationpractices.Suchaclassificationmethodhaswidenedthehydrocarbon
7、searchingscopeinburiedhills,andbuiltupareservoirformingpatternfortheexplorationtargetsinsideburiedhillswithlowamplitude,multiphasefracturesandmultisourcecharging.Basedonthetheoreticalstudiesandexplorationpracticesoflowandinnerburiedhillreservoirs,the3Preservesreportedforlowandinne
8、rburiedhillreservoirsreached882.5
