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《塔河油田縫洞型碳酸鹽巖油藏剩余油分布特征.pdf》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。
1、2012年12月大慶石油地質(zhì)與開發(fā)DeC．，2012第31卷第6期PetroleumGeologyandOilfieldDevelopmentinDaqingV01．31No．6DOI：10．3969／J．ISSN．1000．3754．2012．06．011塔河油田縫洞型碳酸鹽巖油藏剩余油分布特征康志江崔書岳(1．中國地質(zhì)大學(xué)資源學(xué)院，湖北武漢430074；2．中國石化石油勘探開發(fā)研究院，北京100083)摘要：塔河油田縫洞型碳酸鹽巖油藏儲(chǔ)集體三i三要由大型溶洞、裂縫及溶孔組成，其中大型溶洞是主要的儲(chǔ)油與
2、產(chǎn)油空間。大型溶洞內(nèi)流體流動(dòng)為自由流，與砂巖孔隙中的流體流動(dòng)具有較大的差別。溶洞內(nèi)油水兩相流時(shí)不存在固體介質(zhì)對(duì)流體流動(dòng)阻力，油水間的重力作用表現(xiàn)突出，油水間重力分異迅速，油水界面清晰。溶洞之間由裂縫相連通，耦合后流動(dòng)更加復(fù)雜，裂縫內(nèi)流體流動(dòng)表現(xiàn)為高速達(dá)西流動(dòng)，底水沿裂縫水竄速度快。結(jié)合生產(chǎn)動(dòng)態(tài)與數(shù)值模擬研究，揭示了5種縫洞型油藏復(fù)雜介質(zhì)剩余油分布類型，即井旁溶洞剩余油、溶洞頂部剩余油、縫洞剩余油、下層溶洞剩余油和裂縫上部剩余油等，為塔河油田開發(fā)調(diào)整及提高采收率提供了地質(zhì)基礎(chǔ)。關(guān)鍵詞：塔河油田；縫洞型碳酸鹽
3、巖油藏；剩余油分布；數(shù)值模擬中圖分類號(hào)：TE327文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1000-3754(2012)06-0054-05DISTIUBUTIONCHARACTERISTICSOFTHEREMAINEDOILINTAHEFRACTURED．CAVECARBoNATEoILRESERVoIRSKANGZhijiang，CUIShuyue(1．ResourcesCollegeofChinaUniversityofGeosciences，Wuhan430074，China；2．ResearchInstitut
4、eofPetroleumExplorationandDevelopment，SINOPEC，Beijing100083，China)Abstract：Fractured．cavecarbonatereservoirsofTaheOilfieldaremainlycomposedofvastkarstcaves，fracturesanddissolvedvugs，andtheformeristheprincipalspacetoreserveandproduceoil．Theliquidflowinthea
5、bovekindofreservoirbelongstofreeone，whichpossessesmuchsharpercontrastwiththeflowinsandstoneporesandfractures．Thereisnotanyflowresistancetoflowliquidsforthesolidmediaintheoilandwatertwo—phaseflowinthekarstcaves，thegravitybetweentheoilandwaterdisplayswellan
6、dthetheirgravitydifferentiationisfast，andmoreovertheinterfacebetweenthemisprettyclear．Thecavesareconnectedbythefractures，aftertheintegration，theflowbecomesrathercomplicated：theliquidflowwithinthefracturesischaracterizedbyhigh—speedDarcyflow-thewatercrossi
7、ngofthebottomwateralongthefracturesisratherswift．Combiningwiththeproductionperform-ancesandtheresearchesofthenumericalsimulation，fivekindsofremainedoildistributionaredisclosedforthe’fractured—caveoilreservoirswithcomplexmedia：karst—caveremainedoilnearbyth
8、ewell，theoilremainedonthetopofthekarstcaves，fracturedcaveremainedoil，theoilremainedinthelowerkarstcavesandtheoilremainedontheupperpartofthefractures．Alltheachievementsobtainedabovehaveprovidedthegeologicalfoundation
