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时间:2020-04-12
《《非均质性油藏测井评价新技术及其在南海东部的应用》.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第27卷第3期中国海上油气VoI.27NO.32015年6月CH1NAOFFSHORE()IIANDGASJkin.2015文章编号:1673—1506(2015)03—0038—08DOI:10.119355.issn.1673—1506.2(115.03.006非均质性油藏测井评价新技术及其在南海东部的应用冯进潘卫国管耀石磊周开金(中海石油(中国)有限公司深圳分公司广东广州510240)冯进,潘卫国,管耀,等.非均质性油藏测井评价新技术及其在南海东部的应用口],中国海上油气,20l5,27(3):38—45.FengJin,PanWeiguo,GuanYao,eta1.
2、NewloggingevaluationtechnologyforheterogeneousreservoirsandtheirapplicationintheeasternSouthChinaSeaEJ].ChinaOffshoreOilandGas,2015,27(3):3845.摘要南海东部发现众多不同类型的非均质性油藏,并广泛发育砂泥岩薄互层,常规测井手段难以精确评价非均质性油藏及精细划分薄储层。为此,提出了3种有针对性的测井评价新技术。从孔隙半径和孔喉结构的角度剖析南海东部灰岩油藏的非均质性,采用5M孔隙结构分类技术和储层类型自动识别技术实现了储层类型与测井处理模
3、型的自动匹配,并分类评价了灰岩油藏储层;通过FMI图像合成高分辨率电阻率曲线,分析高、低分辨率曲线在薄层中响应的差异,解决了南海东部砂泥岩薄互层划分难题;储层的物性变化、层内非均质性强导致南海东部中孔砂岩成为盖层,利用毛管压力建立了静态力学关系,实现了砂岩盖层物性封闭能力的定量评价。这些测井评价新技术已经在南海东部众多非均质性油藏中得以应用,取得了良好的效果。关键词非均质性油藏;5M孔隙结构分类;高分辨率测井;中孔砂岩盖层;南海东部中图分类号:TE132.14文献标识码:ANewloggingevaluationtechnologyforheter0gene0usreser
4、voirsandtheirapplicationintheeasternSouthChinaSeaFengJinPanWeiguoGuanYaoShiLeiZhouKaijin(ShenzhenBranchofCNOOCLtd.,Guangzhou,Guangdong510240,China)Abstract:DifferenttypesofheterogeneousreservoirswerefoundintheeasternSouthChinaSea,wherethininter—beddedformationswereextensivelydeveloped.Itis
5、difficulttoevaluateheterogeneousreservoirsandidentifythinbedaccuratelywithconventionallogging.Tosolvetheseproblems,threetailoredevalua—tionmethodsweredeveloped.Theheterogeneityoflimestonewasanalyzedbasedonporeradiusandporethroatstructure;automaticallymatchingtypesofreservoirwithinterpretat
6、ionmodelswasrealizedusing5Mporestructureclassificationtechnologyandreservoirtypesautomaticidentificationtechnologybylog—gingcurves.Thethinlayersweredetectedbycomparingtheresponsesofhigh—resolutionandlow—resolu—tionresistivitycurves,whichweresynthesizedbyFMIimage.Medium—porositysandstonecap
7、rockisformedintheeasternSouthChinaSea.becauseofthestronginnerheterogeneity.Staticmechanicalrela—tionshipswereestablishedbasedoncapillarypressurecurves,whichcanbeusedtodescribethesealinga—bilityofsandstonecaprockquantitatively.Thesetechniqueshavebeenappliedinth
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