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1、2011年6月大慶石油地質(zhì)與開(kāi)發(fā)June,2011第30卷第3期PetroleumGeologyandOilfieldDevelopmentinDaqingV01.30No.3DOI:10.3969/J.ISSN.1000—3754.201I.03.0I5底水油藏特高含水期剩余油模式及開(kāi)發(fā)對(duì)策薛永超程林松梁衛(wèi)劉偉新。(1.中國(guó)石油大學(xué)石油工程教育部重點(diǎn)實(shí)驗(yàn)室,北京102249;2中海石油有限公司深圳分公司廣東廣州510240;3.大慶油田有限責(zé)任公司第八采油廠,黑龍江大慶163514)摘要:準(zhǔn)確表征剩余油是特高含水期油藏研究重點(diǎn),而目前與底水油藏有關(guān)的剩余油研究
2、甚少。以NF25底水油藏為例開(kāi)展深入研究,目標(biāo)油藏剩余油分布主要受構(gòu)造、夾層、流動(dòng)單元、韻律、開(kāi)發(fā)井網(wǎng)及井型等因素控制,剩余油分布?xì)w納為“2高”(構(gòu)造高部位、高層位剩余油富集)、“3低”(層內(nèi)低滲段、層間低滲層、井網(wǎng)控制程度低區(qū)域剩余油富集)、“4區(qū)”(水錐周?chē)鷧^(qū)、夾層遮擋區(qū)、差流動(dòng)單元區(qū)、流動(dòng)單元過(guò)渡區(qū)剩余油富集)、“5態(tài)”(構(gòu)造主控“屋脊油”、夾層主控“屋檐油、屋頂油”、韻律主控“明治、工字型”、井網(wǎng)主控“孤島油、朵狀油”、流動(dòng)單元主控“無(wú)規(guī)則”)。分析可知不同開(kāi)發(fā)階段,剩余油分布狀態(tài)存在較大差異,其對(duì)應(yīng)的挖潛策略也有較大差別。關(guān)鍵詞:底水油藏;剩余油;模式
3、;屋儋油;屋頂油中圖分類號(hào):TE349文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000-3754(201】)03-0074-05REMAINNEDoILPATTERNSFoRRESERVoIRWITHBoTToM1lVATERATHIGHWATER.CUTSTAGEANDDEVELoPMENTPoLICYXUEYongchao,CHENGLinsong,LIANGWei,LIUWeixin(1.MOEKeyLaboratoryinPetroleumEngineeringofChinaUniversityofPetroleum,BeO'ing102249,China;2.Shen
4、zhenBranchCompan),ofCNOOCCompanyLtd.,Guangzhou510240,China;3.No.8OilProductionCompanyofDaqingOilfieldCompanyLtd.,Daqing163514,China)Abstract:Theccuratecharacterizationofremainedoilisthekeypointofresearchonreservoirwithsuper—highwa—ter-cut,however,SOfartherelatedresearchisverylimited.
5、ThispapertakestheNF25reservoirwithbottomwaterasanexampleforfurtherstudytobecarriedout.Thedistributionofremainedoilinthetargetedreservoirismainlycontrolledbyfactors,suchasstructures,interbeds,flowunits,rhythms,developmentwellpatternsandwelltypes.Thedistributionofremainedoilissummedupa
6、s“2highs’’rtheremainedoilisenrichedinthehighstructuralpo—sitionsandhorizons),“3lows”(theremainedoilisenrichedinthelow—permeabilitysectionsinlayer,inthelow-permeabilitysectionsbetweenlayers,andintheareaswithlowcontrollingdegreeofwellpattern),“4areas”(theremainedoilisenrichedintheareas
7、aroundwatercone,theonesblockedbyinterbeds,thepoorflowunitareasandthetransitionareasofflowunit)and“5states”(theridgeoilcontrolledbystructures;thecaveandroofoilscontrolledbyinterbeds:thesandwichandI—shapedoilscontrolledbyrhythms,theisolated—islandandlobateoils收稿日期:2010.07-04改回日期:2011—0
8、1—20基金項(xiàng)目:國(guó)家油