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1、第22卷第5期現(xiàn)代地質(zhì)Vol122No152008年10月GEOSCIENCEOct12008大慶杏南地區(qū)葡I組三角洲前緣儲層的非均質(zhì)性1122張雁,藺景龍,朱炎,郝蘭英(11大慶石油學(xué)院地球科學(xué)學(xué)院,黑龍江大慶163318;21大慶油田有限責(zé)任公司第五采油廠,黑龍江大慶163513)摘要:當(dāng)油田主力油層進(jìn)入高含水期時,非主力油層接替主力油層將成為必然趨勢。三角洲前緣亞相儲層非均質(zhì)性較強(qiáng),一直以來被作為非主力油層。為提高非主力油層的儲量動用程度,必須精細(xì)研究三角洲前緣亞相儲層非均質(zhì)性特征,查明剩余油分布規(guī)律,從而有效
2、指導(dǎo)油田開發(fā)的調(diào)整挖潛。利用密井網(wǎng)、巖礦鑒定等資料對杏南地區(qū)葡I油層組前緣亞相儲層進(jìn)行研究,將三角洲前緣細(xì)分為枝狀、朵狀、席狀3種類型,詳細(xì)分析了不同沉積環(huán)境下砂體的成因類型,描述了不同類型砂體在平面上、空間上的展布特征和組合關(guān)系,不同砂體內(nèi)部性質(zhì)的差異以及砂體內(nèi)部微觀孔隙結(jié)構(gòu)的類型和分布特征,從平面、層間、層內(nèi)以及微觀特征等方面研究了三角洲前緣儲層的非均質(zhì)性。在此基礎(chǔ)上分析了儲層非均質(zhì)性對剩余油分布的影響,指出不同三角洲前緣儲層中剩余油的富集位置。關(guān)鍵詞:三角洲前緣;儲層非均質(zhì)性;微觀孔隙結(jié)構(gòu);杏南地區(qū)中圖分類號:
3、TE122文獻(xiàn)標(biāo)志碼:A文章編號:1000-8527(2008)05-0810-07TheStudyonHeterogeneityofDeltaFrontReservoirofPIFormationintheSouthofXingshugang,Daqing1122ZHANGYan,LINJing2long,ZHUYan,HAOLan2ying(11GeoscienceCollege,DaqingPetroleumInstitute,Daqing,Heilongjiang163318,China;21OilRecov
4、eryPlantNo15,DaqingOilfieldCorp.Ltd.,Daqing,Heilongjiang163513,China)Abstract:Whentheoilfieldmajorreservoirsareinthehighwaterperiod,replacingthemajorreservoirsbythenon2majorreservoirsbecomesaninevitabletrend.Thereservoirsofdeltafrontalsub2facesaretakenasnon2ma2
5、jorreservoirsbecauseofstrongnon2homogeneous.Toimprovereserve’sproducingdegree,itisnecessarytode2scribefinereservoirheterogeneity,andtoascertainthelawofresidualoildistribution,thentoguidetheoilfielddevelopmentadjustmentplan.Inthispaper,thecharacteristicsofreserv
6、oirofdeltafrontalsub2facesofPIFor2mationinthesouthofXingshugangarestudiedwiththedataofdensewellpatternandrock2mineralidentifica2tion.Thedeltafrontalsub2facescanbedividedintolobatedeltafrontalsub2faces,brancheddeltafrontalsub2facesandsheeteddeltafrontalsub2faces
7、.Thegenetictypesofsandbodiesindifferentsedimentaryenvivonmentsareanalyzedindetail,andthedistributionandspace2matchingrelationshipofdifferentsandbodiesarestudied.Themicro2porestructuretypeisstudiedonthebaseofthethinsectionanalysis,sothereservoirheterogeneityisst
8、udiedincludingplaneheterogeneity,interlayerheterogeneity,in2layerheterogeneityandmicrocosmiccharac2teristic.Theinfluenceofreservoirheterogeneityremainedoilisanalysed,andenri
