第41卷第4期2022年12月吉林地质JILINGEOLOGYVol.41No.4Dec.2022文章编号:1001—2427(2022)04—19—7松辽盆地西部斜坡区油砂地质特征及成因探讨王书琴1，徐飞2，林野1，徐琦31.吉林省勘查地球物理研究院，吉林长春130012;2.吉林省地质资料馆，吉林长春130061;3.地矿长春地质工程勘察院，吉林长春130012摘要:松辽盆地西部斜坡区上白垩统姚家组二、三段为三角洲前缘亚相，识别出水下分流河道、河口坝和远砂坝三个微相，是油砂矿藏主要的储集单元，其中水下分流河道和河口坝是含油砂的优势微相。姚家组底部区域不整合面则成为油气横向运移的主要通道。斜坡区构造简单，断层较少为油气侧向运移提供良好条件。因此储层、不整合面，侧向输导是油砂矿藏形成的关键因素。关键词:松辽盆地西部斜坡区;油砂;地质特征;成藏作用中图分类号:P618.13文献标识码:A收稿日期:2022-09-11;改回日期:2022-12-12作者简介:王书琴(1985—)，女，山西大同人，吉林省勘查地球物理研究院高级工程师。GeologicalfeaturesandgenesisofoilsandinwestslopezoneofSongliaoBasinWANGShuqin1，XUFei2，LINYe1，XUQi31.InstituteofGeophysicalExplorationofJilinProvince，Changchun130012，Jilin，China;2.GeologicalArchiresofJilinProvince，Changchun130061，Jilin，China;3.ChangchunGeologicalEngineeringSurveyInstituteofGeologyandMineralＲesources，Changchun130012，Jilin，ChinaAbstract:ThesecondandthirdmembersoftheupperCretaceousYaojiaFormationinWestslopeofSongliaoBasinaredeltafrontsubfacies，identifythethreemicrofaciesofunderwaterdistributarychannel，mouthbaranddistalbar，whicharethemainreservoirunitsofoilsandsdeposits，inwhichunderwaterdistributarychannelandmouthbararethedominantmicrofaciesofoil-bearingsand．TheregionalunconformityatthebottomofYaojiaFormationbecamethemainchannelforoilandgaslateralmigra-tion．Theslopeareahassimplestructuralandfewfaults，providinggoodconditionsforoilandgasmigration．Therefore，theres-ervoir，theregionalunconformity，lateralmigrationsarekeyfactorsintheoilsandsdepositsformation．Keywords:WestslopezoneofSongliaoBasin;oilsand;geologicalfeature;hydrocarbonaccumulation0引言油砂是指油和砂的混合物，是一种非常规油气资源［1－2］。随着世界对烃类需求的不断增大，未来常规能...
