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时间:2019-03-08
《中国致密油评价标准_主要类型_基本特征及资源前景_贾承造》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、第33卷第3期石油学报Vol.33No.32012年5月ACTAPETROLEISINICAMay2012文章编号:0253-2697(2012)03-0343-08中国致密油评价标准、主要类型、基本特征及资源前景贾承造12222邹才能李建忠李登华郑民(1.中国石油天然气集团公司北京100724;2.中国石油勘探开发研究院北京100083)摘要:致密油是指以吸附或游离状态赋存于生油岩中,或与生油岩互层、紧邻的致密砂岩、致密碳酸盐岩等储集岩中,未经过大规模长距离运移的石油聚集。在明确了致密油的概念和内涵基础上,提出了10项评价致密油的关键指标。据孔隙度与渗透率划分出3类致密油
2、储层。根据致密油层与生油岩层紧密接触的成因关系,确定了3种致密油类型:①湖相碳酸盐岩致密油;②深湖水下三角洲砂岩致密油;③深湖重力流砂岩致密油。中国致密油分布广泛,目前在鄂尔多斯盆地三叠系延长组长6—长7段、准噶尔盆地二叠系芦草沟组、四川盆地中-下侏罗统、松辽盆地白垩系青山口组—泉头组等获得了一些重要的勘探发现。分析未来致密油发展前景,运用资源丰度类比法初步预测中国致密油地质资源总量(106.7~111.5)×108t,是中国未来较为现实的石油接替资源。关键词:致密油;评价标准;致密油类型;致密油储层;资源潜力中图分类号:TE122.1文献标识码:AAssessmentcr
3、iteria,maintypes,basicfeaturesandresourceprospectsofthetightoilinChina12222JIAChengzaoZOUCainengLIJianzhongLIDenghuaZHENGMin(1.ChinaNationalPetroleumCorporation,Beijing100724,China;2.PetroChinaResearchInstituteofPetroleumExploration&Development,Beijing100083,China)Abstract:Thetightoilrefer
4、stoanoilthataccumulatesinsourcerocksinafreeoradsorbedstateorintightsandstonesandcarbon-atesinterbeddedwithoradjacenttosourcerocks.Generally,thisoilaccumulationhasnotyetexperiencedalarge-scale,long-dis-tancemigration.Basedontheclarityofthetightoilconceptandconnotation,weproposedtenkeyindice
5、stoevaluatethetightoil.Tightoilreservoirscanbegenerallydividedinto3differenttypesbasedonporosityandpermeability,whilethetightoilitselfcanbealsoclassifiedinto3typesdependingonthegeneticrelationshipofaclosecontactbetweentightreservoirsandsourcerocks,i.e.①tightoilinlacustrinecarbonaterocks;②t
6、ightoilindeep-lakegravityflowsandstonesand③tightoilindeep-lakedeltasand-stones.ThetightoiliswidelydistributedinChina,currently,anumberofimportantexplorationdiscoveriesofthetightoilhavebeenachievedintheTriassicChang-6andChang-7sectionsofYanchangFormationintheOrdosBasin,thePermianLucaogouFor
7、-mationintheJunggarBasin,theMiddle-LowerJurassicoftheSichuanBasinandtheCretaceousQingshankou-QuantouFormationoftheSongliaoBasin.ToexpectthetightoilprospectinChina,wepreliminaryforecastthatthetightoilgeologicalresourcesinChina8areabout(106.7~111.5)×10t.Combined
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