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《大牛地气田上古生界储层物性差异影响因素.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第33卷第5期石油察骀沾质Vo1.33.No.52011年1O月PETROLEUMGEOLOGY&EXPERIMENT0ct..2011文章编号:1001—6112(2011)O5一O513—04大牛地气田上古生界储层物性差异影响因素王永建,王延斌,李霞,高莎莎,郭慧(1.华北科技学院安全工程学院,河北廊坊065201;2.中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083)摘要:大牛地气田上古生界储层是典型的低孔低渗,从储层物性来看,盒3、盒2段最好,其次是山1段,较差的为山2、盒1段。造成上古生界主要储层物性差异的因素主要为沉积相、成岩作用、粘土矿物和裂缝等。沉积相
2、是形成物性差异的基础,曲流河砂体物性最好,其次是辫状河砂体,而三角洲河道砂体最差;成岩作用是形成物性差异的重要因素,尤其是压实作用,从山1段至盒3段随着压实作用的减弱,储层剩余粒间孔隙增多,物性相对变好;粘土矿物成分、含量及裂缝对物性差异的形成有着不可忽视的作用,一般伊利石含量越高,物性越差;微裂缝越发育,物性越好。关键词:储层物性;成岩作用;沉积相;上古生界;大牛地气田中图分类号:TE122.24文献标识码:AControllingfactorsofphysicalpropertyofUpperPaleozoicreservoir,DaniudiGasFieldWangYongjian,
3、WangYanbin。,LiXia,GaoShasha,GuoHui(1.SafetyEngineeringCollege,NorthChinaInstituteofScienceandTechnology,Langfang,Hebei065201,China;2.StateKeyLaboratoryofCoalResourcesandMineSafety,ChinaUniversityofMiningandTechnology,Beijing1000083,China)Abstract:TheUpperPaleozoicreservoirsintheDaniudiGasFieldarec
4、haracterizedbylowporosityandlowpermeability.Thephysicalpropertyofthe3rdand2ndmembersofLowerShiheziFormationisthebest,whilethatofthe1stmemberofShanxiFormationiSworse。andthatofthe2ndmemberofShanxiFormationandthe1stmemberofLowerShiheziFormationistheworst.Thedifferenceofphysicalpropertyisinfluencedbys
5、everalfactorssuchassedimentaryfacies,diagenesis,claymineral,fissureandSOon.Sedimentaryfaciesisthebasicfactor.Meanderingsandbodyhasthebestphysicalproperty,brai—dedfluvialsandbodythesecond,anddeltachannelsandbodytheworst.Diagenesisalsoplaysanimpor—tantrole,especiallythecompactioneffect.Fromthe1stmem
6、berofShanxiFormationtothe3rdmem—berofLowerShiheziFormation,asthecompactioneffectdecreases,thesurplusinterparticleporosityofreservoirincreasesandthephysicalpropertyisimproved.Claymineralcomposition,contentandfissurealsoinfluencephysicalproperty.Generallyspeaking,higherillitecontentresultsinworsepro
7、perty,andthegenerationofmicrofracturemayimproveproperty.Keywords:reservoirphysicalproperty;diagenesis;sedimentaryfacies;UpperPaleozoic;DaniudiGasField约400km,该斜坡为一单调的西倾大单斜,倾角1地质概况不足1。,断裂和局部构造不发育,只有一些局部低鄂尔多斯盆地位于华北地
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