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时间:2020-03-27
《金山气田主要气层组储层特征.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第43卷第3期当代化工Vo].43。No.32014年3月ContemporaryChemicalIndustryMarch,2014金山气田主要气层组储层特征孙楠,卢志强(东北油气分公司勘探开发研究院,吉林长春130062)摘要:为给新区开发提供充分的地质依据,通过岩石薄片、扫描电镜、x一射线衍射、铸体薄片、压汞等资料对金山气田储层的岩石学特征、物性特征及微观孔喉结构特征进行了详细研究。研究结果表明,该区储层岩性复杂、岩石成分和结构成熟度低,砂岩储层主要为含砾不等粒砂岩、中砂质细砂岩和砂质砾岩,砾岩储层以细砾岩和中砾岩为主,储层的母岩类型多,以变质岩为主,填隙物和重矿物含量较高;孔隙类型主
2、要发育原生孔隙,孔喉组合关系以特低孔一细喉为主,孔喉分选差;储层物性纵向上变化大,属特低孔、特低渗储层;影响金山气田储层物性的因素主要是岩石相和成岩作用。关键词:金山气田;岩石学特征;孔喉特征;物性特征中图分类号:TE122文献标识码:A文章编号:1671—0460(2014)03—0383—03ReservoirCharacteristicsofMainGasReservoirsinJinshanGasFieldSUNNan,LUZhi—qiang(ExplorationandDevelopmentResearchInstitute,NortheastOil&GasBranch,SINOP
3、EC.JilinChangchun130062,China)Abstract:Toprovideadequategeologicalbasisfordevelopinganewarea,throughtherockthinsections,scanningelectronmicroscopy(SEM),X—raydiffraction,thecastingthinsections,pressuremercuryandsoon,therockcharacteristics,physicalpropertiesandmicro-porestructurecharacteristicsofJins
4、hangasfieldwerestudiedindetail.TheresearchresultsshowthatthereservoirlithologyofJinshangasfieldiscomplex.1owrockcompositionandstructurematurityarelow,sandstonereservoirismainlypebbledbyinequigranularsandstone.finesandstoneandsandyconglomerateinsandy,theconglomeratereservoirismainlyfineconglomeratea
5、ndglutenite,varioustypesofreservoirrocksinthestudyareaaremainlymetamorphicrock,fillercontentandheavymineralcontentarehigh;Theporetypesweremainlydevelopedprimaryandsecondaryintergranularporesbetweengrainsdissolvedpores;Theporethroatiscomposedoflowsizeporeandmicro-finethroatandpoorporethroatsorting;R
6、eservoirphysicalpropertiesinthelongitudinalchangesinthestudyareaislarger,belongtoextremelylowporosity,lowpermeabilityreservoir;Thefactorsafectingthereservoirphysicalpropertiesaremainlyrockfaciesanddiagenesis.Keywords:Jinshangasfield;Rockcharacteristics:Throatcharacteristics:Physicalproperties金山气田位于
7、梨树断陷东部斜坡带南部,紧邻类型主要为含砾不等粒砂岩、中砂质细砂岩和砂质桑树台大断裂,西部为沈阳凸起,东部为公主岭凸砾岩。针对主要砂岩储层分析结果,石英含量6%~起。金山气田总体上呈南高北低的构造特征;沙河49%,平均25.1%;长石含量12%~58%,平均子组和火石岭组时期为东断西超箕状断陷;桑树台28.9%;岩屑含量22%~68%,平均45.48%,研究断裂为控盆断裂,断距大,延伸远,为成藏有利区区储层以
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