%0 Journal Article
%T SealingFeaturesofFluid-RockSystemanditsControlonAcidicDissolutioninCretaceousSandstoneReservoirs,KuqaSubbasin
%A HAN
%A Denglin
%A LI
%A Man
%A LI
%A Zhong
%A *and
%A Anita
%A TORABI
%J µØÖÊѧ±¨
%P 1296-1306
%D 2015
%X TheCretaceousBashijiqikeFormationisthemaingas-bearingstratainthenorthernstructuraldeformationzoneofKuqasubbasin.Theacidicdissolutionofthisformationaroseat5£¿4Ma,whichcorrespondstothelateburialstageoftheBashijiqikeFormation.Variabilityofinterlayerduetorockcompositionisnegligible.Differentiationofacidicdissolutioninsandstoneswascontrolledbydifferenceinamountofexogenousacidfluidfromunderlyingstrata.Fortheabsenceofsedimentaryandstructuralcarriersystembetweentheisolatedsandstonereservoirs,mostfluid-rocksystemsshowrelativesealingfeatureduringlaterburialstagebysealingfeatureofformationpressure,geochemicalcharacteristicsofformationwaterandcontentofdiageneticproductsinsandstones.Variationofsealingeffectsfordifferentfluid-rocksystemsisobvious.Thepressurecoefficientisinverselyproportionaltoacidicdissolvedporosityofsandstonereservoirs,indicatingthatthevariationofsealingeffectsforfluid-rocksystemmainlycontrolsthedifferentiationofacidicdissolution.
%K Cretaceous
%K Kuqasubbasin
%K diagenesis
%K sealingfeature
%K dissolution
%U http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=201504016&flag=1