简介：The22ndIASMeetingofSedimentologywasheldintheConventionCentreoftheGrandHotelAdriatic,inasmalltouristictownOpatija,locatedontheeasternAdriaticcoastwhereCentralEuropeandtheMediterraneanmeet.ItwasthesecondIASMeetingheldinCroatia--thefirstone,4thIASRegionalMeetingofSedimentology,washeldinSplitin1983.TheMeetinginOpatijawasorganizedbytheInstituteofGeology(Zagreb)andtheCroatianGeologicalSociety.ThesponsorwasMinistryofScienceandTechnologyoftheReoublicofCroatia.

简介：

简介：Naturalgascontaininghydrogensulphide(H2S)hasbeenfoundinseveralpetroliferousbasinsinChina,suchastheSichuanBasin,BohaiBayBasin,OrdosBasin,TarimBasin,etc.NaturalgaswithhigherH2Scontents(H2S＞5%mol.)ismostlydistributedinboththegasreservoirsofDukouhe,Luojiazhai,PuguangandTieshanpo,whichbelongtotheTriassicFeixianguanFormationinthenortheasternSichuanBasinandthoseoftheKongdian-ShahejieformationsinthenortheasternJinxianSagoftheJizhongDepression,BohaiBayBasin.IntheSichuanBasin,theH2Scontentsofnaturalgasaverageover9%andsomecanbe17%,whilethoseoftheBohaiBayBasinrangefrom40%to92%,beingthenoneofthegasreservoirswiththehighestH2Scontentsintheworld.Basedondetailedobservationandsampleanalysisresultsofatotal5000mofcorefromover70wellsintheabove-mentionedtwobasins,especiallysulfurisotopicanalysisofgypsum,brimstone,pyriteandnaturalgas,alsowithintegratedstudyofthegeochemicalcharacteristicsofhydrocarbons,itisthoughtthatthenaturalgaswithhighH2Scontentsresultedfromthermochemicalsulfatereduction(TSR)reactions.Amongthem,thenaturalgasintheFeixianguanFormationresultedfromTSRreactionsparticipatedbyhydrocarbongas,whilethatintheZhaolanzhuangoftheJinxianSagbeingtheproductofTSRparticipatedbycrudeoil.DuringtheconsumptionprocessofhydrocarbonsduetoTSR,theheavyhydrocarbonswereapttoreactwithsulfate,whichaccordinglyresultedinthedrycoefficientofnaturalgasincreasingandthecarbonisotopesbecomingheavier.

简介：通过对西峰油田三叠系延长组长22砂层组的泥岩颜色、岩石类型、沉积构造、生物化石、沉积层序以及单井相等的研究，认为延长组长22油层主要沉积相为正常三角洲沉积。三角洲平原是该区三角洲砂体堆积的主体。可进一步辨别出分流河道、天然堤、分流间湾及决口扇4个微相。

简介：RamanpeaksofvarioushydratesintheH2O-NaCl-CaCl2systemhavebeenpreviouslyidentified,butaquantitativerelationshipbetweentheRamanpeaksandXNaCl(i.e.,NaCl/(NaCl+CaCl2))hasnotbeenestablished,mainlyduetothedifficultytofreezethesolutions.Thisproblemwassolvedbyaddingaluminapowdertothesolutionstofacilitatenucleationofcrystals.Cryogenic(-185oC)Ramanspectroscopicstudiesofalumina-spicedsolutionsindicatethatXNaClislinearlycorrelatedwiththetotalpeakareafractionofhydrohalite.Capsulesofsolutionsmadefromsilicacapillarywerepreparedtosimulatefluidinclusions.Mostoftheseartificialfluidinclusionscouldnotbetotallyfrozenevenattemperaturesaslowas-185oC,andthetotalpeakareafractionofhydrohaliteisnotcorrelatedlinearlywithXNaCl.However,thedegreeofdeviation(?XNaCl)fromthelinearcorrelationestablishedearlierisrelatedtotheamountofresidualsolution,whichisreflectedbytheratio(r)ofthebaseline"bump"area,resultingfromtheinterstitialunfrozenbrinenear3435cm-1,andthetotalhydratepeakareabetween3350and3600cm-1.Alinearcorrelationbetween?XNaClandrisestablishedtoestimateXNaClfromcryogenicRamanspectroscopicanalysisforfluidinclusions.

简介：<正>1IntroductionTheundergroundbrineresourcesdistributingwidelyinSichuanBasin,Chinahavedrawnworldwideattentionduetotheirunusualelementabundanceandexcellentquality.

简介：