摘要
Thermalmaturationandpetroleumgenerationmodelingofshalesisessentialforsuccessfulexplorationandexploitationofconventionalandunconventionaloilandgasplays.Forbasinwideunconventionalresourceplayssuchmodeling,whenwellcalibratedwithdirectmaturitymeasurementsfromwells,cancharacterizeandlocateproductionsweetspotsforoil,wetgasanddrygas.Thetransformationofkerogentopetroleumisassociatedwithmanychemicalreactions,butmodelstypicallyfocusonfirst-orderreactionswithratesdeterminedbytheArrheniusEquation.AmisconceptionhasbeenperpetuatedformanyyearsthataccuratethermalmaturitymodelingofvitrinitereflectanceusingtheArrheniusEquationandasingleactivationenergy,toderiveatime-temperatureindex(∑TTIARR),asproposedbyWood(1988),isflawed.ThisclaimwasinitiallymadebySweeneyandBurnham(1990)inpromotingtheir'EasyRo'method,andrepeatedbyothers.Thispaperdemonstratesthroughdetailedmulti-dimensionalburialandthermalmodelinganddirectcomparisonofthe∑TTIARRand'EasyRo'methodsthatthisisnotthecase.The∑TTIARRmethodnotonlyprovidesaveryusefulandsensitivematurityindex,itcanreproducethecalculatedvitrinitereflectancevaluesderivedfrommodelsbasedonmultipleactivationenergies(e.g.,'EasyRo').Throughsimpleexpressionsthe∑TTIARRmethodcanalsoprovideoilandgastransformationfactorsthatcanbeflexiblyscaledandcalibratedtomatchtheoil,wetgasanddrygasgenerationwindows.Thisisachievedinamore-computationally-efficient,flexibleandtransparentwaybythe∑TTIARRmethodthanthe'EasyRo'method.Analysisindicatesthatthe'EasyRo'method,usingtwentyactivationenergiesandaconstantfrequencyfactor,generatesreactionratesandtransformationfactorsthatdonotrealisticallymodelobservedkerogenbehaviourandtransformationfactorsovergeologictimescales.
出版日期
2017年05月15日（中国期刊网平台首次上网日期，不代表论文的发表时间）
