lmaturationofsourcerock,thresholdofoilgenerationandmainstageofoilandgasgeneration.inhighthermalgradienttypeofbasi,thethresholdofoilgenerationisshallow,whichisadvantageoustoquickgenerationofoilandgas.inlowthermalgradienttypeofbasi,thethresholdofoilgenerationisdeepandtheeffectiveexplorationdepthscopeandexplorationdepthareallincreased.
accordingtothecompreheiveanalysisofbasinstructuralandthermalhistory,thematureevolutionofsourcerockandpreservativecondition,itisthoughtthatsongliaobasin,bohaiwanbasin,ordosbasin,tuloufanhamibasinisthefavorableexplorationareaandisworthfordetailexploration.thecarboniferousandpermianinbohaiwanbasinandqihuibasin,thedeeplayerofpermianandtriaicintaibeidepreionoftuloufanhamibasinandthelowercretaceousinjiudongbasinisthefurtherexplorationfields.
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