伊通盆地岔路河斷陷南段構(gòu)造特征與油氣成藏

伊通盆地岔路河斷陷南段構(gòu)造特征與油氣成藏伊通盆地岔路河斷陷南段構(gòu)造特征與油氣成藏

摘要：

本文主要研究伊通盆地岔路河斷陷南段的構(gòu)造特征與油氣成藏情況。通過對(duì)該斷陷南段的地質(zhì)構(gòu)造、地球物理特征、沉積特征等方面的分析，在認(rèn)識(shí)該斷陷南段的構(gòu)造演化歷史的基礎(chǔ)上，揭示了該區(qū)域的油氣成藏特征。研究表明，岔路河斷陷南段具有明顯的多期次的斷裂構(gòu)造和不同期次的構(gòu)造作用對(duì)該區(qū)域的油氣分布和成藏條件產(chǎn)生了影響。研究還發(fā)現(xiàn)區(qū)域受華北克拉通所控制的微弱構(gòu)造形態(tài)，受東北亞造山帶的影響也較大。同時(shí)，在研究區(qū)域的巖石學(xué)和埋藏史中發(fā)現(xiàn)了多種類型的油氣成藏模式。在全面了解了伊通盆地岔路河斷陷南段的構(gòu)造特征和油氣成藏情況之后，對(duì)該區(qū)域的油氣勘探和開發(fā)具有一定的指導(dǎo)意義。

關(guān)鍵詞：伊通盆地，岔路河斷陷南段，構(gòu)造特征，油氣成藏

Abstract：

ThispapermainlystudiesthetectoniccharacteristicsandoilandgasaccumulationofthesouthernsectionoftheChaluhuFaultDepressioninYitongBasin.Throughtheanalysisofgeologicalstructure,geophysicalcharacteristics,sedimentarycharacteristicsandotheraspectsofthesouthernsectionofthefaultdepression,thetectonicevolutionhistoryofthesouthernsectionofthedepressionandtheoilandgasaccumulationcharacteristicsoftheareaarerevealed.ThestudyshowsthattheChaluhuFaultDepressionsouthernsectionhasobviousmulti-stagefaultstructures,andtheeffectsofdifferentstagesofstructuralactivityhaveaffectedthedistributionandaccumulationconditionsofoilandgasintheregion.ThestudyalsofoundthattheregioniscontrolledbytheweaktectonicmorphologyoftheNorthChinaCratonandisalsoinfluencedbytheNortheastAsiaorogenicbelt.Atthesametime,multipletypesofoilandgasaccumulationmodesarefoundinthepetrologyandburialhistoryofthestudyarea.AfteracomprehensiveunderstandingofthetectoniccharacteristicsandoilandgasaccumulationofthesouthernsectionoftheChaluhuFaultDepressioninYitongBasin,thereisacertainguidancesignificanceforoilandgasexplorationanddevelopmentinthisarea.

Keywords:YitongBasin,SouthernsectionofChaluhuFaultDepression,Tectoniccharacteristics,OilandgasaccumulatioTheYitongBasinisakeypetroleum-bearingbasininNortheastChina,andthesouthernsectionoftheChaluhuFaultDepressionisanimportantexplorationtargetinthebasin.Throughdetailedfieldsurveys,drillingdataanalysis,andlaboratoryexperiments,thetectoniccharacteristicsandoilandgasaccumulationmodesinthisareahavebeencomprehensivelystudied.

ThesouthernsectionoftheChaluhuFaultDepressionischaracterizedbyacomplextectonichistory,includingmultiplephasesoffaulting,folding,anduplifting.Thefaultsinthisareaaregenerallysteepanddeep-seated,withhighdipanglesandlargedisplacement.Theintensetectonicactivityhasledtotheformationofavarietyofstructuraltraps,includingfaultedanticlines,rolloveranticlines,andfaultedterracestructures.

Thehydrocarbonaccumulationinthisareaismainlycontrolledbythestructuraltrapsformedbyfaultsandfolds.Thereservoirsaremainlycomposedofsandstoneandconglomerate,withgoodporosityandpermeability.Thesourcerocksaremainlymatureorganic-richshalesofthelateJurassicandearlyCretaceous.Themigrationpathwaysaremainlycontrolledbythefaultsandfracturesinthearea.

Insummary,thetectoniccharacteristicsandoilandgasaccumulationmodesofthesouthernsectionoftheChaluhuFaultDepressioninYitongBasinarecomplexanddiverse.Theexplorationanddevelopmentofoilandgasresourcesinthisarearequireacomprehensiveunderstandingofthegeology,tectonichistory,andpetroleumsystems.TheresultsofthisstudyprovidevaluableguidanceforfutureexplorationanddevelopmentactivitiesinthisareaGiventhecomplexityanddiversityoftectonicandpetroleumsystemsinthesouthernsectionoftheChaluhuFaultDepressioninYitongBasin,anumberofchallengesandopportunitiesareassociatedwithexploringanddevelopingoilandgasresourcesinthisarea.Someofthesechallengesincludethedifficultyinaccuratelycharacterizingsubsurfacestructuresandfluids,thescarcityofdatapertainingtothedeepfaultsystems,andthehighvariabilityofreservoirqualityanddistribution.However,withthedevelopmentofnewexplorationtechnologiesandtechniques,aswellastheleveragingofadvanceddataanalyticsandmodelingtools,therearepromisingopportunitiesforthediscoveryandextractionofeconomicallyviablehydrocarbonsinthisregion.

Onepotentialopportunityistheexplorationofunconventionalresources,suchastightsandstones,shalegas,andcoalbedmethane.Unconventionalhydrocarbonresourcesarecharacterizedbytheirlowpermeabilityandpoorporosity,requiringinnovativedrillingandcompletionmethodstoextract.Suchresourcesareoftendistributedbroadlywithingeologicalformationsandhavelowerexplorationcostsincomparisontoconventionalreservoirs.InthesouthernsectionoftheChaluhuFaultDepression,historicaldataandmodelingstudiessuggestthattherearepromisingopportunitiesfortheexplorationandexploitationofunconventionalresources,potentiallyprovidinganewsourceofhydrocarbonsfortheregion.

Inadditiontounconventionalresourceexploration,thereisanopportunityforenhancingsecondaryandtertiaryrecoveryofconventionaloilandgasreservoirswithintheChaluhuFaultDepression.Enhancedoilrecovery(EOR)techniques,suchaswaterfloodingandgasinjection,offerthepotentialtounlockadditionalhydrocarbonreservesthatareinaccessiblethroughtraditionalrecoverymethods.Historically,EORhasbeenlargelyunsuccessfulintheYitongBasin,however,theadvancedanalysesandmodelingtechniquesavailabletodaypresentanewopportunityforre-evaluatingthepotentialforEORinthisarea.

Lastly,thereissignificantpotentialfortheexplorationanddevelopmentofnewprospectswithintheChaluhuFaultDepression.Whilehistoricalexplorationeffortshavefocusedontraditionalproducingformations,additionalexplorationactivitiestargetingpreviouslyunder-exploredformationscouldprovidenewinsightsintothegeologicalandhydrocarbonpotentialofthisarea.Byleveragingadvancedexplorationtoolsandtechniques,newprospectshavethepotentialtodiscoversizeablehydrocarbonreservesthathavethusfarbeenoverlooked.

Inconclusion,thesouthernsectionoftheChaluhuFaultDepressioninYitongBasinhassignificantopportunitiesandchallengesforfurtherexplorationanddevelopmentofitsoilandgasresources.Whiletherearecomplexitiesinthetectonicandpetroleumsystemsinthisregion,emergingtechnologiesandinnovativetechniquesofferpotentialsolutionstothesechallenges.AcomprehensiveunderstandingofthegeologicalmakeupandhydrocarbonsystemsinthisareawillbecriticalincapitalizingontheseopportunitiesandadvancingexplorationanddevelopmentactivitiesInadditiontothegeologicalchallenges,theoilandgasindustryintheAsia-Pacificregionalsofacesuniqueregulatoryandgeopoliticalissues.Governmentsinsomecountriesmayhavedifferentsetsoflawsandregulationssurroundingoilandgasexplorationandproduction,whichcanimpacttheindustry'soperationsintheseareas.Thereisalsothepotentialforconflictsandtensionsbetweenneighboringcountriesovermaritimeboundariesandresourceownership,whichcanleadtodisruptionsinproductionandsupplychains.

Anotherchallengefacingtheindustryistheincreasingdemandforenergyamidgrowingconcernsoverclimatechange.Astheworldmovestowardsalow-carboneconomy,theoilandgasindustryintheAsia-Pacificregionwillneedtofindwaystoreduceitscarbonfootprintandtransitiontowardsmoresustainableenergysources.Developingnewtechnologiesandinnovativesolutionsforemissionsreductionwillbecriticalinensuringtheindustry'slong-termviabilityandsustainability.

Despitethesechallenges,theopportunitiesfortheoilandgasindustryintheAsia-Pacificregionremainsignificant.Wi