四川盆地及周緣下古生界頁(yè)巖氣深埋藏強(qiáng)改造獨(dú)特地質(zhì)作用

四川盆地及周緣下古生界頁(yè)巖氣深埋藏強(qiáng)改造獨(dú)特地質(zhì)作用一、本文概述Overviewofthisarticle《四川盆地及周緣下古生界頁(yè)巖氣深埋藏強(qiáng)改造獨(dú)特地質(zhì)作用》一文旨在深入探討四川盆地及其周邊地區(qū)下古生界頁(yè)巖氣藏在深埋藏和強(qiáng)改造地質(zhì)環(huán)境下的獨(dú)特地質(zhì)作用。四川盆地作為中國(guó)重要的能源生產(chǎn)基地，其頁(yè)巖氣資源的開發(fā)對(duì)保障國(guó)家能源安全和推動(dòng)地方經(jīng)濟(jì)發(fā)展具有重要意義。然而，該地區(qū)的頁(yè)巖氣藏經(jīng)歷了復(fù)雜的埋藏和改造過(guò)程，使得其地質(zhì)特征、成藏機(jī)制和開發(fā)技術(shù)面臨諸多挑戰(zhàn)。Thearticle"UniquegeologicalprocessesofdeepburialandstrongtransformationofLowerPaleozoicshalegasintheSichuanBasinanditssurroundingareas"aimstoexploreindepththeuniquegeologicalprocessesofLowerPaleozoicshalegasreservoirsinthedeepburialandstrongtransformationgeologicalenvironmentoftheSichuanBasinanditssurroundingareas.AsanimportantenergyproductionbaseinChina,thedevelopmentofshalegasresourcesintheSichuanBasinisofgreatsignificanceforensuringnationalenergysecurityandpromotinglocaleconomicdevelopment.However,theshalegasreservoirsintheregionhaveundergonecomplexburialandtransformationprocesses,posingmanychallengestotheirgeologicalcharacteristics,reservoirformationmechanisms,anddevelopmenttechnologies.本文首先概述了四川盆地及周緣地區(qū)的區(qū)域地質(zhì)背景，包括地層結(jié)構(gòu)、構(gòu)造特征和沉積環(huán)境等。在此基礎(chǔ)上，重點(diǎn)分析了深埋藏和強(qiáng)改造地質(zhì)作用對(duì)頁(yè)巖氣藏的影響，包括頁(yè)巖有機(jī)質(zhì)演化、儲(chǔ)層物性變化、裂縫發(fā)育和保存條件等方面。通過(guò)綜合研究，揭示了該地區(qū)頁(yè)巖氣藏的獨(dú)特地質(zhì)作用及其與成藏機(jī)制之間的內(nèi)在聯(lián)系。ThisarticlefirstprovidesanoverviewoftheregionalgeologicalbackgroundoftheSichuanBasinanditssurroundingareas,includingstratigraphicstructure,structuralcharacteristics,andsedimentaryenvironment.Onthisbasis,theimpactofdeepburialandstrongtransformationgeologicalprocessesonshalegasreservoirswasanalyzed,includingtheevolutionofshaleorganicmatter,changesinreservoirphysicalproperties,fracturedevelopment,andpreservationconditions.Throughcomprehensiveresearch,theuniquegeologicalprocessesofshalegasreservoirsintheregionandtheirinherentconnectionwithreservoirformationmechanismshavebeenrevealed.本文還討論了深埋藏強(qiáng)改造地質(zhì)作用下頁(yè)巖氣藏的勘探開發(fā)策略和技術(shù)挑戰(zhàn)。針對(duì)四川盆地及周緣地區(qū)的特殊地質(zhì)條件，提出了相應(yīng)的勘探思路、技術(shù)方法和優(yōu)化建議，以期為該地區(qū)頁(yè)巖氣資源的有效開發(fā)和利用提供理論支持和實(shí)踐指導(dǎo)。Thisarticlealsodiscussestheexplorationanddevelopmentstrategiesandtechnicalchallengesofshalegasreservoirsunderdeepburialandstronggeologicaltransformation.Correspondingexplorationideas,technicalmethods,andoptimizationsuggestionshavebeenproposedforthespecialgeologicalconditionsintheSichuanBasinandsurroundingareas,inordertoprovidetheoreticalsupportandpracticalguidancefortheeffectivedevelopmentandutilizationofshalegasresourcesintheregion.總體而言，本文旨在通過(guò)系統(tǒng)研究四川盆地及周緣下古生界頁(yè)巖氣深埋藏強(qiáng)改造獨(dú)特地質(zhì)作用，深化對(duì)該地區(qū)頁(yè)巖氣成藏機(jī)制的認(rèn)識(shí)，為頁(yè)巖氣勘探開發(fā)提供科學(xué)依據(jù)和技術(shù)支持。本文的研究成果也可為類似地質(zhì)條件下的頁(yè)巖氣勘探開發(fā)提供借鑒和參考。Overall,thisarticleaimstodeepentheunderstandingoftheshalegasaccumulationmechanismintheSichuanBasinanditssurroundingLowerPaleozoicshalegasdeepburialandstrongtransformationuniquegeologicalprocesses,andprovidescientificbasisandtechnicalsupportforshalegasexplorationanddevelopment.Theresearchresultsofthisarticlecanalsoprovidereferenceandguidanceforshalegasexplorationanddevelopmentundersimilargeologicalconditions.二、四川盆地及周緣下古生界頁(yè)巖氣地質(zhì)特征GeologicalcharacteristicsofLowerPaleozoicshalegasintheSichuanBasinanditssurroundingareas四川盆地及周緣地區(qū)下古生界頁(yè)巖氣藏的形成和分布，深受其獨(dú)特的地質(zhì)條件影響。四川盆地是我國(guó)典型的克拉通盆地，其沉積歷史悠久，構(gòu)造復(fù)雜，為頁(yè)巖氣的生成和聚集提供了有利的環(huán)境。TheformationanddistributionofLowerPaleozoicshalegasreservoirsintheSichuanBasinandsurroundingareasaredeeplyinfluencedbytheiruniquegeologicalconditions.TheSichuanBasinisatypicalcratonbasininChina,withalongsedimentaryhistoryandcomplexstructures,providingafavorableenvironmentforthegenerationandaccumulationofshalegas.四川盆地及周緣地區(qū)的下古生界頁(yè)巖層系厚度大，分布廣泛，具有良好的頁(yè)巖氣儲(chǔ)層基礎(chǔ)。這些頁(yè)巖層系主要由富含有機(jī)質(zhì)的黑色頁(yè)巖、炭質(zhì)頁(yè)巖和硅質(zhì)頁(yè)巖組成，有機(jī)質(zhì)含量高，熱演化程度高，為頁(yè)巖氣的生成提供了充足的烴源。TheLowerPaleozoicshaleformationsintheSichuanBasinandsurroundingareasarethickandwidelydistributed,withagoodfoundationforshalegasreservoirs.Theseshaleformationsaremainlycomposedoforganicrichblackshale,carbonaceousshale,andsiliceousshale,withhighorganicmattercontentandhighdegreeofthermalevolution,providingsufficienthydrocarbonsourcesforthegenerationofshalegas.四川盆地及周緣地區(qū)的構(gòu)造活動(dòng)強(qiáng)烈，多期次的構(gòu)造運(yùn)動(dòng)使得頁(yè)巖層系經(jīng)歷了強(qiáng)烈的壓實(shí)和改造，形成了大量的微裂縫和納米級(jí)孔隙，為頁(yè)巖氣的儲(chǔ)集和運(yùn)移提供了良好的通道和空間。ThetectonicactivityintheSichuanBasinandsurroundingareasisstrong,andmultipleperiodsoftectonicmovementshaveledtostrongcompactionandtransformationofshalelayers,formingalargenumberofmicrocracksandnanopores,providinggoodchannelsandspaceforthestorageandmigrationofshalegas.四川盆地及周緣地區(qū)的熱演化程度高，地溫梯度大，使得頁(yè)巖層系的熱成熟度較高，有利于頁(yè)巖氣的生成和聚集。該地區(qū)的蓋層條件良好，能夠有效地封蓋頁(yè)巖氣，防止其逸散。TheSichuanBasinanditssurroundingareashaveahighdegreeofthermalevolutionandalargegeothermalgradient,whichleadstoahigherthermalmaturityofshaleformationsandisconducivetothegenerationandaccumulationofshalegas.Thecaprockconditionsinthisareaaregood,whichcaneffectivelysealshalegasandpreventitsescape.四川盆地及周緣地區(qū)的下古生界頁(yè)巖氣藏具有儲(chǔ)層厚度大、有機(jī)質(zhì)含量高、構(gòu)造改造強(qiáng)烈、熱演化程度高和蓋層條件良好等地質(zhì)特征，這使得該地區(qū)成為頁(yè)巖氣勘探開發(fā)的重要領(lǐng)域。TheLowerPaleozoicshalegasreservoirsintheSichuanBasinanditssurroundingareashavegeologicalcharacteristicssuchaslargereservoirthickness,highorganicmattercontent,strongstructuraltransformation,highdegreeofthermalevolution,andgoodcaprockconditions,makingtheareaanimportantareaforshalegasexplorationanddevelopment.三、深埋藏對(duì)頁(yè)巖氣儲(chǔ)層的影響Theimpactofdeepburialonshalegasreservoirs四川盆地及周緣地區(qū)下古生界頁(yè)巖氣儲(chǔ)層經(jīng)歷了復(fù)雜的深埋藏過(guò)程，這一地質(zhì)作用對(duì)頁(yè)巖氣儲(chǔ)層產(chǎn)生了深遠(yuǎn)的影響。深埋藏作用不僅改變了頁(yè)巖的物理和化學(xué)性質(zhì)，還影響了頁(yè)巖氣的生成、運(yùn)移和聚集。TheLowerPaleozoicshalegasreservoirsintheSichuanBasinandsurroundingareashaveundergonecomplexdeepburialprocesses,whichhavehadaprofoundimpactonshalegasreservoirs.Deepburialnotonlychangesthephysicalandchemicalpropertiesofshale,butalsoaffectsthegeneration,migration,andaccumulationofshalegas.深埋藏作用導(dǎo)致了頁(yè)巖的壓實(shí)和致密化。隨著埋藏深度的增加，上覆地層的壓力逐漸增大，頁(yè)巖顆粒間的排列更加緊密，孔隙度和滲透率顯著降低。這種壓實(shí)作用限制了頁(yè)巖氣的儲(chǔ)存空間，同時(shí)也增加了頁(yè)巖氣運(yùn)移的難度。Thedeepburialprocessleadstothecompactionanddensificationofshale.Astheburialdepthincreases,thepressureoftheoverlyingstratagraduallyincreases,thearrangementofshaleparticlesbecomesmorecompact,andtheporosityandpermeabilitysignificantlydecrease.Thiscompactioneffectlimitsthestoragespaceofshalegasandalsoincreasesthedifficultyofshalegasmigration.深埋藏作用引發(fā)了頁(yè)巖的化學(xué)變化。在高溫高壓的環(huán)境下，頁(yè)巖中的有機(jī)質(zhì)發(fā)生熱演化，生成了更多的烴類氣體。同時(shí)，頁(yè)巖中的礦物雜質(zhì)也可能發(fā)生溶解和再沉淀，改變了頁(yè)巖的礦物組成和微觀結(jié)構(gòu)。這些化學(xué)變化不僅影響了頁(yè)巖氣的生成，還影響了頁(yè)巖氣的賦存狀態(tài)。Deepburialhastriggeredchemicalchangesinshale.Underhightemperatureandpressure,theorganicmatterinshaleundergoesthermalevolution,generatingmorehydrocarbongases.Meanwhile,mineralimpuritiesinshalemayalsoundergodissolutionandreprecipitation,alteringthemineralcompositionandmicrostructureofshale.Thesechemicalchangesnotonlyaffectthegenerationofshalegas,butalsotheoccurrencestateofshalegas.深埋藏作用還導(dǎo)致了頁(yè)巖氣的運(yùn)移和聚集。隨著埋藏深度的增加，頁(yè)巖中的溫度逐漸升高，頁(yè)巖氣分子的熱運(yùn)動(dòng)速度加快，使得頁(yè)巖氣更容易從源巖中運(yùn)移出來(lái)。深埋藏作用形成的構(gòu)造圈閉和地層圈閉也為頁(yè)巖氣的聚集提供了有利條件。Deepburialalsoleadstothemigrationandaccumulationofshalegas.Astheburialdepthincreases,thetemperatureinshalegraduallyrises,andthethermalmovementspeedofshalegasmoleculesaccelerates,makingiteasierforshalegastomigrateoutofthesourcerock.Thestructuralandstratigraphictrapsformedbydeepburialalsoprovidefavorableconditionsfortheaccumulationofshalegas.深埋藏作用對(duì)四川盆地及周緣地區(qū)下古生界頁(yè)巖氣儲(chǔ)層的影響是多方面的。它改變了頁(yè)巖的物理和化學(xué)性質(zhì)，影響了頁(yè)巖氣的生成、運(yùn)移和聚集，從而對(duì)該地區(qū)的頁(yè)巖氣勘探和開發(fā)產(chǎn)生了重要的影響。因此，在深入了解和研究深埋藏作用的基礎(chǔ)上，我們可以更好地預(yù)測(cè)和評(píng)價(jià)該地區(qū)的頁(yè)巖氣資源潛力，為未來(lái)的頁(yè)巖氣勘探和開發(fā)提供科學(xué)依據(jù)。TheimpactofdeepburialontheLowerPaleozoicshalegasreservoirsintheSichuanBasinandsurroundingareasismultifaceted.Itchangesthephysicalandchemicalpropertiesofshale,affectingthegeneration,migration,andaccumulationofshalegas,therebyhavingasignificantimpactonshalegasexplorationanddevelopmentintheregion.Therefore,basedonadeepunderstandingandstudyofdeepburialprocesses,wecanbetterpredictandevaluatetheshalegasresourcepotentialintheregion,providingscientificbasisforfutureshalegasexplorationanddevelopment.四、強(qiáng)改造對(duì)頁(yè)巖氣儲(chǔ)層的影響Theimpactofstrongtransformationonshalegasreservoirs四川盆地及周緣地區(qū)下古生界頁(yè)巖氣儲(chǔ)層經(jīng)歷了強(qiáng)烈的構(gòu)造改造作用，這些改造作用對(duì)頁(yè)巖氣的形成、分布和儲(chǔ)集性能產(chǎn)生了深遠(yuǎn)的影響。TheLowerPaleozoicshalegasreservoirsintheSichuanBasinandsurroundingareashaveundergonestrongstructuraltransformation,whichhashadaprofoundimpactontheformation,distribution,andreservoirperformanceofshalegas.強(qiáng)改造作用使得頁(yè)巖儲(chǔ)層產(chǎn)生了大量的裂縫和微裂縫，為頁(yè)巖氣的聚集和運(yùn)移提供了良好的通道。這些裂縫不僅增加了儲(chǔ)層的連通性，還有利于頁(yè)巖氣的擴(kuò)散和滲流，從而提高了頁(yè)巖氣的可采性。Thestrongtransformationeffecthascausedalargenumberoffracturesandmicrocracksinshalereservoirs,providingagoodchannelfortheaccumulationandmigrationofshalegas.Thesecracksnotonlyincreasetheconnectivityofthereservoir,butalsofacilitatethediffusionandseepageofshalegas,therebyimprovingtherecoverabilityofshalegas.強(qiáng)改造作用導(dǎo)致了頁(yè)巖儲(chǔ)層的物性發(fā)生了顯著變化。在構(gòu)造擠壓和拉伸作用下，頁(yè)巖的脆性增加，孔隙度和滲透率得到了改善。這種物性的變化有利于頁(yè)巖氣的儲(chǔ)集和滲流，使得頁(yè)巖氣在儲(chǔ)層中的賦存狀態(tài)更加穩(wěn)定。Thestrongtransformationeffecthasledtosignificantchangesinthephysicalpropertiesofshalereservoirs.Undertheactionoftectoniccompressionandtension,thebrittlenessofshaleincreases,andtheporosityandpermeabilityareimproved.Thischangeinphysicalpropertiesisbeneficialforthestorageandseepageofshalegas,makingtheoccurrencestateofshalegasinthereservoirmorestable.強(qiáng)改造作用還對(duì)頁(yè)巖儲(chǔ)層的含氣性產(chǎn)生了影響。在構(gòu)造改造過(guò)程中，頁(yè)巖儲(chǔ)層的溫度和壓力條件發(fā)生了變化，這直接影響了頁(yè)巖氣的生成和賦存。高溫高壓環(huán)境有利于頁(yè)巖氣的生成和保存，而構(gòu)造改造過(guò)程中的溫度壓力條件變化則可能導(dǎo)致頁(yè)巖氣的逸散和重新分布。Thestrongtransformationeffectalsohasanimpactonthegascontentofshalereservoirs.Duringtheprocessofstructuraltransformation,thetemperatureandpressureconditionsofshalereservoirshavechanged,whichdirectlyaffectsthegenerationandoccurrenceofshalegas.Hightemperatureandhighpressureenvironmentsareconducivetothegenerationandpreservationofshalegas,whilechangesintemperatureandpressureconditionsduringstructuraltransformationmayleadtotheescapeandredistributionofshalegas.強(qiáng)改造作用對(duì)四川盆地及周緣地區(qū)下古生界頁(yè)巖氣儲(chǔ)層的影響是多方面的。它不僅改善了儲(chǔ)層的物性，提高了頁(yè)巖氣的可采性，還影響了頁(yè)巖氣的生成和賦存狀態(tài)。因此，在頁(yè)巖氣勘探和開發(fā)過(guò)程中，需要充分考慮強(qiáng)改造作用的影響，制定合理的勘探策略和開發(fā)方案。TheimpactofstrongtransformationontheLowerPaleozoicshalegasreservoirsintheSichuanBasinandsurroundingareasismultifaceted.Itnotonlyimprovesthephysicalpropertiesofthereservoirandenhancestherecoverabilityofshalegas,butalsoaffectsthegenerationandoccurrencestatusofshalegas.Therefore,intheprocessofshalegasexplorationanddevelopment,itisnecessarytofullyconsidertheimpactofstrongtransformationandformulatereasonableexplorationstrategiesanddevelopmentplans.五、四川盆地及周緣下古生界頁(yè)巖氣深埋藏強(qiáng)改造獨(dú)特地質(zhì)作用的綜合研究AcomprehensivestudyontheuniquegeologicalprocessesofdeepburialandstrongtransformationofLowerPaleozoicshalegasintheSichuanBasinanditssurroundingareas四川盆地及其周邊地區(qū)下古生界頁(yè)巖氣的深埋藏和強(qiáng)改造獨(dú)特地質(zhì)作用一直是國(guó)內(nèi)外地質(zhì)學(xué)者和能源勘探領(lǐng)域關(guān)注的焦點(diǎn)。綜合前人研究成果，結(jié)合最新的地質(zhì)勘探資料和技術(shù)手段，我們對(duì)這一地區(qū)的地質(zhì)作用進(jìn)行了深入的綜合研究。TheuniquegeologicalprocessesofdeepburialandstrongtransformationofLowerPaleozoicshalegasintheSichuanBasinanditssurroundingareashavealwaysbeenthefocusofattentionfordomesticandforeigngeologistsandenergyexplorationfields.Basedonpreviousresearchresultsandthelatestgeologicalexplorationdataandtechnicalmeans,wehaveconductedin-depthcomprehensiveresearchonthegeologicalprocessesinthisregion.在地質(zhì)作用方面，四川盆地及周緣的下古生界頁(yè)巖經(jīng)歷了多期的構(gòu)造運(yùn)動(dòng)，包括印支運(yùn)動(dòng)、燕山運(yùn)動(dòng)和喜馬拉雅運(yùn)動(dòng)等，這些構(gòu)造運(yùn)動(dòng)導(dǎo)致了頁(yè)巖的深埋藏和強(qiáng)改造。深埋藏作用使頁(yè)巖在地下深處經(jīng)歷了高溫高壓的環(huán)境，頁(yè)巖的物理和化學(xué)性質(zhì)發(fā)生了顯著變化，如有機(jī)質(zhì)的成熟度和熱演化程度增加，孔隙度和滲透率降低等。強(qiáng)改造作用則主要表現(xiàn)為頁(yè)巖中的裂縫和斷層發(fā)育，這些裂縫和斷層為頁(yè)巖氣的運(yùn)移和聚集提供了有利條件。Intermsofgeologicalprocesses,theLowerPaleozoicshaleintheSichuanBasinanditssurroundingareashasundergonemultipletectonicmovements,includingtheIndosinian,Yanshan,andHimalayanmovements,whichhaveledtodeepburialandstrongalterationofshale.Deepburialcausesshaletoundergoahigh-temperatureandhigh-pressureenvironmentdeepunderground,resultinginsignificantchangesinitsphysicalandchemicalproperties,suchasincreasedmaturityandthermalevolutionoforganicmatter,decreasedporosityandpermeability.Thestrongtransformationeffectismainlymanifestedinthedevelopmentoffracturesandfaultsinshale,whichprovidefavorableconditionsforthemigrationandaccumulationofshalegas.在頁(yè)巖氣成藏方面，深埋藏和強(qiáng)改造作用共同促進(jìn)了頁(yè)巖氣的生成和聚集。深埋藏作用使頁(yè)巖中的有機(jī)質(zhì)達(dá)到成熟和過(guò)成熟階段，產(chǎn)生了大量的烴類氣體。而強(qiáng)改造作用形成的裂縫和斷層則為這些氣體提供了運(yùn)移通道，使氣體得以聚集形成頁(yè)巖氣藏。Intermsofshalegasreservoirformation,deepburialandstrongtransformationjointlypromotethegenerationandaccumulationofshalegas.Thedeepburialprocesscausestheorganicmatterinshaletoreachmatureandovermaturestages,producingalargeamountofhydrocarbongases.Thecracksandfaultsformedbystrongtransformationprovidemigrationchannelsforthesegases,allowingthemtoaccumulateandformshalegasreservoirs.我們還注意到四川盆地及周緣地區(qū)的頁(yè)巖氣藏具有多層系、多類型、多期次的特點(diǎn)。這主要得益于該地區(qū)復(fù)雜的地質(zhì)構(gòu)造和多樣的沉積環(huán)境。多層系的特點(diǎn)使得頁(yè)巖氣藏具有較大的資源量和較好的開發(fā)潛力；多類型的頁(yè)巖氣藏則為我們提供了更多的開發(fā)模式和選擇；多期次的成藏過(guò)程則為我們揭示了頁(yè)巖氣藏的演化和分布規(guī)律。WealsonoticedthatshalegasreservoirsintheSichuanBasinandsurroundingareashavethecharacteristicsofmultiplelayers,types,andstages.Thisismainlyduetothecomplexgeologicalstructureanddiversesedimentaryenvironmentintheregion.Thecharacteristicsofmulti-layeredsystemsmakeshalegasreservoirshavealargeamountofresourcesandgooddevelopmentpotential;Multipletypesofshalegasreservoirsprovideuswithmoredevelopmentmodelsandchoices;Themulti-stagereservoirformationprocessrevealstheevolutionanddistributionpatternsofshalegasreservoirstous.四川盆地及周緣下古生界頁(yè)巖氣的深埋藏和強(qiáng)改造獨(dú)特地質(zhì)作用對(duì)該地區(qū)頁(yè)巖氣的生成、運(yùn)移和聚集具有重要影響。通過(guò)綜合研究這些地質(zhì)作用及其與頁(yè)巖氣成藏的關(guān)系，我們可以更深入地認(rèn)識(shí)這一地區(qū)頁(yè)巖氣的成藏規(guī)律和分布特征，為后續(xù)的頁(yè)巖氣勘探和開發(fā)提供重要的科學(xué)依據(jù)和技術(shù)支撐。ThedeepburialandstrongtransformationofshalegasintheLowerPaleozoicintheSichuanBasinanditssurroundingareashaveasignificantimpactonthegeneration,migration,andaccumulationofshalegasintheregion.Bycomprehensivelystudyingthesegeologicalprocessesandtheirrelationshipwithshalegasreservoirformation,wecanhaveadeeperunderstandingofthereservoirformationlawsanddistributioncharacteristicsofshalegasinthisregion,providingimportantscientificbasisandtechnicalsupportforsubsequentshalegasexplorationanddevelopment.六、結(jié)論Conclusion通過(guò)對(duì)四川盆地及周緣下古生界頁(yè)巖氣深埋藏強(qiáng)改造獨(dú)特地質(zhì)作用的深入研究，我們得出以下幾點(diǎn)Throughin-depthresearchontheuniquegeologicalprocessesofdeepburialandstrongtransformationofLowerPaleozoicshalegasintheSichuanBasinanditssurroundingareas,wehavecometothefollowingconclusions:四川盆地及周緣地區(qū)的頁(yè)巖氣儲(chǔ)層經(jīng)歷了復(fù)雜的深埋藏和強(qiáng)改造過(guò)程，這些過(guò)程對(duì)頁(yè)巖氣的生成、運(yùn)移和聚集產(chǎn)生了重要影響。深埋藏作用使得頁(yè)巖儲(chǔ)層在高壓高溫條件下發(fā)生了一系列的物理和化學(xué)變化，包括有機(jī)質(zhì)熱演化、孔隙結(jié)構(gòu)改造和儲(chǔ)層物性改善等，這為頁(yè)巖氣的生成和聚集提供了有利條件。強(qiáng)改造作用則通過(guò)斷裂活動(dòng)、巖漿侵入等方式改變了頁(yè)巖儲(chǔ)層的空間展布和連通性，為頁(yè)巖氣的運(yùn)移和聚集提供了通道和場(chǎng)所。TheshalegasreservoirsintheSichuanBasinandsurroundingareashaveundergonecomplexdeepburialandstrongtransformationprocesses,whichhavehadasignificantimpactonthegeneration,migration,andaccumulationofshalegas.Deepburialcausesaseriesofphysicalandchemicalchangesinshalereservoirsunderhigh-pressureandhigh-temperatureconditions,includingorganicmatterthermalevolution,porestructuremodification,andreservoirphysicalpropertyimprovement,whichprovidefavorableconditionsforthegenerationandaccumulationofshalegas.Thestrongtransformationeffectchangesthespatialdistributionandconnectivityofshalereservoirsthroughfaultacti