本文選題：遼河盆地 + 東部凹陷��； 參考：《吉林大學(xué)》2016年博士論文

【摘要】：本文基于鉆井、物性測(cè)試、油氣地球化學(xué)測(cè)試、測(cè)井及地震等資料,利用火山地質(zhì)學(xué)、地震火山地層學(xué)、石油地質(zhì)學(xué)等多學(xué)科理論與方法,從火山巖儲(chǔ)層刻畫(huà)到成藏規(guī)律進(jìn)行綜合研究。研究?jī)?nèi)容主要包括火山巖地質(zhì)-地球物理識(shí)別,火山巖相地震刻畫(huà)及分布規(guī)律,火山巖相儲(chǔ)層物性及非均質(zhì)性及火山巖成藏4部分�；鹕綆r地質(zhì)地球物理識(shí)別：依據(jù)鉆井、測(cè)井及地震資料,對(duì)本區(qū)火山巖巖性、火山巖相、火山巖相-測(cè)井相、火山巖相-地震相發(fā)育特征及識(shí)別標(biāo)志進(jìn)行研究；火山巖相地震刻畫(huà)及分布規(guī)律：依據(jù)火山地層界面,建立火山地層格架,在地層格架限定下,利用中基性火山巖鉆井約束地震巖相刻畫(huà)方法,對(duì)本區(qū)火山巖體進(jìn)行火山巖相地震刻畫(huà),并總結(jié)火山巖體內(nèi)部火山巖相空間展布規(guī)律；火山巖相儲(chǔ)層物性及非均質(zhì)性：在巖性成巖作用、儲(chǔ)集空間、儲(chǔ)層物性分析的基礎(chǔ)上,通過(guò)各類巖相/亞相內(nèi)的巖性組合規(guī)律研究,建立了不同巖相-亞相與儲(chǔ)層物性-非均質(zhì)性定性關(guān)系；火山巖成藏規(guī)律：“生、儲(chǔ)、蓋”條件研究的基礎(chǔ)上,通過(guò)凹陷和區(qū)塊兩個(gè)尺度,對(duì)受走滑改造的多層系的中基性火山巖油氣藏成藏要素進(jìn)行分析,即“生、儲(chǔ)、蓋”時(shí)空配置關(guān)系、火山巖儲(chǔ)層非均質(zhì)性,地層產(chǎn)狀及側(cè)向封擋類型等,進(jìn)而總結(jié)了東部凹陷火山巖油氣藏成藏規(guī)律。1.遼河盆地東部凹陷火山巖地質(zhì)-地球物理識(shí)別通過(guò)巖心描述及薄片觀察,對(duì)遼河盆地東部凹陷新生代主要發(fā)育的4類11亞類火山巖巖性以及5相14亞相火山巖的礦物、結(jié)構(gòu)、構(gòu)造進(jìn)行了詳細(xì)描述,并總結(jié)了各類巖性、巖相、亞相的地質(zhì)識(shí)別標(biāo)志。通過(guò)巖心標(biāo)定常規(guī)測(cè)井曲線,總結(jié)巖相/亞相-測(cè)井相識(shí)別標(biāo)志,共識(shí)別出火山通道和爆發(fā)相、溢流相、侵出相的測(cè)井相特征,其中復(fù)合熔巖流亞相、板狀熔巖流亞相、玻質(zhì)碎屑巖亞相可進(jìn)一步識(shí)別到亞相。①爆發(fā)相整體以箱形或微齒化-近平直曲線的低RLLD、低-中CNL、低-中DEN、中DT為典型特征,其頂?shù)捉佑|關(guān)系多為突變接觸；②復(fù)合熔巖流亞相整體以中-高振幅齒化的RLLD、CNL、 DEN、DT為典型特征；③板狀熔巖流亞相整體以鐘形中-高RLLD、低-中CNL、高DEN、低-中DT為典型特征,其頂部多為漸變接觸,底部多為突變接觸；④玻質(zhì)碎屑巖亞相以箱形或微齒化-近平直曲線的低RLLD、高CNL、低-中DEN、中DT為典型特征,其頂?shù)捉佑|關(guān)系多為突變接觸,厚度通常較厚；⑤侵出相整體以鐘形中-高RLLD、低CNL、中DEN、低-中DT為典型特征,其頂部多為漸變接觸,底部多為突變接觸。以測(cè)井曲線為橋梁,利用鉆井標(biāo)定地震,識(shí)別出地震反射特征較為明顯的5種火山巖相,其中,火山頸亞相、次火山巖亞相、玻質(zhì)碎屑巖亞相和板狀／復(fù)合熔巖流亞相可識(shí)別到亞相。①火山頸亞相：輪廓多呈團(tuán)塊狀、管狀(縱橫比中等-高),內(nèi)部多呈雜亂反射結(jié)構(gòu),并以中-弱振幅,中-弱頻,連續(xù)性中-差等為特征；②次火山巖亞相：輪廓多呈板狀、透鏡狀(縱橫比低),內(nèi)部多呈平行-亞平行反射結(jié)構(gòu),并以強(qiáng)振幅,中-高頻,連續(xù)性好-中等為特征；③侵出相：輪廓多呈透鏡狀、丘狀(縱橫比中等),內(nèi)部多呈波狀、雜亂反射結(jié)構(gòu),并以中-低頻,中-弱振幅,連續(xù)性中-差等為特征。④爆發(fā)相：輪廓多呈板狀、席狀、楔狀(縱橫比低),內(nèi)部多呈平行-亞平行反射結(jié)構(gòu),并以中-強(qiáng)振幅,中-高頻,連續(xù)性好等為特征；⑤玻質(zhì)碎屑巖亞相：輪廓多呈充填狀(縱橫比低-中等),內(nèi)部多呈雜亂、波狀反射結(jié)構(gòu),并以中-弱振幅,中-低頻,連續(xù)性中-差等為特征；⑥板狀／復(fù)合熔巖流亞相：輪廓多呈席狀(縱橫比低),內(nèi)部多呈平行-亞平行反射結(jié)構(gòu),并以強(qiáng)振幅,中-高頻,連續(xù)性好等為特征。⑦火山沉積相：輪廓多呈席狀(縱橫比低),內(nèi)部多呈平行-亞平行反射結(jié)構(gòu),并以中-強(qiáng)振幅,中-高頻,連續(xù)性好-中等為特征。上述地震反射特征是火山堆積物的巖性組合及其疊置方式的綜合響應(yīng)。2.遼河盆地東部凹陷火山巖相地震刻畫(huà)及分布規(guī)律通過(guò)火山地層界面,將遼河盆地東部凹陷新生界火山地層劃分為4旋回15期,底部旋回一和頂部旋回四為玄武巖,顯示火山噴發(fā)以基性巖開(kāi)始,又以基性巖結(jié)束；中部的旋回二和三均為玄武巖→粗面巖→玄武巖的巖性序列,構(gòu)成本區(qū)火山地層的主體�；鹕綆r受北東向主干斷裂控制,最大厚度位于斷裂帶附近；總體來(lái)看東部凹陷中南段新生界火山巖分布范圍呈現(xiàn)早期(期次1-2)全區(qū)分布,后期(期次3-15)由北向南的遷移特征,而火山巖厚度中心呈早期(期次1-7)由南北兩端向中心遷移,后期(期次7-15)由中心向南遷移。東部凹陷中南段新生界火山巖分布范圍呈現(xiàn)早期(期次1-2)全區(qū)分布,末期(期次15)分布局限,中期(期次3-14)表現(xiàn)為噴發(fā)中心由北向南依次遷移特征后期,而火山巖厚度中心呈早期(期次1-7)由南北兩端向中心遷移,后期(期次7-15)由中心向南遷移。通過(guò)單井和連井的地質(zhì)、測(cè)井、地震綜合研究,識(shí)別中基性火山巖三級(jí)火山地層界面(期次→機(jī)構(gòu)→巖相),揭示有利勘探相帶。期次內(nèi)劃分火山機(jī)構(gòu)-地震相單元,火山機(jī)構(gòu)內(nèi)劃分火山巖相-地震相單元。以單井點(diǎn)為基礎(chǔ),通過(guò)連井地震剖面刻畫(huà)火山機(jī)構(gòu)-巖相分布模式,以期次為單元提取相干屬性識(shí)別火山巖體(疊置火山機(jī)構(gòu)),提取波形分類屬性識(shí)別火山機(jī)構(gòu)及火山巖相,建立點(diǎn)-線-面火山巖相-地震相單元關(guān)系。火山巖相地震識(shí)別方法和流程可概括為以下5步：①單井火山地層界面(期次、巖相)識(shí)別；②單井火山地層界面(期次、巖相)合成記錄標(biāo)定,建立井震聯(lián)系；③地質(zhì)連井剖面火山地層界面(期次、巖相)對(duì)比；④地震連井剖面三級(jí)火山地層界面(期次→機(jī)構(gòu)→巖相)識(shí)別,并以此為基礎(chǔ),建立火山機(jī)構(gòu)-巖相分布模式；⑤在單井、地震連井火山巖相解釋標(biāo)定下,以期次為單元提取相干屬性識(shí)別火山巖體(疊置火山機(jī)構(gòu)),提取波形屬性識(shí)別火山機(jī)構(gòu)及火山巖相,單井、連井、平面三者相互約束和印證,實(shí)現(xiàn)火山巖相平面展布刻畫(huà)�；诩t星-小龍灣火山巖體內(nèi)火山巖相地震刻畫(huà)結(jié)果,分析遼河盆地東部凹陷斷陷期火山巖相空間展布規(guī)律,斷陷期沙三段主要發(fā)育S3q1、S3q2、S3q3、S3q4、 S3q5火山巖,主要存在以下幾方面規(guī)律：S3q1、S3q5主要受駕掌寺斷裂控制,S3q2、S3q3、S3q4主要受駕掌寺和駕東斷裂共同控制；S3q1、S3q5主要以裂隙式噴發(fā)為主,S3q3以中心式噴發(fā)為主,S3q4中心式和裂隙式噴發(fā)均有；S3q2發(fā)育最厚,厚度達(dá)上千米,S3q3、S3q4、S3q5厚度中等,S3q1厚度最�。籗3q1、 S3q5相序主要為火山通道相→溢流相→火山沉積相,S3q2、S3q4相序主要為火山通道相(→爆發(fā)相)→溢流相→火山沉積相,S3q3相序主要為火山通道相(→爆發(fā)相)→侵出相(→溢流相)→火山沉積相。3.遼河盆地東部凹陷火山巖相與儲(chǔ)層物性-非均質(zhì)性定性關(guān)系通過(guò)巖心和薄片觀察,對(duì)遼河盆地東部凹陷火山巖成巖作用進(jìn)行研究。依據(jù)成巖作用方式將早期成巖作用分為冷凝固結(jié)成巖作用和壓實(shí)固結(jié)成巖作用兩大類,其中冷凝固結(jié)成巖作用包括揮發(fā)分逸出作用、冷凝收縮作用、淬火作用、脫�；饔谩呔д炎饔�、準(zhǔn)同生期熱液沉淀作用及熔結(jié)作用等7類；壓實(shí)固結(jié)成巖作用包括壓實(shí)膠結(jié)作用1類,共8類成巖作用。在8類成巖作用中,揮發(fā)分逸出作用、冷凝收縮作用、淬火作用、脫玻化作用及斑晶炸裂作用對(duì)儲(chǔ)層原生孔隙的形成有利；晚期成巖作用包括充填作用、溶解作用、構(gòu)造作用、隱爆角礫巖化作用、膠結(jié)作用及機(jī)械壓實(shí)壓溶作用等6類,其中溶解作用、構(gòu)造作用和隱爆角礫巖化作用對(duì)儲(chǔ)層原生儲(chǔ)集空間具有改善作用,而充填作用、膠結(jié)作用和機(jī)械壓實(shí)壓溶作用會(huì)使儲(chǔ)層原生儲(chǔ)集空間變差。通過(guò)巖心和薄片觀察,對(duì)遼河盆地東部凹陷火山巖儲(chǔ)集空間類型進(jìn)行研究。原生儲(chǔ)集空間共識(shí)別出6類、10亞類,主要包括氣孔(氣孔、杏仁體內(nèi)孔)、收縮孔(脫玻化孔、杏仁體收縮孔)、收縮縫(網(wǎng)狀收縮縫、水平節(jié)理縫、柱狀節(jié)理縫)、解理縫、碎裂縫以及格架孔(粒間孔)；火山巖次生儲(chǔ)集空間共識(shí)別出5類、11亞類,主要包括溶蝕孔(晶內(nèi)溶蝕孔、晶間溶蝕孔、填隙物溶蝕孔)、溶蝕縫(解理溶蝕縫、收縮溶蝕縫、碎裂溶蝕縫、隱爆溶蝕縫、構(gòu)造溶蝕縫)、構(gòu)造縫、隱爆縫以及壓溶縫。通過(guò)各類巖性成巖作用和儲(chǔ)集空間分析,結(jié)合物性資料,對(duì)遼河盆地東部凹陷主要發(fā)育的10種巖性進(jìn)行了儲(chǔ)層物性研究,研究表明：氣孔玄武巖、角礫化玄武巖、角礫化粗面巖、火山集塊巖、火山角礫巖、沉火山角礫巖,凝灰質(zhì)砂巖儲(chǔ)層物性好；凝灰?guī)r儲(chǔ)層物性中等；致密玄武巖、致密粗面巖儲(chǔ)層物性差。在巖性物性分析的基礎(chǔ)上,通過(guò)巖相／亞相內(nèi)巖性組合規(guī)律研究,分析了遼河盆地東部凹陷主要發(fā)育的5相13亞相與儲(chǔ)層物性-非均質(zhì)性定性關(guān)系,研究表明：通常由單一巖性組成的亞相-巖相縱向和橫向非均質(zhì)性弱,如火山頸亞相、火山碎屑流亞相、玻質(zhì)碎屑巖亞相,物性整體好；由單一巖性層狀分布組成的亞相-巖相縱向非均質(zhì)性中等,橫向非均質(zhì)性弱,如空落亞相、熱基浪亞相、再搬運(yùn)火山碎屑沉積亞相、含外碎屑火山沉積亞相,物性中等；由多種物性差異較大巖性沿層狀分布組成的亞相-巖相縱向非均質(zhì)性強(qiáng),橫向非均質(zhì)性弱,如板狀熔巖流亞相、侵出相,物性整體中等；由多種物性差異較大的巖性在空間上交替分布組成的亞相-巖相縱向和橫向非均質(zhì)性強(qiáng),如復(fù)合熔巖流亞相,物性整體差；隱爆角礫亞相非均質(zhì)性受原巖控制。4.遼河盆地東部凹陷火山巖油氣成藏規(guī)律通過(guò)油源對(duì)比,確定了紅星-小龍灣火山巖油氣藏油氣源于走滑斷裂(駕掌寺斷裂)西側(cè)烴源巖。從凹陷尺度,以東部凹陷為研究對(duì)象,通過(guò)東部凹陷構(gòu)造演化分析,研究“生、儲(chǔ)、蓋”時(shí)空配置關(guān)系,研究表明：東部凹陷斷陷期(沙三段)形成的火山和沉積地層,斷陷期后(東營(yíng)期為主)受走滑改造,火山和沉積地層沿走滑斷裂在東營(yíng)時(shí)期平面上側(cè)相匹配,形成了以側(cè)生側(cè)儲(chǔ)成藏模式為主的火山巖油氣藏。從區(qū)塊尺度,以火山巖體為研究對(duì)象,通過(guò)火山巖體與烴源巖縱向匹配關(guān)系及火山巖儲(chǔ)層縱向非均質(zhì)性,研究油氣縱向分布規(guī)律。在“生、儲(chǔ)、蓋”關(guān)系時(shí)空匹配前提下,火山巖體與烴源巖縱向匹配關(guān)系：生與儲(chǔ)和蓋直接匹配,配置關(guān)系最好,油源供給最好；生位于儲(chǔ)和蓋下部,配置關(guān)系較好,油源供給中等；生位于儲(chǔ)和蓋上部,配置關(guān)系最差,油源不供給。火山巖儲(chǔ)層縱向非均質(zhì)性：通過(guò)火山巖相序及縱向非均質(zhì)性,總結(jié)火山巖儲(chǔ)層與蓋層分布模式,沙三段三個(gè)期次儲(chǔ)層和蓋層分布模式如下,S3q3儲(chǔ)層自下而上依次為火山碎屑巖+外帶+中帶、中帶+外帶+再搬運(yùn)火山碎屑沉積／含外碎屑火山沉積,蓋層主要為中帶；S3q4和S3q5儲(chǔ)層白下而上依次為火山碎屑流+板狀熔巖流底界面、板狀熔巖流內(nèi)流動(dòng)單元頂?shù)捉缑妗鍫钊蹘r流頂界面+復(fù)合熔巖流底界面、復(fù)合熔巖流頂界面+再搬運(yùn)火山碎屑沉積／含外碎屑火山沉積,蓋層自下而上依次為板狀熔巖流內(nèi)流動(dòng)單元內(nèi)部(流動(dòng)單元頂?shù)捉缑嬷g)、板狀熔巖流內(nèi)流動(dòng)單元內(nèi)部(流動(dòng)單元頂?shù)捉缑嬷g)、復(fù)合熔巖流內(nèi)部(頂?shù)捉缑嬷g)。從區(qū)塊尺度,以火山巖體為研究對(duì)象,通過(guò)地層產(chǎn)狀及火山巖儲(chǔ)層橫向非均質(zhì)性,研究油氣橫向分布規(guī)律。生、儲(chǔ)、蓋關(guān)系時(shí)空匹配前提下,地層產(chǎn)狀：地層產(chǎn)狀主要分地層傾向和地層傾角兩方面對(duì)油氣藏進(jìn)行控制,地層傾向控制作用體現(xiàn)在東傾產(chǎn)狀地層整體阻礙油氣運(yùn)移,西傾產(chǎn)狀地層整體有助于油氣運(yùn)移；地層傾角控制作用體現(xiàn)在東傾地層傾角越大油氣運(yùn)移距離越小,西傾地層傾角越大油氣運(yùn)移距離越大。另外,地層產(chǎn)狀隨著鉆井距離烴源巖的距離變小對(duì)油氣的控制作用逐漸變小,當(dāng)距離小于1km左右時(shí),地層產(chǎn)狀作用則不影響油氣成藏�；鹕綆r儲(chǔ)層橫向非均質(zhì)性：火山巖相橫向非均質(zhì)性越弱,油氣橫向運(yùn)移距離越大,火山巖相非均質(zhì)性越強(qiáng),油氣橫向運(yùn)移距離越小,以復(fù)合熔巖流為主的S3q4、 S3q5橫向非均質(zhì)性強(qiáng)于S3q3。從區(qū)塊尺度,以火山巖體為研究對(duì)象,通過(guò)地層產(chǎn)狀和側(cè)向封擋類型,研究油氣藏類型。紅星-小龍灣火山巖體火山地層產(chǎn)狀主要分為東傾地層、西傾地層和近水平地層,由于地層產(chǎn)狀和火山巖相非均質(zhì)性不同,因此其圈閉成因也不同,即側(cè)向封擋類型也不同,從而形成構(gòu)造油氣藏、巖性油氣藏以及構(gòu)造-巖性油氣藏3種油氣藏類型,構(gòu)造油氣藏主要分布在地層產(chǎn)狀以東傾為主的紅星巖體,巖性油氣藏主要分布在地層產(chǎn)狀以近水平／低傾角西傾為主的紅星巖體和小龍灣巖體過(guò)渡處,巖性-構(gòu)造油氣藏主要分布在地層產(chǎn)狀以高傾角西傾為主的小龍灣巖體。
[Abstract]:Based on the data of drilling, physical testing, oil and gas geochemical testing, logging and earthquake, using volcanic geology, seismological stratigraphy, petroleum geology and other multidisciplinary theories and methods, a comprehensive study of the characteristics of volcanic reservoir characterization and reservoir formation is carried out. The main contents of this study include Volcanic Geology Geophysical identification, volcanic facies. Seismic characterization and distribution rules, volcanic lithofacies reservoir physical properties and heterogeneity and volcanic rock formation 4 parts. Volcanic geological geophysical identification: Based on drilling, logging and seismic data, volcanic rock lithology, volcanic facies, volcanic facies logging facies, volcanic facies to geo seismic facies development characteristics and identification marks; volcanic rock Phase seismic portrayal and distribution rule: Based on the volcanic strata interface, a volcanic stratigraphic framework is set up. Under the restriction of the stratigraphic framework, the lithofacies characterization of volcanic rocks in the volcanic rock mass in this area is carried out by using the medium basic volcanic rock drilling constraint seismic facies characterization method, and the spatial distribution law of the volcanic facies in the inner part of the volcanic rock mass is summed up, and the volcanic lithofacies reservoir is summarized. Physical property and heterogeneity: on the basis of lithologic diagenesis, reservoir space and reservoir physical property analysis, the qualitative relationship between different lithofacies and subfacies is studied, and the qualitative relationship between different lithofacies and subfacies and reservoirs is established. Two scales are used to analyze the reservoir forming factors of the middle basic volcanic rocks in the multi-layer system, that is, the spatial and temporal distribution of the "life, reservoir and cover", the heterogeneity of the volcanic reservoir, the formation of the strata and the lateral sealing type, and then the formation of volcanic rocks in the eastern depression,.1., the eastern depression volcano in the Liaohe basin. Rock geology and geophysical identification, through core description and thin slice observation, describes 4 types of 11 subclass volcanic rocks and 5 facies and 14 subfacies of volcanic rocks in the eastern depression of the eastern Liaohe basin, as well as minerals, structures and structures, and summarizes the geological identification marks of various lithology, lithofacies and subfacies. Well curves and the identification marks of lithofacies / subfacies logging facies, a common identification of the volcanic and outburst facies, the overflow phase and the emplacement phase, in which the composite lava flow subfacies, the plate like lava flow subfacies and the glassy clastic subfacies can be further identified as subfacies. CNL, low middle DEN and middle DT are typical features, and the top and bottom contact relationships are mostly abrupt contact; (2) the composite lava flow subfacies is typical characteristic of RLLD, CNL, DEN and DT with medium to high amplitude, and the subfacies of the plate like lava flow is typically characterized by a bell shaped medium high RLLD, low middle CNL, high DEN, and low middle DT. The subfacies of glassy clastic rocks are characterized by low RLLD, high CNL, low middle DEN, and middle DT, which are typical characteristics of box or micro toothed near straight curve. The contact relationship between the top and bottom is mostly abrupt contact, and the thickness is usually thicker. 5. The whole invasion phase is typical of the bell shape high RLLD, low CNL, middle DEN, and low middle DT, and the top is mostly gradual contact, bottom and bottom mostly contact contact, bottom 5 types of volcanic facies are identified by well logging curve, using well logging to identify seismic reflection characteristics. Among them, the subfacies of the volcanic cervix, subvolcanic subfacies, the glassy clastic rock subfacies and the plate / compound lava flow can be identified as subfacies. The transverse ratio is medium to high, and the internal and disorderly reflection structure is characterized by medium to weak amplitude, medium and weak frequency, continuous medium difference and so on; subfacies of subvolcanic rocks are mostly plate shaped, lens like (low vertical and horizontal), parallel subparallel reflection structure in the interior, and characterized by strong amplitude, middle high frequency, good continuity of continuity; 3. It is mostly lenslike and hilly (medium and horizontal ratio). The interior is mostly wavy and disorderly, and is characterized by medium to low frequency, medium to weak amplitude and continuous medium difference. (5) the subfacies of glassy clastic rock: the outline is mostly filling (low to middle level), and the interior is mostly chaotic and wavy reflecting structure, and is characterized by medium to weak amplitude, middle low frequency, continuous medium difference and so on; 6. The plate like / compound lava flow subfacies: the outline is mostly in the shape of the mat (low vertical and horizontal ratio), and the interior is parallel to the parallel subparallel reflection structure, and in strong amplitude, middle High frequency, good continuity and so on. (3) volcanic sedimentary facies: the contour is mostly matting (low vertical and horizontal ratio), and the interior is parallel to sub parallel reflection structure, with medium and strong amplitude, middle high frequency, good continuity and medium. The characteristics of the seismic reflection are the comprehensive response of the lithologic assemblage and superposition of the volcano deposits in the eastern Liaohe basin,.2. The seismic portraying and distribution law of the depression volcanic facies through the volcanic strata interface, the Cenozoic volcanic strata in the eastern sag of the Liaohe basin are divided into 4 cycles, the bottom gyratory one and the top cycle four are basalt, indicating that the volcanic eruption begins with the basic rocks and the basic rocks end, and the middle cycle two and three are basalt and rough rocks in the middle cycle two and three. The lithologic sequence of basalt is the main body of the volcanic strata in this area. The volcanic rocks are controlled by the north east main fault and the maximum thickness is near the fault zone; in general, the distribution range of the Cenozoic volcanic rocks in the middle and south section of the eastern depression is distributed in the early (period 1-2) area, and the later (period 3-15) is migrated from north to south, and the volcanic rocks are thick. In the early stage (period 1-7), the migration of the north and south ends to the center and the later (period 7-15) migrate from the center to the south. The distribution range of the Cenozoic volcanic rocks in the middle and south section of the eastern depression shows the distribution of the early (period 1-2) region, the end (period 15) distribution is limited, and the middle period (period 3-14) shows that the eruption center migrated from north to south to the south, and the fire was in the late period. The center of rock thickness is early (phase 1-7) moving from north and south to central, and later (period 7-15) migrated from the center to south. Through the geological, logging and seismic comprehensive studies of single well and even well, the three volcanic strata interface (phase, mechanism and facies) of the basic volcanic rocks in the middle part of the volcanic rocks is identified, and the favorable exploration facies are revealed. Seismic facies unit, volcanic facies division and seismic phase unit. Based on the single well point, the volcanic rock facies distribution pattern is depicted through the well seismic profile. In order to extract the coherent attributes of the volcanic rock mass (superimposed volcano), the classification of the waveform classification of the volcanic rocks and volcanic facies, and the establishment of point line surface. The relationship between volcanic facies and seismic phase unit. The method and process of seismic identification of volcanic facies can be summarized as following 5 steps: (1) the identification of single well volcanic strata interface (phase, lithofacies); (2) the calibration of the single well volcanic strata interface (phase, lithofacies) synthesis record and the establishment of well seismic contact; (3) the volcanic strata interface (phase, lithofacies) comparison of geological well section; (4) On the basis of the identification of the three level volcanic strata interface (phase, mechanism and lithofacies) of the seismic cross section, and on this basis, the volcanic mechanism lithofacies distribution model is established. And the volcanic facies, single well, even well, and plane three are restricted and verified by each other. Based on the results of volcanic lithofacies in the Hongxing Xiaolong Bay volcanic rock, the spatial distribution law of volcanic facies in the depression period of the eastern sag of Liaohe basin is analyzed, and the main development of S3q1, S3q2, S3q3, S3q4, S3q5 fire in the fault period of the fault depression period is developed. The main laws are as follows: S3q1, S3q5 is mainly controlled by the fault of driving palmar temple, S3q2, S3q3, and S3q4 are mainly controlled by the driving palm temple and the driving east fault; S3q1, S3q5 mainly is fissured eruption, S3q3 is dominated by central eruption, S3q4 center type and fissure eruption all have the thickest development of S3q2, S3q3, S3q4. The thickness of S3q5 is of medium thickness and the thickness of S3q1 is the smallest. The phase sequence of S3q1 and S3q5 is mainly volcanic channel phase to overflow phase, and volcanic sedimentary facies. The phase sequence of S3q2 and S3q4 is mainly volcanic channel phase (- explosive phase) - overflow phase - volcanic sedimentary facies. The phase sequence of S3q3 is mainly volcanic channel phase (- explosive phase) - emplacement phase (- overflow phase) and volcanic sedimentary facies.3. Liaohe basin. The qualitative relationship between volcanic facies and reservoir physical heterogeneity in the eastern depression is studied by the observation of core and thin slices, and the diagenesis of the volcanic rocks in the eastern sag of the Liaohe basin is studied. According to the diagenesis, the early diagenesis is divided into two categories, condensate consolidation diagenesis and compaction consolidation diagenesis, in which the condensate consolidation diagenesis It includes 7 types of volatilization, condensation, quenching, dehydration, speckle cracking, quasi syngenetic hydrothermal precipitation and melting. Compacted consolidation diagenesis includes 1 types of compaction, 8 types of diagenesis. In the 8 types of diagenesis, volatilization, condensation and shrinkage, quenching, Dehydration and fragmentation of speckles are beneficial to the formation of primary pores of the reservoir, and late diagenesis includes 6 types, filling, dissolution, tectonism, cryptoexplosion breccia, cementation and mechanical compaction and pressure dissolution, in which dissolution, tectonism and cryptoexplosion breccia have the primary reservoir space. There are 6 types of reservoir spaces in the eastern sag of Liaohe basin. The primary reservoir space recognizes 6 types and 10 subtypes, mainly including stomata (stomata, amygdala pore), and shrinkage holes. (devitrified hole, amygdala contraction hole), contraction joint (reticular contraction joint, horizontal joint, columnar joint), cleavage seam, broken crack and lattice hole (intergranular pore); secondary reservoir space of volcanic rocks recognizes 5 categories, 11 subcategories, mainly including dissolution pores (intragranular dissolution pores, intergranular dissolution pores, filling pores), dissolution joints (lysis seams, collection). There are 10 types of lithology in the eastern sag of Liaohe basin, including stomatal basalt and breccia basalt. Breccia coarse rock, volcanic block rock, volcanic breccia, volcanic breccia, and tuffaceous sandstone reservoir are of good physical property, and the tuff reservoir is of medium physical property, tight basalt and tight rough rock reservoir is poor. Based on lithologic property analysis, the main reservoir in the eastern Liaohe basin is analyzed by the lithofacies / subfacies rock combination law. The study of the qualitative relationship between the 5 phase and 13 subfacies and the physical heterogeneity of the reservoir shows that the subfacies and the lateral heterogeneity of the subfacies, which usually consist of a single lithology, are weak, such as the subfacies of the volcanic necks, the subfacies of the volcanic clastic flow, the subfacies of the glassy clastic rocks, and the physical properties, and the subfacies and lithofacies of the single lithologic stratiform distribution. Medium, weak lateral heterogeneity, such as falling subfacies, heat wave subfacies, subfacies of volcanic detritus, subfacies of detrital volcanic deposits and medium physical properties; subfacies and lithofacies of a variety of physical differences that are larger in stratiform distribution are strong in vertical heterogeneity and weak in transverse heterogeneity, such as lamellar lava flow subfacies, invaded facies, and physical properties. As a whole, the heterogeneity of subfacies and lithofacies is strong in space alternately distributed lithology, such as composite lava flow subfacies, and poor physical property, and the heterogeneity of the subfacies of the hidden explosive breccia is determined by oil source comparison in the eastern depression of the.4. Liaohe basin, which is controlled by Yuan Yan. The hydrocarbon source of Hongxing Xiaolong Bay volcanic oil and gas reservoir originates from the source rocks of the strike slip fault (the western part of the driving palm fault).

【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2016
【分類號(hào)】：P618.13
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本文編號(hào)：1836967