本文關(guān)鍵詞： 昌德氣田 深層構(gòu)造 斷裂系統(tǒng) 天然氣成因 成藏模式　出處：《浙江大學》2015年碩士論文　論文類型：學位論文

【摘要】：大慶深層氣藏有徐深、昌德、升平等3個,目前已建成了14×108m3的產(chǎn)能,“十二五”期間,大慶天然氣產(chǎn)量要達到50×108m3,昌德氣田為重要開發(fā)區(qū)塊之一。為了進一步合理開發(fā)昌德氣田儲量,有必要針對昌德氣田深部構(gòu)造及油氣成藏的控制因素進行研究,為后續(xù)勘探開發(fā)提供技術(shù)支持。本文在對昌德氣田三維地震資料進行構(gòu)造精細解釋和系統(tǒng)分析的基礎(chǔ)上,開展了深部構(gòu)造的研究,認為昌德氣田發(fā)育三套斷裂體系,即早白堊世斷陷發(fā)育時期的東西向正斷裂體系、青山口組沉積時發(fā)育的南北向正斷裂體系和新生代晚期的正斷裂體系。早白堊世發(fā)育的東西向正斷裂對早白堊世的沉積具有控制作用,控制了早白堊世斷陷的發(fā)育；而青山口組沉積時發(fā)育的南北向正斷層體系屬于弱生長斷層體系,青山口早期的沉積在正斷層附近沉積厚度有所加大,正斷層對早期的沉積具有重要的控制作用。構(gòu)成昌德氣田深層氣藏的昌德氣藏和昌德東氣藏組,無論從天然氣組分組成、分布特征、碳同位素特征還是氣藏類型等都存在明顯的差異。對于兩者的天然氣成因、昌德氣藏中的天然氣有相當部分是來源于深層的無機成因氣,而昌德東氣藏天然氣主要為有機成因的煤成氣,來源于徐家圍子斷陷烴源巖源區(qū)。在前人研究的基礎(chǔ)之上,利用昌德氣田13口深層鉆井的各種測試、分析資料進行綜合整理和分析,開展了昌德氣田的綜合研究,建立了昌德氣田的天然氣成藏模式,包括：不整合面+基巖風化殼成藏模式,不整合面或砂體+斷裂+古隆起的成藏模式,裂縫+火山巖成藏模式,砂體+地層超覆圈閉成藏模式。
[Abstract]:There are three deep gas reservoirs in Daqing, including Xu Shen, Changde and Shengping. At present, 14 脳 108 m3 production capacity has been built, and during the 12th Five-Year Plan period, The natural gas production of Daqing should reach 50 脳 108m3, and Changde gas field is one of the important development blocks. In order to develop the reserves of Changde gas field rationally, it is necessary to study the controlling factors of deep structure and oil and gas accumulation in Changde gas field. Based on the detailed structural interpretation and systematic analysis of 3D seismic data in Changde gas field, the deep structure is studied, and it is considered that three sets of fault systems are developed in Changde gas field. The east-west normal fault system during the development of early Cretaceous fault depression, The north-south normal fault system and the late Cenozoic normal fault system developed in Qingshankou formation. The east-west normal fault developed in the early Cretaceous controlled the deposition of the early Cretaceous and controlled the development of the early Cretaceous fault depression. However, the north-south normal fault system developed in Qingshankou formation is a weakly growing fault system, and the deposition thickness near the normal fault in the early Qingshankou formation has increased. The normal fault plays an important role in controlling the early deposition. The Changde gas reservoir and the Changdedong gas reservoir group, which constitute the deep gas reservoir in Changde gas field, regardless of the composition and distribution characteristics of natural gas, There are obvious differences between carbon isotope characteristics and gas reservoir types. For the origin of natural gas in Changde gas reservoir, a considerable part of the natural gas in Changde gas reservoir is derived from deep inorganic gas. The natural gas in Changdedong gas reservoir is mainly organic coal-formed gas, which comes from the source rock of Xujiaweizi fault depression. On the basis of previous studies, the various tests of 13 deep drilling wells in Changde gas field are used. The comprehensive research of Changde gas field is carried out, and the gas accumulation model of Changde gas field is established, including the weathering crust model of unconformity surface bedrock. The reservoir forming model of unconformity surface or sandbody fault paleouplift, the reservoir forming model of fractured volcanic rock, and the overlying trap model of sand formation.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P618.13

【參考文獻】

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本文編號：1547951