【摘要】：阿爾凹陷是二連盆地的東北部,是在海西期褶皺基底上發(fā)育起來(lái)的中、新生代東斷西超的箕狀凹陷,為一典型的富油凹陷。本論文在測(cè)錄井、區(qū)域地質(zhì)資料以及三維地震精細(xì)構(gòu)造解釋的基礎(chǔ)上,通過(guò)構(gòu)造幾何學(xué)特征的精細(xì)研究,劃分了阿爾凹陷的結(jié)構(gòu)單元,明確了阿爾凹陷斷裂的展布以及構(gòu)造樣式類(lèi)型;通過(guò)對(duì)構(gòu)造演化的分析,明確了斷裂的發(fā)育特征以及盆地的演化過(guò)程,并結(jié)合區(qū)域構(gòu)造地質(zhì)背景以及周邊板塊相互作用,探討阿爾凹陷斷裂發(fā)育以及盆地演化的成因機(jī)制。在此研究的基礎(chǔ)上,通過(guò)分析構(gòu)造油藏模式,總結(jié)油氣分布規(guī)律,進(jìn)而分析構(gòu)造對(duì)成藏的控制作用。阿爾凹陷主要發(fā)育北西向斷裂,邊界阿爾塔拉斷裂控制盆地東斷西超的結(jié)構(gòu);盆地?cái)嗔研再|(zhì)主要為拉張性質(zhì),進(jìn)而發(fā)育伸展構(gòu)造樣式;阿爾凹陷演化分為裂谷初期、裂谷發(fā)育期、裂谷萎縮期、回返抬升期四個(gè)階段,同時(shí)在騰一段晚期、騰二段末期和賽漢組中晚期存在構(gòu)造反轉(zhuǎn),形成一系列大型背斜隆起,從而形成構(gòu)造圈閉。同時(shí)構(gòu)造運(yùn)動(dòng)控制著烴源巖的展布范圍,以及油氣的成熟與生排、油氣的運(yùn)聚與成藏,以及圈閉的有效性和油氣藏的保存。
[Abstract]:Al Sag is a typical oil-rich depression developed in the Mesozoic and Cenozoic East faulted and Western superimposed dustpan depression in the northeast of Erlian Basin. On the basis of logging, regional geological data and 3D seismic fine structure interpretation, this paper divides the structural units of Al Sag through the detailed study of structural geometry characteristics. Through the analysis of tectonic evolution, the development characteristics of the fault and the evolution process of the basin are clarified, and combined with the regional tectonic geological background and the interaction of the surrounding plates, the distribution of the faults and the types of the structural styles are defined. The genetic mechanism of fault development and basin evolution in Al Sag is discussed. On the basis of this research, the distribution law of oil and gas is summarized by analyzing the structural reservoir model, and then the controlling effect of structure on reservoir formation is analyzed. The Arg sag is mainly developed NW trending fault, the boundary Altara fault controls the structure of the east fault and the west superposition of the basin, the fault nature of the basin is mainly extensional, and then the extensional structural style is developed. There are four stages of rift development, rift atrophy and return uplift. At the same time, there are structural reversals in the late stage of Tengyi formation, the last stage of Tengyi formation and the middle and late stage of Saihan formation, forming a series of large anticline uplifts, thus forming structural traps. At the same time, the tectonic movement controls the distribution of source rocks, the maturity and expulsion of oil and gas, the migration and accumulation of oil and gas, the validity of traps and the preservation of oil and gas reservoirs.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：P618.13

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