二连盆地阿尔凹陷构造特征探究
发布时间：2018-10-15 17:01
【摘要】：阿尔凹陷是二连盆地的东北部,是在海西期褶皱基底上发育起来的中、新生代东断西超的箕状凹陷,为一典型的富油凹陷。本论文在测录井、区域地质资料以及三维地震精细构造解释的基础上,通过构造几何学特征的精细研究,划分了阿尔凹陷的结构单元,明确了阿尔凹陷断裂的展布以及构造样式类型;通过对构造演化的分析,明确了断裂的发育特征以及盆地的演化过程,并结合区域构造地质背景以及周边板块相互作用,探讨阿尔凹陷断裂发育以及盆地演化的成因机制。在此研究的基础上,通过分析构造油藏模式,总结油气分布规律,进而分析构造对成藏的控制作用。阿尔凹陷主要发育北西向断裂,边界阿尔塔拉断裂控制盆地东断西超的结构;盆地断裂性质主要为拉张性质,进而发育伸展构造样式;阿尔凹陷演化分为裂谷初期、裂谷发育期、裂谷萎缩期、回返抬升期四个阶段,同时在腾一段晚期、腾二段末期和赛汉组中晚期存在构造反转,形成一系列大型背斜隆起,从而形成构造圈闭。同时构造运动控制着烃源岩的展布范围,以及油气的成熟与生排、油气的运聚与成藏,以及圈闭的有效性和油气藏的保存。
[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.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13
本文编号：2273196
[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.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13
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