巴音都兰凹陷北洼槽阿尔善组与腾格尔组沉积体系研究

发布时间：2018-04-22 08:53

本文选题：巴音都兰凹陷北洼槽 + 沉积相　；参考：《东北石油大学》2017年硕士论文

【摘要】：巴音都兰凹陷北洼槽是二连盆地主要的含油气凹陷,其沉积演化复杂,陡坡带砂砾岩体类型多样,有利储集相带面貌不清,这极大的制约了该区油气勘探部署工作,因此开展系统的沉积相研究,搞清砂体的展布特征是当下急需解决的问题。本论文在前人研究的基础上,以石油地质、沉积学以及地震勘探原理等基础理论为指导,结合野外地质实践考察资料、地震、测井和实际试采试油等相关的数据及资料,对二连断陷湖盆巴音都兰凹陷北洼槽阿尔善组与腾格尔组沉积体系进行了详细的研究。区域地质背景和构造分析,认为阿尔善组沉积时期由于构造活动剧烈,发育多条近似南北方向的控凹陷边界大断层,形成东南断、西北超的单断箕状盆地,这些断层控制了该时期砂体的类型和展布。腾一段沉积时期,处于整体沉降阶段,构造活动强度减弱,为拗陷型沉积盆地,该时期湖盆范围明显扩大,砂体规模缩小。沉积相研究结果表明,北洼主要发育湖泊相的浊积岩、扇三角洲相前缘亚相分流水道和近岸水下扇相扇中水道三种等微相。在单井相、连井相分析的基础上,结合砂体厚度、地震相特征等资料,明确了不同沉积相类型的纵平面的展布特征以及砂体的展布范围。搞清了研究区目的层段碎屑岩岩石学特征、储集空间类型、储层物性特征等,并对影响该区储层物性的主要影响因素进行了分析,结合实钻储集物性分析,从已经发现的油藏的成藏特征为出发点,优选出工区有利的储集相带,以指导该区下步的油气勘探。
[Abstract]:The north depression of the Ba Induran sag is the main oil and gas bearing sag in the two Lian basin. Its sedimentary evolution is complex and the types of sand and gravel in the steep slope are diverse and the favorable reservoir facies belts are not clear, which greatly restricts the exploration and deployment of oil and gas in this area. Therefore, it is urgent to study the sedimentary facies of the system and clarify the distribution characteristics of the sand body. On the basis of previous studies, this paper, guided by the basic theories of petroleum geology, sedimentology and seismic exploration, combines data and data related to field geological practice, seismic, logging and actual test oil test, and the sedimentary bodies of the ALSHAN formation and Teng Ko Erh formation in the north depression of the Ba Yin Dulan sag of the two Lian fault depression lake basin. The Department carried out a detailed study. The regional geological background and structural analysis showed that the ALSHAN formation period, due to violent tectonic activity, developed a large number of large faults in the controlled depression boundary of the north and the south, forming a southeastern fault and a single fault dustpan basin in the northwest. These faults controlled the type and distribution of the sand body in this period. At the stage of overall settlement, the intensity of tectonic activity is weakened, which is a depression type sedimentary basin. In this period, the scope of the lake basin was obviously enlarged and the size of the sand body was reduced. The results of sedimentary facies study showed that the north depression mainly developed the turbidite of the lake facies, the subfacies distributary channel in the fan delta facies and the waterway in the subaqueous fan phase fan in the near shore, and in the single well facies. Based on the analysis of well facies, combining sand body thickness and seismic facies characteristics, the distribution characteristics of the vertical plane of different sedimentary facies and the distribution range of sand bodies are clarified, and the lithological characteristics, reservoir space types and reservoir properties of the target strata in the study area are clarified, and the main influence on the reservoir physical property in this area is affected. The factors are analyzed, and the reservoir characteristics of the real drilling are analyzed. The favorable reservoir facies belt is selected to guide the oil and gas exploration in this area.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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