腰英台地区登娄库组与泉头组一段沉积相研究

发布时间：2018-06-24 16:27

本文选题：松辽盆地 + 地层划分与对比　；参考：《吉林大学》2015年硕士论文

【摘要】：腰英台地区位于松辽盆地南部，长岭断陷中部凸起带上。长岭断陷油气资源丰富，勘探程度相对较低，油气勘探潜力较大。本文综合腰英台地区及周边临区的岩心、测井及各项地质基础资料，运用沉积学、层序地层学、古地理学等理论和方法，进行研究区地层划分、沉积相类型识别、相带展布与砂体展布等方面的研究。通过本次研究，对腰英台地区登娄库组和泉一段的沉积特征有了更深入的认识。通过地震界面识别与追踪闭合，采用旋回控制、岩性突变等方法，识别出登娄库组二、三、四段和泉头组一段的顶底界面位置，建立全区目的层段的地层格架。在对岩心宏观和微观特征描述的基础上，通过分析其岩石学、沉积构造和测井曲线特征，总结研究区的相标志，最终识别和划分出研究区的沉积相。通过相标志的识别，发现腰英台地区登娄库组和泉一段沉积相类型主要为辫状河三角洲，伴有少量的湖泊相。辫状河三角洲发育平原和前缘亚相，湖泊为浅湖亚相且分布较局限，主要在腰深2井登二段发育。在对砂岩厚度图、砂地比图分析的基础上，，结合全区构造演化特征，确定登二、登三段物源来自南部，登四段物源主要来自西南部，泉一段物源主要来自东南方。最终确定了腰英台地区登娄库组和泉头组一段的沉积相平面分布及垂向演化特征。
[Abstract]:Yaoyingtai area is located in the south of Songliao Basin, the middle uplift belt of Changling fault depression. Changling fault depression is rich in oil and gas resources, relatively low degree of exploration, oil and gas exploration potential. In this paper, the core, logging and geological basic data of Yaoyingtai area and its surrounding area are synthesised, and the stratigraphic division and type identification of sedimentary facies are carried out by using the theories and methods of sedimentology, sequence stratigraphy, paleogeography, etc. Study on the distribution of facies belt and sand body. Through this study, the sedimentary characteristics of Dengloku formation and Quan I member in Yaoyingtai area are further understood. By means of seismic interface identification and tracking closure, cycle control and lithologic abrupt change, the top and bottom interface positions of the second, third, fourth and first member of Denglouku formation and the first member of the Quantou formation are identified, and the stratigraphic framework of the target layer in the whole area is established. On the basis of describing the macroscopic and microscopic characteristics of the core, through analyzing the characteristics of petrology, sedimentary structure and logging curve, the facies marks of the study area are summarized, and the sedimentary facies of the study area are finally identified and divided. Based on the identification of facies markers, it is found that the sedimentary facies of Denglooku formation and Quanyi member in Yaoyingtai area are mainly braided river deltas with a few lacustrine facies. The braided river delta developed plain and front subfacies and the lake was shallow lacustrine subfacies and its distribution was limited. On the basis of the analysis of sandstone thickness map and sand ratio map, combined with the structural evolution characteristics of the whole area, it is determined that the source of Denger, Deng3, Deng4 and Quan are mainly from the south, the southwest and the southeast, respectively. Finally, the sedimentary facies plane distribution and vertical evolution characteristics of the first member of Denglooku formation and Quantou formation in Yaoyingtai area are determined.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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