松辽盆地北部江桥南地区浅层构造精细解释与储层预测

发布时间：2018-07-25 09:10

【摘要】：江桥南地区位于松辽盆地北部西部斜坡上,前期对于油气的认识主要集中于中深层,对其浅层构造及储层认识不足。为了加快油气勘探开发,拓展油气勘探领域,针对江桥南地区浅层,本文从构造解释和储层预测方面进行重点研究,对其进行精细构造解释,研究其构造特征、形态以及圈闭特征,优选有利方法进行储层预测,从而为下一步油气勘探开发奠定坚实的基础。研究区构造形态简单,整体为西高东低的斜坡构造背景。本文利用三维地震资料进行精细构造解释,落实了该区的构造特征,研究认为该区经历多次构造运动之后,形成一个贯穿南北的区域大断层,该断层多期活动,早期控盆、后期逆冲反转沿断层东侧形成南北向条带状的褶皱带,并在浅层形成继承性发育的背斜构造圈闭。其余断层为发育规模较小、横向延伸长度短、中部断层南北方向多、东北部断层北北东向的特点。该区储层厚度不均,厚薄互层。本文以测井资料为基础,建立各层段井震对比格架,将研究区浅层划分为16个基本预测单元,利用地质统计学反演方法开展储层反演岩性预测,认为研究区浅层砂岩发育,其中嫩三段储层最为有利,为浅层有利层段。最后,综合研究区构造及其储层特征,优选浅层嫩三段为有利区带。
[Abstract]:Jiangqiao South area is located on the western slope of the northern Songliao Basin. The previous understanding of oil and gas is mainly concentrated in the middle and deep layers, but the shallow structure and reservoir are not well understood. In order to speed up the exploration and development of oil and gas and expand the field of oil and gas exploration, aiming at the shallow layer in Jiangqiao South area, this paper focuses on structural interpretation and reservoir prediction, carries out fine structural interpretation and studies its structural characteristics. In order to lay a solid foundation for oil and gas exploration and development in the next step, the morphology, trap characteristics and favorable selection method are used for reservoir prediction. The structure of the study area is simple, the whole is the west high east low slope structure background. In this paper, three dimensional seismic data are used for fine structural interpretation, and the structural characteristics of the area are carried out. It is considered that after many tectonic movements, the area has formed a large fault running through the north and south, the fault is active in many phases, and the basin is controlled in the early stage. The late thrusting inversion formed a north-south zonal fold belt along the east side of the fault and formed inherited anticline structural traps in the shallow layer. The other faults are characterized by small development scale, short transverse extension length, more north-south direction of the central fault and NNE direction of the northeast fault. The reservoir in this area is uneven in thickness and interbedded in thickness. On the basis of logging data, this paper establishes a well seismic correlation framework for each interval, divides the shallow layer in the study area into 16 basic prediction units, uses the method of geostatistical inversion to predict the reservoir inversion lithology, and considers that the shallow sandstone is developed in the study area. Among them, the third member of Nen formation is the most favorable reservoir, which is the shallow favorable formation. Finally, synthesizing the structure and reservoir characteristics of the study area, the favorable zone is selected as the third member of shallow layer.
【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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