饶阳凹陷留西油田南部馆陶组精细构造研究

发布时间：2018-03-03 08:39

本文选题：留西构造带　切入点：馆陶组　出处：《中国石油大学(华东)》2015年硕士论文　论文类型：学位论文

【摘要】：饶阳凹陷的勘探已有40多年的历史,尽管多年来对留西构造的油气分布规律进行过研究,但对于新近系的精细构造研究不够深入,尤其是低级序断层的识别与解释工作并未开展,这些小断层对油气的聚集一般不起控制作用,但是在指导油田开发生产中起到了重要的作用。因此,如何合理而高效地进行精细构造解释并应用精细构造解释信息进行构造成图对研究区域构造特征进行深入的研究是当前所要解决的核心问题。本论文以研究区三维地震资料、测井、钻井等资料为基础,以构造地质学和地震勘探理论为指导,充分利用先进的地震解释技术对留西南部地区三维地震资料进行了精细构造解释。采用井震结合的方式进行多井地层的划分与对比,在地质分层基础上,通过制作合成地震记录,结合地震剖面来反复调整和完善井的地层界面,使地震层位与地质层位相互约束验证,确保了分层的统一,初步建立了地震解释的骨架剖面;采用地震资料的剖面解释、相干数据体解释、三维可视化解释等精细解释技术,完成了研究区连片三维地震资料的精细构造解释;在连片三维精细构造解释的基础上,采取多种低级序断层地震资料识别与解释技术,例如瞬时相位剖面属性技术、剖面双极性变面积显示、沿层相干属性技术、沿层倾角方位角检测技术、断棱边缘检测技术以及断层综合解释技术,落实了研究区内的的四、五级断层;结合合成地震记录井的时深关系以及时间层位作为空间横向约束手段建立了三维速度模型,通过时深转换,实现了研究区四个目的层位的构造成图;根据连片三维构造精细解释的成果描述了研究区的主干断裂特征、断裂组合样式。受早期伸展作用以及晚期走滑作用,研究区内的构造样式可划分为正向滑动断阶构造样式、重力滑动堑背型构造样式以及走滑构造样式;最后在上述研究的基础上结合研究区烃源岩条件、储盖特征及组合、断裂活动强度及时期、油气成藏模式等要素的分析,本文提出三个相对有利的勘探目标,如路22井区、路65井区、路59井区。
[Abstract]:The exploration of Raoyang sag has been going on for more than 40 years. Although the distribution of oil and gas in Liuxi structure has been studied for many years, the fine structure of Neogene is not well studied. In particular, the identification and interpretation of low-grade sequence faults have not been carried out. These small faults do not generally play a controlling role in oil and gas accumulation, but they play an important role in guiding the development and production of oil fields. How to reasonably and efficiently interpret fine structure and make use of the information of fine structure interpretation to make a deep study of the structural characteristics of the studied area is the core problem to be solved at present. Well logging, drilling and other data, guided by tectonic geology and seismic exploration theory, Using advanced seismic interpretation technology, the fine structural interpretation of 3D seismic data in southwestern China is carried out. The multi-well stratigraphic division and correlation are carried out by combining well and earthquake, and on the basis of geological stratification, By making synthetic seismic records and combining seismic profiles to adjust and perfect the formation interface of wells repeatedly, the seismic horizon and geological horizon are mutually constrained and verified, thus ensuring the unification of stratification, and the skeleton section of seismic interpretation is preliminarily established. Using fine interpretation techniques such as section interpretation, coherent data volume interpretation and 3D visualization interpretation, the fine structure interpretation of 3D seismic data in the study area is completed. A variety of low-order sequence fault seismic data identification and interpretation techniques are adopted, such as instantaneous phase profile attribute, section bipolar variable area display, coherent attribute along the layer, azimuth detection along the dip angle, etc. Fault edge detection technology and fault comprehensive interpretation technology, implemented the 4, 5 fault in the study area, combined with the time-depth relationship of synthetic seismic logging wells and time horizon as space lateral constraints to establish a three-dimensional velocity model. Through time-depth conversion, the structural mapping of the four target layers in the study area is realized, and the characteristics of the main faults, the fault assemblage patterns, the early extension and the late strike-slip are described according to the results of the fine interpretation of the three dimensional tectonics in the study area. The structural styles in the study area can be divided into three types: the normal sliding fault stage, the gravity slip back and the strike-slip structure. Finally, on the basis of the above research, the source rock conditions, reservoir cap characteristics and assemblages in the study area are combined. Based on the analysis of the strength of fault activity and the time of oil and gas accumulation model, this paper puts forward three relatively favorable exploration targets, such as well Lu 22, well 65 and well 59.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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