哈拉哈塘地区奥陶系走滑断裂特征研究

发布时间：2018-05-05 22:50

本文选题：走滑断裂 + 地震　；参考：《西安石油大学》2015年硕士论文

【摘要】：哈拉哈塘油田是塔里木盆地的一个大型海相碳酸盐岩油田,目前随着勘探开发的日益深入,油田在生产过程中遇到了很多问题,如何寻找油气富集区,如何部署高产稳产井成为急需解决的问题,在哈拉哈塘地区奥陶系碳酸盐岩地层中发育众多走滑断裂,走滑断裂由于断面比较陡直,断距小,在地震剖上识别难度大,研究中从叠前CRP道集入手,通过优化叠前道集数据得到较好的叠后地震数据,在利用图像增强技术增强断裂的断点反射特征,最后利用多方法较好的预测了走滑断裂的分布,理清了走滑断裂的规模、类型、期次,通过研究认为走滑断裂是控制碳酸盐岩储层发育的主要因素,碳酸盐岩孔洞型储层主要沿着走滑断裂的断面以及周围的挤压破碎带发育,断裂除了控制岩溶储层的发育外,还是油气运移的主要通道,油气沿着走滑断裂通道进入到碳酸盐岩储层中,形成了碳酸盐岩孔洞型油气藏。并且进一步研究发现,不同的断裂类型对油气的富集程度控制不一样,大型走滑断裂以及在其旁边发育的的花状断裂是油气的主要富集区,而直立高陡断裂由于规模小,不是油气的主要富集区,并且在断裂精细识别的基础上,总结出了有利于油气富集的断裂类型。
[Abstract]:Hala Hattang Oilfield is a large marine carbonate oil field in Tarim Basin. With the deepening of exploration and development, the oilfield has encountered many problems in the production process. It is urgent to solve the problem of how to deploy high and stable production wells. Many strike-slip faults have been developed in Ordovician carbonate strata in Hala Hattang area. Due to the steeper section and small fault spacing, strike-slip faults are difficult to identify in seismic profile. In this study, we start with prestack CRP gathers, obtain better post-stack seismic data by optimizing prestack gather data, enhance fracture point reflection characteristics by image enhancement technique, and finally predict the distribution of strike-slip faults by multiple methods. The scale, type and period of strike-slip fault are clarified. It is considered that the strike-slip fault is the main factor controlling the development of carbonate reservoir, and the carbonate pore type reservoir mainly develops along the section of strike-slip fault and the surrounding compressional fracture zone. Apart from controlling the development of karst reservoir, fault is also the main channel of oil and gas migration. Oil and gas enter into carbonate reservoir along the strike-slip fault channel, forming carbonate pore type reservoir. Furthermore, it is found that the enrichment degree of oil and gas is controlled by different fault types. The large strike-slip faults and the flower-like faults developed next to them are the main oil and gas rich areas, while the vertical high-steep faults are small in scale. It is not the main oil and gas accumulation area, and on the basis of fine identification of faults, the types of faults that are favorable to hydrocarbon enrichment are summarized.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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