萨南七东试验区葡I1-4砂组构造、砂体井震综合研究

发布时间：2019-06-25 17:59

【摘要】：对于开发中后期阶段的油田,落实微构造对后期的开发效果的改善,注采关系的调整都尤其重要。本次研究的萨南七东实验区已经进入后期高含水开发阶段,精细构造的研究工作也就显得格外的重要。通过对三维地震资料进行测井曲线优选处理,精细的制作了合成记录,并且精细准确的层位追踪,运用层间趋势方法,按照振幅、同相或连续性、波形相似性三个基本的原则,对萨南七东试验区主力油层4个小层9个时间单元进行准确的追踪和刻画。再运用观察法,相干体法、层面属性法等技术对大中断层进行识别和刻画,并且通过先观察浏览三维数据体切片再用波形差异体以及三维空间浏览的方法对微小断层进行了识别和刻画,并且结合测井曲线进行了断层位置的验证和校正,最终落实准确的断层位置和规模。并且通过速度场校正制作了葡萄花顶面等T0图和构造图。在构造图上识别出两个小断鼻。构造解释的成果,可以认清断层系统,不仅可以优化调整开发方案,指导补充调整井、高效井及大位移井部署,完善断层附近注采系统综合调整,过渡带外扩布井方案的编制和实施等提供了有利依据,为高含水后期可持续开发、寻找受断层控制的可动剩余油富集区提供了保障。通过对实验区沉积相类型分析砂体展布研究,确定方案进行属性的提取和砂体的识别。主要采取切片法、多属性融合、相位转换、地震相分类、分频地层体切片等方法提取属性,最终砂体识别程度较好,主力油层砂体识别符合率达到80%以上,属性图的准确对后期进一步开发提供有力的地震保障。
[Abstract]:For the oil fields in the middle and late stages of development, it is particularly important to improve the development effect of microstructure and adjust the relationship between injection and production. The experimental area of Sanan Qidong has entered the stage of high water cut development in the later stage, and the research work of fine structure is particularly important. By optimizing the logging curves of 3D seismic data, the synthetic records are made carefully, and the precise and accurate horizon tracking is made. according to the three basic principles of amplitude, in-phase or continuity and waveform similarity, the four small layers and nine time units of the main reservoirs in the Qidong experimental area of Sanan are accurately traced and characterized by using the interlayer trend method. Then the observation method, coherence method and layer attribute method are used to identify and depict the large and medium faults, and then the micro faults are identified and characterized by observing and browsing the 3D data volume slices, then the micro faults are identified and characterized by the method of waveform difference and 3D spatial browsing, and the fault position is verified and corrected in combination with the logging curve, and the accurate fault position and scale are finally implemented. The T 0 diagram and structure diagram of grape flower top surface were made by velocity field correction. Two small broken noses were identified on the structural map. The results of structural interpretation can recognize the fault system, which can not only optimize the development scheme, guide the deployment of supplementary adjustment wells, high efficiency wells and large displacement wells, perfect the comprehensive adjustment of injection-production system near faults, and provide a favorable basis for the compilation and implementation of extended wells outside the transition zone, which provides a guarantee for the sustainable development of high water cut and the search for movable remaining oil enrichment areas controlled by faults. Through the study of the distribution of sand bodies in the analysis of sedimentary phase types in the experimental area, the scheme is determined to extract the attributes and identify the sand bodies. The attributes are extracted by slicing method, multi-attribute fusion, phase conversion, seismic phase classification, frequency division stratigraphy and so on. Finally, the recognition degree of sand body is better, and the coincidence rate of sand body recognition in main reservoir is more than 80%. The accuracy of attribute map provides a powerful seismic guarantee for further development in the later stage.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P618.13;TE32

【相似文献】