杏十区地震资料解释及应用研究

发布时间：2018-05-31 22:44

本文选题：井震结合 + 属性优选　；参考：《东北石油大学》2016年硕士论文

【摘要】：石油与天然气资源是保障民生和国家安全的重要战略资源,在未来几十年内很难被替代,我国1993年就成为纯石油进口国,以后进口逐年增加,因此油气资源的勘探开发极具价值。截止到2011年底,大庆长垣大部分区块完成了以井资料为主的多学科油藏研究工作。杏南开发区在2010年实现了多学科油藏研究成果的全面覆盖,应用井资料的地质认识成果建立地质模型,历史拟合精度达到了80%以上,但还存在个别井层历史拟合精度较低的问题,不利于精细调整挖潜,分析影响历史拟合精度的主要原因是地质认识精度。地震资料是地球物理工作中一个非常重要的内容,将地震资料转化为地质语言的质量影响到地震资料能否充分发挥其作用。对于油田开发而言,想要实现研究区精确细致的构造解释并结合高密度井网下的三维地震资料解释来完成井间砂体的预测,应当深入的了解研究区构造特征、沉积微相展布特征。随着油藏精细描述技术的不断发展,基于地质认识成果的多学科油藏研究也在大庆油田逐步开展,本文以杏十区葡萄花油层为研究对象,开展基于井震结合的提高储层预测精度研究。以层序地层学理论为指导,石油地质、构造地质、地球物理等多学科结合,对杏十区三维地震资料进行了精细构造解释。通过地震属性优选用于储层预测的地震属性,并实现地震属性对砂泥岩门槛值的定量表征,从而准确描述河道砂的边界和走向。符合率分析表明,井间河道砂体预测精度达到了85%,区块应用结果表明:井震结合后窄小河道砂更加连续,河道边界及河道摆动位置变化较大,井间的连通关系更加准确,为进一步开展河道砂体剩余油研究提供了更加可靠的依据。完成了井震结合三维构造解释及建模方法研究,精确刻画断层的空间组合关系,建立断层模型;进行构造建模算法适应性分析,建立三维构造模型;绘制单元级微幅度构造平面图,总结构造及断层发育特征。通过井震结合储层精细描述研究地震属性与砂体展布相关性;探索地震多属性综合描述井间砂体的方法;利用井震结合方法研究二类油层砂体分布特征。利用叠后反演进行储层预测,最终建立研究区的三维模型。对准确掌握储层砂体及剩余油分布规律,同时指导加密井网的部署具有指导意义。
[Abstract]:Petroleum and natural gas resources are important strategic resources to protect the people's livelihood and national security. It is difficult to be replaced in the next few decades. China became a pure oil importer in 1993, and the future imports increased year by year. Therefore, the exploration and development of oil and gas resources is of great value. By the end of 2011, most blocks in Changyuan of Daqing completed well data. The multi-disciplinary reservoir research work of multi discipline reservoir. In 2010, the development area of Xing Nan developed the comprehensive coverage of the multi-disciplinary reservoir research results. The geological model was established by the geological knowledge of well data. The history fitting precision reached more than 80%, but there was a problem of low history fitting precision of individual well layer, which was not conducive to fine adjustment and excavation and analysis of influence. The main reason for the accuracy of the history fitting is the geological understanding precision. Seismic data is a very important content in geophysical work. The transformation of seismic data into the quality of geological language affects the effect of seismic data. The three-dimensional seismic data under density well network can be interpreted to predict the interwell sand body. It is necessary to understand the characteristics of the study area and the characteristics of microfacies distribution. With the continuous development of the fine description technology of the reservoir, the multi-disciplinary reservoir research based on the geological knowledge is also carried out gradually in Daqing oilfield. In this paper, the apricot ten zone grape flower oil layer is used in this paper. In order to improve the prediction accuracy of reservoir based on well seismic integration, the seismic data of the apricot ten region are carefully explained by the combination of sequence stratigraphy theory, petroleum geology, tectonic geology and geophysics. The quantitative characterization of the threshold value of sand mudstone is used to accurately describe the boundary and direction of the channel sand. The coincidence rate analysis shows that the prediction accuracy of the channel sand body is 85%. The application results of the block indicate that the narrow river channel sand is more continuous after the well earthquake is combined, the river boundary and the channel swing position change greatly, and the connection relationship between wells is more accurate. In order to provide more reliable basis for further research on the residual oil of channel sand body, the three-dimensional structural interpretation and modeling method of well seismic combination are completed, the spatial composition relationship of the fault is accurately depicted, the fault model is established, the adaptive analysis of the structural modeling algorithm is carried out, the three dimensional structural model is established, and the unit level micro amplitude structural plane is drawn. The characteristics of structure and fault development are summarized. Through well seismic combined with reservoir fine description, the correlation between seismic attributes and sand body distribution is studied, the method of seismic multi attribute comprehensive description of interwell sand body is explored, and the distribution characteristics of the sand body of two types of oil reservoirs are studied by using well seismic combination method. The reservoir prediction is carried out by post stack back inversion, and three of the research area is finally established. Dimensional model is of guiding significance for accurately grasping the distribution of sand bodies and remaining oil in reservoirs, and guiding the deployment of infilling well pattern.
【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】：P631.44

【相似文献】