基于分形插值的砂体展布规律预测研究

【作者】 胡绿慧；

【导师】 龚灏； 卢玉蓉；

【作者基本信息】 成都理工大学 ， 计算数学， 2006， 硕士

【摘要】 近年来，砂体展布规律是油层储藏研究的热点和重点，也是石油和天然气勘探与开发对储层研究提出的更高要求。而当前对砂体的研究工作主要集中在对砂体的微观非均质性和宏观非均质性的研究上。其研究的方法主要采用神经网络技术和测井约束反演技术等，这些研究方法在实际应用中取得了较好的效果，但是仍存在许多不足之处，需要探索采用别的方法对砂体的展布规律进行研究。 本文提出了采用分形插值方法对砂体的展布规律进行研究，从全新的角度为油气勘探、开发提供更多的技术支持。本文首先介绍了分形理论和分形插值方法，重点介绍了分形插值曲面；然后描述了砂体展布的分形特征，分析论证了使用分形插值方法研究砂体展布的可行性，以及用此方法研究的技术路线，主要采用三维分形插值做出了砂体展布的平面展布图和三维展布图，由此给出砂体展布的规律；最后根据对塔巴庙地区太原组砂体的物性特点的分析，以及对大量文献调查和研究现状的分析，利用地质、岩芯和测井资料研究砂体展布规律。使用分形插值方法，建立了砂体展布规律预测模型，利用计算机软件对太原组储层做出物性平面展布和三维展布图，作出了太一段、太二段砂厚、煤厚、砂地比、层厚等参数的分布图，并结合该地区的沉积环境和沉积相，总结了塔巴庙太原组储层的发育特征及分布规律，指出了有利区块，与工程实际较为吻合，为进一步的勘探、开发工作提供了可靠依据。更多还原

【Abstract】 In recent years, the rule of sandstones distribution is a hot topic in the oil reservior field, and is a higher request that the oil and gas development proposes to reservoir research. But current research work is mainly based on the sandstones’ microscopic anisotropism and the macroscopic anisotropism. Research methods are nerve network technology and oil well logging restraint inversion technology and so on. These research techniques have obtained better effect in the practical application, but still exist much deficiency, need to use other method to study the rule of sandstones distribution.This paper proposed to use fractal interpolation to study the rule of the sandstones distribution. It provided more technical support from the brand-new angle for the oil and gas exploration and development. Firstly, this paper introduced fractal theory and fractal interpolation method, introduced the fractal interpolation curved surface with emphasis; Secondly, the paper described fractal characteristic of sandstones distribution, analized and proved the feasibility that fractal interpolation method was used to study sandstones distribution, as well as the research technical route with this method. Mainly used three dimensional fractal interpolation to make the plane unfolds and three dimensional unfolds. Finally, the paper analyzed sandstones natural characteristic of Taiyuan Formation in Tarbamiao Block, as well as investigated and researched the massive literature. Used geology, core and log data to study the nature of Taiyuan Formation reservoir and used fractal interpolation method and computer software to make the natural plane and three dimensional unfolds of Taiyuan Formation reservoir. Summarized Taiyuan Formation reservoir characteristic and the distribution rule, and established three-dimensional model which basically reflected characteristic of Taiyuan Formation reservoir. This will provide the the basic data for the next step of exploration.更多还原