Development of Destruction Simulator for Evaluation of Oil Seal Capacity

构造型油气圈闭密封能力评价技术是油田勘探开发中的一个重要问题。然而，对于这样一个基本问题，迄今为止很难从理论上得到一个明确的答案。为了解决这些问题，本课题采用DEM （Distinct Element Method）方法，研究了面向油藏的基岩断层模拟系统的开发。本研究所采用的离散元法及其先进技术已成为工程领域中有用的仿真方法。这些被认为是应用程序中非常强大的工具，用于销毁现象。然而，将DEM应用于地质问题是本研究的一个独特之处和特点。在项目的第一阶段，开发了能够再现破坏现象的模拟器。然而，由于算法的开发很难处理最初规划的故障薄纱的形成，我们对该功能的开发还不完整。该模拟装置可应用于油藏分析，研究逆冲断层系的形成历史，开辟了一个新的研究领域。为了考虑这些模拟结果，必须与构造地质学联系起来。因此，提出了与沙箱实验相结合，再现构造发展史的方法。

A technology that can evaluate seal ability of a structure type oil trap is a very important problem in searching and developing oil fields. However, for such a basic problem, the theoretical development which could sponsor a clear answer was difficult until now. To solve these problems, development of a simulator forbedrock faulting which intended for the oil reservoir was investigated using a DEM (Distinct Element Method) in this research project. The Distinct Element Method adopted in this research and its advanced techniques have been used as useful simulation methods in the field of engineering works. These are known as very strong tools in an application to a destruction phenomenon. However, it is a unique point and a characteristic of this research that applied DEM to geological problems.At first stage of the project, the simulator which could reproduce a destruction phenomenon was developed. However, because algorithm development was difficult to the handling of the formation of fault gauzy planned at first, we were incomplete to develop this functions. The simulator developed here, can apply to the oil reservoir analysis which can investigate a history of formation of thrust fault series and this approach created a new research field. Connection with structural geology was necessary in order to consider these simulation results. So connection with the sandbox experiment that could reproduce history of structure development was pushed forward.