Development of Destruction Simulator for Evaluation of Oil Seal Capacity

构造型圈闭封闭性评价技术是油田勘探开发中的一个重要问题。然而，对于这样一个基本的问题，迄今为止，理论发展很难给出一个明确的答案。为了解决这些问题，本研究项目采用离散单元法（DEM）开发了一个针对油藏的基岩断裂模拟器。本文所采用的离散单元法及其先进的数值模拟技术，已成为工程领域中一种实用的数值模拟方法。这些被认为是应用于破坏现象的非常强大的工具。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，由于算法开发很难处理的形成故障薄纱计划在第一，我们是不完整的开发这一功能。该模拟器可应用于油藏分析，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，与能够再现构造发展历史的砂箱试验相结合的研究被提出来。

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.