基于三维角点网格模型的现今地应力有限元模拟

doi:10.13209/j.0479-8023.2019.020

北京大学学报自然科学版 ›› 2019, Vol. 55 ›› Issue (4): 643-653.DOI: 10.13209/j.0479-8023.2019.020

基于三维角点网格模型的现今地应力有限元模拟

刘钰洋^1,2, 刘诗琦^1,2, 潘懋^1,2,†, 雷征东³

1. 北京大学地球与空间科学学院造山带与地壳演化教育部重点实验室, 北京 100871 2. 北京大学石油与天然气研究中心, 北京 100871 3. 中国石油勘探开发研究院, 北京100083

收稿日期:2018-05-15 修回日期:2018-06-12 出版日期:2019-07-20 发布日期:2019-07-20
通讯作者: 潘懋, E-mail: panmao(at)pku.edu.cn
基金资助:
国家科技重大专项(2017ZX05013-002)和中国石油勘探开发研究院科技专项(RIPED-2016-JS-276)资助

Research of Crustal Stress Simulation Using Finite Element Analysis Based on Corner Point Grid

LIU Yuyang^1,2, LIU Shiqi^1,2, PAN Mao^1,2,†, LEI Zhengdong³

1. Key Laboratory of Orogenic Belts and Crustal Evolution (MOE), School of Earth and Space Sciences, Peking University, Beijing 100871
2. Institute of Oil & Gas, Peking University, Beijing 100871
3. Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing 100083

Received:2018-05-15 Revised:2018-06-12 Online:2019-07-20 Published:2019-07-20
Contact: PAN Mao, E-mail: panmao(at)pku.edu.cn

摘要/Abstract

摘要：

设计并实现三维角点网格模型的现今地应力有限元模拟方法。利用角点网格, 建立储层三维精细模型。应用网格转换算法, 将网格转换为对应的三维有限元网格模型, 采用有限元法模拟地应力场的分布。采用网格转换逆向方法, 将模型重新采样至对应的角点网格地质模型, 为后续数值模拟等流程提供数据支持, 从而保证流程的连续性和数据的一致性。通过X工区和Y工区两个油田实例数据, 模拟工区应力场分布。对比分析表明, 模拟值与实测值匹配性较好, 证明了方法的准确性和有效性。

关键词: 地应力, 角点网格, 有限元网格, 网格转换

Abstract:

The development of stress finite element analysis approach based on 3D corner-point grid can establish accurate crustal stress field. Firstly, corner-point grid is employed to establish the detailed structure and attribute model of reservoir. Secondly, grid conversion algorithm is applied to convert corner-point grid to corresponding finite-element grid. Then, finite element analysis is used to get attribute model based on finite-element grid which reflects the distribution of crustal stress. Lastly, grid conversion algorithm is operated to reverse the attribute model to another format which is based on corner-point grid for subsequent analysis. Thus, the procedure continuity and data consistency has been proved by this approach. Furthermore, real data collected from oilfield X and Y are employed to simulate stress distribution and the validity and accuracy of the proposed approach can be verified by comparison between simulation results and real data.

Key words: crustal stress, corner-point grid, finite-element grid, grid conversion

刘钰洋, 刘诗琦, 潘懋, 雷征东. 基于三维角点网格模型的现今地应力有限元模拟[J]. 北京大学学报自然科学版, 2019, 55(4): 643-653.

LIU Yuyang, LIU Shiqi, PAN Mao, LEI Zhengdong. Research of Crustal Stress Simulation Using Finite Element Analysis Based on Corner Point Grid[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2019, 55(4): 643-653.

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链接本文: https://xbna.pku.edu.cn/CN/10.13209/j.0479-8023.2019.020

https://xbna.pku.edu.cn/CN/Y2019/V55/I4/643

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基于三维角点网格模型的现今地应力有限元模拟

Research of Crustal Stress Simulation Using Finite Element Analysis Based on Corner Point Grid

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