微地震压裂监测可视化建模及体积计算仿真
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摘要
在致密储层油气开发过程中,采用压裂微地震监测技术,监测压裂产生裂缝的方位及形态,建立模型并实现可视化是改进井网部署实现增产的一项重要措施。微地震压裂监测技术作为一项重要新技术近年来被广泛地关注,而可视化分析技术是评判压裂效果的一种直观分析手段,利用分散的微地震事件球构建压裂裂缝模型并使用三维空间数值模拟算法可以快速地计算裂缝体积,可以进一步估算裂缝模型的压裂改造体积,这是井网优化的重要参考依据。本文利用OpenGL可视化库,基于TetGen算法实现了压裂裂缝的可视化建模及体积计算,使用C++语言实现了交互系统,可自动或手动有选择地应对各类裂缝模型生成任务,反馈精确体积。仿真表明我们的系统建模高效,计算准确率和精度达到石油天然气开发使用的标准,现已在实际软件中得到开发应用。
In the process of dense reservoirs exploitation and development in oil-gas fields,we often use microseismic fracturing monitoring technology to increase production.It is important for us to improve the deployment of operating well networks by monitoring the orientation and shape of fractures generated by fracturing technology,modeling the fractures and achieving visualization. As a new technology, microseismic fracturing monitoring technology has been widely concerned in recent years, and visualization analysis technology is an intuitive analysis method for fracturing effect evaluation. The microseismic fracture model is constructed by using scattered microseismic event balls. The three-dimensional numerical simulation algorithm can be used to calculate the fracture volume quickly, and the fracture reconstruction volume can be further estimated, which is an important reference for well networks deployment. In this paper, OpenGL visualization library is used to realize model visualization and volume calculation of the fracture based on the TetGen splitting algorithm. The interactive system is realized by C++ language, various fracture model generation tasks can be automatically or manually selected and then feedback accurate volume. The simulation results show that our modeling system is efficient, the calculation accuracy has reached the standard of petroleum and natural gas development, and it has been applied in practical software.
In the process of dense reservoirs exploitation and development in oil-gas fields,we often use microseismic fracturing monitoring technology to increase production.It is important for us to improve the deployment of operating well networks by monitoring the orientation and shape of fractures generated by fracturing technology,modeling the fractures and achieving visualization. As a new technology, microseismic fracturing monitoring technology has been widely concerned in recent years, and visualization analysis technology is an intuitive analysis method for fracturing effect evaluation. The microseismic fracture model is constructed by using scattered microseismic event balls. The three-dimensional numerical simulation algorithm can be used to calculate the fracture volume quickly, and the fracture reconstruction volume can be further estimated, which is an important reference for well networks deployment. In this paper, OpenGL visualization library is used to realize model visualization and volume calculation of the fracture based on the TetGen splitting algorithm. The interactive system is realized by C++ language, various fracture model generation tasks can be automatically or manually selected and then feedback accurate volume. The simulation results show that our modeling system is efficient, the calculation accuracy has reached the standard of petroleum and natural gas development, and it has been applied in practical software.
引文
[1] 宋海权.基于Qt的地震数据可视化软件的研究与实现[D].西安:西南交通大学,2010.
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[7] 吕世超.微地震有效事件识别及自动定位方法研究[D].东营:中国石油大学,2011.
[8] 荆永滨,王李管,贾明涛.基于TetGen的复杂FLAC3D模型可视化建模方法[J].岩土力学,2010,31(8):2655-2660.
[2] 张友加.地震数据可视化技术研究及应用[D].长沙:湖南大学,2009.
[3] 刘伟.微地震压裂裂缝监测方法及应用[D].成都:成都理工大学,2012.
[4] 侯亚娟,高山,祝国瑞.基于体素的体积计算在地质领域的应用[J].工程图学学报,2005,26(1):65-69.
[5] 杨文广.基于WebService的地震数据可视化设计与实现[J].网络新媒体技术,2017,6(6):58-63.
[6] 王爱国.微地震监测与模拟技术在裂缝研究中的应用[D].东营:中国石油大学,2008.
[7] 吕世超.微地震有效事件识别及自动定位方法研究[D].东营:中国石油大学,2011.
[8] 荆永滨,王李管,贾明涛.基于TetGen的复杂FLAC3D模型可视化建模方法[J].岩土力学,2010,31(8):2655-2660.