虚拟现实技术在南堡凹陷综合地震解释中的应用
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摘要
虚拟现实技术综合运用计算机图形学、计算机视觉、心理学、人工智能、传感器、网络通讯等多方面技术,在计算机中营造一个虚拟的环境,通过实时的、立体的三维图形显示、声音模拟、人与虚拟环境的自然实时交互,使用户产生身临其境的真实感觉。本文依托虚拟现实平台,利用其功能优势,针对南堡凹陷复杂断裂带进行构造精细解释、岩性体识别、钻井轨迹优化等方面的应用,得到以下认识:①利用虚拟现实技术在高信噪比地震资料区开展构造精细解释是一种快速、高效的方法,但在信噪比低的地震资料区虚拟现实技术难以应用;②虚拟现实技术可以快速识别一些特殊的异常砂体和岩性圈闭,并可以快速查清其分布范围及构造形态,但对岩性圈闭内部刻画较困难;③虚拟现实系统具有多CPU并行属性处理功能,计算属性速度快,有利于属性分析,但软件中提供的属性种类和约束条件较少;④虚拟现实系统提供的谱分解模块只能进行切片计算,而不能进行体计算;⑤虚拟现实系统的三维可视化功能能够快速优化钻井轨迹,为钻井部署提供直观的依据。
The virtual-reality technique is multiple techniques integrative using computer graphics,computer visual,psychology,artificial intelligence,sensor and network communication,creates a visual environment in computer,and makes the user have participating sense by himself through real-time,stereo 3-D figure show,voice analogue and naturally real-time interchanging between the human and visual environment.Based on virtual-reality platform,the paper uses the superiority in function of virtual-reality technique to carry out fine structural interpretation,lithologic volume identification and drill-trail optimization in complex fault zone of Nanpu sage and got following knowledge: ①using virtual-reality technique to develop fine structural interpretation in the area of seismic data with higher S/N ratio is rapid and high-efficient method,but it is difficult to use the technique in the area of seismic data with lower S/N ratio;②the virtual-reality technique can rapidly recognize some special anomalous sand body and litologic traps,and classify the distribution range and structural feature,but is difficult to describe the interior of lithologic trap;③the virtual-reality technique has processing function of multiple CPU parallel attribute,the speed of commutating attributes is fast,which is of benefit for attributes analysis,but the attributes type and constraint condition provided by the software is fewer;④the spectrum decomposition module in virtual-reality system only carries out slice computation,cannot carry out volume computation;⑤the function of 3-D visualization in virtual-reality system can rapidly optimize the drilling trail,providing straightforward foundation for drilling deployment.
The virtual-reality technique is multiple techniques integrative using computer graphics,computer visual,psychology,artificial intelligence,sensor and network communication,creates a visual environment in computer,and makes the user have participating sense by himself through real-time,stereo 3-D figure show,voice analogue and naturally real-time interchanging between the human and visual environment.Based on virtual-reality platform,the paper uses the superiority in function of virtual-reality technique to carry out fine structural interpretation,lithologic volume identification and drill-trail optimization in complex fault zone of Nanpu sage and got following knowledge: ①using virtual-reality technique to develop fine structural interpretation in the area of seismic data with higher S/N ratio is rapid and high-efficient method,but it is difficult to use the technique in the area of seismic data with lower S/N ratio;②the virtual-reality technique can rapidly recognize some special anomalous sand body and litologic traps,and classify the distribution range and structural feature,but is difficult to describe the interior of lithologic trap;③the virtual-reality technique has processing function of multiple CPU parallel attribute,the speed of commutating attributes is fast,which is of benefit for attributes analysis,but the attributes type and constraint condition provided by the software is fewer;④the spectrum decomposition module in virtual-reality system only carries out slice computation,cannot carry out volume computation;⑤the function of 3-D visualization in virtual-reality system can rapidly optimize the drilling trail,providing straightforward foundation for drilling deployment.
引文
[1]王强,李玲等编.地震资料人机交互解释.北京:石油工业出版社,1995
[2]王宏琳.地球物理勘探软件平台技术.北京:石油工业出版社,1999
[2]王宏琳.地球物理勘探软件平台技术.北京:石油工业出版社,1999
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