基于2.5D模型和3D模型的重震联合反演对比分析
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摘要
由于三维可视化显示技术的复杂性和任意形状、多个沉积层模型三维正演计算的复杂性,目前国内外大多采用2.5D模型。本文根据南方海相油气勘探的实际情况,编制了基于3D模型的可视化重震交互反演系统。通过理论模型的验证,对实际资料处理结果的对比,3D重震联合反演克服了2D或2.5D模型难以模拟复杂地质构造带的问题,较好地解决了海相地区地震资料品质差、信噪比低导致地震解释模糊甚至无法给出解释的困难,取得了明显的地质解释效果。
As for the complexity of 3D visualization displaying technique and the complexity of arbitrary shape and the 3D forward calculation of multi-disposition-layer model,we usually adopt 2.5D model at home and abroad.According to the marine-facies petroleum exploration in the Southern China,this paper complies the visualized combined gravity-seismic inversion system.By the verification of the theoretical model and the comparison with the processed results of the actual data,3D gravity-seismic inversion solves the problems that 2D or 2.5D models are unable to simulate the complex geological structures,and solves the problems that low quality of seismic data and low signal-to-noise ratio led to ambiguous interpretation or even unexplained,and finally gets a good effect on geological interpretation.
As for the complexity of 3D visualization displaying technique and the complexity of arbitrary shape and the 3D forward calculation of multi-disposition-layer model,we usually adopt 2.5D model at home and abroad.According to the marine-facies petroleum exploration in the Southern China,this paper complies the visualized combined gravity-seismic inversion system.By the verification of the theoretical model and the comparison with the processed results of the actual data,3D gravity-seismic inversion solves the problems that 2D or 2.5D models are unable to simulate the complex geological structures,and solves the problems that low quality of seismic data and low signal-to-noise ratio led to ambiguous interpretation or even unexplained,and finally gets a good effect on geological interpretation.
引文
[1]刘天佑.位场勘探数据处理新方法[M].北京:科学出版社,2007.
[2]王一新,廉西京.重力与地震联合解释在石油勘探中的应用[J].石油物探,1983,22(3):34~41.
[3]刘天佑,杨宇山,李媛媛,等.重力、地震联合反演方法确定深层油气藏的分布-以锡林凹陷石炭系分布为例[J].天然气工业,2005,25(5):34~36.
[4]王西文,孟昭泰,张工会,等.重力、地震联合反演在研究含油气盆地构造中的应用[J].石油地球物理勘探,1991,26(2):201~209.
[5]汪宏年,张文生.层状介质中重力、地震联合反演的迭代算法[J].石油地球物理勘探,1993,28(2):153~165.
[6]冯锐,陶裕录.地震-重力联合反演中的非块状一致性模型[J].地球物理学报,1993,36(4):463~475.
[7]魏伟,吴招才,刘天佑.基于AutoCAD平台三维可视化规则几何形体磁场反演[J].工程地球物理学报,2006,3(6):54~59.
[8]杨宇山,刘天佑,李媛媛.任意形状地质体数值积分法重磁场三维可视化反演[J].地质与勘探,2005,42(5):79~83.
[2]王一新,廉西京.重力与地震联合解释在石油勘探中的应用[J].石油物探,1983,22(3):34~41.
[3]刘天佑,杨宇山,李媛媛,等.重力、地震联合反演方法确定深层油气藏的分布-以锡林凹陷石炭系分布为例[J].天然气工业,2005,25(5):34~36.
[4]王西文,孟昭泰,张工会,等.重力、地震联合反演在研究含油气盆地构造中的应用[J].石油地球物理勘探,1991,26(2):201~209.
[5]汪宏年,张文生.层状介质中重力、地震联合反演的迭代算法[J].石油地球物理勘探,1993,28(2):153~165.
[6]冯锐,陶裕录.地震-重力联合反演中的非块状一致性模型[J].地球物理学报,1993,36(4):463~475.
[7]魏伟,吴招才,刘天佑.基于AutoCAD平台三维可视化规则几何形体磁场反演[J].工程地球物理学报,2006,3(6):54~59.
[8]杨宇山,刘天佑,李媛媛.任意形状地质体数值积分法重磁场三维可视化反演[J].地质与勘探,2005,42(5):79~83.
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