2D/3D工区构造成图技术流程探讨

Research on the Flow of Structural Mapping in 2D/3D Work Area

张纪

ZHANG Ji

中国石油化工股份有限公司 上海海洋油气分公司 研究院, 上海 200120

Institute of Shanghai Offshore Petroleum Branch, SINOPEC, Shanghai 200120, China

文章探讨了2D/3D工区的构造成图技术流程,指出了构造成图传统方法中影响成图精度的主要因素,从解决问题入手,提出了相应的平均速度体建立及构造成图流程。对二维工区,采用了"似变速空校"方法,并通过编制空校量板,实现了二维偏移剖面的交点闭合和测点的三维空间偏移归位,提高了成图精度。而对三维工区,则应用了LM的时深转换一体化模块,借助三维可视化技术,结合多种地震地质信息,对平均速度体进行交互式修正。实际应用表明,该流程提高了构造成图的精度和工作效率,是一套省时实用的构造成图技术流程。

This article studied the flow of structural mapping in 2D/3D work area, analysed the primary factors which depress the mapping precision in traditional methods for structural mapping, and then put forward the building of average velocity volume in the mapping flow.With regard to the 2D work area, the "similar variation velocity calibration" was adopted, the time-depth no rm was compiled and the clogging of cross point in 2D offsetting section and map migration for depth structure was realized.All these measures can improve the precision of structure map.According to the 3D work area, we use Depth-team software and 3D vision software, binding with more physical and geological information to correct the average velocity volume interactively.The practical applications show that the new flow improved the precision of structural mapping and it is a technique-advanced, time-efficient and practical flow.

https://doi.org/10.3969/j.issn.1008-2336.2003.z1.014