The Maximum Amplitude Weighted Integrated Energy Spectra: A New Gauge in Seismic Thin-Bed Interpretation

Journal of Engineering and Technological Sciences

Eko Widi Purnomo¹  Deva Prasad Ghosh¹ 

[1] Center for Seismic Imaging Universiti Teknologi Petronas Malaysia, Perak Darul Ridzuan, Malaysia;

关键词: attribute-combination;    channel;    relative value attribute;    seismic attribute;    thin-bed;    tuning;   

DOI  :  10.5614/j.eng.technol.sci.2015.47.1.2

来源: DOAJ

【 摘 要 】

Some combinations of seismic attributes are superior in detecting thinbed thickness from 3D seismic data. However, their physical unit or meaning can be difficult to determine. Such attributes are considered as relative values. This paper introduces a newly developed relative-value attribute, which was identified to be more sensitive in detecting seismic thin-bed structures. The new attribute was developed based on seismic frequency shifting and amplitude decrease phenomena that occurwhen the seismic wave responds toa thinning bed structure. The new attribute is constructed by multiplying the integrated energy spectra with the relative maximum amplitude. Through a wedge model seismic test it was shown that the new relative-value attribute consistently gave more proportional and linear responses to the thin-bed thickness. The new attribute was examined indelineatinga channelstructure on the basis ofpublic 3D seismic data from Stratton Field, Texas USA and the Group F Reservoir in the Malay Basin, Malaysia. The new attribute delineated the meandering channels featured in those two fields very well.

【 授权许可】

Unknown