• journal_title：Geophysics
• Contributor：Simon Luo ; Dave Hale
• Publisher：Society of Exploration Geophysicists
• Date：2013-07-01
• Format：text/html
• Language：en
• Identifier：10.1190/geo2012-0350.1
• journal_abbrev：Geophysics
• issn：0016-8033
• volume：78
• issue：4
• firstpage：O45
• section：Seismic Attributes and Pattern Recognition

Identifying and extracting geologic horizons is useful for interpretation of stratigraphic features as well as analysis of structural deformation. To extract horizons from a seismic image, we developed methods for automatically unfaulting and unfolding an image to restore all horizons to an undeformed, horizontal state. First, using fault surfaces and dip-separation vectors estimated from an image, we interpolated dip-separation vectors at locations between fault surfaces, and then we used the interpolated dip-separation vectors to unfault an image. Then, using a method for automatic seismic image flattening, we unfolded the unfaulted image to obtain a new image in which sedimentary layering is horizontal and also aligned across faults. From this unfaulted and unfolded image, we automatically extracted geologic horizons.