--> Characterizing the Spatial Scale of Structural and Stratigraphic Features Through Fourier Analysis
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AAPG ACE 2018

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Characterizing the Spatial Scale of Previous HitStructuralNext Hit and Previous HitStratigraphicNext Hit Features Through Fourier Analysis

Cody W. Bomberger1, Michael Hofmann1, Brianna Berg1, Jenica Andersen1


1AIM Geoanalytics, Missoula, MT, United States.


July 23 - 25, 2018 – AAPG ACE 2018,

Posted: July 23-25, 2018

Abstract

This study seeks to identify spatial patterns in Previous HitstructuralNext Hit deformation and Previous HitstratigraphicNext Hit undulations that are important to hydrocarbon exploration. Using techniques from Fourier analysis, expanded into two dimensions we identify characteristic scales of Previous HitstructuralNext Hit deformation in structurally controlled basins. Within basins with little to no Previous HitstructuralNext Hit deformation we apply the same techniques from Fourier analysis to identify the characteristic scales of Previous HitstratigraphicNext Hit patterns.

Previous applications of these methods in geosciences include identifying the characteristic length scales in hillslopes with a high potential for landslides and mapping high hazard potential, along with determining the characteristic scales in topography and strain rate fields related to active deformation in the western United States. The identified scales of active deformation were successfully mapped showing regions where the deformation signals are most prominent.

In this study we use a mapped surface from petroleum basins with structurally controlled hydrocarbon accumulations and Previous HitstratigraphicNext Hit horizons from a petroleum basin controlled by Previous HitstratigraphicNext Hit traps as the input datasets for the Fourier analysis. Using the techniques from Fourier analysis, power spectra are created for each of the scenarios. The power spectra indicate the most prominent spatial scales of structures and Previous HitstratigraphicNext Hit undulation in their respective basins. After the characteristic scales are identified, we map their prominence across each basin. The maps of the most prominent Previous HitstructuralNext Hit and Previous HitstratigraphicNext Hit scales indicate the dominant control on Previous HitstructuralNext Hit and Previous HitstratigraphicTop organization and provide information on underdeveloped or bypassed hydrocarbon accumulations.

This new and original re-tooling of established methods from signal processing is a promising tool to complement the exploration for hydrocarbon resources away from current production. These methods have the added benefit of easy automation and the ability to act as an objective spatial analysis.

AAPG Datapages/Search and Discovery Article #90323 ©2018 AAPG Annual Convention and Exhibition, Salt Lake City, Utah, May 20-23, 2018