Non-
seismic
Constraints in Structurally Complex Regions
Abstract
Understanding structurally complex regions with a sole geophysical method can pose some challenges, especially, when coupled with extensive igneous activity. Fold belt areas which involve reactivation of basement with high angle faults, detachment folds and out-of-sequence thin-skinned thrusts are difficult to image even with new seismic
acquisition and processing techniques. The addition of non-
seismic
methods for exploration purposes have proven valuable in aiding
interpretation
, especially at deep basement levels. We present examples from structurally complex regions in Colorado and the Neuquén Basin, which combine the use of non-
seismic
techniques to help understand the hydrocarbon basin and its relationship with the basement. These examples integrate gravity and magnetic
data
with existing well and
seismic
data
, as well as remote sensing
data
to help identify the shallow structure. An example from Colorado also includes airborne Electro-Magnetic (EM)
data
, along with ground Magnetotellurics (MT)
data
, which aid in identifying the overall basin architecture. The integration of these datasets are used to produce a series of 2D forward models, structural restorations are used as inputs where available, and 3D inversion models to help understand the structural complexities of the regions. This integrated
interpretation
approach, combining multi-physics and geological
data
analysis, provides a more robust understanding of the geology of a basin, especially in complex tectonic regions where
seismic
exploration can be challenging.
AAPG Datapages/Search and Discovery Article #90291 ©2017 AAPG Annual Convention and Exhibition, Houston, Texas, April 2-5, 2017