A large expanse of mobile shale of variable sizes exist throughout most of the Perdido Fold Belt, especially on the western side of this project’s survey. Due to the low shear (high ductility) of mobile shale, like mobile salt, they form a variety of intrusive and extrusive structures that disrupt the natural connectivity of the strata. Extremely low velocities and densities, compounded by strong absorption of seismic wave energy, make mobile shales a huge challenge for modern seismic imaging. To overcome this challenge, a model building workflow was devised including a procedure for mobile shale definition in addition to the conventional Deepwater supra-salt and subsalt depth imaging approach. Application of this new model building workflow on the Perdido Fold Belt survey demonstrated significant improvements in the final seismic image.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error