This blog shows that slickenlines are scratches on the surfaces of shear fractures. The state of stress on a shear fracture can be predicted by Mohr circles.
Importance of Slickenlines
Imaging a Fault in Valhall Field
Importance of Slickenlines
Picking Faults in Wells
Faults are usually picked on seismic data. Given that small faults can be as important in field development, well logs should be checked for evidence of faulting.
Here we look at common fault-related explanations for thickness variations between wells and how to create a simple cumulative dip plot of bedding to detect faults.