Figure 7
From: Wastewater leakage in West Texas revealed by satellite radar imagery and numerical modeling

Stratigraphy, well completion, and possible pathways for upward migration of wastewater. Possible leakage caused by (a) failed production casing, (b) sealing problem - through the space between the casing and the wellbore, (c) sealing problem - through vertical channel in the faulty cement, and (d) fault and fracture systems. The figure was created using Adobe Illustrator CC (2015.0.0 release) licensed by Southern Methodist University.