• Sources:
Mechanical problems (casing leaks)
– Holes caused by corrosion or wear
– Splits caused by flaws, excessive pressure or
formation deformation
– Casing leaks can result in pump failure or stuck
pump
– Typically occurs above top of cement
– Invasion of drilling mud
– After repairing
▪ Check PBTD
▪ May require re-stimulation to remove formation
damage
................................................
• Methods to identify
• Remedial actions
www.karl.nrcce.wvu.edu
