Introduction to Remedial Cementation
The main reasons for using remedial cementation procedures are to:
- abandon specific reservoirs in a multiple reservoir completed well
- seal off all perforations when abandoning a well to make sure crossflow between reservoirs is impossible
- repair defective casing or liner cement jobs
- repair casing leaks
- isolate specific zones within reservoirs (to achieve lower gas / oil ratios, water / oil ratios, etc)
- casing patch
- tie back
- Temporary abandon.
Types of Remedial Cementation
Three types of remedial cementation . . .