I have low recovery in a depleted field
Once a field is past its prime and waterflooding or gas injection has reached its limits, other solutions need to be considered to increase recovery further.
I have low recovery in a heavy oil reservoir
Heavy oil reservoirs are notoriously difficult to produce and primary recovery is often low even with CHOPS (Cold Heavy Oil Production with Sand).
I have an oil-wet reservoir
Oil wet reservoirs can pose specific challenges for recovery in particular when fractured. Carbonates in particular are often both oil wet and fractured.
I am recycling too much CO2 in my CO2 flood
CO2 injection is a very successful tertiary recovery method which can however suffer from gravity override and early breakthrough due to thief zones. This leads to the need to recycle CO2 which has a negative impact on the economics of the process.