Definition - What does Improved Recovery mean?
Improved Recovery is a method used to recover the additional oil left after rock compressibility, fluid expansion, pressure decline, natural gasdrive or waterdrive and gravitational drainage. The process involves the implementation of several artificial techniques to increase the amount of fluids which can be extracted from oilfields. There are three dominant techniques that are used for Improved Recovery, i.e., gas injection, chemical injection and thermal injection. It also includes gas cycling, pressure maintenance, enhanced recovery and secondary recovery.
Petropedia explains Improved Recovery
Improved Recovery is also known as improved oil recovery, enhanced oil recovery and tertiary recovery. It is a process like gasflooding or waterflooding which adds energy to reservoirs for increasing the recovery factor and stimulating the oil production. The process has three main techniques:
- Gas Injection – It is also called miscible flooding and is the most used technique in Improved Recovery. The process induces miscible gases into reservoirs.
- Chemical Injection – In this technique, several chemicals are induced into reservoirs so as to reduce the surface tension and aid in the mobility of the fluids.
- Thermal Injection – In this technique, several methods are used for heating the oil in the formation so as to reduce its viscosity and decrease the mobility ratio by vaporizing the oil.