As one of the largest polyacrylamide polymer manufacturers in the world we understand how critical the choice of chemicals is to the overall success of EOR operations. As part of Kemira MaxXtract cEOR solutions, we offer KemSweep polymers for polymer flooding.
To ensure optimal injectivity and sweep efficiency, we focus on four key field conditions:
Salinity and divalent ion concentration of injection and formation fluids along with reservoir temperatures affect the viscosity and stability of the solution. Harsher conditions typically require sulphonated polymers. Molecular weight selection is driven by reservoir permeability range.
|KemSweep A-5257||Low||None||Low – high *||Low|
|KemSweep A-5271||Medium||None||Low – high *||Low|
|KemSweep A-5265||High||None||Low – high *||Low|
|KemSweep A-5365||Very high||None||Low – high *||Low|
|KemSweep A-6000||Ultra high||None||Low – high *||Low|
|KemSweep A-5300 series||Low – high||Low – medium||Low||High|
|KemSweep A-5900 series||Low – high||Low – high||High||High|
|KemSweep A-5291||Medium||Very high||High||High|
* Suitable for high-temperature reservoirs in the absence of divalent ions.