ActiveEOR® for Post-CHOPS

initiate secondary recovery and bring new life to declining wells

ActiveEOR® delivers energy to post-CHOPS reservoirs in the form of heat and gas. An ActiveEOR® slurry is injected cyclically (via a Huff n’ Puff process) and leverages the wormhole network to distribute the material throughout the oil zone. No costly capital investments or special well site equipment are needed. Payback is much faster than other chemical EOR techniques. 

The primary mechanism for improved recovery is a viscosity reduction via heat and pressure. Temperature and pressure effects extend along the near-wormhole region, with an significant increase in temperature and pressure. A soluble alkali silicate is also generated to help reduce formation IFT and increase oil mobility. Typical operations include 1-day injection, up to 3-day soak, and 120-day production time.

ActiveEOR® increases recovery up to 50% over primary CHOPS production. This post-CHOPS process can increase well productivity lifetime for 5-10 years, adding 25-50% to recoverable reserves.


CHOPS pilot trials are underway. For more information about ActiveEOR® or to participate in pilot trials, contact us at