Chlorine Dioxide (ClO2) EOR in Legacy Hydraulic Fractured Wells. An Alternative to Refrac Operations
More than 200,000 horizontal multifractured wells are currently active across multiple unconventional basins in continental United States. The first completion designs relied on completion practices that had been utilized in conventional reservoirs, and the early wells completed with low proppant/fluid intensity and in many cases cluster/fracture spacing greater than 100 ft. Chlorine Dioxide (ClO₂) was field trialed as a Restimulation/EOR chemistry in a well D&C in 2015 as an alternative to traditional Refrac operations.