Greater, greener recovery: A new approach to natural gas clean-up

摘要

For decades, energised fluids containing carbon dioxide (CO_2), in various formulations, have been used successfully in hydraulic fracturing and individual well soak treatments known as a Huff'n Puff (HNP) to boost hydrocarbon recovery. But although energised fluids undoubtedly improve recovery, they carry with them the potential to also initially increase the amount of CO_2 contained in the early flowback natural gas. When this occurs to the point that CO_2 concentrations exceed natural gas sales pipeline specifications, the most common practice is to flare off the gas until the concentration of CO_2 within the gas reduces to acceptable levels.