Publications

CO2 Huff and Puff treatment has been widely used worldwide to increase well productivity. The benefits of CO2 injection into the formation are viscosity reduction (oil swelling), relative permeability shifts, and resulting significant oil extraction. The treatment involves injection, soaking, and a production period where each step has critical key parameters to be maintained to achieve treatment objectives. The challenges of CO2 Huff and Puff treatment are distinguished by reservoir & reservoir fluid characteristics, operational concerns, CO2 handling, material & logistics availability, and the limitation of references to anticipate each treatment execution. In Indonesia, the implementation of CO2 Huff and Puff is still considered new. Hence, the best practice, lessons learned, and success story information are minimal. The effective and impactful results of CO2 Huff and Puff treatment are determined by technical design and reservoir characteristic process, equipment design selection, and operational execution. This paper aims to share the best practice of CO2 Huff and Puff treatment execution from a perspective of CO2 handling, phase behavior, equipment, operational design, parameters to control, and challenges & opportunities based on 2 treated wells in Jatibarang Field, Indonesia. In this successful case, 250 tons of CO2 liquid were injected at 80 TPD to formation in the gas phase for 4 days of operation, resulting in a significant gain in net oil production.