The Optimization of CO2 Huff and Puff Well Location in Ultra-Low Permeability Reservoir

The oil recovery of CO2 huff and puff well in ultra-low permeability reservoir is low. It is necessary to take measures to increase the development benefit. So the relevant development examples and theoretical research are taken into account in this paper, and according to liquid property and reservoir characteristics, the screening and evaluating system and grading evaluation standard of CO2 huff and puff well location is established. Based on fuzzy comprehensive evaluation, screening steps of CO2 huff and puff well location in ultra-low permeability reservoir is also established. The effect of the method has been proved by field practice. The result provides theoretical and technological support. And it provides reference for similar reservoirs.