2024
DOI: 10.3390/pr12122920
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Steam-Alternating CO2/Viscosity Reducer Huff and Puff for Improving Heavy Oil Recovery: A Case of Multi-Stage Series Sandpack Model with Expanded Sizes

Lei Tao,
Guangzhi Yin,
Wenyang Shi
et al.

Abstract: Aiming at the challenges of rapid heat dissipation, limited swept efficiency, and a rapid water cut increase in steam huff and puff development in heavy oil reservoirs, an alternating steam and CO2/viscosity reducer huff and puff method for IOR was proposed. In this work, the effect of CO2 on the physical properties of heavy oil was evaluated, and the optimal concentration of viscosity reducer for synergistic interaction between CO2 and the viscosity reducer was determined. Next, novel huff and puff simulation… Show more

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