...Tim Bozeman; Will Nelle; Quoc Nguyen Summary Low primary and secondary recoveries of original oil in place from modern unconventional reservoirs beg for utilization of tertiary recovery techniques. Enhanced oil recovery (EOR) via cyclic gas injection (“huff ‘n’ puff”) has indeed enhanced the oil...

... demonstrate the efficiency and robustness of our proposed approach using synthetic and field‐scale examples. We first validate the FMM‐based simulation approach using an example of CO 2 huff ‘n’ puff for a synthetic heterogeneous dual‐porosity model with a multistage hydraulically fractured well. Next, we...

...Wei Yu; Yuan Zhang; Abdoljalil Varavei; Kamy Sepehrnoori; Tongwei Zhang; Kan Wu; Jijun Miao Summary Although numerous studies proved the potential of carbon dioxide (CO 2 ) huff ’n’ puff, relatively few models exist to comprehensively and efficiently simulate CO 2 huff ’n’ puff in a way...

... and huff ’n’ puff gas-injection schemes. In general, huff ’n’ puff injection provides better results in terms of production and economics. Molecular diffusion is found to play a crucial role in continuous gas-injection operations. Conversely, the effect of this phenomenon is negligible in huff ’n’ puff gas...

...Yuan Zhang; Yuan Di; Wei Yu; Kamy Sepehrnoori Summary Carbon dioxide (CO 2 ) injection is an effective enhanced-oil-recovery (EOR) method in unconventional oil reservoirs. However, investigation of the CO 2 huff ’n’ puff process in tight oil reservoirs with nanopore confinement is lacking...

...Yong Wang; Jirui Hou; Zhaojie Song; Dengyu Yuan; Jingwei Zhang; Teng Zhao In-situ carbon dioxide (CO 2 ) huff-‘n’-puff (ISCHP) is a promising enhanced-oil-recovery (EOR) technique that could overcome some major drawbacks associated with continuous CO 2 flooding such as early CO 2 breakthrough, high...

...Xingbang Meng; James J. Sheng; Yang Yu Summary This paper examines the potential of huff ’n’ puff gas-injection method to recover condensate in shale gas–condensate reservoirs by conducting experiments on a shale core. Numerical models were developed to verify experiment results. Our laboratory...

...Cheng Chen; Matthew Balhoff; Kishore K. Mohanty Summary An equation-of-state (EOS) -based compositional reservoir simulator, UT-COMP, is used to simulate both primary recovery and carbon dioxide (CO 2 ) huff ‘n’ puff recovery in a shale matrix typical of the Bakken formation, to investigate...