Enhanced gas recovery by nitrogen injection: The effects of injection velocity during natural gas displacement in consolidated rocks

Abstract

Ti t l e E n h a n c e d g a s r e c ov e ry b y ni t r o g e n inj e c tio n : t h e effe c t s of inj e c tio n v elo city d u ri n g n a t u r al g a s di s pl a c e m e n t in c o n s olid a t e d r o c k s

Investigating the flow behaviour of CO2 and N2 in porous medium using core flooding experiment

“…Thus, the flow profile was uninterrupted, explaining the reason behind its lower longitudinal dispersion coefficient and high CO2 storage with low mixing as expected. This agreed with the works reported by (Abba et al, 2018;Honari et al, 2016;Liu et al, 2018;Mohammed et al, 2020).…”

“…Therefore, selecting the correct injection rate is vital for simultaneous CO2 storage and the EGR process. The dispersivity (α) for the core plug at 30 0 C was recorded as 0.00265 m, less than those reported by (Mohammed et al, 2020;Abba et al, 2018) and within the range written by (Gist et al, 1990;Schulze-Makuch, 2005;Honari et al, 2013). In summary, the application of Eq.…”

“…These fundamental equations were originated based on several works of literature as outlined by (Abba et al, 2017;Abba et al, 2018;Abba et al, 2019;Takahashi & Iwasaki, 1970;Fuller et al, 1966;Newberg & Foh, 1988;Hughes et al, 2012;Mamora and Seo, 2002;Liu et al, 2015;Perkins & Johnston, 1963;Coats et al, 2009;Honari et al, 2013). More information can be obtained in our initial publications (Mohammed et al, 2019;Mohammed et al, 2020).…”

Current Progress and Development Trend of Gas Injection to Enhance Gas Recovery in Gas Reservoirs

“…Table 4 documents the current status of experiments on EGR by N2 injection. In 2020, Mohammed et al [57] believed that the disadvantages of the excessive mixing of CO 2 and the high compression ratio hindered the economic benefit of the whole process, so N 2 was used to conduct displacement experiments in order to determine the optimal injection rate. The results show that the injection rate with a medium Peclet number made the displacement process have a low mixing effect and was more favorable to displacement.…”