CO2 Utilization and Sequestration in Organic and Inorganic Nanopores During Depressurization and Huff-n-Puff Process

被引:0
作者
Guo, Jiadong [1 ]
Kong, Shaoqi [1 ]
Li, Kunjie [2 ]
Ren, Guoan [3 ]
Yang, Tao [4 ]
Dong, Kui [1 ]
Liu, Yueliang [5 ,6 ,7 ]
机构
[1] Taiyuan Univ Technol, Coll Min Engn, Taiyuan 030024, Peoples R China
[2] State Key Lab Coaland CBM Comining, Taiyuan 030032, Peoples R China
[3] Jin Chuang Investment Co Ltd, Taiyuan 030000, Peoples R China
[4] North China Inst Sci & Technol, Sch Mine Safety, Beijing 101601, Peoples R China
[5] China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
[6] China Univ Petr, Coll Petr Engn, Beijing 102249, Peoples R China
[7] China Univ Petr, Coll Carbon Neutral Future Technol, Beijing 102249, Peoples R China
基金
中国国家自然科学基金;
关键词
shale gas; pressure drawdown; organic nanopores; CO2 huff and puff; CO2; sequestration; SALINE LACUSTRINE SHALE; OIL-RECOVERY; HEAVY-OIL; CARBON; ADSORPTION; WATER; DIFFUSION; MODEL; EOR; ISOTHERMS;
D O I
10.3390/nano14211698
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
CO2 injection in shale reservoirs is more suitable than the conventional recovering methods due to its easier injectivity and higher sweep efficiency. In this work, Grand Canonical Monte Carlo (GCMC) simulation is employed to investigate the adsorption/desorption behavior of CH4-C4H10 and CH4-C4H10-CO2 mixtures in organic and inorganic nanopores during pressure drawdown and CO2 huff and puff processes. The huff and puff process involves injecting CO2 into the micro- and mesopores, where the system pressure is increased during the huffing process and decreased during the puffing process. The fundamental mechanism of shale gas recovery using the CO2 injection method is thereby revealed from the nanopore-scale perspective. During primary gas production, CH4 is more likely to be produced as the reservoir pressure drops. On the contrary, C4H10 tends to be trapped in these organic nanopores and is hard to extract, especially from micropores and inorganic pores. During the CO2 huffing period, the adsorbed CH4 and C4H10 are recovered efficiently from the inorganic mesopores. On the contrary, the adsorbed C4H10 is slightly extracted from the inorganic micropores during the CO2 puffing period. During the CO2 puff process, the adsorbed CH4 desorbs from the pore surface and is thus heavily recovered, while the adsorbed C4H10 cannot be readily produced. During CO2 huff and puff, the recovery efficiency of CH4 is higher in the organic pores than that in the inorganic pores. More importantly, the recovery efficiency of C4H10 reaches the highest levels in both the inorganic and organic pores during the CO2 huff and puff process, suggesting that the CO2 huff and puff method is more advanced for heavier hydrocarbon recovery compared to the pressure drawdown method. In addition to CO2 storage, CO2 sequestration in the adsorbed state is safer than that in the free state. In our work, it was found that the high content of organic matter, high pressure, and small pores are beneficial factors for CO2 sequestration transforming into adsorbed state storage.
引用
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页数:18
相关论文
共 56 条
[1]  
Adekunle O., 2014, SPE 169077
[2]  
Ahmad M, 2016, INT CONF AEROSP SCI
[3]   A successful methanol treatment in a gas/condensate reservoir: Field application [J].
Al-Anazi, HA ;
Walker, JG ;
Pope, GA ;
Sharma, MM ;
Hackney, DF .
SPE PRODUCTION & FACILITIES, 2005, 20 (01) :60-69
[4]  
[Anonymous], 2006, Am. Assoc. Pet. Geol. Search Discov
[5]  
[Anonymous], 2017, Annual Energy Outlook 2017 with projections to 2050
[6]   Produced-Fluid Composition Redistribution in Source Rocks for Hydrocarbon-In-Place and Thermodynamic Recovery Calculations [J].
Baek, Seunghwan ;
Akkutlu, I. Yucel .
SPE JOURNAL, 2019, 24 (03) :1395-1414
[7]   QUADRUPOLE MOMENT OF CARBON DIOXIDE MOLECULE [J].
BUCKINGHAM, AD ;
DISCH, RL .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1963, 273 (1352) :275-+
[8]   Comprehensive evaluation of the organic-rich saline lacustrine shale in the Lucaogou Formation, Jimusar sag, Junggar Basin, NW China [J].
Cao, Yan ;
Jin, Zhijun ;
Zhu, Rukai ;
Liu, Kouqi ;
Bai, Jianing .
ENERGY, 2024, 294
[9]   Pore systems and their correlation with oil enrichment in various lithofacies of saline lacustrine shale strata [J].
Cao, Yan ;
Jin, Zhijun ;
Zhu, Rukai ;
Liu, Kouqi .
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2024, 282
[10]  
Cherian B.V ..., 2012, SPE 152177, P506