Adsorption Properties of Hydrocarbons (n-Decane, Methyl Cyclohexane and Toluene) on Clay Minerals: An Experimental Study

Jie Zhang, Shuangfang Lu, Junqian Li, Pengfei Zhang, Haitao Xue, Xu Zhao and Liujuan Xie
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Jie Zhang: Research Institute of Unconventional Oil & Gas and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, China
Shuangfang Lu: Research Institute of Unconventional Oil & Gas and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, China
Junqian Li: Research Institute of Unconventional Oil & Gas and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, China
Pengfei Zhang: Research Institute of Unconventional Oil & Gas and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, China
Haitao Xue: Research Institute of Unconventional Oil & Gas and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, China
Xu Zhao: Exploration & Production Research Institute SINOPEC, Beijing 100083, China
Liujuan Xie: Research Institute of Unconventional Oil & Gas and Renewable Energy, China University of Petroleum (East China), Qingdao 266580, China

Energies, 2017, vol. 10, issue 10, 1-14

Abstract: Adsorption of hydrocarbons may significantly affect hydrocarbon migration in unconventional reservoirs. Clay minerals form the primary adsorbent surfaces for hydrocarbons adsorbed in mudstone/shale. To study the adsorption properties of hydrocarbons (n-decane (C 10 H 22 ), methyl cyclohexane (C 7 H 14 ) and toluene (C 7 H 8 )) on clay minerals (i.e., cookeite, ripidolite, kaolinite, illite, illite/smectite mixed-layer, Na-montmorillonite and Ca-montmorillonite), hydrocarbon vapor adsorption (HVA) tests were conducted at 298.15 K. The results showed that (i) the adsorption amounts of C 10 H 22 , C 7 H 14 and C 7 H 8 ranged from 0.45–1.03 mg/m 2 , 0.28–0.90 mg/m 2 and 0.16–0.53 mg/m 2 , respectively; (ii) for cookeite, ripidolite and kaolinite, the adsorption capacity of C 10 H 22 was less than C 7 H 14 , which was less than C 7 H 8 ; (iii) for illite, Na-montmorillonite and Ca-montmorillonite, the adsorption capacity of C 10 H 22 was greater than that of C 7 H 8 , and the adsorption capacity of C 7 H 14 was the lowest; (iv) for an illite/smectite mixed-layer, C 7 H 14 had the highest adsorption capacity, followed by C 10 H 22 , and C 7 H 8 had the lowest capacity. Adsorption properties were correlated with the microscopic parameters of pores in clay minerals and with experimental pressure. Finally, the weighted average method was applied to evaluate the adsorption properties of C 10 H 22 , C 7 H 14 and C 7 H 8 on clay minerals in oil-bearing shale from the Shahejie Formation of Dongying Sag in the Bohai Bay Basin, China. For these samples, the adsorbed amounts of C 7 H 14 ranged from 18.03–28.02 mg/g (mean 23.33 mg/g), which is larger than that of C 10 H 22 , which ranges from 15.40–21.72 mg/g (mean 18.82 mg/g). The adsorption capacity of C 7 H 8 was slightly low, ranging from 10.51–14.60 mg/g (mean 12.78 mg/g).

Keywords: hydrocarbon vapor adsorption (HVA); adsorption property; n-decane; methyl cyclohexane; toluene; clay minerals (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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