Guang-Jin Chen
China University of Petroleum
Clathrate hydrateDissociation (chemistry)Analytical chemistryAdsorptionOrganic chemistryInorganic chemistryAqueous solutionChemistryMaterials scienceMineralogyHydrateChemical engineeringChromatographyPhase (matter)HydrogenMethaneNatural gasPetroleum engineeringSlurryThermodynamics
240Publications
52H-index
5,465Citations
Publications 245
Newest
#1Li Zhi (Qilu University of Technology)H-Index: 2
#2Yue Zhang (Qilu University of Technology)
Last. Tianduo Li (Qilu University of Technology)H-Index: 1
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ABSTRACT null null The combined injection of kinetic and thermodynamic hydrate inhibitors (KHIs and THIs) is considered as a promising method to prevent the blockage of oil and gas pipelines caused by the accidental formation of methane hydrate. To develop better strategies for enhancing inhibition effects, molecular dynamics simulation is employed to investigate the synergistic mechanism of a KHI and a THI (PVP-A and methanol, respectively). Our results show that the nucleation time is shortene...
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#1Nan Li (China University of Petroleum)H-Index: 11
#2Jie Zhang (China University of Petroleum)H-Index: 1
Last. Guang-Jin Chen (China University of Petroleum)H-Index: 52
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Abstract null null Large-scale simulation can improve the understanding of production behaviour from natural hydrate deposits, especially involving heterogeneous hydrates. In this work, a heterogeneous hydrate bearing sample formed from dissolved gas was depressurized in a 200 L simulator. Gas production along with fluid migration were investigated. 42.7% of the total methane gas in the reactor was produced, and water saturation in the sediment was only reduced from 0.66 to 0.56. Based on the re...
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#1Xiao-Hui WangH-Index: 7
#2Yun ChenH-Index: 1
Last. Guang-Jin ChenH-Index: 52
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Abstract null null An innovative idea of “reservoir reformation” was proposed earlier and verified to be feasible for enhancing methane gas recovery efficiency and CO2 sequestration by constructing an artificial impermeable CO2 hydrate cap between the methane hydrate reservoir and overburden. However, the effects of different factors on the sealing performance and mechanical stability of the CO2 hydrate cap need to be further clarified for the optimization of this new technology. In this study, ...
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#1Peng Xiao (China University of Petroleum)H-Index: 5
#2Jia Li (China University of Petroleum)
Last. Chang-Yu Sun (China University of Petroleum)H-Index: 35
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Abstract null null Fluidizing highly converted hydrate particles is a potential way for continuously producing gas hydrate in gas storage application. However, the fundamental problem is to prevent hydrate agglomeration while keeping a high formation rate. In this study, water-oil systems were used to investigate the feasibility of fluidizing the methane hydrate with fast formation rate. The formation kinetics and the slurry morphology of methane hydrate were systematically studied in the presen...
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#1Cui Jinlong (China University of Petroleum)H-Index: 5
#2Cheng Liwei (China University of Petroleum)H-Index: 1
Last. Xingxun Li (China University of Petroleum)H-Index: 5
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Abstract The spatial difference of hydrate dissociation by depressurization was investigated in an L-shape hydrate simulator to enhance the exploitation efficiency of natural gas hydrates. Hydrates were found to dissociate slower near the mining well than far from the mining well due to the higher water saturation. The mass transfer rate of methane molecules in the water phase was much slower than that in the gas phase. In both vertical and horizontal directions, pore water migrated from the loc...
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#1Cheng Liwei (China University of Petroleum)H-Index: 1
#2Cui Jinlong (China University of Petroleum)H-Index: 5
Last. Guang-Jin Chen (China University of Petroleum)H-Index: 52
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Abstract null null The development of environmental friendly low dose hydrate inhibitors like kinetic hydrate inhibitors (KHIs) is of great significance for the flow assurance in oil&gas production and transportation. In this work, a combined molecular dynamic simulation and experimental verification approach was adopted to increase the efficiency of KHIs development. The inhibition effect of a series of the copolymers (N-vinylpyrrolidone and N-acrylate) on hydrate growth was studied by using bo...
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#1Zhi Li (EPFL: École Polytechnique Fédérale de Lausanne)
#2Yue Zhang (Qilu University of Technology)
Last. Berend Smit (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 110
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#1Jun Chen (Xiangnan University)H-Index: 5
#2Yaosong Zeng (Xiangnan University)H-Index: 1
Last. Fanhua Zeng (Xiangnan University)H-Index: 1
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Abstract In this work, methane hydrate dissociation has been systematically studied in consideration of anti-agglomerant type, water cut, and anti-agglomerant dosage. The anti-agglomerant was sorbitan monolaurate (Span 20), rhamnolipid, and (Span 20 + esters polymer), respectively. Water cut ranged from 5 vol% to 30 vol%, and dosage of anti-agglomerant ranged from 0.5 wt% to 3.0 wt%. The results suggested that Span 20 may act as a dissociated kinetic inhibitor to prevent methane hydrate from dis...
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#1Cheng Liwei (China University of Petroleum)H-Index: 1
#2Cui Jinlong (China University of Petroleum)H-Index: 5
Last. Guang-Jin Chen (China University of Petroleum)H-Index: 52
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Abstract Poly(N-vinylpyrrolidone) (PVP) and PVP-A were selected as typical kinetic hydrate inhibitors (KHIs) to simulate the inhibition processes of methane hydrate formation, where PVP-A is obtained by introducing butyl ester groups into the PVP molecule. The results show that KHIs do not significantly delay the formation of the first complete hydrate cage, but inhibit the nucleation of methane hydrate by retarding the formation and growth of the labile clusters and reducing the stability of ne...
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