Influence of Low‐Dosage Hydrate Inhibitors on Methane Clathrate Hydrate Formation and Dissociation Kinetics

2015 ◽  
Vol 3 (7) ◽  
pp. 717-725 ◽  
Author(s):  
Asheesh Kumar ◽  
Tushar Sakpal ◽  
Rajnish Kumar
Keyword(s):  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Dissociation Kinetics ◽  
Methane Clathrate ◽  
Low Dosage

Binary Ethanol−Methane Clathrate Hydrate Formation in the System CH4-C2H5OH-H2O: Confirmation of Structure II Hydrate Formation

2009 ◽  
Vol 113 (28) ◽  
pp. 12598-12601 ◽  
Author(s):  
Keita Yasuda ◽  
Satoshi Takeya ◽  
Mami Sakashita ◽  
Hiroshi Yamawaki ◽  
Ryo Ohmura
Keyword(s):  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Methane Clathrate

Binary Ethanol−Methane Clathrate Hydrate Formation in the System CH4-C2H5OH-H2O: Phase Equilibria and Compositional Analyses

2009 ◽  
Vol 113 (28) ◽  
pp. 12602-12607 ◽  
Author(s):  
Ross Anderson ◽  
Antonin Chapoy ◽  
Hooman Haghighi ◽  
Bahman Tohidi
Keyword(s):  
Phase Equilibria ◽  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Methane Clathrate

Kinetics of Methane Clathrate Hydrate Formation in Water-in-Oil Emulsion

2015 ◽  
Vol 29 (4) ◽  
pp. 2277-2288 ◽  
Author(s):  
Xingang Li ◽  
Chao Chen ◽  
Yingnan Chen ◽  
Yonghong Li ◽  
Hong Li
Keyword(s):  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Oil Emulsion ◽  
Water In Oil Emulsion ◽  
Methane Clathrate ◽  
Kinetics Of

Jump in the Rotational Mobility of Benzene Induced by the Clathrate Hydrate Formation

1995 ◽  
Vol 99 (5) ◽  
pp. 1377-1379 ◽  
Author(s):  
Masaru Nakahara ◽  
Chihiro Wakai ◽  
Nobuyuki Matubayasi
Keyword(s):  
Hydrate Formation ◽  
Clathrate Hydrate ◽  
Rotational Mobility

Testing antifreeze protein from the longhorn beetle Rhagium mordax as a kinetic gas hydrate inhibitor using a high-pressure micro differential scanning calorimeter

2015 ◽  
Vol 93 (9) ◽  
pp. 1025-1030 ◽  
Author(s):  
Nagu Daraboina ◽  
Christine Malmos Perfeldt ◽  
Nicolas von Solms
Keyword(s):  
High Pressure ◽  
Differential Scanning Calorimeter ◽  
Oil And Gas ◽  
Hydrate Formation ◽  
Antifreeze Protein ◽  
Melting Behavior ◽  
Relative Strength ◽  
Operating Pressure ◽  
Longhorn Beetle ◽  
Low Dosage

Low dosage kinetic hydrate inhibitors are employed as alternatives to expensive thermodynamic inhibitors to manage the risk of hydrate formation inside oil and gas pipelines. These chemicals need to be tested at appropriate conditions in the laboratory before deployment in the field. A high pressure micro differential scanning calorimeter HP-μDSC VII (Setaram Inc.) containing two 50 cc high pressure cells (maximum operating pressure 40 MPa; temperature range –40 to 120 °C) was employed to observe methane hydrate formation and decomposition in the presence of hyperactive antifreeze protein from Rhagium mordax (RmAFP) and biodegradable synthetic kinetic inhibitor Luvicap Bio. A systematic capillary dispersion method was used, and this method enhanced the ability to detect the effect of various inhibitors on hydrate formation with small quantities. The presence of RmAFP and Luvicap Bio influence (inhibit) the hydrate formation phenomena significantly. Luvicap Bio (relative strength compared to buffer: 13.3 °C) is stronger than RmAFP (9.8 °C) as a nucleation inhibitor. However, the presence RmAFP not only delays hydrate nucleation but also reduces the amount of hydrate formed (20%–30%) after nucleation significantly. Unlike RmAFP, Luvicap Bio promoted the amount of hydrate formed after nucleation. The superior hydrate growth inhibition capability and predictable hydrate melting behavior compared to complex, heterogeneous hydrate melting with Luvicap Bio shows that RmAFP can be a potential natural green kinetic inhibitor for hydrate formation in pipelines.

Impact of Low-Dosage Inhibitors on Clathrate Hydrate Stability

2010 ◽  
Vol 287 (1) ◽  
pp. 168-176 ◽  
Author(s):  
Tatiana Kuznetsova ◽  
Alla Sapronova ◽  
Bjørn Kvamme ◽  
Klaus Johannsen ◽  
Jarle Haug
Keyword(s):  
Clathrate Hydrate ◽  
Low Dosage ◽  
Hydrate Stability
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