Experimental Investigation into Gas Hydrate Formation in Sediments with Cooling Method in Three-Dimensional Simulator

Gas hydrate formation behaviors in sediments were investigated in a three-dimensional reactor using the cooling method. The characteristics of the temperature change, the heat transfer, the gas consumption, and the electrical resistance change in the hydrate formation process were studied. The results show that the temperature in the reactor gradually decreases from the near-wall to the center in the cooling process. The gas hydrate preferentially forms in the inner-wall regions of the reactor, which has a low temperature in the cooling process, and then the formation spreads to the surrounding area. On the basis of the balance of energy, it was found that the temperature change was roughly equal to the values calculated in the early stage of the hydrate formation. At the beginning of the hydrate formation, the hydrate formation rates at different places are very different from each other. The gas consumption rate first rises and then falls as the supercooling degree increases during the whole process. Th...

[1]  Stephen A. Holditch,et al.  Natural gas-hydrates — A potential energy source for the 21st Century , 2007 .

[2]  Carolyn A. Koh,et al.  Natural gas hydrates: Recent advances and challenges in energy and environmental applications , 2007 .

[3]  Gang Li,et al.  Experimental Investigation into the Production Behavior of Methane Hydrate in Porous Sediment by Depressurization with a Novel Three-Dimensional Cubic Hydrate Simulator , 2011 .

[4]  George J. Moridis,et al.  Methane hydrate formation and dissociation in a partially saturated core-scale sand sample , 2005 .

[5]  K. Kvenvolden.  Gas hydrates—geological perspective and global change , 1993 .

[6]  B. Buffett,et al.  Formation of gas hydrate from dissolved gas in natural porous media , 2000 .

[7]  Xiao-Sen Li,et al.  Experimental Investigation of Production Behavior of Methane Hydrate under Ethylene Glycol Injection in Unconsolidated Sediment , 2007 .

[8]  Joseph W. Wilder,et al.  Interpretation of ethane hydrate equilibrium data for porous media involving hydrate‐ice equilibria , 2002 .

[9]  K. Kvenvolden,et al.  Potential effects of gas hydrate on human welfare. , 1999, Proceedings of the National Academy of Sciences of the United States of America.

[10]  W. Borowski,et al.  Co-existence of gas hydrate, free gas, and brine within the regional gas hydrate stability zone at Hydrate Ridge (Oregon margin): evidence from prolonged degassing of a pressurized core , 2004 .

[11]  H. O. Kono,et al.  Synthesis of methane gas hydrate in porous sediments and its dissociation by depressurizing , 2002 .

[12]  Yi Zhang,et al.  In situ observations by magnetic resonance imaging for formation and dissociation of tetrahydrofuran hydrate in porous media. , 2011, Magnetic resonance imaging.

[13]  Ross Anderson,et al.  Experimental measurement of methane and carbon dioxide clathrate hydrate equilibria in mesoporous silica , 2003 .

[14]  Gang Li,et al.  Gas hydrate equilibrium dissociation conditions in porous media using two thermodynamic approaches , 2008 .

[15]  Sung Chan Nam,et al.  Gas Hydrate Formation in a Variable Volume Bed of Silica Sand Particles , 2009 .

[16]  Hailong Lu,et al.  Raman Spectroscopic Observations on the Structural Characteristics and Dissociation Behavior of Methane Hydrate Synthesized in Silica Sands with Various Sizes , 2008 .

[17]  Marco J. Castaldi,et al.  Experimental Investigation of Methane Gas Production from Methane Hydrate , 2009 .

[18]  T. Ebinuma,et al.  Methane hydrate crystal growth in a porous medium filled with methane-saturated liquid water , 2007 .

[19]  M. Clarke,et al.  A Method To Predict Equilibrium Conditions of Gas Hydrate Formation in Porous Media , 1999 .

[20]  Jeffery B. Klauda,et al.  Global Distribution of Methane Hydrate in Ocean Sediment , 2005 .