Transport in Porous Media

, Volume 79, Issue 3, pp 443–468 | Cite as

The Experimental and Numerical Studies on Gas Production from Hydrate Reservoir by Depressurization

  • Yuhu BaiEmail author
  • Qingping Li
  • Ying Zhao
  • Xiangfang Li
  • Yan Du


A set of experimental system to study hydrate dissociation in porous media is built and some experiments on hydrate dissociation by depressurization are carried out. A mathematical model is developed to simulate the hydrate dissociation by depressurization in hydrate-bearing porous media. The model can be used to analyze the effects of the flow of multiphase fluids, the kinetic process and endothermic process of hydrate dissociation, ice-water phase equilibrium, the variation of permeability, convection and conduction on the hydrate dissociation, and gas and water productions. The numerical results agree well with the experimental results, which validate our mathematical model. For a 3-D hydrate reservoir of Class 3, the evolutions of pressure, temperature, and saturations are elucidated and the effects of some main parameters on gas and water rates are analyzed. Numerical results show that gas can be produced effectively from hydrate reservoir in the first stage of depressurization. Then, methods such as thermal stimulation or inhibitor injection should be considered due to the energy deficiency of formation energy. The numerical results for 3-D hydrate reservoir of Class 1 show that the overlying gas hydrate zone can apparently enhance gas rate and prolong life span of gas reservoir.


Depressurization Gas hydrate reservoir Numerical simulation Experimental study 


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Yuhu Bai
    • 1
    Email author
  • Qingping Li
    • 1
  • Ying Zhao
    • 2
  • Xiangfang Li
    • 3
  • Yan Du
    • 4
  1. 1.Technology Research DepartmentChina National Offshore Oil Corporation, Research CenterBeijingChina
  2. 2.Institute of mechanics, Chinese Academy of SciencesBeijingChina
  3. 3.Faculty of Petroleum EngineeringChina University of PetroleumBeijingChina
  4. 4.Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences GuangzhouGuangdongChina

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