Kinetic simulation of CO2 flooding of methane hydrates

Jyoti Phirani, Kishore K. Mohanty

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

18 Citations (Scopus)


Finding new sources of energy and curbing global warming are two of the most important current problems. CO2 can be injected into methane-hydrate reservoirs to produce methane and sequester CO2 simultaneously. CO2 replaces methane in the clathrate cages producing methane. The goal of this work is to develop a compositional, thermal, and kinetic simulator to design and interpret lab and field scale CO2 flooding experiments of methane-hydrate in porous media. Five components (water, methane, CO2, CH4-hydrate, CO2-hydrate) and six phases (aqueous, gas, liquid CO2-rich phase, CO 2-hydrate, CH4-hydrate and ice) are considered. The equations are spatially discretized with a finite volume difference method and are solved with a Newton-Raphson method in a fully implicit manner. Primary variable switch method (PVSM) is used to track the phase transitions. 1-D core scale simulations shows that the energy produced from CO2-hydrate formation is utilized for methane-hydrate dissociation. The methane-hydrate dissociation front moves at a slow rate of approximately 1/40 cm/hr for the kinetics assumed in the base case. High mole fractions of CO2 lead to CO2-hydrate formation and methane-hydrate dissociation. To dissociate methane-hydrate by CO2 injection, either we need to keep the CO2 mole fraction very high in the fluid phase or operate at a relatively lower pressure (shallower reservoirs of methane-hydrates).

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Annual Technical Conference and Exhibition 2010, ATCE 2010
Place of PublicationRichardson, Texas
PublisherSociety of Petroleum Engineers (SPE)
Number of pages17
ISBN (Print)9781617389641
Publication statusPublished - 19 Sept 2010

Publication series

NameProceedings - SPE Annual Technical Conference and Exhibition


  • methane
  • mohanty
  • enhanced recovery
  • hydrate formation


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