Numerical investigation of the decomposition of gas hydrates coexisting with gas in natural reservoirs |
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Authors: | V I Vasil’ev V V Popov G G Tsypkin |
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Institution: | V. I. Vasil’ev, V. V. Popov and G. G. Tsypkin |
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Abstract: | The problem of methane hydrate decomposition in a reservoir saturated with a gas and hydrate mixture is investigated numerically. The results of the numerical simulation and an analytic solution obtained in the linear approximation are compared. It is shown that for high-permeability rocks the convective heat transfer in the near-well space of the reservoir predominates over the conductive transfer. This makes the use of intra-well heaters ineffective. It is found that an increase in the reservoir and well pressures and a decrease in the permeability suppress the formation of an extended hydrate dissociation region. Critical diagrams of existence of the frontal decomposition regime are constructed. |
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Keywords: | flow through a porous medium gas field hydrates dissociation numerical simulation |
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