Ideal M H D properties for proposed noncircular tokamaks

Helton, F.J.; Greene, J. M.

doi:10.1016/0021-9991(86)90075-6

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…7. It should be made clear that the values of parameters in these figures refer to previous papers (Zhao D. M. et al, 2005 [9] ). From these curves, it can be seen that in the double porosity system, considering wellbore storage and skin effects, the flow process of vertical wells can be classified into seven general sections: wellbore storage, transition region, fracture-radial flow, crossflow from matrix to fracture and total system radial flow.…”

Section: Resultsmentioning

confidence: 77%

A Study on Elliptical Gas Flow in Double Porosity Gas Reservoirs

Zhang¹,

Yang

Xie

2013

AMM

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Elliptical flow exists in the near vertical fracture area, or in anisotropic reservoirs, and the classical radial flow models cannot provide complete analysis for elliptical flow. This paper presents a mathematic model for gas elliptical flow in double porosity gas reservoirs. The differential equation of gas flow is written in Mathieu equation, so that the solution can be expressed also by Mathieu functions. The numerical calculation of relevant Mathieu functions , and its derivative is done to obtain the dimensionless pseudo pressure drop in Laplace space. Property sensitivities of double porosity systems including combination of , parameter related to anisotropy, storativity ratio , interporosity flow coefficient are studied by using the Laplace numerical inversion. The new solution not only includes factors considered for classic solutions in previous papers, but also incorporates the effect of reservoir anisotropy. It is kind of modification and supplementation to classic solutions.

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Section: Resultsmentioning

confidence: 77%