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Although the actual reservoir fluid flow may not have an axial symmetry around the well-reservoir contact or around reservoir inhomogeneities (like boundary and faults and composite areas) but still in still in many practical cases the long-term correlation between the flowrate and bottom-hole pressure response can be approximated by a radial flow pressure modelthe reservoir flow tends to become radial after some time which makes a Radial Flow Pressure Diffusion @model (in its general form or in particular BVP solution) a popular diagnostic tool.
Inputs & Outputs
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Equations
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and
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show how the
basic diffusion model parameters impact the pressure response while other diffusion parameters are encoded in
function and play important methodological role as they are used in many algorithms and express-methods of
Pressure Testing.
In many practical cases the reservoir flow tends to become radial after some time which makes a Radial Flow Pressure Diffusion @model (in its general form or in particular BVP solution) a popular diagnostic tool.
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| title | Line Source Solution |
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In case of infinite homogeneous reservoir, produced by a infinitely small vertical well with no skin and no wellbore storage the function has an exact analytical formula, given by exponential integral | LaTeX Math Inline |
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| body | F(z) = - {\rm Ei} (z) |
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(see Line Source Solution (LSS) @model).
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