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In this case a pressure drop and well flowrate can be roughly related to each other by means of a simple analytical homogeneous reservoir flow model with wellbore and boundary effects neglected.
Since the well radius is neglected the well is modeled as a vertical 0-thickness line sourcing the fluid from a reservoir, giving a model a specific name Line Source Solution.
Inputs & Outputs
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Inputs | Outputs | ||||||||||
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| total sandface rate |
| reservoir pressure | ||||||||
| initial formation pressure | ||||||||||
| transmissibility | ||||||||||
| pressure diffusivity |
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Late-time response | |||||||
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Plots
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Fig. 1. PTA Diagnostic Plot for LSS flow regimepressure response in a close well vicinity (0.1 m) of a 0.1 md reservoir. One can easily see that IARF regime has formed around 0.01 hr (36 s). |
See also
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Physics / Fluid Dynamics / Radial fluid flow / Line Source Solution
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