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bodyL


distance between the pint of flow variation and point of pressure response,

this is going to be well radius

LaTeX Math Inline
bodyL=r_w
for Self-Pulse Test

and distance between generating and receiving well

LaTeX Math Inline
bodyL= \sqrt{ \left({\bf r}_{\rm Generator} - {\bf r}_{\rm Receiver} \right ) ^2}
for Pressure Pulse Interference Test


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\delta = \frac{\pi}{8} + \frac{L}{\sqrt{\chi \, T}}



phase shift related to the caused by pressure response delay to the flowrate variation


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p_0 = \frac{q_0}{\sigma} ...



pressure response to the flowrate variation


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\sigma = \left< \frac{k}{\mu} \right> h



transmissbility


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\chi = \left< \frac{k}{\mu} \right> \frac{1}{c_t \, \phi}



pressure diffusivity

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