Case Study 5 - Solutions

From the plot and is equal to using this we can

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Unformatted text preview: and is equal to ( . Using this we can calculate the skin value: ( ( ) ) ) The equation based upon experience for the time in which pure wellbore storage end is: ( ) ( ) The equation based upon experience for the time in which all wellbore storage ends and the reservoir sand face is responsible for the entire flow is: ( ) ( ) From theory pure wellbore storage ends when the pressure derivative points on the log-log plot begin to differ from the unit slope. For the case this occurs at , corresponding to a of 1887. This is higher than...
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