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Question

Given the well data in Appendix A, and assuming a 40 acre drainage area, calculate:

a. the time required to

reach pseudosteady state.

b. the flow rate for transient flow from time = 0 to time to pseudosteady state at wellbore flowing

pressures ranging from 0 to initial reservoir pressure. Display 5 equal increments for time and

10 for wellbore flowing pressure. Plot the corresponding IPR curves.

c. the flow rate for pseudosteady state, if the flow boundary pressure equals the initial reservoir

pressure and the wellbore flowing pressure is 500 psi.

d. the IPR curve for a reservoir at pseudosteady-state condition with average reservoir pressure

equal to 5000 psi at the time of transition. Repeat for average reservoir pressures of 4500 and

4000 psi.

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