A well is producing from a reservoir formation (average pressure= 2000 psi). Production rate was estimated at 200 STB/day having a bottomhole flowing pressure (pwf) close to 1800 psi. The bubble-point pressure is 2100 psi. Based on these data calculate using the appropriate model:
Qo (max) also known as (AOF) Absolute Open Flow Potential
The producing rate expected when reducing pwf to 1500 psi
The bottomhole pressure needed to obtain an inflow of 400 STB/day
In a table, compare results obtained in problem 1 with those obtained in assignment #1 problem 2. Briefly explain the differences if any.
For the well deliverability test example covered in class (data given below), solve it using a spreadsheet and analyze the effect of reservoir depletion on IPR. Initial average reservoir pressure was given 3600 psia. Compare in an IPR plot these behaviors. Estimate qo(max) for each case.