Case Study 2: Negative Skin in Low-Perm Formations
You have probably come across well test interpretations that show a negative skin of -5 to -3 together with low permeability formation (for example, 4 md). What is the reason for this? – Vertical oil well– Not hydralically fractured well– Carbonate res. I have two interpretations, and I would like you to share yours as […]
Case Study 1: The Effect of Nearby Wells on Well Test Results (A Horizontal Oil Well)
Inter-Well Communication in a Real Field Experience: As shown in the following plot, the bottomhole pressure data from a ~10-day buildup test in one of the horizontal oil wells in the Middle East does not exhibit a normal trend. Further investigations revealed that the pressure behavior was influenced by nearby producing wells. About three hours […]