If purely hydrodynamic in origin, the fluid contact tilt can be extrapolated across the field as a flat plane that intersects the contact elevation in a minimum of three control wells. Regional fluid pressure data can be used to extrapolate the fluid contacts from the contacts measured in one or two wells. Only corrected [[Pressure transient testing#Pressure buildup tests|shut-in pressure]]s unaffected by nearby production should be used for this evaluation. | If purely hydrodynamic in origin, the fluid contact tilt can be extrapolated across the field as a flat plane that intersects the contact elevation in a minimum of three control wells. Regional fluid pressure data can be used to extrapolate the fluid contacts from the contacts measured in one or two wells. Only corrected [[Pressure transient testing#Pressure buildup tests|shut-in pressure]]s unaffected by nearby production should be used for this evaluation. |