Changes

|-

|-

| 4

| 4

| Check to see if anomalous pressures make geological sense. <break> </break> ''' Example: ''' Measured fluid pressure is 250 psi over the static water pressure. The formation is believed to contain 30°API gravity oil, and the total vertical trap closure is [[length::500 ft]]. <break> </break> ''' Solution: ''' If the 250-psi pressure is due to the presence of a hydrocarbon column, then a column of [[depth::2500 ft]] of 30°API gravity oil would have to be present in the trap (assuming a freshwater gradient). Vertical trap closure is only [[length::500 ft]]; therefore, the measured formation pressure does not match the geology and is probably wrong.

| Check to see if anomalous pressures make geological sense.  

* ''' Example: ''' Measured fluid pressure is [[pressure::250 psi]] over the static water pressure. The formation is believed to contain 30°API [[oil gravity|gravity]] oil, and the total vertical trap closure is [[length::500 ft]].

* ''' Solution: ''' If the 250-psi pressure is due to the presence of a hydrocarbon column, then a column of [[depth::2500 ft]] of 30°API gravity oil would have to be present in the trap (assuming a freshwater gradient). Vertical trap closure is only [[length::500 ft]]; therefore, the measured formation pressure does not match the geology and is probably wrong.

|}

|}