Page 136 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2
P. 136
110 Reservoir Engineering
NO PERMEABILITY VERY LOW PERMEABILITY SAND FACE POSSIBLY PLUGGED
HIGH PERMEABILITY ON HIGH PERMEABIW ON HIGH PERMEABlUTYWlTH
3/16 BOllOM CHOKE 1/4" BOTKIM CHOKE NO BOTTOM CHOKE
(CRITICAL FLOW) (CRKICAL FLOW) WON-CRITICAL FLOW)
n C D E
GAS TEST-UNLOADED WATER CUSHION EXCESSIVE FLUID HEAD INSIDE PIPE
a - WATER WSHlON RISING TO SURFACE FLOWlNG PRESSURE UPSTWM OF CHOKE
b -WATER CUSHION BEING PRODUCED MINED CONSTANT UNllL THE BACK
c - FLOWING DRY GAS PRESSURE DUE TO LIQUID ACCUMULATION
d -TOOL SHUT IN INSIDE PIPE BECAME EXCESSIVE, RESULTING
IN A DIMINISHING FLOW RATE.
