Productivity Index (KS)
Objectives
The objective of the user task is to calculate Phase Productivity Index (PI) values at shut-in start times.
Input
Offset – time from the start of shut-in at which shut-in pressure is taken to calculate pressure drop.
Input gauge – pressure gauge.
Rate gauge – phase rate gauge.
SIID gauge – shut-in gauge.
Output
PI Results – Phase Productivity Index at shut-in start time; if offset value is larger than a shut-in duration the Productivity index is not calculated.
Auxiliary channels:
ResPressure Results – shut-in pressure at the offset time; if offset value is larger than a shut-in duration the value is absent.
RateCumesAtOffset – phase cumulative; values are recorded at shut-in start times.
LastFlowingPressure– last flowing pressure (pressure at the shut-in start time); values are recorded at shut-in start times.
LastRate – phase rate before shut-in; values are recorded at shut-in start times.
User task dialog
Input and output channels