Motivation
The idea of SGS is to pull a memory gauge down hole below, deep enough to capture a pressure gradient in wellbore fluid column and then use the same gradient to extrapolate the wellbore pressure to formation datum.
Objectives
Assess cross-layer average formation pressure.
Data Acquisition Procedure
- Design survey
- Assess the duration of required shut-in period
- Assess the expected static fluid level based on the minimal expected formation pressure around the well
- Assess additional depth extension in order to capture the pressure gradient in static fluid column
- Assess the duration of required shut-in period
- Shut-down the well for a pre-calculated period of time
- Pull down the memory gauge at pre-calculated depth
- Retrieve the tool at surface and download the data