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 formation pressure in perforated formation units. 

Data Acquisition Procedure

1. Design survey
   
   
   1. Assess the duration of required shut-in period
      
      
   2. Assess the expected static fluid level based on the minimal expected formation pressure around the well
      
      
   3. Assess additional depth extension in order to capture the pressure gradient  in static fluid column
      
      
2. Shut-down the well for a pre-calculated period of time
   
   
3. Pull down the memory gauge at pre-calculated depth 
   
   
4. Retrieve the tool at surface and download the data

Data Interpretation