Bulk Scale Analysis used to extend squeeze lifetime
Instead of relying on uncertain laboratory criteria and modelling for when a well need to be re-squeezed, BSA has proved effective.
This example shows how BSA is used to optimize the timing to re-squeeze wells. Usually, re-squeeze is done when the back-produced inhibitor concentration (RSI) decline towards the Minimum Inhibitor Concentration (MIC). However, this strategy will always be uncertain because MIC is measured at lab conditions and since the scale inhibitor can be unevenly distributed along the wellbore. Many oil companies now use BSA to secure a better decision basis for the timing of re-squeeze. This secure that the re-squeezing not is too late and not unnecessarily early.
The graph below illustrates how squeeze lifetime can be extended by use of BSA, instead of re-squeezing when the Inhibitor concentration is in the range of MIC, the timing relyes in BSA result.