Estimation of formation water compositions

Benefits

  • Allows you to use applications requiring formation water composition data that you might not otherwise have used.
  • Reduces uncertainties in the application results.

Background

Sometimes, individual formation water analyses are of such poor quality, that they are of no practical use.  Under these circumstances we can use a variety of methods to estimate representative formation water compositions for the reservoir.  These include:

  • Use of compositional correlations or analyses from carefully selected analogue formation waters.  We maintain an extensive database of formation water analyses from around the world.
  • Use of geochemical and reactive transport modelling to correct for processes affecting the compositions of the formation water.

We also identify any remaining uncertainties in these estimated compositions.  This information is important to ensure that the uncertainties in formation water compositions and their associated applications are accounted for when decisions and plans are made on the basis of them.

Example use of correlated analogue data to estimate formation water concentrations
Example use of correlated analogue data to estimate formation water concentrations