Scale causes decline of production in most oil fields world wide. Use of sea water injection cause sulphate scale deposition which is difficult to dissolve and remove. At subsea fields where well interventions are more costly,  controlling and preventing scale is vital.

The scale management strategy is of vital importance to operate with minimum scale prevention and removal costs, and at the same time avoid production loss.  The management will consist of several interacting elements.

Scale growth in perforations, casing /screen and tubing will reduce a well’s productivity. However, sometimes scale is deposited in the reservoir with no harm, and for other fields the scale tends to be in the well.