Study of the behavior of a commercial scale inhibitor on silica sand

Squeeze treatments are expensive [1]; in addition to the cost of the chemicals and injection, the well is usually shut-in for several days causing considerable economic loss [18]. Therefore, the ultimate concern of the operator is to have long squeeze lifetimes in order to minimize the number of treatments, thus reducing the cost. The objective of this thesis is to study the adsorption of the commercial scale inhibitor SI onto silica sand. By investigating this intrinsic phenomenon, an optimized squeeze treatment can be designed in the future, thus saving money to the operator. This objective will be achieved by the investigation of the behavior and interaction of the scale inhibitor SI, field brine and synthetic seawater (SW) under reservoir conditions via porous media displacement experiments. The scale inhibitor adsorption tests takes place at 70 °C.