Drilling refers to the installation of the well bore including casing strings, cement and surface well control equipment. Well completion is the process of making a well ready for production (or injection) after drilling operations.

At the initial exploration stages, drilling fluid is required to add pressure, support the weight of the drill and reduce friction.

If a well is commissioned, completion fluid is then required for cleansing, enabling the fitting of screen liner, reducing the risk of seepage, maximizing flow and generally readying the well for production.

MikaZone™ Hydroxyethyl Cellulose(HEC) High viscosity is mainly used as a thickening agent in completion fluids to obtain good fluidity and stability for the slurries, and low viscosity MikaZone™ Hydroxyethyl Cellulose HEC can work as a fluid-loss additive to prevent too much water in operating fluid from penetrating into the borehole wall, which can improve its stability.