Scale deposition in the near wellbore region is an extensive problem in hydrocarbon production. When sea water breakthrough occurs, scale formed by mixing of sea water with formation water flows into the wellbore to the surface. It deposited through out its path and reduces the path for hydrocarbon flow. Sever deposition of scale inside the tube or near wellbore region, highly diminishes the productivity of the well. Scale inhibitor squeeze treatment is one of the remediation processes to avoid scale deposition in the near wellbore region. High water producing zones brings more scale into the tube and therefore these zones are targeted to treat primarily. In heterogeneous reservoirs, squeezed chemicals placed into the fluid flow favourable zones rather than zones targeted to treat. To maximise the affectivity of the treatment, optimisation of the treatment is necessary. To aid in the process of optimisation of squeeze treatment, near wellbore simulation approach is applied. Using near wellbore simulation approach, sensitivity of the different parameters involved in squeeze design (e.g., main slug volume, main slug concentration, overflush volume etc) is determined to find an optimum concentration and optimum slug volume which can enhance the placement of scale inhibitor in unfavourable zones. It is found that the main slug concentration and overflush volume are significant factor which affect the chemical placement. This presentation describes the severity of scale problem and following up the process of optimisation of squeeze treatment using near wellbore simulation.


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