#TITLE_ALTERNATIVE#

• Main Author: PRAMANA (NIM : 12214014), HARRIS
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27745
• Institution: Institut Teknologi Bandung

Marginal reservoir is nowadays perceived as an alternative solution for additional production increase, hence, further development to produce this zone shall undergoes thorough analysis. A viable method for cheaper and more efficient development is the application of cement packer completion. This study will analyze the effect of cement packer completion to the overall production and economics as compared to the conventional workover method by means of pulling out previous tubing. <br /> <br /> <br /> Application of cement packer completion can bring a bit of a challenge, especially considering the target zone is an offshore field. Therefore, similar to the other condition to conduct general cement packer completion, several requirements for safety concern must be fulfilled, such as a good cement-casing and cement-tubing bond, as well as the absence of future planning to sidetrack and workover the well in the future. In order to compare both <br /> <br /> <br /> conventional and cement packer method, a comprehensive analysis will be done to compare both the resulting operating condition of the well until the economic analysis of both method. <br /> <br /> <br /> The following study used Well-X in ONWJ field which plans to target marginal reservoir. Due to the absence of required well test data, the well production data is used instead to accommodate for the well inflow performance equation. To enhance the production due to the currently slight reservoir pressure, a gas lift system is installed to maintain the pressure as long as possible. From the analysis, it is obtained that implementation of cement packer completion cause a relatively modest skin factor of around 3, confirmed by the calculated skin factor from correlation and reverse problem method from production data regression. By further analysis, implementation of cement packer method contributes to a lower production rate and slightly higher economical value. However, the contrary can also be happened to another different case, and analysis from reservoir and well performance data must be conducted to confirm the technical and economic feasibility of the method. <br /> <br /> <br /> The novelty of this paper involves the analytical comparative study for cement packer feasibility as compared to the conventional tubing pull-out method. For future implementation, most well cases considering lower completion cost can utilize this method for better economic feasibility.