Syahnaz, Tesar Dwi Chandra (2025) Evaluasi Laju Alir Produksi dengan Parameter Tekanan Statik (PS) dan Tekanan Alir Dasar Sumur (PWF) Menggunakan Data Uji Sonolog di PT. Pertamina EP Asset 1 Lirik Field. Other thesis, Universitas Islam Riau.

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Abstract

PT Pertamina EP Asset 1 Lirik Field has experienced declining oil production over time due to decreasing reservoir pressure. This study aims to evaluate the production flow rate using static pressure (Ps) and bottom hole flowing pressure (Pwf) parameters based on sonolog test data. Measurements of static fluid level (SFL) and dynamic fluid level (DFL) were obtained from five wells (LR-144, LR- 145, LR-148, LR-156, and LR-157). Based on Ps and Pwf calculations, nodal analysis was conducted to determine the Productivity Index (PI) and the Inflow Performance Relationship (IPR) using Vogel and Gilbert methods. The results showed that well LR-144 had a PI of 2.07 bbl/d/psi, LR-145 was 4.24 bbl/d/psi, LR- 148 was 1.33 bbl/d/psi, LR-156 reached 24.44 bbl/d/psi, and LR-157 achieved 14.49 bbl/d/psi. The maximum production flow rates (Qmax) varied according to each well’s fluid properties and reservoir pressure. Among them, LR-156 showed the highest productivity, indicating strong production potential. This study concludes that sonolog-based evaluation methods are effective tools for optimizing well production performance.

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