Performance Evaluation and Comparative Analysis of Advanced Gas Separator with Three Downhole Gas Separator Systems in Sucker Rod Pumps: A Case Study in Carbonate Reservoirs, Oman

Abstract The primary objective of this SPE paper is to conduct comprehensive analysis on four distinct downhole gas separation systems in sucker rod pumps in high GOR light oil wells in carbonate reservoirs in the northern region of Oman. Gas interference is considered one of the main challenges in rod pump operation causing lost in production and equipment reliability. The paper aims to present the results of these trials and perform a detailed analysis of the performance exhibited by each gas separation system. By evaluating their effectiveness and efficiency, this study intends to provide valuable insights into gas separation techniques in similar reservoir conditions. Also to identify the optimum operating conditions for each systems. The ultimate goal is to contribute to the advancement of knowledge in this field and facilitate informed decision-making for gas separation operations. In the trials conducted, four different gas separator systems were tested separately in sucker rod completions. These systems are the conventional gas separator, collar size gas separator, tandem gas separator, and advanced gas separator. The performance of each system was evaluated based on various factors, with a focus on gross production improvement and pump parameters such as pump fillage, dynacard, and other relevant parameters. The trials were conducted under similar well conditions and completion configurations. Based on the results of the trials, it was observed that the conventional gas separator and tandem gas separator exhibited similar performance under the tested conditions. On the other hand, the collar size gas and advanced gas separator demonstrated the best performance, exhibiting increased oil production, improved pump fillage, and enhanced equipment quality. Oil production increased by more than 20% in some cases. The study concluded with a thorough comparison of the four systems, providing a comprehensive analysis. The unique concept behind these trials is to showcase the performance of the different gas separation systems. Additionally, the study aims to identify the optimal well conditions for each system.