S-Field stands out as one of Indonesia's largest mature oil fields, boasting a history dating back to its development in 1952. Over the past four years, an average of 450 rig activities annually have been dedicated to repairing and resizing the 1,000 electric submersible pumps (ESPs) employed for artificial lift operations. These pumps are crucial for achieving optimal flow rate production, with production targets ranging from 100 to 15,000 barrels of fluid per day (BFPD). However, the extensive rig activity presents significant challenges in managing artificial lift performance, inventory, and energy consumption efficiently.

To address these challenges, the introduction of compact wide-range electric submersible pump technology offers a breakthrough solution. This innovative technology enables pumps to operate within an exceptionally wide flow rate range, from 500 to 3,000 BFPD. Achieving this remarkable range is made possible through the utilization of high rotational pump speeds, driven by permanent magnet motors, ensuring energy efficiency throughout operation.

In October 2021, a set of compact wide-range ESP D2000HS pumps were deployed, marking a significant milestone. These pumps seamlessly transitioned from conventional speeds of 3,000 rpm to an impressive 7,000 rpm without encountering any reliability issues. Notably, the ESP demonstrated its capability to produce a flow rate ranging from 600 to 2,400 BFPD through periodic speed adjustments alone, eliminating the need for rig intervention. This saved valuable time, preventing three days of potential production loss, and eliminating rig fuel consumption. Impressively, the ESP exhibited reliable performance for over 700 days before proactive replacement was deemed necessary. Comparatively, the tested ESP surpassed the median ESP run life at Sinam Field by 104 days and outperformed four conventional ESP types. Additionally, it recorded 8.7% reduction in power consumption compared to conventional ESPs with identical flow rates.

The demonstrated technical prowess and reliability of compact wide-range ESPs present a compelling alternative for artificial lift operations. Beyond enhancing operational efficiency and reducing carbon emissions through rig optimization and energy-efficient operations, this ESP's benefits extend to inventory rationalization, particularly in large, mature field operations.