During the 2025 planned maintenance period, Roc Oil Malaysia demonstrated outstanding innovation and lean management capabilities, successfully overcoming production challenges. Despite a two-week shutdown of the MLNG gas facility, the team creatively maintained continuous crude oil production, generating an additional RMB 9 million in value. This achievement highlights Roc’s strong execution under the FES system and its culture of innovation and operational excellence.
According to the 2025 production plan, crude export from the D35, D21, and J4 fields was originally scheduled to be suspended during the MLNG shutdown, as there was no gas export route available. Refusing to accept the downtime, the Malaysia team proactively launched several studies and well tests in the first half of 2025 to assess the maximum gas reinjection capacity of the D35 field. Based on the findings, the team proposed an innovative solution: maximize gas reinjection during the MLNG shutdown period which allowed oil production to continue without any gas export.
The proposal received strong endorsement from the Operator’s team. The Roc team completed gas reinjection testing ahead of schedule and strategically identified low gas-oil ratio wells that would not be affected by excess reinjection. By operating with only one compressor, the team successfully maintained stable crude export during the two-week MLNG shutdown — under zero gas export conditions. This approach sustained 8,000–9,000 barrels of oil per day, representing a 4% annual production increase (approx. +350 bopd) and over RMB 9 million in additional revenue.
Beyond achieving “no shutdown during maintenance,” the project also provided valuable experience for the later planned overhaul in D35 oil field. The optimized gas management strategy was further applied, when D35 operated with only one compressor, leading to continued production performance above plan.
The entire optimization was completed using existing equipment and inventory, with no additional procurement costs, fully realizing the goals of cost reduction and efficiency improvement. The successful implementation offers a replicable model for handling future planned or unplanned shutdowns, setting another benchmark for lean operations in the region.
This success embodies the Roc Malaysia team’s courage to innovate and commitment to excellence, once again proving the effectiveness of the FES system at the frontline. Roc Oil will continue to drive innovation and lean improvement across all business units, advancing steadily toward its goal of safe, efficient, and sustainable operations.