China Oilfield Services Limited (COSL) reported third-quarter revenue of RMB11.53 billion, up 3.6% year-on-year. Over the first nine months of 2025, revenue reached RMB34.85 billion, reflecting a 3.5% increase compared with the same period last year. Net profit attributable to shareholders of the company surged to RMB3.21 billion for January–September 2025, up 31.3% year-on-year, with third-quarter net profit alone seeing a 46.1% increase to RMB1.25 billion.

The drilling services segment benefited from improved equipment utilization, as total operating days for rigs rose to 14,784, up 12.3% compared with the same period of 2024. Marine support services also expanded, with operating days advancing 17.7% to 62,589. Meanwhile, geophysical operations strategically concentrated on high-return business despite a decline in overall 2D and 3D acquisition volumes.

Net cash flows from operating activities for the first three quarters amounted to RMB1.99 billion, down 61.2% from the same period last year, primarily due to variations in payment schedules and settlements. According to the company’s announcement, all financial figures are unaudited and prepared under PRC Accounting Standards for Business Enterprises.