Seria Oil Field | Belait

Introduction
The Seria Oil Field, located in the Belait District of Brunei, holds a pivotal place in the nation’s modern history. Discovered in 1929, it is Brunei’s first and most significant commercial oil field, marking the beginning of the country’s transformation from a largely agrarian society to a wealthy, oil-dependent nation. The field lies near the town of Seria and stretches along the coastline toward the South China Sea. Its discovery fundamentally shaped Brunei’s economy, infrastructure, and urban development.

Geology and Oil Production
The field sits atop a complex system of sedimentary rock layers, primarily Miocene sandstone reservoirs, where oil accumulated over millions of years. Early exploration revealed heavy crude oil reserves, and production techniques have evolved from basic drilling to advanced offshore extraction. At its peak, Seria produced hundreds of thousands of barrels per day, fueling both local development and export revenues. Modern operations continue under Brunei Shell Petroleum (BSP), the joint venture between the Brunei government and Royal Dutch Shell.

Industrial and Visitor Aspects
While the oil field itself is an industrial zone with restricted access, the town of Seria nearby provides insights into the oil industry. Visitors can see the original wellheads, pumping stations, and industrial facilities. The Seria Oil and Gas Discovery Centre offers an interactive experience, explaining oil extraction, refining, and the technological evolution of the industry. Exhibits feature life-sized drilling rigs, educational displays on petroleum chemistry, and historical photographs of early oil workers.

Cultural and Economic Impact
The Seria Oil Field transformed the surrounding region. Roads, housing, schools, and hospitals developed to accommodate the influx of workers. Local employment opportunities expanded beyond traditional agriculture, and Seria became a hub for both domestic and expatriate professionals. The field’s revenue underpins much of Brunei’s national wealth, funding public services and infrastructure projects.

Surrounding Attractions
Visitors to Seria often combine the industrial experience with natural and cultural sites. Nearby attractions include the Lumut Beach, the peaceful Belait River, and small local markets offering traditional Bruneian cuisine. The juxtaposition of oil rigs against tropical greenery provides a striking visual reminder of the country’s dual identity as a natural paradise and an oil-rich state.

Closing Observation
The Seria Oil Field remains an enduring symbol of Brunei’s transformation and resilience. Even as new energy technologies emerge, the field continues to play a central role in the nation’s economy, while educational and visitor facilities provide a rare glimpse into one of Southeast Asia’s historic oil hubs.