Oil and gas Rasau is centred around the Rasau oil field, one of only two onshore oil fields in Brunei. Discovered in 1979, the field played a key role in boosting the country's oil production to 250,000 barrels per day at the time. the Rasau Production Station is located within the area and is connected by pipelines to tank farms in Seria via
Mumong, and to the Seria refinery through Kuala Belait. Additionally, hydrocarbons from Malaysia's Asam Paya field in neighbouring Sarawak are piped into Rasau.
Shipbuilding In May 1982, the Rasau shipyard in Kuala Belait built and launched the first
floating dock constructed in Brunei, which slid quietly down its slipway into the Belait River after 18 months of construction. The dock, launched from the Tanjung Rasau yard about upriver from the town, was a new design by
Vickers in
Sydney and was the largest of its kind in the world. It was capable of handling vessels up to long and weighing . This new dock worked alongside its larger sister dock, which could handle ships up to 1,200 tonnes, both moored in the Belait River. Together, they were able to service any vessels able to cross the shallow bar at the river's mouth. The new 'B' dock was intended primarily for smaller offshore vessels, which made up around 70 per cent of the fleet entering the river, while the larger dock managed bigger ships. Prior to the new dock's arrival, the existing dock had been in continuous use and was unable to accommodate the smaller boats despite available labour. The new dock operated on the submarine principle, submerging by filling large tubular ballast tanks with water to float vessels in, then using compressed air to force the water out and create a dry dock for repairs. The larger dock had been towed to Kuala Belait three years earlier and was the first facility of its kind in Brunei,
Sabah, or
Sarawak. ==Infrastructure==