Dulang D is the western satellite drilling platform and is normally unmanned. Its platform wells were the deepest and had the highest step-out ratios then drilled by the field developer offshore Peninsular Malaysia. Published completion records describe inclinations reaching about 83 degrees, with several perforated intervals close to the oil–water contact. These conditions required specialised drilling and completion methods, including tubing-conveyed perforating and gravel-pack work in highly deviated wells. The wells terminate at surface trees connected to wellhead flowlines and production gathering equipment. Documented controls include wellhead-control equipment, individual well-control modules and a simultaneous-production-and-drilling panel, providing local well control while drilling and production activities coexist. Dulang D sends unprocessed oil, associated gas and produced water through the permanent subsea pipeline network to Dulang B. It has no crude-stabilisation plant, bulk storage or tanker-loading facility; separation, treatment and export occur at the central platform and FSO. A documented 6-inch gas-lift pipeline runs approximately 7 kilometres from Dulang B to D, supplying artificial-lift gas to the platform wells. Public project records also identify a water-injection guard filter at Dulang D, connecting the installation to the field waterflood and injection architecture. Local facilities therefore focus on well access, multiphase gathering, gas-lift and injection distribution and well controls. Dulang D’s output remains untreated until it reaches Dulang B. Stabilised crude is then transferred by submarine pipeline to the field FSO for storage and offloading to export tankers.