Heidelberg is based on a tension leg platform with a floating hull tethered to the seabed by vertical tendons, supporting dry-tree wells and subsea tie-backs. Production wells are drilled from the platform and supplemented by subsea wells tied in via flowlines and manifolds. Fluids are transported through risers to topside facilities where multi-stage separation splits oil, gas, and water. Oil is stabilised and exported via the Poseidon Oil Pipeline system, while gas is compressed and exported through offshore gas pipelines. Produced water is treated prior to discharge or reinjection. Subsea infrastructure includes electro-hydraulic umbilicals for control and chemical injection. Power is generated onboard using gas turbines. The TLP configuration enables direct well intervention and efficient management of high-pressure reservoirs.