Petroleum covering upstream and downstream support services. The upstream support services covers the whole exploration process (seismic and drilling) as well as other technical, environmental compliances and legal support related to the licensing and production infrastructure development process. The downstream support services range from petroleum trading, logistics, compliance support services, construction, production, closure, decommissioning and aftercare support services associated with all form of downstream petroleum infrastructures such as pipeline, refineries, strategic storage facilities, depot and service stations.