Thailand has been an oil and gas producer for many decades, with falling reserves amid rising domestic petroleum consumption. Proven oil reserves in Thailand is estimated at around 453 million barrels, while proven natural gas reserves stood at about 10.1 Tcf. PTT Exploration and Production (PTTEP), the upstream subsidiary of state-owned PTT Public Company Limited (PTT), is the dominant player in the Thai petroleum industry. Chevron, Total, Mitsui and BG Group are some of the bigger foreign companies with a presence in Thailand's petroleum sector.
Projects have numerous activities that need to be planned and scheduled properly so that they may be completed on time. Planning identifies what activities are required whilst scheduling determines the sequence of these activities. Planners and Schedulers manage work priorities, schedules, work orders and plan revisions once there are design changes, unavailability of materials or services and other project disruptions. They typically use project controls and project management software to manage these functions.