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.
Facilities engineers oversee the design and construction of various production and utility systems in a given facility, ranging from offshore platforms to onshore plants. They assist with designing the layout and systems including everything from power sources, climate control, water and lighting to more specialized systems such as those processing chemicals or environmental controls. Many facilities engineers are also involved with the ongoing operations of this equipment, suggesting maintenance schedules and consulting on future renovations and construction.