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.
Secretarial and Administrative roles provide various levels of support to people or groups within an organization. The roles can vary from supporting whole offices (Office Manager) to assisting an Executive (Executive Secretary). The tasks involved vary from role to role, but can include scheduling, purchasing, co-ordination, and clerical tasks.