There has been relatively little hydrocarbon exploration in Laos. In June 2007, Salamander signed the Savannakhet PSC, which represented the first interest in oil and gas in the country since 1998.
Oil shows were first reported in Laos in 1935 in the Savannakhet area. Two exploration permits were awarded in 1959 to a French company, but activity was very limited and the company pulled out in 1960. In 1974, exploration activity restarted, but was curtailed during a period of political change as the communists took over.
More recently, Enterprise Oil signed up the Savannakhet PSC in 1989. In 1990, Hunt Oil Company signed the Pakse PSC and in 1991, Monument Oil & Gas signed the Vientiane PSC. Drilling got underway in 1996 when Hunt spudded the Pakse-1 well which turned out to be a dry hole and the PSC was relinquished in 1997. Enterprise withdrew in 1998 and was followed by Monument in the same year after it had drilled the Naxay-1 well.