The company will use Key Gibraltar jack-up rig to drill and complete additional development wells, to produce around 10,000 barrels of oil per day (bopd) by the end of the year.
KrisEnergy exploration and production director Chris Gibson-Robinson said: "Wassana is KrisEnergy’s first operated oil project and the start of production marks a major milestone in the company’s evolution.
"This field is the first of a series of KrisEnergy-operated developments we are working on in Thailand, Cambodia and Indonesia."
The company plans to drill 14 producer wells and one water disposal well, as part of the field development program.
The Wassana infrastructure will include Ingenium mobile offshore production unit (MOPU) and the Rubicon Vantage floating storage offloading vessel, the company said.
KrisEnergy operates the G10/48 concession with 89% interest while Palang Sophon Offshore owns the remaining.
Located in water depths of up to 60m, the license covers three discoveries, including Niramai, Mayura, Rayrai.
