Valeura Energy has completed an eight-well drilling campaign at its Nong Yao field in the Gulf of Thailand, including its first multilateral development well, the company said in a statement on Friday.
The program at the offshore field, where Valeura holds a 90% operated interest, comprised one appraisal well and seven horizontal development wells drilled from the Nong Yao A and B platforms. All development wells successfully encountered their targets and have been brought online.
The appraisal well confirmed a planned reservoir target and is expected to support future development drilling at the Nong Yao A platform.
Among the new wells, NYA-42ST1H established a Gulf of Thailand record for the longest horizontal lateral drilled, measuring 4,960 feet.
Production at Nong Yao has increased following the drilling campaign and a concurrent well workover program on the Nong Yao B and C platforms.
Average output rose to about 10,500 barrels per day for the seven days ended June 16, from 8,870 barrels per day before the work program in early April, based on Valeura's working-interest share before royalties.
Valeura also completed its first multi-lateral well, NYB-02ST1, which features two horizontal production legs drilled from a single junction point to access separate reservoir intervals.
The company said the well represents the most complex multi-lateral drilling project undertaken in Thailand to date.
The design enables production from two development targets while using only one well slot, supporting Valeura's strategy to maximize facility capacity and reservoir access.
The drilling rig has now been mobilized to the Jasmine field, where Valeura holds a 100% interest. The company plans a five-well program consisting of three single-bore development wells and one multi-lateral development well with two wellbores.