Valeura Energy has completed an eight-well drilling programmme at the Nong Yao field in the offshore Gulf of Thailand.
The Canada-listed company, which holds a 90% operated working interest in block G11/48, announced that the campaign included its first attempt at a multilateral well in Thailand.
The latest drilling campaign comprised one appraisal well and seven horizontal development wells, drilled from both the Nong Yao A and B platforms.
The appraisal well struck its target as planned and will enable future development drilling on the Nong Yao A platform. Each of the seven development wells reached their intended targets and have now been brought into production.
Among these, the NYA-42ST1H well achieved a record for the longest horizontal lateral drilled in the Gulf of Thailand, with a measured length of 4,960ft.
Valeura also reported increased oil production at the Nong Yao field following the drilling and a concurrent well workover campaign conducted on the Nong Yao B and C platforms to enhance well output.
Oil production prior to these operations averaged 8,870 barrels per day (bpd) over the seven-day period.
Since the campaign, rates have increased to approximately 10,500bpd, based on Valeura’s working interest share before royalties, for the seven-day period.
The company’s first multilateral well, NYB-02ST1, was drilled during this campaign. Within a single wellbore, Valeura created a complex junction, enabling two separate horizontal production legs to access two different reservoir intervals.
Valeura Energy president and CEO Sean Guest said: “We continue to access new oil reservoirs with ongoing drilling, and have again increased production from the Nong Yao field, our largest producing asset.
“Moreover, in this campaign, our team has demonstrated the potential for multilateral drilling in the Gulf of Thailand as a way to enhance the efficiency of what is already a world-class drilling and completions organisation.
“This continues our long tradition of embracing new technology and sets the stage to deploy this approach broadly across our portfolio.”
Valeura stated that it is assessing further opportunities for multilateral drilling across its Gulf of Thailand assets.
The current drilling rig is being relocated to Block B5/27 in the Jasmine field, where Valeura plans a five-well programme that includes both single-bore and multilateral wells.
In October 2025, Valeura Energy and its partner Pinnacle Turkey formed a joint venture with a subsidiary of Transatlantic Petroleum to explore and develop hydrocarbon resources in the Thrace basin in north-west Türkiye.
