Valeura Energy has discovered a new oil accumulation at Suraphi near its Manora field in the Gulf of Thailand and has begun planning a potential satellite development on Block G1/48.
The discovery was made through the Manora-9 open-water exploration well and associated sidetracks, approximately 4.5 km northeast of the Manora A platform. Valeura Energy holds a 70% operated working interest in Block G1/48.
Drilling tested several prospects across separate fault blocks. The E prospect encountered multiple oil-bearing sandstone intervals within the 600-series lacustrine sands. The well intersected a 626-ft gross oil column containing 162 ft of net oil pay.
In the adjacent D fault block, drilling found a similar oil-bearing reservoir section. The prospect recorded an 849-ft gross oil column and 172 ft of net oil pay. A separate sidetrack targeting a shallower, higher-risk play did not encounter hydrocarbons.
Valeura Energy said the results from the D and E prospects had reduced the exploration risk associated with the adjacent F fault block, which has been identified on 3D seismic data. According to the company, mapping calibrated with pressure data collected during drilling indicates that the D, E and F fault blocks could be filled to their spill points.
The company said that even a more conservative assessment based on the deepest oil demonstrated by the wells is likely to support consideration of a satellite facility on Block G1/48.
Valeura Energy also believes a Suraphi satellite platform could provide a development option for the Malida field, located approximately 3.5 km east of Suraphi. The company is considering connecting the proposed facility to the existing Manora wellhead and processing platform.
Development planning for Suraphi is now under way. Valeura Energy will also consider appraisal options for Malida and reassess nearby exploration prospects for possible inclusion in future drilling campaigns.
Separately, Valeura Energy has completed four wellbores as part of a development and appraisal drilling programme at its wholly owned Jasmine field on Block B5/27. Two were drilled from the Jasmine-C platform and two from Jasmine-D.
The campaign comprised two horizontal development wells and two deviated wells with both development and appraisal objectives. The latter wells also appraised several new zones, which Valeura Energy will evaluate as potential candidates for future development.
Jasmine oil production averaged approximately 7,570 bbls/d before royalties during the seven days before the new wells were brought online. During the seven days after all four wells came onstream, production averaged approximately 8,250 bbls/d before royalties.
Following completion of the campaign, Valeura Energy plans to demobilise the Borr Mist drilling rig and release it from contract.
Drilling in the Gulf of Thailand is scheduled to resume in early November 2026 using the Shelf Drilling Enterprise. The rig is expected to start at the Nong Yao field on Block G11/48, where Valeura Energy holds a 90% operated working interest, before moving to development drilling at the Wassana field on Block G10/48, in which the company has a 100% interest.
