Valeura Energy completes eight-well drilling campaign offshore Gulf of Thailand

• Valeura Energy completed an eight-well drilling campaign at License B5/27 offshore Gulf of Thailand.
• The drilling rig is being mobilized to Nong Yao field where Valeura plans will drill about 10 development wells.

Valeura Energy Inc. completed an eight-well drilling campaign at License B5/27 offshore Gulf of Thailand.

Through the drilling campaign, Valeura has maintained oil production consistent with its first quarter performance, offsetting natural declines, it said in a release May 27.

The company drilled two development wells from the Jasmine C platform. Both wells are currently online as producers. Well C-30ST1H was drilled as a horizontal lateral within the 400 sand reservoir and was completed as an oil producer. The well’s completion design includes an autonomous inflow control device, which has made it possible to complete the well as an oil producer despite being drilled into a mixed gas/oil transition zone.

Well C-39 was directionally drilled to develop three separate reservoir intervals (330, 160, and 50 sands), and was successful with all targets. It was completed as a multi-zone producer, with the 330 interval now online.

The company drilled three wells from the Ban Yen A platform. Two were primarily development wells with additional appraisal targets, and one was a dedicated appraisal well. The two development wells are online and exceeded expectations for total pay.

Well BYA-35ST1 was drilled as a deviated multi-objective well. The well successfully developed remaining oil volumes from multiple already-producing reservoirs and was completed across six sand reservoirs which will be produced sequentially. The well appraised several targets which will now be matured for inclusion in a future development drilling program, the company said. 

Well BYA-42 was drilled as a deviated well targeting remaining oil in a single reservoir interval (50 sands) and was completed as a producer. The well also appraised two shallower reservoir targets in 480 and 260 sands which are being evaluated as potential future infill drilling locations.

Well BYA-41 was an appraisal well drilled to evaluate the potential of 50-series reservoir sands. The well encountered oil and identified a deeper oil-water contact than predicted, but the reservoir target was found to be poorly developed, resulting in small volumes. As a result, Valeura chose not to complete the well as a producer but will integrate the data gathered into its models with the objective of identifying alternative locations in the vicinity to develop the reservoir.

Valeura drilled two deviated development wells from the Jasmine D platform. Both were successful and are now contributing to production. Well D-44 was drilled as a deviated development well with multiple targets. The well encountered its primary targets (500 and 600 series sands) as intended, successfully accessing remaining oil at the structure’s crest. The well verified upside in all secondary targets, covering five additional reservoir sands, the company said. 

Well D-45 was also drilled as a deviated development well into the block’s main fault block.  The well encountered oil in all three of its primary targets (250, 245, and 160 sands) and was completed as a multi-zone producer. The well encountered oil in its secondary 680 sand target, which will be developed by an additional well as part of a future development campaign.

The Ratree exploration well intersected its target sand reservoirs as prognosed but encountered only trace amounts of hydrocarbons. Results suggest that oil did not migrate to this reservoir trend, resulting in insufficient hydrocarbon charge. Further prospective trends within the B5/27 block are being evaluated for future exploration potential.

The Valeura’s contracted drilling rig is now being mobilized to Nong Yao field where it plans to drill a program of about 10 development wells.

Valeura Energy is operator at License B5/27 (100%).