**Discoveries in the North Sea: Deltic Energy’s Gas Find at the Selene Prospect**
In a significant development for the North Sea’s oil and gas industry, Deltic Energy has announced tentative signs of gas at its Selene exploration well in the UK Southern North Sea. The Shell-operated 48/8b-3Z well has reached a total depth of 3,540 meters, revealing a 160-meter thick section of Leman Sandstone that contains gas deposits.
The Selene well, which was drilled to a total vertical depth of approximately 3,540 meters subsurface, encountered gas through elevated mud gas readings. These readings confirmed the presence of gas not only within the reservoir interval but also extending into the underlying Carboniferous basement. This discovery was further solidified by wireline logging and fluid sampling, which indicated a live gas column above a gas-water contact at about 3,370 meters, situated in the middle of the B-Sand, a critical producing interval within the Leman Sandstone section.
The exploration efforts have provided essential data that will support future field development decisions. The maximum gas column height estimated for the Selene prospect is around 100 meters, indicating a substantial reserve of high-quality dry gas. Initial indications suggest that the gas quality aligns with production patterns from adjacent fields, with no sign of hydrogen sulfide (H2S) detected.
Deltic Energy’s estimates indicate that the Selene prospect contains gross P50 estimated ultimate recoverable (EUR) resources of 131 billion cubic feet, with a P90-P10 range of 95 to 176 billion cubic feet. These preliminary estimates highlight the commercial potential of the discovery.
Post-well structural maps indicate that the base of the B-Sand and most of the underlying C-Sand are likely in the water leg across the southeastern part of the structure. This deeper structural crest and shallower gas-water contact have resulted in reduced gas column heights across the area, with deeper gas readings now interpreted as residual rather than live gas.
Following the demobilization of the drilling rig expected towards the end of next week, there will be a comprehensive analysis of wireline data, core samples, fluid samples, and pressure testing data to refine the geological model, volumetric estimates, and proposed development plans. This detailed analysis will be crucial in moving the Selene discovery towards commercial development.
Deltic Energy believes that the project is well-positioned