Drilling is underway at the Sasanof-1 exploration well on the Barrow Delta within the Exmouth Plateau.
Operator Western Gas said that the well was spudded with the jetting of the 36” conductor at a water depth 1068.3m below mean sea level (BMSL). Drilling was underway on the 17-1/2” intermediate hole section to a depth of 2030m BMSL, whereafter 13-3/8” casing will be run and cemented.
This will be followed by drilling the 12-1/4” hole section through the target reservoirs to a total depth of 2500m (BMSL).
Western Gas said it anticipated that drilling through the target reservoir section would occur between June 2-5. Western Gas has a 52.5% stake in Sasanof with JV partners comprising; Global Oil and Gas (25%), Prominence Energy (12.5%) and Clontarf Energy (10%).
Sasanof-1 is Western Gas’ first well drilled from its extensive exploration portfolio surrounding the existing Equus Gas Project, which contains a discovered resource of 2Tcf and 42MMbbl (2C Gaffney Cline). The Equus Gas Project has a historic exploration drilling success rate of 88%, with 15 discoveries from 17 wells.
The Sasanof Prospect covers an area of up to 400km² and is on trend and updip of Western Gas’ liquids rich, low CO₂ Mentorc Field.
Sasanof is a large, seismic amplitude supported, structural-stratigraphic trap in the high-quality reservoir sands at the top of the Cretaceous top Lower Barrow Group formation on the Barrow Delta within the Exmouth Plateau.
ERCE estimates the Sasanof Prospect to contain a 2U Prospective Resource of 7.2 Tcf gas and 176 MMbbls condensate (P501) with a high case 3U Prospective Resource estimate of 17.8 Tcf gas and 449 MMbbls condensate (P10).
Further updates will be provided upon the completion of campaign milestones.