Energean Oil & Gas PLC, London, started production at a stabilized, restricted rate of 1,000 b/d of oil from an extended-reach well development well in Epsilon field in the Aegean Sea offshore Greece.
The EA-H3 well, drilled to 5,679 m TMD in about 30 m of water by the Energean Force tender rig, penetrated 689 m of Miocene Epsilon sandstone.
Energean said it drilled the well to accelerate initial Epsilon production as part of full-field development.
The field is 4 km northwest of Prinos oil field (OGJ Online, Feb. 12, 2018).
To develop Epsilon, Energean plans to drill as many as nine wells and install a wellhead jacket platform designated Lamda 3.5 km northwest of existing Prinos platforms. Three subsea pipelines will connect the platforms.
The Lamda platform will normally be unstaffed.
Energean drilled the first vertical well of the Epsilon Lamda platform development last December. The well, EL-1, penetrated a gross section of 98 m in the previously discovered Epsilon A reservoir with 40-45 m of net pay—both thicker than in past wells.
The EL-1 also discovered the Deeper Epsilon reservoir, about 82 m thick with 30-35 m of gross pay.
A third zone showed hydrocarbon potential across 140 m drilled.
Energean is drilling the EL-2 and EL-3 wells while the Lamda platform is under construction in Romania.
The field was discovered in 2000 with the E-1 well, which tested sour 36° gravity crude oil from a Miocene Prinos Group reservoir at a depth of 2,800 m TVD subsea.
A 500-m southeastern sidetrack confirmed the reservoir presence and tested oil.
Energean in 2010 completed an extended-reach multilateral well, EA-H1, which produced more than 300,000 bbl of oil over 12 months.
