UK-BASED AFREN plc has lifted the resource potential in the Ebok field to 182mn barrels following the success of the Ebok-6 appraisal well off Nigeria.
p>UK-BASED AFREN plc has lifted the resource potential in the Ebok field to 182mn barrels following the success of the Ebok-6 appraisal well off Nigeria.
Ebok-6 encountered 33 m of gross oil pay, comprising 25 m in the D2 and another 8 m in the LD-1A reservoir sands.
The greater than expected hydrocarbon column has led to an upgrade in D2SL volumetrics post Ebok-6 to 135mn bbls STOIIP of which 23mn bbls is estimated as recoverable (versus pre-drill estimates of 33mn bbls STOIIP, 8 mmbbls recoverable). This increases total 2P Ebok recoverable reserve estimates to 116mn bbls.
The well was drilled by the Transocean jack-up rig Adriatic IX to 109 m deep on Ebok D2 Southern Lobe. The rig was released from the well location on 27 November 2009.
Completion of the Ebok-6 appraisal well represents the successful conclusion of the pre-development Ebok appraisal phase (Ebok-4, Ebok-5 and Ebok-6 wells).
Based on a pre-farm-in gross reserve estimate of 25mn bbls, appraisal drilling to date has confirmed an incremental 91mn bbls recoverable through a 100 per cent drilling success rate.
This is a strong endorsement of Afren's regional understanding and interpretation of the subsurface.
Afren has started work on the first phase development of the Ebok field. Five horizontal production wells will be drilled via a wellhead support structure and mobile offshore production unit in the D2 reservoir.
Fabrication of the wellhead structure is complete and is in transit for delivery to the project.
