Afren updates Ebok-5 appraisal well, development off Nigeria

Afren has announced the following updates to Ebok-5 appraisal well and Phase 1a of the field development plan for the Ebok project offshore Nigeria:

Offshore staff

LONDON-- Afren has announced the following updates to Ebok-5 appraisal well and Phase 1a of the field development plan for the Ebok project offshore Nigeria:

Ebok-5, currently being drilled by the jackup Transocean Adriatic IX has encountered a total gross oil column of 266 ft (81 m) in the D1 and LD-1E reservoir sands ranging in measured depth from 2,341 ft to 3,090 ft (714 m to 942 m). Analysis of an extensive logging and sampling program on the D1 and LD1E is ongoing.

Afren’s pre-drill volumetric estimates for the Ebok West Fault block were 92 MMbbl STOIIP with 2P recoverable volumes of 25 MMbbl. The Ebok-5 well results to date confirm these estimates, and importantly further validates Afren’s amplitude based model of the Ebok field. The well results provide an important additional calibration point for the amplitude model, and will assist in further appraisal and de-risking of the remaining upside potential, Afren says.

The Ebok-5 appraisal well is currently drilling below 3,350 ft (1,021 m) and will continue to test deeper objectives in the D2 and Qua Iboe sands.

The results to date increase the total Ebok project to 78 MMbbl 2P recoverable reserves, with upside resources potential of 74 MMbbl.

The Phase 1a development plan comprises five horizontal oil production wells in the D2 reservoir, one horizontal oil production well targeting the D1 reservoir, and one water-injection well in the central Fault block 1 and Fault block 2 areas of the field.

All wells will be drilled from a single field location via a Well-head Support Structure (WSS) and mobile offshore production unit (MOPU). Fabrication of the WSS is complete and is in transit to Nigeria for delivery to the project.

The company is in the process of finalizing contract discussions on the production facilities. Associated gas produced will be utilized as fuel for the facilities’ power generation and as gas lift to assist well productivity.

Following completion of the initial Ebok development phases, it is planned that the second phase development will be launched, incorporating the full development of the D1 reservoir (Fault block 1 & 2 areas) and the now de-risked Fault block West, while appraising the potential within the West Flank Qua Iboe structure (150 MMbbl STOIIP, estimated 45 MMbbl recoverable resources) and Fault Block North (30-m bbl STOIIP, estimated 9 MMbbl recoverable resources).

Afren currently plans to drill one appraisal well at Okwok in mid 2010, and is engaged in studies to determine the optimal well location and development concept, maximizing on development synergies with Ebok.

11/03/2009

More in Drilling & Completion