Ebok field development update

Afren plc (AFR LN)

Ebok field development update

London, 23 December 2010 - Afren plc ("Afren" or the "Company"), issues the following update on development activities for the Ebok field, located offshore south east Nigeria.

Highlights

u Flow tests to date on three producers on the Central Fault Block have delivered a constrained aggregate rate of 12,500 bopd

u Test data confirms initial Phase 1 production expectation of 15,000 bopd should be exceeded, with more than 35,000 bopd from Phases 1 and 2 anticipated by end Q2 2011

u 24° API crude and excellent reservoir properties demonstrated

u The well head platform for Phase 1 has been successfully installed in the field

u Installation of the well head platform for Phase 2 has been accelerated and will be completed in the next few weeks

u All pipelines are on site in the field and will be installed in the next few weeks

u Other facilities in transit to field location with immediate installation and commissioning expected upon arrival in January 2011

Phase 1 development drilling update

The Adriatic lX jack up drilling unit is currently drilling at the Ebok field, where production testing has been undertaken on three of the five horizontal production wells as part of the Phase 1 development. The test results demonstrate excellent reservoir properties with porosity of between 30% to 35% and multi Darcy permeability. The wells flowed 24° API oil.

The test results undertaken to date have delivered a constrained aggregate rate of 12,500 bopd. Together with the remaining production wells, these results provide confirmation that the Company's production expectation of 15,000 bopd from Phase 1 should be exceeded.

Facilities update and production start up

The Ebok Floating Storage and Offloading vessel (FSO) set sail from the Yulian shipyard in Shenzhen, China, on 2 December 2010 and is currently in transit to the field location. Departure and expected arrival time at the field location will coincide with the Mobile Offshore Production Unit (MOPU), which is expected to arrive in late January 2011. The vessel was converted from an existing tanker, and has a storage capacity of 1.2 million barrels and will accommodate regular crude offtake by tankers up to Very Large Crude Carrier (VLCC) size.

The MOPU, which has undergone refurbishment at the Gulf Copper shipyard in Galveston, USA, has been converted from an existing jack up drilling rig by removing the drilling package and replacing it with a newly fabricated processing module capable of producing 50,000 bopd, installing new accommodation quarters for up to 30 crew and a new helideck.

Phase 2 development update

Installation of the Ebok Phase 2 wellhead platform, at the West Fault Block location, is currently underway and expected to be completed in the next few weeks. Development drilling, incorporating four horizontal production wells and up to two water injection wells, is set to commence in early February 2011 with the GSF High Island Vll jack up drilling rig, once infill drilling operations on the Okoro field have completed. Production start up from Phase 2 is currently expected in early March 2011, with a combined production of more than 35,000 bopd from Phases 1 and 2 expected by end Q2 2011.

Osman Shahenshah, Chief Executive of Afren, commented:

"The Ebok well tests undertaken to date provide confirmation of Phase 1 production expectations of more than 15,000 bopd and have demonstrated excellent reservoir characteristics. Development work is at an advanced stage, and following installation and commissioning of the production and storage facilities at the Ebok field in January 2011, Phase 1 production start up is expected during February 2011, thereby establishing a new production hub for Nigeria."

Notes to Editors

Afren is an African focused independent oil and gas exploration and production company listed on the main market of the London Stock Exchange and constituent of the Financial Times Stock Exchange Index of the leading 250 UK listed companies. Afren has a portfolio of 27 assets across nine countries across the full cycle E&P value chain. Afren is currently producing from its assets offshore Nigeria and Côte d'Ivoire, with the significant Ebok appraisal and development project due onstream in 2010 from Nigeria. Afren has exploration interests in Ghana, Nigeria, Côte d'Ivoire, Congo Brazzaville, the Joint Development Zone of Nigeria - São Tomé & Príncipe, Kenya, Ethiopia, Madagascar and Seychelles. For further information please refer to www.afren.com.