The acid stimulation of certain Phase 1 production wells in the Jubilee field has proven to be successful, increasing gross production levels from 63,000 bopd at the middle of 2012 to a recent production rate of around 85,000 bopd, in line with expectations.
In addition, the Jubilee Phase 1A development project is progressing well with five of the eight wells drilled, all of which encountered good quality reservoir on prognosis.
An operational update released by Tullow last week said following extensive unplanned maintenance work on the Sedco Energy rig, well completion operations commenced at the end of October and Phase 1A production is expected to begin from one well in the near future.
“By the end of the year, an additional Phase 1A producer is expected to be brought on line and a further acid stimulation on a Phase 1 well is expected to be completed”, it said, adding that that work is expected to take gross Jubilee production above 90,000 bopd by the end of the year with capacity production for the FPSO expected to be reached in the first half of 2013 as further Phase 1A production and injection wells come on line.
According to the update, in the second half of 2012, the Tweneboa, Enyenra and Ntomtne (TEN) project made good progress and Tullow and partners submitted the Plan of Development to the Minister of Energy in early November 2012. The development is being designed with sufficient flexibility to allow both TEN resources and nearby discoveries to be tied into an FPSO.
Following the Wawa discovery on the Deepwater Tano block in July 2012, an appraisal programme is now being evaluated. The Okure exploration well to the south of TEN is currently being drilled and a result is expected in the coming weeks. The rig will then move to drill the Sapele exploration well to the southwest of Jubilee.
The release said those wells will complete the exploration campaign on the block before the licence period ends in January 2013.
Ministry of Energy