Heritage finds oil-bearing zones in Ugandan well

Uchenna Izundu
International Editor

LONDON, Jan. 16 -- Heritage Oil has found oil-bearing zones totaling 40 m in its Kingfisher-1A sidetrack well on Uganda's Block 3A in Lake Albert. The block spans 1,991 sq km.

The company will test the zones when it finishes drilling the well, which has reached 2,962 m and has been cased to 2,502 m. A spokesman for partner Tullow Oil told OGJ that it is negotiating with companies to secure a rig to drill to 3000-4000 m TD over the next 45 days

Heritage Oil said: "The Kingfisher prospect is a very large structural high that is expressed at surface on the bed of Lake Albert." Seismic data indicate the Kingfisher prospect has an area extent of up to 70 sq km, although the Kingfisher-1A well will only explore a limited part of this structure, it said.

Heritage and Tullow Oil have a 50:50% interest in the block. Heritage plans to gather 270 sq of 3D seismic over the Kingfisher structure during the first half of 2007. The partners are appraising other options to carry out more exploration on Kingfisher and other prospects in Lake Albert.

Last November, the upper zone of the Kingfisher-1 well tested at a stabilized flow rate of 4,120 b/d through a fixed 1-in. choke at a flowing well head pressure of 221 psia. The 30° gravity oil was sweet with a low gas-oil ratio and some associated wax (OGJ Online, Nov. 7, 2006).

Contact Uchenna Izundu at uchennai@pennwell.com.

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