By OGJ editors
HOUSTON, Apr. 28 -- Pan-Ocean Energy Corp. Ltd., St. Helier, Jersey, UK, recently completed three development wells and has spudded another, all in the northeastern part of Tsiengui oil field in Gabon.
Production test results are not yet available for the three completed wells, which, along with the existing wells, are capable of producing 7,200 b/d of oil (6,660 b/d net), Pan-Ocean said.
The completed wells in Tsiengui now total six. Pan-Ocean said it expects to have eight to nine producing wells in Tsiengui, capable of 9,000-10,000 b/d net, by the time its export pipeline is commissioned in July. This added production would bring total field output to 18,000 b/d.
The first development well, TST-5, was drilled to a measured TD of 2,368 m, including more than 500 m of completed horizontal drain in the main Cretaceous Gamba sandstone.
TST-6, spudded 1 month later, reached a measured depth of 2,706 m. This well targeted and reached the eastern edge of the field. It included a horizontal drain of 844 m, which is oil-bearing from both the Gamba and Dentale zones. The last 500 m of drain were completed for future production. Pan-Ocean said it intends to exclude the Dentale zone from completion of this well for production engineering reasons.
The TST-6 well results are still being evaluated but show Dentale is "an excellent reservoir," Pan-Ocean said. Drilling results also reveal that Tsiengui is structurally higher in the central part of the field and that the eastern boundary of the field extends farther east than previously interpreted.
The TST-7 well, with a 650 m horizontal drain, was to test the production potential entirely in the Dentale zone for the first time at Tsiengui. Logging results of the drain section show excellent reservoir properties, similar to those at Obangue oil field to the south, Pan-Ocean said.
The KCA Deutag T-48 drilling rig is currently drilling the seventh development well—TST-8—a Gamba horizontal drain. It is the company's fourth horizontal well this year.
Meanwhile, construction of Pan-Ocean's wholly owned and operated crude oil export pipeline is on schedule, with about 23 km of the 33 km of 10-in. pipeline completed. Also, initial construction of the two reheating and repumping stations is under way (OGJ Online, Feb. 21, 2006). Completion of the pipeline is scheduled for June, and its commissioning is planned to coincide with the completion of the Tsiengui Central Production Facility and the Coucal Export Pump Station in July 2006.
