Tchatamba Complex Oil Fields

Summary Information

• Operator: Perenco
• Country: Gabon
• Location: Kowe permit located 20 miles offshore
• Production start: 1998
• Partners: ONE
• Type: Oil
• Estimated Reserves:
• Production Volume:

+++ Description

• The Kowe Block, approximately 20 km offshore Gabon with a water depth of 100m, contains three fields, Tchatamba South, Tchatamba Marin and Tchatamba West, together the `Tchatamba Complex`.
• There are 3 platforms called Tchatamba-A (MOPU), Tchatamba South and the Tchatamba West
• Until 2003, the MADIELA FSO was utilised
• All crude produced is blended as part of Rabi Light Crude Oil

+++ Contractors

• **Modec:** Supply of FSO & MOPU
• **Stolt Offshore:** Tchatamba West pipeline installation
• **ETPM:** Tchatamba South pipeline installation

+++ History

• 1997 - Tchatamba West discovered
• 1998 - First oil produced
• 1999 - Tchatamba South started producing
• 2000 - First production from Tchatamba West
• 2003 - A permanent pipeline was constructed directly to the onshore Cap Lopez terminal
• 2007 - ONE acquired a stake from Devon Energy
• 2009 - Perenco acquired Marathon's stake

+++ Geology

• Production in all three fields is from the Lower Cretaceous Madiela reservoir, consisting of high permeable quartz and carbonate shallow marine sands.
• In addition the largest field, Tchatamba South also produces from the Upper Cretaceous Cap Lopez and Azile reservoirs.

+++ Links

1. ONE Kowe
2. Serimax Pipeline References
3. Marathon Announces Start of Production From Tchatamba South
4. Marathon Flows First Oil From Tchatamba West; Third Gabon Field on Stream
5. Devon Energy to Sell Assets in Gabon for $205.5 Million