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Harvest Announces Pre-Salt Ruche Oil Discovery

Source: www.gulfoilandgas.com 7/21/2011, Location: Africa

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Harvest Natural Resources, Inc. announced an update to its drilling operations in the Dussafu Ruche Marin-1 (DRM-1) well drilled in the Dussafu Marin PSC, offshore Gabon, West Africa. Harvest operates the Dussafu PSC, holding a 66.667% interest. The DRM-1 well was initially drilled in 380 feet of water. On June 10, 2011, Harvest announced an oil discovery in the pre-salt Gamba reservoir with plans to deepen the well to test Middle and Lower Dentale exploration potential and sidetrack to appraise the extent of the Gamba oil discovery.

Subsequently the DRM-1 well has been deepened to reach a true vertical depth subsea (TVDSS) of 11,355 feet to test the prospectivity of the Middle and Lower Dentale Formations. Log evaluation, pressure data and a fluid sample indicate that Harvest has discovered a second oil accumulation with approximately 35 feet of oil pay within the secondary objective of the Middle Dentale Formation.

The Gamba discovery has been appraised by drilling a sidetrack (DRM-1ST1) 0.75 miles to the southwest to test the lateral extent and structural elevation of the Gamba reservoir. The sidetrack was drilled to a TD in the Upper Dentale of 11,562 feet, (9,428 feet TVDSS) and found 19 feet of oil pay in the Gamba reservoir. Harvest will now sidetrack the DRM-1 well to the northwest of the original DRM-1 wellbore to further appraise the extent and structural elevation of the Gamba and the commerciality of the Ruche discovery.

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Related Articles: Artificial Lift  Cementing, Stimulation  Directional Drilling  Drilling  Drilling Engineering & Equipment Systems  Enhanced Oil Recovery  General  Logging, Perforating, Testing  Offshore Drilling  Reservoir/Completion Consultants  Workover & Well Services  Workover Rigs/Services 


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