First EAGE/ASGA Petroleum Exploration Workshop
Workshop on Petroleum Exploration in Angola – October 2017
Challenges and Solutions for Deep Water Exploration in Angola
The last three decades have played host to Angola’s deep water exploration efforts, which are generally viewed as extremely successful. For the most part exploration efforts were restricted to the Congo Basin. From the early 1990’s to 2014, in excess of 110 discoveries were made yielding over 20 billion barrels of oil equivalent within the basin. By 2010, wildcats had a better than 50% success ratio however, the size of discoveries had declined significantly from those made in the mid 1990’s.
The Exploration of the Congo Basin was followed by the pre-salt exploration of the Kwanza Basin triggered in part by the pre-salt successes in the Santos and Campos Basins offshore Brazil. Although some pre-salt exploration within the Kwanza basin had taken place prior 2000, a large pre-salt exploration campaign formally started in 2011 with contracts for new exploration acreage within the Angolan Deep Water Congo and Kwanza/Benguela Basins. Discoveries by Maersk and then a string of discoveries by Cobalt seemed to suggest that the Kwanza Basin was likely to yield similar results to those of the Santos and Campos Basins. Disappointingly after the initial successes, the subsequent series of wells were unsuccessful, sub-commercial or encountered gas and condensate rather than oil in large commercial volumes. In addition a number of wells encountered CO2, sometimes associated with dry gas or even condensate.
This workshop aims to address some of the challenges faced by Angolan Deep Water Explorers.