Petroleum Systems in “Rift” Basins

Namibia: The Hunt for Oil and Gas Continues in the Land of Giants
-
Published:December 01, 2015
-
CiteCitation
Márcio Rocha Mello, Wagner Peres, Webster U. Mohriak, 2015. "Namibia: The Hunt for Oil and Gas Continues in the Land of Giants", Petroleum Systems in “Rift” Basins, Paul J. Post, James Coleman, Jr., Norman C. Rosen, David E. Brown, Tina Roberts-Ashby, Peter Kahn, Mark Rowan
Download citation file:
- Share
Abstract
Geological reconstructions in the last two years involving the elements and processes of the petroleum systems across the southern South Atlantic rifted margins of Namibia and Brazil show evidence of great similarities in the geochemical affinity of petroleum systems in the conjugate margin basins, although some differences are present in their structural and stratigraphic framework.
The results of three deep water wells drilled in 2013, in the Walvis and Orange basins, offshore Namibia, showed the presence of at least three prolific active petroleum systems; an early Barremian lacustrine saline, a Barremian marine siliciclastic, and a Cenomanian–Turonian marine anoxic, all of which are characterized by expressive correlations with world-class lacustrine and marine source rock entities. The occurrence of marine anoxic source rocks deposited in Barremian times suggests that sea incursions, in the synrift occurred earlier in the Namibian coast when compared with their Brazilian counterparts where the present of Late Aptian salt is observed (Santos and Campos basins).
The recovery of a marine light oil (41° API), for the first time, offshore Namibia, tested from Barremian turbidite sandstones in the Wingat-1 well in the Walvis basin, together with the penetration of at least three source rock systems intervals in the Wingat-1, Murombe-1, and Moosehead-1 wells, confirmed the oil-charged character of a new underexplored petroliferous basin in the deep water province of Namibia.
- Africa
- Atlantic Ocean
- basins
- biomarkers
- Brazil
- Campos Basin
- Cape Basin
- Cenozoic
- chromatograms
- continental margin
- Cretaceous
- depositional environment
- Espirito Santo Basin
- gas chromatograms
- geochemical methods
- geophysical methods
- geophysical profiles
- geophysical surveys
- lithostratigraphy
- Lower Cretaceous
- Mesozoic
- Namibia
- Pelotas Basin
- petroleum
- petroleum exploration
- plate tectonics
- rifting
- Santos Basin
- sedimentary basins
- sedimentary rocks
- seismic methods
- seismic profiles
- South America
- South Atlantic
- Southern Africa
- surveys
- Tertiary
- Orange Basin
- conjugate margins
- Luderitz Basin
- Espirito