Nabirm announced that in conjunction with its partner, NAMCOR (10%) that it has concluded the interpretation of a 2D seismic survey on Block 2113A located in the Walvis basin, offshore Namibia, by US-based ION Geophysics.
The license block covers 5750sq km with 3600sq km located offshore and 2150sq km located onshore.
BGP International using the vessel M/V BGP Pioneer acquired the survey; earlier in 2015 the same vessel completed the Ion Geophysical NamibiaSPAN 2D survey offshore.
The M/V BGP Pioneer acquired 684km of 2D seismic data plus ship borne gravity and magnetic data within Block 2113A. The survey was acquired with a single 9km cable towed 8m below the sea surface. The acquisition was completed on 20 March 2015.
Parallel Geoscience processed 2D seismic data in April and May of 2015. Ion Geophysical was contracted to perform the 2D seismic interpretation and received/loaded the processed 2D dataset into SMT/Kingdom on 6 July 2015, the final reports were published on 4 November 2015.
The objective of the seismic interpretation was to identify key depositional features (reflection types, continuity, terminations, downlap, toplap, onlap), structural features (highs, lows, faults and fault styles including normal, reverse, strike-slip) and anomalous reflection packages.
The most significant surface within the dataset is a strong reflector at the top of a thick succession of low frequency reflectors. Utilizing the NamibiaSPAN 2D data, these horizons were correlated into Block 2113A. In addition to these regional horizons, local surfaces were identified from the PEL 58 2D seismic survey exploration grid and are described as Surface 1, Surface 2, Surface 3 and Basement. Time structure maps, deph structure maps, isochrones and isopachs have been generated for these key horizons.
Further ION mapped six leads with total P mean unrisked recoverable resources of over 520 MMbbl. Stratiographic lead designed ‘Ondo’ is the largest and of principal interest, with a Pmean of around 230 MMbbl – ‘Ekiti’ is slightly smaller and exceeds 200 MMbbl.