Block 3105 Manambolo
Block 3105 Manambolo:Manambolo block is the smallest of the blocks at 3,995 square kilometers (1.0 million acres). The prospect on this Block was not well defined by the pre-existing seismic data; however, prior drilling in 1987 encountered the best well test in Madagascar. The seismic data was correlated to six prior wells on the western portion of the block. Four of the wells had oil and gas shows during drilling, but did not produce on test. The one 1987 well that showed promise was West Manambolo #1, which was drill stem tested and flowed 15.6 mmcfd. A follow-up offset well drilled in 1990 was a dry hole and subsequent 2009 seismic and geologic analysis indicates that the WMBL #1 gas interval migrates to surface with no potential trapping locations present.
The 2009 seismic analysis developed two areas as indicated below;Prospective Area 1 was a direct outcome of the 2009 seismic acquisition; and Prospective Area 2 resulted from applying interpretation adjustments identified in 2009 seismic to prior seismic data.
The GORE micro seepage output has been overlaid on the prospect areas on the map below.
- Hydrocarbon Potential is indicated by red closures which represent a greater than 50% probability of subsurface trapped hydrocarbons.
- Prospect Area 1 does not appear to have any significant areas with hydrocarbon exceeding background levels.
- Prospect Area 2 indicates significant areas of potential, however the hydrocarbon patterns consistent are more indicative of fluvial or turbidite channels rather than assumed closure identified by the seismic analysis.