Reprocessed seismic lines are in for Invictus’ world-class gas prospect

By Meagan Evans. Published at Mar 5, 2019, in Mining

Invictus Energy Limited (ASX:IVZ), has today reported on its progress on the seismic data reprocessing and interpretation on its Cabora Bassa Project.

The Cabora Bassa Project encompasses the Mzarabani Prospect, a multi-TCF conventional gas condensate target which is potentially the largest, undrilled seismically defined structure onshore Africa.

The company has received fast-track data for two key lines covering the Mzarabani structure which has resulted in a significant improvement in the quality of the imaging of the subsurface and over the Mzarabani Prospect.

This reprocessed dataset will enable the identification of additional prospects and leads within acreage prior to farm out process. The data quality is excellent, improving definition over the giant Mzarabani Prospect, with the final full dataset for remaining lines in Cabora Bassa Basin area due in April.

The two dip lines that cover the giant Mzarabani Prospect will enable Invictus to refine the volumetric estimates of the primary Upper Angwa target as well as quantify the prospectivity of the horizons above and below in this massive, stacked prospect.

The final full dataset encompassing the entire Cabora Bassa Basin area will be delivered in April. The newly processed seismic data will enable the mapping and interpretation of additional prospects and leads within the SG 4571 area and integrated with the newly reprocessed gravity and aeromagnetic datasets.

Seismic Line 013 Processing Results
Seismic Line 013 Processing Results
Seismic Line 005 Processing Results
Seismic Line 005 Processing Results

Invictus Managing Director Scott Macmillan commented: “We are pleased to have received the initial data from our contractors and to see the significant improvement in the quality of the seismic data and subsurface imaging. As expected, the reprocessed data is on track to provide a superior data set with which to better define the Mzarabani Prospect as well as revealing additional prospectivity.

“Overall, there is significant improvement in the reflector continuity and sharper definition of the fault geometries – this will allow a more accurate and confident assessment of the prospect. Additionally, the better imaging, particularly along the basin margin fault will enable the delineation of the anticipated traps that comprise the basin margin play which have been particularly successful in other interior rift basins in Africa.

“The results have been possible due to significant increases in computing power and processing techniques that were not available when the data was acquired over 25 years ago.

“Once the full dataset is received next month and the interpretation is completed, the company expect to add materially to the prospective resource estimate base of the Mzarabani Prospect at 3.9 Tcf + 181 million barrels of gas-condensate (gross mean unrisked) from further prospect and lead identification within our acreage.”

Additional Work Programme

The company will provide estimates on the additional potential at the Cabora Bassa Project which will benefit from the ongoing 2D seismic reprocessing and interpretation work. Following on from the reprocessing work, a Final Independent Prospective Resource Report encompassing the entire SG 4571 area will be delivered. IVZ will continue with its geological and geophysical studies including additional basin modelling and a further resource estimate leading into a planned marketing programme to attract a farm-out partner.

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