Comoros

Comoros - Blocks 35, 36 & 37

Blocks 35, 36 & 37 cover a deep water area of 16,063 sq km (circa 4 million acres).

The blocks are outboard of circa 200 TCF of gas in place discovered in Rovuma Areas 1 and 4, offshore Mozambique. The joint venture partners of Rovuma Areas 1 and 4 include Anadarko Petroleum Corp., China National Offshore Oil Corp. (CNOOC), Eni S.p.A., ExxonMobil Corp., Mitsui & Co. and PTT Exploration and Production (PTTEP).

Despite its close proximity to these world-class discoveries and highly competitive exploration basins, the Comoros are still largely underexplored. No oil and gas wells have yet been drilled in the country. The gross unrisked prospective resources from the Competent Persons Report (August 2018) by ERCE are as follows:

Oil Case

Oil Gross Unrisked
Prospective Resources (MMstb)

Associated Gas Gross
Unrisked Resourc  es
(Bscf)
Chance
of
Success
Discover
Working
Interest
Prospect Low Best High Mean Low Best High Mean
Eocene 422 2,125 10,383 4,501 61 318 1,543 676 19% 65%
Cenomian 305 1,385 5,873 2,602 44 208 879 389 16%
Probabilistic
Aggregation
448 2,341 10,324 4,545 70 355 1,576 723 27%

 

Gas Case

Gas Gross Unrisked
Prospective Resources
(Bscf)

Condensate Gross
Unrisked Resources
(MMbbl)
Chance
of
Success
Discover
Working
Interest
Prospect Low Best High Mean Low Best High Mean
Eocene 3,241 14,996 66,258 29,379 17 199 2,457 1,360 19% 65%
Cenomian 2,802 11,734 43,679 19,939 13 151 1,654 901 16%
Probabilistic
Aggregation
3,934 17,826 70,664 31,968 23 277 2,724 1,332 27%
 

Notes:

1) "Gross Unrisked" prospective resources are 100% of the volumes estimated to be recoverable from an accumulation. These are unrisked and have not been multiplied by a chance of success nor a chance of development.

2) Chance of Success is an estimate of the probability that drilling the prospect would result in a discovery as defined under SPE PRMS.

3) "Probabilistic Aggregation" accounts for dependent risks and the "Chance of Success" is the chance of finding one or more prospective layers.

Prospectivity

Following ratification of the Comoros PSC in 2014, Discover and Bahari acquired and interpreted circa 3,900 km of 2D seismic data, and conducted a range of exploratory studies.

Interpretation of the 2D seismic surveys, gravity and magnetic data, seep studies and regional studies identified a number of structural and stratigraphic traps in stacked Eocene and Cenomanian fans, analogously to the Eocene sands encountered in Coral (Area 4) and Tubarao (Area 1) reservoirs. Basin modelling studies support a strong case for an oil charge in outer Rovuma delta.

In a Competent Persons Report dated August 2018, ERCE, the UK-based independent energy consulting group, estimates that two partly stacked prospects in Comoros blocks 35, 36 & 37 together contain gross mean unrisked prospective resources of circa 7.1 billion barrels of oil (+1.1 TCF of associated gas) in an oil case or 49 TCF of non-associated gas (+2.3 billion barrels of condensate) in a gas case.

Work Programme

After completing the first exploration phase in April 2018, the partnership moved into the second exploration  phase with the aim to acquire 3D seismic data in 2019 to mature and further de-risk identified prospects.

Partnership

  • Discover Exploration: 60%

  • Bahari Resources: 40% (operator)