From Onshore to Ultra Deep Water Insight into an African explorer Examples from South Sudan, Equatorial Guinea and Sao Tome & Principe
Who are we? • Largest privately held African acreage holder • Operating as sister companies in the West Africa region since 1991 and expanded into East Africa in 2015 • Currently holding 22 license blocks in 11 African countries and territories • More than 74,000 km² of acreage from onshore to shelf to ultra deep water • Production and Equatorial Guinea assets managed by Atlas Petroleum International Limited • Exploration assets held and managed by Oranto Petroleum Limited
Senegal Saint Louis Shallow Cayar Shallow Liberia LB-14 Ghana Saltpond Benin 5 & 6 Nigeria OML109*, OPL293, OPL320 JDZ 2 & 5 Sao Tome & Principe Block 3 Equatorial Guinea* I, J, H, P, EG02, EG10 Namibia PEL43 South Sudan B3 Uganda Ngassa shallow, Ngassa deep Historically also in Mali, Sierra Leone, Guinea Bissau, Gambia, Cote d’Ivoire & Togo to name a few
Onshore - South Sudan Licensee: Oranto Petroleum Ltd. (operator) 90% Nile Petroleum (carried interest) 10% Area: 24,415 km² EPSA signed: March 2017 Work Program: 3+2+1 years First commitment period: 5,000 km² airborne gravity and magnetics 750 line km 2D seismic Acreage is a true exploration frontier basin with no pre-existing seismic or well data, for scale Wales is 20,780 km². Block B3 has highlighted two Cretaceous aged sedimentary basins which are associated with the Central African Shear Zone, our belief is they share the regional source rock equivalent to the Abu Graba formation in the Muglad basin.
Combining public and satellite data to create a framework for a geological model Surface geology with gravity data to highlight basin architecture and pinpoint areas of interest, two potential basins identified in on edge of regional basement line, southern most basin ranked as main interest for gravity/magnetic survey Regionally three rift phases have been identified between the Late Jurassic and Palaeocene, later followed by Eocene inversion. Rift periods are generally indicatory of shale deposition whilst basin sag is dominated by clastics. Study suggests B3 is not directly connected Muglad basin which matures to the north, however Post Tali basin is of similar age. Basin size comparable to Lake Albert rift basin or South Lokichar basin with estimated oil resources of 3.5 bln and 4.5 bln barrels.
2018 Airborne Gravity and Magnetic Survey • March/April 2018 BGP conducted survey • Acquisition QC services provided by Getech Group • Line spacing 1km * 5km grid • Total line km = 7406 km • Aim to capture depocenter and basin flanks, highlight structures for seismic planning • Done in conjunction with Ministry of Petroleum and NilePet and cooperation from local government and community liaisons in 51 settlements • Resulted in safe and uneventful operation with only downtime attributed to damaged magnetic sensor coupling • Survey is the first exploration operational activity in South Sudan’s history • Oranto planning to commence seismic operations by end of 2018
Offshore - Gulf of Guinea Large proportion of Atlas Oranto Group focus is on Gulf of Guinea, often seen as early investor in frontier basins Oranto was previously early entrant into the Transform Margin exploration period Neighbouring Gulf of Guinea companies include Kosmos, BP, GALP, Ophir, Clontarf & Exxon Mobil Existing and previous partners with Noble, Glencore, Chevron, Kosmos, Lukoil
Equatorial Guinea – Block 02 • Previously partner to Pan Atlantic but now operator • Numerous AVO supported prospects on basin floor fans • Working analogues with block I discoveries including Aseng and Alen fields • Seismic supported reservoir play fairway from shelf to deep water
EG-02 Ecoene Palaeography Basin Floor System Amplitude Map - Upper Eocene Bravo-1 ✓ – GR Por m) Cal Vol ✓ Sat Vp Vs Rho ✓ ✓ – ✓ EG-02 – Eocene Bravo-1 Pongue Slide Rio Muni-1 L-1 Limit of Cretaceous Carbonates L-2 Tertiary Clastic Input Late Cretaceous Clastic Input Eviondo-1 Net Thickness = 75 m Combined Sediment Input Vectors Avg. Porosity = 28.2% Inversion Anticlines Volcanics Block W Akom Slide Complexes Ebano Oveng Okume Abang Elon Rifted Continental Crust Ceiba Modified after Rosendhal & Groschel-Becker 1999, and ECL (RPS) Rio Muni Report 2001.
EG-02 Upper Cretaceous Palaeogeography Cheetah-1 Shelfal?, by-pass? EG 02 EG-02 Upper Cretaceous Block I, O and Yo-Yo - Miocene Basin Floor Fans discoveries made by Noble Energy Fan Complex 3 Cheetah-1 13320 ft Reservoir: Campanian channel/fan complex? Charge: Ce/Tu shales. Trap: 4-way dip closure Cheetah-1 Area Volume: Predrill: >100 MMBOE (Noble) Noble Energy Results: ‘Crude oil and natural gas shows in multiple Noble Energy non- commercial reservoir sands’ Fan Complex 2 Ebome Fields - Perenco operated production, principally from Lower Cretaceous. KH field is nearest Upper Cretaceous discovery to Ntem. – Cretaceous age fan? Bamboo-1 Good Similarity with Sanaga Sud field? Upper Cretaceous High Amplitudes = potential reservoir Upper Slope Fan CM-1A & Eboni-1 - Good quality sands. CM-1A Fan Complex 1 reported thin net pay and oil shows while Eboni- 1 saw gas shows. Stratigraphic traps. • Three Upper Cretaceous Fan Complexes comprising stacked reservoir intervals. • AVO Class 2P anomalies Bamboo-1 well encountered thick, porous sandstones in Upper Cretaceous target, but water-bearing. observed at various levels Top seal proven by Bamboo-1 and Eboni-1 Charge encouragement from kick taken at base of Bamboo-1 within the stacked complexes. Devon’s P2 Discovery well. 45m net pay in Upper Cretaceous sands Sterling Energy
Sao Tome & Principe - Rio Muni basin • Attracted recent attention with Kosmos, Galp, BP entry in to Sao Tome & Principe sector in 2015 and 2018 • Ophir entry into EG-24 in 2018 • Numerous 3D seismic surveys acquired in surrounding area totalling around 20,000 km² • Combined Oranto has 3,125 km² seismic on STP block 3 • Three potential plays identified – Miocene - Eocene – Campanian - Santonian ~4,000km² – Cenomanian on EG- 24 ~16,000km² on blocks 6,11,12
Prospect identification on vintage data Oranto currently processing and merging 2014 & 2017 3D seismic data sets over prospects Results expected in 2018 Q4 Anticipating multiple billion barrel resources in place Top Cret Miocne - Ecoene fan Campanian Low Amp dip closures Stacked fan systems in Campanian Turonian / Santonian Brightening response related to high porosity reservoir, coupled Alb-Apt Mapped leads and prospects Low frequency high amplitude event- “oil - with a fluid? shale” or reservoir?
Other operations in progress Source: Kosmos online Senegal St. Louis Block - Shelf to deep water acquisition • 2,000 km² seismic survey commencing imminently • Proprietary survey being acquired by SCF Ivan Gubkin 3D vessel • Survey to capture historic shelf leads and updip portion of Cenomanian to Campanian plays targeted by Kosmos • Expecting high farm-in interest on survey/processing completion
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