Basin area: 606,234 km 2

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1 Brazil Round 10 Amazonas Basin Geologists Andrei Dignart and Juliana Ribeiro Vieira Bid Areas Department

2 Location Purus Arch Manaus Basin area: 606,234 km 2 Modified from Gonzaga et al., 2000 Paleozoic Intracratonic basin Covered by Meso-Cenozoic strata

3 Sedimentary Infill Modified from Gonzaga et al., 2000

4 Infrastructure

5 Infrastructure Mauá Thermoeletric Plant Location: Manaus Power: 136 MW Manaus

6 Infrastructure Investments Federal Government of Brazil will invest around US$ 3.2 billion in the transportation sector ( )

7 Exploration History

8 Exploration History Petroleum exploration in the Amazonas Basin started in It was carried out by the Brazilian Geological and Mineralogical Service (SGMB) - in this time the focus was coal exploration. In 1925, the first oil and gas shows occurred near the Itaituba city. In 1953, Petrobras was created. The exploratoy efforts in Amazonas Basin can be divided into three phases: Phase stratigraphic wells and 58 wildcat wells were drilled. Results: sub-commercial discoveries in the Nova Olinda reservoirs (1-NO-1, 1-NO-3 e 1-NO-4-AM) and some wells with oil/gas shows. Phase Petrobras improved seismic method and 36 wells were drilled. Results: two discoveries: 1-LT-1-AM (Lago Tucunaré) and 1-ICA-1-AM (Igarapé Cuia). Phase 3 Since 1999 After the creation of the ANP, in 1999, Petrobras discovered gas in the well 1-RUT-1-AM which resulted in the fields nowadays under development, Azulão and Japiim.

In 1953, Petrobras was created. The exploratoy efforts in Amazonas Basin can be divided into three phases: Phase 1 1953-1967 53 stratigraphic wells and 58 wildcat wells were drilled.

9 Exploratory Activities

10 Exploratory Activities post-stackstack 2D Seismic pre-stack 2D Seismic 212 wells: 107 wildcats and 61 stratigraphics 36 specials 37,958 km of 2D seismic 2D and 210 km² of 3D seismic 934,537 km² of grav/mag

stratigraphics 36 specials 37,958 km of 2D seismic

11 Bouguer Gravimetric Map mgal

12 Magnetic Anomaly Map nt

13 Aerogeophysical Project ANP/ Covered area: 591,957.7 km² Flight height: 1,400-1,800 m Flight spacing line : 6 km (E-W) Concluded Ongoing

14 Seismic Reprocessing ANP/2005 Lot 3 Location: Northern Basin Sector reprocessed 2D 2D 2D seismic : 6,414 km 217,581 registers

15 Seismic Reprocessing ANP/ RUT-1-AM Before After

16 Seismic Reprocessing ANP/2005 Before After

17 Tectono- Stratigraphic Evolution

Tectono-Stratigraphic Evolution Cretaceous-Tertiary Magasequence Alter do Chão, Solimões and Uçá formations Sedimentation: continental (fluvial and lacustrine) Juruá tectonic event Magmatic event

18 Tectono-Stratigraphic Evolution Cretaceous-Tertiary Magasequence Alter do Chão, Solimões and Uçá formations Sedimentation: continental (fluvial and lacustrine) Juruá tectonic event Magmatic event Gondwanide Orogeny (260 Ma) Carboniferous-Permian Megasequence Tapajós Group Monte Alegre, Itaituba, Nova Olinda and Andirá Formations Sedimentation : continental and restrict marine Devonian-Carboniferous EohercynianMegasequence Orogeny (330 Ma) Urapadi and Curuá Groups Maecuru Maecuru, Ererê, Curiri, Oriximiná and Faro Formations Sedimentation : fluvial-deltaic deltaic, neritic and glacial marine Caledonian Orogeny (400 Ma) Ordovician-Devonian Megasequence Trombetas Group Autás-Mirim Mirim, Nhamundá. Pitinga and Manacapuru Formations Sedimentation : marine clastics PROTEROZOIC Purus Group Prosperança and Acari Formation

Devonian-Carboniferous EohercynianMegasequence Orogeny (330 Ma) Urapadi and Curuá Groups Maecuru Maecuru, Ererê, Curiri, Oriximiná and Faro Formations Sedimentation : fluvial-deltaic deltaic, neritic

19 Petroleum System

Petroleum System Source Rock DEVONIAN DEVONIAN (Frasnian) radioactive black shales (Barreirinha Formation) TOC: 2 to 5% (S2) ~ 15mgHC/gRock Organic Matter type II (anoxic marine environment) SILURIAN

20 Petroleum System Source Rock DEVONIAN DEVONIAN (Frasnian) radioactive black shales (Barreirinha Formation) TOC: 2 to 5% (S2) ~ 15mgHC/gRock Organic Matter type II (anoxic marine environment) SILURIAN Schematic Stratigraphic Chart, P.R.C Cunha et al., 1993 SILURIAN (Landoverian-Wenlockian) radioactive black shales (Pitinga Formation) TOC < 2% (S2) ~ 4 mghc/grock Organic Matter type II (marine environment)

SILURIAN Schematic Stratigraphic Chart, P.R.C Cunha et al.

21 Petroleum System Source Rock Isopach map of Barrerinha Formation Thickness in meters Contour Interval = 20 m Modified from Gonzaga et al., 2000

22 Source Rock: TOC Legenda COT(%) 0,4 1,8 3,0 4,2 0,6 2,0 3,2 4,4 0,8 2,2 3,4 4,6 1,0 2,4 3,6 4,8 1,2 2,6 3,8 5,0 1,4 2,8 4,0 5,2 1,6 Blocos Ofertados - Rodada 10 Campos em Desenvolvimento Source: Gomes, 2008

23 Source Rock: Hydrogen index Legend Hydrogen Index mghc/gcot Blocos Ofertados - Rodada 10 Campos em Desenvolvimento Source: Gomes, 2008

24 Source Rock: Source Potencial Legend Source Potencial kg HC/t rocha Blocos Ofertados - Rodada 10 Campos em Desenvolvimento Source: Gomes, 2008

25 Thermal Maturity Modified from Gonzaga et al., 2000 Maturity The Ro data show that thermal evolution is mainly controlled by the burial history in the trough area Thermal effect of igneous intrusions played an important role only where dykes and sills are hosted on source rock The intrusions effect is dominant in the eastern Amazonas Basin %Ro < < %Ro < 1.35 %Ro < 1.35 %Ro > 1.35

26 Petroleum System Reservoirs DEVONIAN CARBONIFEROUS Nova Olinda Formation Monte Alegre Formation Curiri Formation CARBONIFEROUS RESERVOIRS (Nova Olinda Formation) Island bars/eolian CARBONIFEROUS RESERVOIRS (Monte Alegre Formation) Eolian DEVONIAN RESERVOIRS (Curiri Formation) Glacial/Marine Schematic Stratigraphic Chart, P.R.C Cunha et al., 1993

27 Nova Olinda Reservoirs 1-RUT-0001-AM

28 Curiri and Monte Alegre Reservoirs Eo lian Sandstones CarboniferousEo Devonian glacial/marine sandstones Modified from Gonzaga et al., 2000

Petroleum System Seals DEVONIAN Seals for Nova Olinda reservoirs = Nova Olinda Evaporites CARBONIFEROUS Itaituba Formation Nova Olinda Formation Curiri Formation

29 Petroleum System Seals DEVONIAN Seals for Nova Olinda reservoirs = Nova Olinda Evaporites CARBONIFEROUS Itaituba Formation Nova Olinda Formation Curiri Formation Schematic Stratigraphic Chart, P.R.C Cunha et al., 1993 Seals for Monte Alegre reservoir = Carbonatos Fm. Itaituba Seals for Curiri reservoir = shales and diamictites

30 Petroleum System Traps Asymmetric Anticlines Structural Traps Anticlines Related to Reverse Faults Stratigraphic Traps Pinch-out Horst Structure Shear Tectonic Reactivation Paleogeomorphic Source:

31 Events Chart Magmatism Cretaceous Uplift Tertiary Tectonics Modified from Gonzaga et al., 2000

32 Fields under Development

33 Location map JAPIIM AZULÃO

34 Azulão Field (1999) VGIP = 5 BCM 1-BRSA-126-AM 1-RUT-0001-AM Area: 21 km² Reservoirs: Nova Olinda sandstones (Carboniferous) Fluid: gas + condensate Depth: - 1,560 m Ø = 20-22% K = 300 md

35 Azulão Field 1-RUT-1-AM Top Paleozoic Sill Top Reservoir Top Monte Alegre Formation Top Barreirinha Formation (1999)

36 Azulão Field: Nova Olinda Reservoirs Top Nova Olinda Reservoirs: time structural map

37 Japiim Field (2001) VGIP = 661 MMCM 1-BRSA-98-AM 3-BRSA BRSA AM Area: 12.2 km² Reservoirs: Nova Olinda sandstones (Carboniferous) Fluid: non-associated gas Depth: - 1,470 m Ø = 19-22% K = md

38 Japiim Field 1-BRSA-98-AM 1-BRSA-98-AM Top Paleozoic Top Sill Base Sill Top Nova Olinda Reservoir Top Barreirinha Formation Linha 0254-RL-155

39 Offered Sector

40 Offered Blocks JAPIIM AZULÃO 7 blocks Total offered area: 13,338 km²

41 Data Package Wells: 20 Seismic: 3,973 km 2D public post-stack stack 210 km² 3D public post-stack stack

42 Exploratory Opportunity AM AM--T-63 Top Nova Olinda Reservoir Line

43 Exploratory Opportunity AM-T-85 Top Nova Olinda Reservoir

44 Top Nova Olinda Reservoirs: time structural map

45 Top Nova Olinda Reservoirs: time structural map

46 Volume Estimation Variables for Volume Estimation: Sw = 25% Ø = 20% Bg = Lead Block AM-T-63 VGIP = 1,5 BCM Lead Block AM-T-62 VGIP = 17,1 BCM Lead Block AM-T-82 VGIP = 6,9 BCM Lead Block AM-T-83 e 84 VGIP = 35,4 BCM Lead Block AM-T-85 VGIP = 20,9 BCM

47 Minimum Exploratory Program Sector Exploratory class SAM-O New Frontier Number of blocks 7 Total bidding area 13,338 km² Exploration phase Exploratory periods Operator qualification 6 years years B Minimum bonus R$ 83, to R$ 185, Minimum depth Monte Alegre Formation (Carboniferous)

48 Final Remarks

49 Final Remarks The gas pipeline Urucu-Coari-Manaus is expected to start operation in September, The Manaus (capital of the Amazon State) electricity demand grows about 8% a year, mainly because of the industrial sector, which is responsible for 43% of this necessity. In 2006, a treaty was signed between Eletrobrás, Eletronorte, Manaus Energy and Cigás to support new thermoelectric power plants and change the energy matrix from oil to natural gas.

50 Final Remarks 62% of the wells already drilled in the basin show evidences of oil and/or gas. The offered blocks are near Japiim and Azulão gas fields. The main petroleum system Barreirinha - Nova Olinda is similar to Solimões Basin (Urucu Complex). There are 11 possible exploratory opportunities already mapped in the Nova Olinda play.

51 Final Remarks Considering the 11 opportunities already mapped, ANP estimates around 72 BCM of gas in the offered area

52 Andrei Dignart Juliana Vieira

source: Zalán et al., 1990 Area = 1,127,400 km 2 Stratigraphic record ranging in age from Late Ordovician to Late Cretaceous Thickness ~ 7,000 m

Brazil Round 10 Paraná Basin Eliane Petersohn, M.Sc. Geologist Bid Areas Department Location Total area ~ 1,500,000 km 2 source: Zalán et al., 1990 Area = 1,127,400 km 2 Stratigraphic record ranging in