Agenda 1) Introduction 2) Regional geology and exploration history 3) Ebok appraisal programme 4) Summary field potential 5) Ebok field development planning 6) Ebok drilling operations 7) Platforms and facilities 8)…
1) Introduction 4
Afren today - an established African independent Country Acquired WI (%) Operator Local Partner Work Prog. CTE DIVOIRE Cte dIvoire Ghana 1. Block CI-11 Q3 08 47.96% Afren PETROCI 2. Block CI-01 Q3 08 80.00%(1) Afren PETROCI A 3 1…
Ebok development material to delivering organic growth Pre-acquisition Ebok-1 well (1968) encountered four oil bearing sands Good quality 3D seismic data defines Ebok structure Minimal entry cost (US1/2P bbl) Indigenous…
Opportunity set re-visited Highest growth in proven reserves with significant reserves in West Africa Proved Oil Reserves Proved Gas Reserves Africa Total: 50 billion barrels Total: 219 Tcf Europe & FSU 77% 81% Middle East South…
2) Regional geology and exploration history www.afren.com
Ebok field location map Utue 1200 Regional geology and exploration history 2 www.afren.com
Ebok field regional geological setting Ebok Source: Sovereign Oil & Gas Regional geology and exploration history 3 www.afren.com
Stratigraphic column of eastern Niger Delta Eboks productive reservoirs are contained within the Pliocene Agbada Formation These are the main intervals for Nigerias oil and gas production Source: IHS Energy Regional…
Top D1 depth structure with field nomenclature Ebok-1: 1968 Ebok-2: 1970 Ebok-3: 1970 Ebok-4: 2008 North Fault Block West Fault Block FB1 FB2 SWFB Regional geology and exploration history 5 www.afren.com
Ebok dataset Ebok block boundary Line of Section (Next slide) Ebok dataset Mobil 1992 Acquisition Area covered by 3D seismic Regional geology and exploration history 6 www.afren.com
3D seismic - defined Ebok structure Ebok-1 Ebok-2 Mfon-1 Okwok-1 Okwok-2 500 1000 1500 2000 Regional geology and exploration history 7 www.afren.com
Initial discovery four oil bearing sands Initial discovery well (Ebok-1) encountered four oil bearing sands Significantly de-risked project at outset Regional geology and exploration history 8 www.afren.com
3) Ebok appraisal programme 1
Appraisal strategy pre Ebok-4 Ebok seismic re-interpreted Petrophysical evaluation on all wells completed Reservoir models constructed for Fault Blocks 1 & 2 Fault Block 1 & 2 reserves calculated Conceptual field development plan…
Appraisal drilling programme primary objectives Ebok-4 - appraisal well to evaluate D1 and D2 reservoirs in Fault Block 2 at a location up-dip of Ebok-2 Target crestal location of Fault Block-2 to prove maximum oil column and…
Ebok-4 drilling operations summary Trident IV rig moved onto location 4th November Commenced seabed coring and preloading operations (required to ascertain punch through risk) Began driving 30 pipe on 21 November Spudded well (26…
Ebok-4 log with pay summary Greater than expected Top D1 2466ss 4ft Gas oil column 171ft Oil Oil down to on LD1a, Base D1 2703ss LD1b and D2 4ft Gas Top LD1-A 2738ss - potential scope for 20ft Oil deeper contacts Base LD1-A…
Post well studies MDT and DST sample fluid analysis: - Black oil and gas PVT; Geochemical analysis Core - Routine rock properties - Special core analysis (SCAL) - Sieve analysis - Sedimentology study Fluid substitution study…
D1 core referenced to the LWD logs Total 72 ft of core cut in four runs Oil shows throughout core (except in cap 1 rock shale) Routine Core Analysis = 36% Kv = 8-10D Sw=12-15 Exceptional reservoir 2 = 32% Kv = 4D Sw = 18-20…
Ebok D2 regional setting Ebok 1 Ebok 2 Ebok 5 Ebok 4 Okwok 1 Okwok 8A Okwok 2 1179m 789m 8892m 2935m 1987m Thickening of the D2 into fault at Ebok will Ebok focus sand deposition. Okwok 3 3 3 1 Thickening Direction 3…
Fluid substitution modelling D2 summary Ebok - 4 Gas over Oil ( Insitu case model) Vp Gas 5418 s ; Vs Gas 2850 /s ; Den.Gas 1.74 gm/cc Ebok - 4 Oil Model Ebok - 4 Brine Model Vp Oil 6730 /s ; Vs Oil 2650 /s ; Den.Oil 2.01 gm/cc Vp…
4) Summary field potential 1
Composite map of field potential - update North Fault Block 30 mmbo STOIIP 9 mmbo recoverable* West Fault block 92 mmbo STOIIP 25 mmbo recoverable* D1 base case 77 mmbo STOIIP 26 mmbo recoverable* West Flank Qua Iboe D2…
Upside potential in the D1 reservoir D1 upside Base case D1 Summary field potential 3
Ebok D2 FB1 and FB2 area Surface attributes Amplitude supporting the FBN potential Further amplitude related potential in Northern part of field (under evaluation) Amplitude pattern on Zafiro Base case D2 Amplitude…
Ebok D2 upside case Warm colours indicate Sand deposition Blues indicate no Sand deposition RMS amplitude extraction supporting evidence for sand distribution. Warm colours indicate sand. Cold colours indicate no sand…
Western flank upside potential in field structure Deep potential to the south west of the Ebok field. 150 mmbo STOIIP potential can be developed as part of a phased development LOS 0.000 0.500 1.000 1.500 2.000…
Ebok D2 upside case The west similar trapping nature and character to the XOM Utue field. This is a major field of circa 200 mmbo to 300 mmbo STOIIP 0.500 1.000 1.500 2.000 2.500 Summary field potential 7
Indications that this play is oil bearing from Ebok-1 Ebok D2 Oil bearing interval at level of amplitude observed in the seismic Summary field potential 8
5) Ebok field development planning 1
Operational philosophy Fast track, fit for purpose solutions Safe planning and project execution Commitment to high standards of EHSS performance Team based development approach - all core competences reside within Afren Robust…
Phased development 53 mmbo base case, 99 mmbo upside potential Baseline data - 140 water depth - 55 km offshore - Standalone development required Development scenarios - FPSO linked to WHPs - MOPU linked to an FSO Production…
Phased development Phase 2a: D1 and LD1B FB1/FB2 and Ebok West (2011) - Seven horizontal production wells, two LD1B producers - 26 mmbo technical recoverable - Ebok West: six horizontal production wells and one water injection wells…
Reservoir modelling plan view of Base Case D2 Model Layer 1 Layer 20 Proposed well trajectories 1.8 bscf free gas North North Gas or water Grid cell size is x and y = 50m and z = 5ft Oil Five deviated wells ranging from…
Phase 1 development upside appraisal options North Fault Block West Fault Block D1 Oil in place FB1 and FB2 areas: 77 mmbo FB1 Ebok-2 SWFB FB2 D2 Oil in place FB1 and FB2 areas: 55 mmbo base case Incremental STOIIP Prospect…
Summary - Phase 1a production and appraisal objectives Phase 1a to comprise - Five D2 horizontal producers - One D2 Water injector - One D1 horizontal producer - Four pilot holes to optimally place D2 producers Appraisal…
Existing wells and two planned vertical appraisal wells Ebok-5 Ebok-1 Ebok-3 Ebok-4 Ebok-2 Top D2 depth Structure map Ebok-6 Estimated OWC -3795 from Ebok-2 shows (could be much deeper) Appraisal wells Ebok-5 and…
Proposed platform Location Ebok-5 Vertical D2 Water Injector drilled from Ebok-6 platform location Platform location will be to the south of the FB1/FB2 structures. The water injection well will be drilled first to…
4 Pilot Holes Sharing the same D2 producer top hole Platform Shared top hole Four D2 pilot holes will be drilled to define reservoir continuity and optimise the positioning of the production wells Ebok field…
Five D2 development wells drilled from single platform Platform Five horizontal production wells will be batch drilled and completed in the D2 reservoir Ebok field development planning 11
Phase 1a Development two appraisal wells, one water injector, four pilot holes, five D2 wells & one D1 well D1 Development Well One horizontal production well will be drilled and completed. The completion will contain both…
Amplitude map showing five D2 and two appraisal wells Ebok-5 Ebok-5 will target The West Fault Block accumulation Ebok-1 Ebok-4 Ebok-2 Platform Ebok-7 will target the upside D2 sand Ebok-6 Ebok-6 targets the amplitude…
6) Ebok drilling operations 1
Typical well trajectory Ebok drilling operations 2
Ebok wells / typical completions 1 No. Description Depth ft Depth Max ID in MD TVD OD in 2 1 4-1/2 12.75ppf 13 Cr 85 Tubing 0 4.938 3.958 30 2 Equalizing SCSSV (Tubing Retrievable) 321 321 7.125 3.812 3 4-1/2 Gas-lift Mandrels…
Typical days depth curve Ebok D2 H-1 Horizontal Well 0 Drive 30 1000 Batch drilling should Drill 16 Hole reduce this timeline 2000 3000 Depth (ft) Run & Cement 13 3/8 Casing. N/U & Test BOP 4000 Drill 12 1/4 Hole…
7) Platforms and Facilities 1
Ebok field operations summary of current work Phase 1 well planning defined FPSO status - two main contenders have submitted bids. Currently under review Wellhead platform options have been identified MOPU/FSO development solution…
Ebok development Phase 1 Development criteria Water depth 140 ft Initial production early 2010 Minimum oil rate of 20,000 BOPD Minimum water rate of 20,000 BWPD Gas lift on initial completion Water injection on initial…
Ebok Phase 1 development - facilities FPSOs /MOPU Several proposals have been evaluated to date for FPSOs / MOPUs / FSOs MOPU and FSO appears to be the most appropriate Wellhead support structures Multiple wellhead platforms are…
Refurbished wellhead platform clear advantages Cost efficiencies Speed Higher specification than a new-build Fit for purpose Platforms and facilities 7
Advantages of a MOPU vs FPSO Flexible drilling schedule Does not require a lift barge Immediate access to produced fluid from wellhead Savings on well support structure Savings on flowlines Easier & more cost effective to expand…
Ebok field development - MOPU / FSO option Platforms and facilities 9
Ebok field development. MOPU - FSO option Key features of MOPU for Ebok Platforms and facilities 10
Ebok field development - MOPU / FSO option Storage capacity 1,300,000 bbl Spread Moored DPR approved Fiscal metering unit Helideck Tank heating (if required) Accommodation 32 persons Delivery time 8 months Platforms and…
Ebok field development - MOPU / FSO option Wellhead Support Structure. Eliminates the need for a WHP Platforms and facilities 12
Ebok field development - MOPU / FSO option Wellhead Support Structure Platforms and facilities 13
Ebok field development - MOPU / FSO option Wellhead Support Structure WSS Platforms and facilities 14
Gas solution Low GOR oil: D1 70scf/stb D2 315scf/stb Requirements for gas Gas lift gas for all producing wells - estimated per well requirement 3mmscfg/d Fuel gas requirement for FPSO power generation Ebok-4 has been T&Ad with…
8) EHSS
Afrens corporate commitments EHSS Environment, Health, Safety and Social Afren strives to meet the key goals of - protecting people - protecting the environment - fulfilling social commitments We have a commitment to set and…
Afren Nigeria and the Ebok project Afren Nigeria has its own EHSS Management System implemented with support from a fully established EHSS team Experience gained on Okoro is valuable for Ebok development Local partner experience…
Management of Ebok EHSS CONCEPT Risk assessment (HAZID) ONGOING COMMUNITY AND SECURITY PROGRAMMES DETAILED DESIGN Safety studies, EIA, SIA, facility and contractor selection ENGINEER PROCURE Supervision, monitoring…
Security overview Successful security management requires Security Risk - Proactive community programme Screening - Robust security arrangements in place Threat assessment and risk screening undertaken Field security plan based…
Community affairs overview Afren community affairs vision To contribute towards making a significant and lasting impact on wealth creation and sustainable livelihood in our host communities In practice this means A…
Community engagement Understanding our community Effiat Island community, Mbo LGA (population 10,000) Conducted Socio-economic baseline study as part of EIA June 08 Concluded in April 09 - detail socio-economics community needs…
Community development and employment Community development Scholarships (secondary and tertiary education) Primary education provision of teaching materials Construction of teachers quarters for seven teachers (including families)…
9) Conclusions
Total project first oil early 2010 Task Name Jun 09 Jul 09 Aug 09 Sep 09 Oct 09 Nov 09 Dec 09 Jan 10 Feb 10 Mar 10 Apr 10 May 10 Jun 10 Jul 10 Aug 10 Sep 10 Oct 10 Nov 10 Dec 10 DPR approvals FDP submission EIA Bluebook…