UNECE Ad Hoc Group of Experts on Harmonization of Fossil Energy and Mineral Resources Terminology, 5th Session

Transcription

1 UNECE Ad Hoc Group of Experts on Harmonization of Fossil Energy and Mineral Resources Terminology, 5th Session Applying the UNFC Classifications on the producing German oil field Mittelplate A case study UNECE Ad Hoc Group of Experts on Harmonization of Fossil Energy and Mineral Resources Terminology Fifth Session, April 2008 Martin Hubbig, Dr. Curt-Albert Schwietzer, RWE Dea AG, Hamburg Geneve, April 15th 16th, 2008

2 Overview Objective Introduction General Information on Mittelplate oilfield Infrastructure Reservoir Development Mittelplate reserves evaluation RWE Dea system (comparable to SPE) UN system Workout variations in categories (no consideration of volumes) Conclusion RWE Dea 2

3 Objective is to apply the new UNFC-System on an existing reservoir and to check, if (in this particular case Mittelplate ) the system is applicable the system is compatible with the RWE Dea/PRMS-System the system generates new reserves or if existing accumulations are excluded is not to compare volumes or quantities of the outcome of UNFC- System with RWE Dea/PRMS-System RWE Dea 3

4 Introduction The importance of the Mittelplate field for Germanys Oil Reserves Reserves Production ,9 Mio t Germany 3,4 Mio t 63% 62% 23,1 Mio t Mittelplate 2,1 Mio t RWE Dea 4

5 Introcuction Mittelplate Joint Venture BASF 100% 100% 50% Operator Field Development Mittelplate/Dieksand Joint Venture 50% RWE Dea 5

6 Introduction Mittelplate Island Artificial Island Mittelplate A RWE Dea 6

7 Introduction Location Map North Sea North Sea MITTELPLATE BR UNS BÜ TTE L Heide / Heide RWE Dea: 100% NL Ger many HAMBURG Heide / Büsum RWE De a (Op): 50% Wintershall 50% Heide Mittelplate Dieksand Cuxhaven RWE Dea (Op): 50% Ga s de Fra nce 50 % CUXHAVEN WILLHELMSHAVEN BREMERHAVEN 20 km RWE Dea 7

8 Oilfield Mittelplate Geological Cross Section (W-E) Mittelplate Dieksand Dogger Epsilon, Delta, Gamma (ca mtvd, PI: m³/d/bar) Dogger Beta (ca mtvd, PI:1,5-2,5 m³/d/bar) RWE Dea 8

9 Oilfield Mittelplate Geological Cross Section (W-E) - details RWE Dea 9

10 RWE Dea Resource Classification System TOTAL PETROLEUM-INITIALLY-IN-PLACE DISCOVERED PETROLEUM-INITIALLY-IN- PLACE COMMERCIAL SUB-COMMERCIAL UNDISCOVERED PETROLEUM- INITIALLY-IN- PLACE PROVED PRODUCTION RESERVES PROVED plus PROBABLE CONTINGENT RESOURCES PROVED plus PROBABLE plus POSSIBLE LOW ESTIMATE BEST ESTIMATE HIGH ESTIMATE UNRECOVERABLE PROSPECTIVE RESOURCES LOW ESTIMATE BEST ESTIMATE HIGH ESTIMATE UNRECOVERABLE PROJECT STATUS On Production Approved for Development Justified for Development Development Pending Development on Hold Prospect Lead C1 C2 C3 S1 S2 E1 E2 HIGHER RISK PROJECT MATURITY LOWER RISK RANGE OF UNCERTAINTY RWE Dea 10

11 Alternative System RWE Dea 11

12 UNFC Classification E axis = Economic and commercial viability E1 economic E2 potentially economic E3 instrinsically economic F axis = Field project status and feasibility F1 justified F2 contingent F3 undefined G axis = Geological knowledge G1 reasonably assured G2 estimated G3 inferred G4 - potential RWE Dea 12

13 Aligning PRMS-UNFC Classification Matrices* *Source: Mapping of the UNFC to the SPE PRMS, John Etherington, presented to AHGE, Fourth Session, October 2007, Geneva RWE Dea 13

14 Proposed UNFC E-Axis Definitions RWE Dea 14

15 Proposed UNFC F-Axis Definitions RWE Dea 15

16 Proposed UNFC G-Axis Definitions RWE Dea 16

17 Mittelplate Dogger epsilon E F G SPE Status C1 P90 P50 P10 E1.1 F G1 G2 G3 112 C1 On Production S1 P90 P50 P10 E2.1 F2.2 G1 G2 G3 222 S1 Dev. Pending S2 P90 P50 P10 E2.2 F2.4 G1 G2 G3 222 S2 Dev. On Hold RWE Dea 17 Links to E F G

18 Mittelplate Dogger delta E F G SPE Status C1 P90 P50 P10 E1.1 F G1 G2 G3 112 C1 On Production C3 C+D North P90 P50 P10 E2.1 F2.1 G1 G2 G3 222 C3 Just. f. Dev. S2 A+B P90 P50 P10 E2.2 F2.3 G1 G2 G3 222 S2 Dev. On Hold RWE Dea 18 Links to E F G

19 Mittelplate Dogger gamma E F G SPE Status C1 North P90 P50 P10 E1.1 F G1 G2 G3 112 C1 On Production C3 P90 P50 P10 E1.1 F2.1 G1 G2 G3 122 C3 Just. f. Dev. S2 P90 P50 P10 E2.2 F2.3 G1 G2 G3 222 S2 Dev. on Hold RWE Dea 19 Links to E F G

20 Mittelplate Dogger beta E F G SPE Status C1 Central P90 P50 P10 E1.1 F G1 G2 G3 112 C1 On Production C1 North P90 P50 P10 E1.1 F G1 G2 G3 112 C1 On Production C1 West P90 P50 P10 E1.1 F G1 G2 G3 112 C1 On Production C2 South P90 P50 P10 E1.1 F1.2.2 G1 G2 G3 112 C2 Appr. f. Dev. C2 UP & Middle P90 P50 P10 E1.1 F1.2.2 G1 G2 G3 112 C2 Appr. f. Dev. C3 South P90 P50 P10 E1.1 F1.3.2 G1 G2 G3 112 C3 Just. f. Dev. S1 North P90 P50 P10 E1.2 F2.1 G1 G2 G3 122 S1 Dev. Pending S2 South P90 P50 P10 E1.1 F2.2 G1 G2 G3 122 S2 Dev. On Hold S2 North P90 P50 P10 E2.2 F2.4 G1 G2 G3 222 S2 Dev. On Hold RWE Dea 20 Links to E F G

21 Mittelplate Wealden E F G SPE Status C3 P90 P50 P10 E1.1 F1.3.2 G1 G2 G3 112 C3 Just. f. Dev. RWE Dea 21 Links to E F G

22 Heide Chalk E F G SPE Weddingstedt P90 P50 P10 E3.3 F2.4 G1 G2 G Hemmingstedt P90 P50 P10 E3.3 F2.4 G1 G2 G Core Material from Heide Chalk RWE Dea 22 Links to E F G

23 Mining of Oil sands in Heide RWE Dea 23

24 Oilfield Mittelplate Geological Cross Section (W-E) - details E F G SPE E1 P90 P50 P10 E3.3 F3.4 G4.1 G4.2 G E1 Prospect Oil in Chalk Oil in Caprock E F G SPE E1 P90 P50 P10 E3.2 F3.1 G4.1 G4.2 G E1 Prospect RWE Dea 24 Links to E F G

25 Conclusions If a proper classification based on SPE PRMS is available, transforming the results into the UNFC-System is possible without much effort Different Reserves status in SPE PRMS not discriminated by 3-digit UN code information loss e.g. in beta by using 3-digit UN code Using subclasses, UNFC has more breakdowns, classification can be done more exactly e.g. Contingent Resources (S2) in beta not distinguished in SPE PRMS but have different categories in UNFC UNFC covers accumulations which are not considered in SPE PRMS Heide Chalk not accounted in SPE PRMS but in UNFC Generally spoken, reserves remain reserves and resources remain resources Except the additional accumulation, volumes seem not be affected and therefore are similar in both systems RWE Dea 25

26 Applying the UNFC Classifications on the producing German oil field Mittelplate A case study Thank you for your attention! RWE Dea 26

27 PRMS-UNFC Detailed Mapping* *Source: Mapping of the UNFC to the SPE PRMS, John Etherington, presented to AHGE, Fourth Session, October 2007, Geneva RWE Dea 27

28 UNFC Codification for Developed and Undeveloped Reserves F-Axis Sub-Codes *Source: Mapping of the UNFC to the SPE PRMS, John Etherington, presented to AHGE, Fourth Session, October 2007, Geneva RWE Dea 28

29 RWE Dea 29

30 Overview RWE Dea 30

31 Oilfield Mittelplate Geological Cross Section (W-E) - details RWE Dea 31

32 Field Development Concept Mittelplate Island Development of Dogger Beta Sandstone downdip 44 slots available 13 producers/5 injectors (beta, gamma, delta, epsilon) additional wells planned up to 7,000 m MD current production 3,200 t/d Dieksand Land Location Development of updip sandstones with ERD wells up to 10,000 m MD 6 wells under production as of April 2005 (1 w/o) current production 3,400 t/d RWE Dea 32

33 Mittelplate A18 Completion (Delta/Epsilon) RWE Dea 33

34 Dieksand 8 Casing Design RWE Dea 34

35 Capacity of Drilling Rig Rig m 2000m T-345 ca.3300m T-345, upgrade max. 6000m Rig 2003 Rig Replacement will Provide Better Conditions for Drilling & Access Additional Reserves/Resources Allows Future Rig Upgrading and Application of New Techniques RWE Dea 35

36 Field Development Mittelplate Profile Dieksand 8 RWE Dea 36

37 Field Development Mittelplate Profile Dieksand 8 RWE Dea 37

38 Reservoir Dogger Beta Schlagkreis neue Bohranlage 6 km Schlagkreis alte Bohranlage Pilotprojekt Ölführung Dogger Beta RWE Dea 38

39 Artificial Island Mittelplate RWE Dea 39

40 Artificial Island Mittelplate RWE Dea 40

41 Mittelplate/Dieksand Reservoir Parameters Dogger beta Dogger gamma Porosity: % Porosity: % Permeability: md Permeability: md Net-Pay 5-17 m Net-Pay m Depth (TVDSS): m Depth (TVDSS): m OOIP: 55 Mio t OOIP: 8 Mio t Dogger delta Dogger epsilon Porosity: % Porosity: % Permeability: md Permeability: md Net-Pay m Net-Pay m Depth (TVDSS): m Depth (TVDSS): m OOIP: 26 Mio t OOIP: 14 Mio t RWE Dea 41

42 Top 20 Extended Reach Wells Horizontale Mess Vertikal Platz Abweichung Teufe Teufe Auftraggeber Bohrung Feld Lokation [m] [m] [m] BP M-16Z Wytch Farm UK Land TotalFinaElf CN-1 Ara Argentinien BP M-11Y Wytch Farm UK Land BP M-14 Wytch Farm UK Land RWE Dea Dieksand 6 Mittelplate Deutschland Woodside GWA-18 Goodwyn Australien TotalFinaElf CS-1 Kaus Argentinien RWE Dea Dieksand 5 Mittelplate Deutschland ConocoPhillips 24-3 A-14 Xijiang China BP M-5 Wytch Farm UK Land TotalFinaElf AS-3 Ara Argentinien BP M-15 Wytch Farm UK Land Norsk Hydro 30/6-C-26A Oseberg Norwegen RWE Dea Dieksand 8 Mittelplate Deutschland TotalFinaElf CS-2 Kaus Argentinien BP M-9Z Wytch Farm UK Land Maersk MFF-19C Dan Dänemark RWE Dea Dieksand 4 Mittelplate Deutschland ConocoPhillips 24-3 A-17 Xijiang China ConocoPhillips 24-3 A-18 st3 Xijiang China RWE Dea Dieksand 7 Mittelplate Deutschland RWE Dea Dieksand 3 Mittelplate Deutschland RWE Dea Dieksand 2 Mittelplate Deutschland RWE Dea 42