The Ruru discovery. New Zealand Petroleum Conference Roland Swift Ruru Technical Lead. NZ Petroleum Conference 2017

Size: px

Start display at page:

Download "The Ruru discovery. New Zealand Petroleum Conference Roland Swift Ruru Technical Lead. NZ Petroleum Conference 2017"

Abraham Wiggins
5 years ago
Views:

1 The Ruru discovery New Zealand Petroleum Conference 2017 Roland Swift Ruru Technical Lead NZ Petroleum Conference 2017 March

The Ruru discovery 1. Introduction 2. 2013-2014 Operations 3. Results 4.

2 The Ruru discovery 1. Introduction Operations 3. Results 4. Summary and implications for exploration around Maui Image courtesy of Wildbase Hospital NZ Petroleum Conference 2017 March

Maui timeline Seeps 1866 first oil discovery

seismic surveys 1969 Maui discovere d 2005-

1969 1970 1970 Maui- 02 & Maui- 03 Appraisal

1978 1976 1974 1973 1986 Maui-5 & Maui-6

installed 1974 fabrication contracts awarded

Paper 1991 3D seismic survey shot 1992 Maui

1993 1996 1996 1998 2002 2006 2014 1993-1999

starts from Maui B 1993 Oil discovered at

Exploration Well drilled 1998 Maui- South-1

survey shot 2006 Present IRF drilling NFE

3 Maui timeline Seeps 1866 first oil discovery in Taranaki 1955 Shell BP Todd formed 1959 Kapuni Discovered 1965 First offshore exploration licence granted seismic surveys 1969 Maui discovere d Early days Maui- 02 & Maui- 03 Appraisal wells drilled 1979 First gas Maui-5 & Maui-6 appraisal wells drilled Development wells drilled 1978 Maui A platform complete 1976 Maui A platform tower installed 1974 fabrication contracts awarded 1973 agreement over gas sales and Maui White Paper D seismic survey shot 1992 Maui B platform installed Maui B development wells 1993 Production starts from Maui B 1993 Oil discovered at Maui B 1996 Oil production starts 1996 Rahi Exploration Well drilled 1998 Maui- South-1 exploration well drilled D seismic survey shot 2006 Present IRF drilling NFE project 2014 Ruru-03 exploration well drilled HC discovery NZ Petroleum Conference 2017 March

4 Setting Regional Top Basement 3D grid Maui Tui Maui Ruru Ruru Maari NZ Petroleum Conference 2017 March

Maui stratigraphy and Ruru targets Moki A Moki B Moki B3.1 Moki B3.2 Moki B5 Moki B7 Turbidite sheet and channel sands of the Moki Fm. One small gas column in the Maui Field area (Kotimana Gas Cap).

5 Maui stratigraphy and Ruru targets Moki A Moki B Moki B3.1 Moki B3.2 Moki B5 Moki B7 Turbidite sheet and channel sands of the Moki Fm. One small gas column in the Maui Field area (Kotimana Gas Cap). Maari oil field reservoir. Shallow marine sands of the Kapuni Group C sands, main Maui gas reservoir. Shallow marine sands of the Kapuni Group D sands, Maui oil and gas reservoir. Shallow marine sands of the Kapuni Group F sands, Maui oil reservoir. Tui oil field reservoir. Cretaceous coals main source rocks for Maui, none present under Maui but predicted to be present under Ruru. March

6 Maui Ruru Ruru prospect cartoon Pre-drill Moki C sands Moki C sands Cretaceou s Kitchen 6

7 Ruru seismic section Pre-Drill NW Moki B Cape Egmont Fault Zone SE Base Plio. Unc. C sand D sand Moki A F sand Basement Moki B Otaraoa C sand D sand F sand NZ Petroleum Conference 2017 March

8 Primary targets Secondary targets Predicted Actual GR Ruru-01A Summary Drilled to ~3350m TVDSS in 2011 Good HC shows with gas C1-C5 and some fluorescence source proved Moki A evaluation shows possible palaeo contact with low saturations above the contact, possibly oil TD - ~20m above Moki B and 460m above first primary target Kapuni Group C sands Drill ship blown off location by 100 year storm, well safely P&A Moki A Moki B C D F NZ Petroleum Conference 2017 March

9 The Ruru discovery 1. Introduction Operations 3. Results 4. Summary and implications for exploration around Maui NZ Petroleum Conference 2017 March

10 Ruru Operations Summary Ruru drilled with the Kan-Tan IV semi sub rig operated by Frigstad Campaign ran from September 2013 to January 2014 (140 days) Poor weather was a challenge i.e. issues landing casing (rig heave) and running the BOP (poor visibility) Well Ruru-02 Ruru-02A TD depth Days Result Side-tracked due to issues running casing P&A due to wellhead tilt Ruru m 59days HC discoveries in Moki B and C sands, C sands wireline logs and MDT Ruru-03A Success case side track - Appraisal of Moki B, Moki NZ Petroleum Conference 2017 B wireline logs and MDT March

MOC. One RAM3B incident: draw works brake failure Goal Zero - No harm to people or the environment - Achieved over 140 day campaign Ruru

11 KanTan IV Ruru Campaign: HSSE Summary Relentless focus on safety as the top priority working with Frigstad the rig operator For short campaign, focused on two themes: DROPS & Barrier Ownership Gradually drove improvements in areas such as lifting and hoisting, hands-free, MOC. One RAM3B incident: draw works brake failure Goal Zero - No harm to people or the environment - Achieved over 140 day campaign Ruru HSE campaign won the 2015 Deloitte Energy Excellence Awards Health and safety initiative of the year award NZ Petroleum Conference 2017 March

12 The Ruru discovery 1. Introduction Operations 3. Results 4. Summary and implications for exploration around Maui NZ Petroleum Conference 2017 March

13 Ruru discovery cartoon Moki A water wet in Ruru-03 and Ruru-03A Ruru-03 Ruru- 03A NZ Petroleum Conference 2017 March

14 Ruru discovery cartoon Over 100m of oil bearing sand in Moki B Ruru-03 Ruru- 03A NZ Petroleum Conference 2017 March

15 Ruru discovery cartoon Small gas condensate column in the C sands Wireline and MDT Ruru-03 Ruru- 03A NZ Petroleum Conference 2017 March

16 Ruru discovery cartoon No high HC saturations in D or F, lots of shows in deeper section Ruru-03 Ruru- 03A NZ Petroleum Conference 2017 March

17 Ruru discovery cartoon Small oil column in Moki B with different contact Wireline and MDT Ruru-03 Ruru- 03A NZ Petroleum Conference 2017 March

18 Ruru-03 C sand Permeabilities between 10 to 600 md NZ Petroleum Conference 2017 MDT Points 18

19 Ruru-03A Moki B Low perms in line with pre-drill expectations Average Perm between 0.1 to 10 md - Key uncertainty NZ Petroleum Conference 2017 MDT Points 19

20 Post well sample studies Isotube gas sample analysis Isotech & GNS PVT Corelabs Geochemical fingerprinting GNS Moki and C sands Petrography GNS TD Biostrat GNS Vitrinite Reflectance Newman Energy NZ Petroleum Conference 2017 March

21 The Ruru discovery 1. Introduction Operations 3. Results 4. Summary and implications for exploration around Maui NZ Petroleum Conference 2017 March

Implications for prospectivity in the greater Maui area The CEFZ didn t seal sufficiently to retain significant HC columns at Kapuni Group in Ruru, other prospects that rely on the CEFZ for fault

22 Implications for prospectivity in the greater Maui area The CEFZ didn t seal sufficiently to retain significant HC columns at Kapuni Group in Ruru, other prospects that rely on the CEFZ for fault seal are higher risk Confirmed both oil and gas-condensate generation and expulsion in Ruru kitchen area - areas updip of the Ruru kitchen will have a high chance of charge Confirmed that shallow marine Kapuni Group reservoirs around Maui are able withstand significant burial (ie >4km) Manganui shale capable of holding large (Moki) oil columns when buried deeply but Moki reservoir quality decreases with increasing depth of burial NZ Petroleum Conference 2017 March

the environment Ruru-03 was a discovery that has provided new insights into the petroleum system

23 Summary The Ruru discovery in the Maui PML was the culmination of 10 years of study work and drilling efforts to test the Ruru structure The well was drilled safely with no harm to people or the environment Ruru-03 was a discovery that has provided new insights into the petroleum system and plays around Maui Outstanding performance by NZ contractors NZ Petroleum Conference 2017 March

24 NZ Petroleum Conference 2017 March

Using new facies architecture models and geochemical data constraints to reconstruct Kupe and Kapuni field charge dynamics

Using new facies architecture models and geochemical data constraints to reconstruct Kupe and Kapuni field charge dynamics Karsten Kroeger, Richard Sykes, Malcolm Arnot, Miko Fohrmann, Matt Hill Studying