Dersom nok CO 2 og høye oljepriser kan en EOR -dugnad betale for fangst og transport samarbeid med UK og DK? JA, - med samarbeid og felles løft

Transkript

1 Kan lagring av CO2 kombineres med økt utvinning? Rolf Wiborg, Oljedirektoratet Tekna Kursdagene Trondheim 7. januar 2010 Dersom nok CO 2 og høye oljepriser kan en EOR -dugnad betale for fangst og transport samarbeid med UK og DK? JA, - med samarbeid og felles løft

2

3

4 Utfordringer CO 2 - kilder CO 2 - kilder rundt Nordsjøen Mongstad Kårstø Grenland Esbjerg Flere store kullkraftverk Flere rene CO 2 -kilder Ensted

5 Numerous entities and authorities involved in the CO 2 chain - challenges. These elements exists or can be controlled by the companies on NCS. How do we make the red elements attractive to commercial entities? CO 2 capture From power plants flue gas CO 2 transport CO 2 storage From natural gas processing EOR From industrial processes Geological storage

6 ET VANSKELIG PUSLESPILL!!! OD - April 2005 Olje Miljøkrav Kyotokrav Norge/ EU Avtaleverk / Internasjonale regler Gass Økt utvinning NVE- november 2005 Kraftbehov Norge/ Norden/ Europa Kabler overføringsnett Industri Hjem Teknologi utvikling Gassnova Næringsutvikling FoU Jobb Oljeselskap Energiselskap Myndigheter Er målet: - økt oljeutvinning Industrien - økt kraftforsyning Myndigheter - reduserte utslipp NGOer - teknologiutvikling - arbeidsplasser eller alle 5 i ett? SFT- September 2005 Viser at EOR har en relativ lav tiltakskostnad Hele bildet: Bellona og Zero - August 2005 Tel-Tek September 2005

7 CO 2 for EOR Norwegian Continental Shelf Possibilities and Challenges Gunnar Berge, Director General NPD Carbon Capture and Storage where are we today? Felix Conference Center Oslo, 26 April 2005

8 Volume (Mill Sm3 oil) EKOFISK TROLL SNORRE VALHALL ELDFISK HEIDRUN OSEBERG STATFJORD GULLFAKS GRANE OSEBERG SØR BALDER GULLFAKS SØR ÅSGARD BRAGE NJORD DRAUGEN TOR VISUND ULA NORNE VIGDIS OSEBERG ØST TORDIS VESLEFRIKK GYDA FRAM STATFJORD NORD HOD KVITEBJØRN JOTUN EMBLA VARG STATFJORD ØST TAMBAR GLITNE SYGNA MURCHISON TUNE SKIRNE NCS - Around 54 % (average) of the oil left in the ground with present plans and technology! Need IOR/EOR to make more oil producible (CO 2 is one of the possibilities and can give additional recovery after other EOR methods have become inefficient) Produced Reserves Recources remaining in the field after planned shutdown

9 CO 2 and Enhanced Oil Recovery More than 30 years experience onshore. No big offshore fields to learn from. Difficult to transfer experience Geology and fluids are different. Fewer wells drilled in offshore fields NCS big fields have already been subjected to advanced methods to increase recovery so less oil is remaining as a CO 2 target CO 2 -injection may increase recoveries 3-7 % on NCS versus a history of 7-15 % onshore USA.

10 NCS potential for added oil using CO 2 The report has identified 20 fields as candidates for CO 2 -injection, based on reservoir conditions and size The fields vary in geology, development solutions and present production strategies

11 Technical potential The 20 fields have a potential for million Sm 3 extra oil IF enough CO 2 could be made available at the optimum time in their production life at commercial conditions.

12 CO 2 injection and production require extensive modifications in an expensive offshore environment New installations may be needed to get all the equipment onboard. Modifications for our big fields have estimates between 3 to 6 billion NOK: process upgrades corrosion protection additional wells separation plant to meet sales gas and transportation specifications when justified. Limited space and weight capacities on ALL offshore installations

13 Field examples NPD s 2005 report Gullfaks and Ekofisk with CO 2 from Norway Break even-prices for Gullfaks $26-33/bbl GULLFAKSk s Gullfaks Break even-prices for Ekofisk, injecting CO 2 after 2020, $23-33/bbl MONGSTAD Mongstad NB! Highest recent PDO less than $18/bbl KÅRSTØ Kårstø (10 /ton quota price assumed) EKOFISK Ekofisk

14 Added possibilities and challenges Higher quota prices for long term storage of CO 2 could make these projects attractive. Huge uncertainties in estimating added oil volumes. The field examples do not include hook-up to alternate storage. That will be added costs to avoid emissions, bad press and risks to valuable hydrocarbon resources.

15 The 2005 report concluded that challenges remained How to make the red elements commercially attractive? CO 2 capture From power plants flue gas CO 2 transport CO 2 storage From natural gas processing EOR From industrial processes Geological storage

16 NPD s CONCLUSIONS FROM THE 2005 STUDY CO 2 -injection has a large potential for additional oil recovery on NCS. It is technically feasible to implement, but the projects are not commercially viable for the licensees on NCS today. The reasons are: The costs involved in capturing and transporting CO 2 based on available technologies makes other methods more attractive to the licensees, even recognizing that CO 2 would provide additional oil. EOR/CO 2 -projects have large upfront investments. Added income comes after several years and over a long period. The risks in these projects are too many for the licensees to lift them alone. Decisions on long term risky projects normally require break even prices no higher than $22-25/bbl.

17 Studier Snorre Statfjord Gullfaks Mongstad fangst 20 mrd NOK+? OD har kjempet for Johansen nær mange felt med EOR potensial! Johansen

18

19 Danske visjoner UK har lignende Sammen har vi unike muligheter til å lagre en problemgass i trygge deponi og få ekstra inntekter ikke bare ekstra kostnader

20 Ressursrapporten Takk for oppmerksomheten!