Isle of Man Petroleum Geology. Prospectivity and Future - PowerPoint PPT Presentation

Isle of Man Petroleum Geology. Prospectivity and Future Opportunities Stavros Arsenikos 1 , Dave Roberts 2 , Darren Jones 1 , Ken Milne 2 , Ian Andrews 1 1 British Geological Survey, UK 2 Department of Economic Development, Isle of Man

Overview of the Isle of Man • British crown dependency Territorial Seas up to the 12 mile limit • (approx. 2.5k square miles of sea bed) Ownership of all minerals and • hydrocarbons located within Manx territory is vested in the Isle of Man Government

Overview of the Isle of Man Our Aims : Rejuvenate and promote exploration of hydrocarbons in Island waters Provide fiscal framework which recognises the issues faced by the explorers and anticipate arrangements which are fair to both the extractor and the owner

Regional Setting

Available Dataset • More than 400 2D seismic profiles cutting across Isle of Man territorial seas

Available Dataset • More than 400 2D seismic profiles cutting across Isle of Man territorial seas • Publicly available reprocessed seismic profiles as part of the OGA Government Survey initiative.

Available Dataset • More than 400 2D seismic profiles cutting across Isle of Man territorial seas • Publicly available reprocessed seismic profiles as part of the OGA Government Survey initiative. 3 Wells in Isle of Man • Territorial Seas, more than 200 in proximity, in the East Irish Sea Basin.

Regional Structures • Caledonian trends Devono- • Carboniferous extension Variscan reactivation • • Triassic Extension Jurassic • (Cimmerian)Uplfit • Jurassic Rift Tertiary uplift and • erosion Inherited structural grain trending NE-SW and NW/SE

Petroleum System Seal – Triassic Mercia Mudstone Group Reservoir – Triassic Ormskirk Sandstone Seal – Permian St Bees Evaporites Reservoir - Permian Collyhurst Sandstone Source rock – Namurian basinal shales

Petroleum System Reservoir Triassic Sherwood • Sandstone Group in places too shallow, water-bearing Permian Collyhurst • Sandstone variable reservoir properties

Petroleum System Seal Triassic Mercia • Mudstone – regional seal ? Permian St Bees • Evaporite

Petroleum System Source Rock Namurian Basinal • Facies Initial geometry and distribution After Floodpage et al. 2001

Well Correlation 1 3 2 3 1 2

Prospect analysis in the Lagman Basin

Prospect analysis in the Lagman Basin The biggest challenge BP faced back in 1995 : low permeability values

Prospect analysis in the Lagman Basin What if ….? The well wasn’t drilled in the downthrown part but instead on the footwall (BP’s Prospect A) ? Then… The permeability of the Collyhurst sandstone would be better  updip  T he fault damage zone wouldn’t affect the formation (diagenetic effects) The GWC zone would be deeper, thus adding more volume to the  reservoir and better porosity/permeability values

Prospect analysis in the Lagman Basin Discovery ‘D’ Prospect Model ‘A’ P50 90 BCF P50 120 BCF

FISCAL REGIME OF THE ISLE OF MAN

FISCAL REGIME OF THE ISLE OF MAN • Fiscal Arrangements to be determined Acreage Rental from £15/km 2 • No restrictions on purchase of land and property • Double tax treaty with the UK •

The 2 nd Offshore Licensing Round of the Isle of Man will coincide with the 30 th Offshore Licensing Round in the UK

Thank you Any questions? Come and visit us at our booth Stand #38