Exploring the Prolific Rona Ridge West of Shetlands, UKCS
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Mark Pay Spark Exploration Exploring the Prolific Rona Ridge West of Shetlands, UKCS
Transcript of Exploring the Prolific Rona Ridge West of Shetlands, UKCS
Mark Pay
Spark Exploration
Exploring the Prolific Rona Ridge
West of Shetlands, UKCS
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Spark Exploration – A large Footprint on the Rona Ridge
• Spark Exploration is a privately owned company focused on exploring the prolific Rona Ridge, WoS
• Spark has built a > 900 km2 acreage footprint on the prolific Rona Ridge across three licences
• P.2407 & P.2412 (30th Round): Spark 100%
• P.2593 (32nd Round): Spark 50%, Siccar Point 50% (Op.)
• Diverse & attractive portfolio in several plays identified on high quality 3D seismic
• Identified prospectivity has proven analogues and ongoing development activity that provide potential commercial solutions
Clair
Why the Rona Ridge?• Proven world class petroleum system. 10+ billion boe discovered
(Clair, Foinaven/Schiehallion, Lancaster, Edradour/Glendronach)
• Long lasting regional structural high focusses hydrocarbon migration, with multiple proven reservoirs & seals (Devonian, Jurassic & Cretaceous)
• Underexplored, with significant recent discoveries, appraisal and development activity
Tuck & 206/11-1
Appraisal OpportunityCretaceous MacBeth Ssts
Cretaceous MacBeth Sst Play
• Turonian-Cenomanian turbiditic sandstones are present on the flank of the Faroe Shetland Basin, adjacent to the Rona Ridge
• Well 206/11-1 is one of several discoveries. Edradour /Glendronach and the 206/4-1 gas discovery all sit within the same play type, with slightly different aged reservoirs
• These slope fan reservoir sands appear to be point sourced via systems associated with the main NW-SE orientated basement lineaments
• All the discoveries are stratigraphic traps
• Infrastructure potentially available for rapid development
Cretaceous MacBeth Sst Play • 206/11-1: 9m pay with GDT 3,532mTVDss. Hydrate
compromised DST. Max gas flow rate 12.5 MMscf/d. Potential for >40 MMscf/d in a horizontal well
• 205/15-1: 500m downdip encountered 30.5m net reservoir interval at similar level
• Amplitude anomaly indicating better developed sands updip/along strike from 206/11-1 & 205/15-1
Tuck: Macbeth Ssts Amplitude Anomaly
• 205/15-1 MacBeth sandstones appear to brighten updip on all offset volumes indicating better reservoir development
• Package thickens into depocentre in the hanging wall of the Rona Ridge ponding turbiditic fan ssts
206/11-1 Gas discoveryDST max rate 12.5 MMSCFD
gas from 9m net MacBeth Ssts
Lateral pinch-out of reservoir package on
to the Rona Ridge
Macbeth Ssts +/- 15ms far angle RMS amplitude 205/15-1High net:gross (30.5m net)
MacBeth Sst with gas shows
Tuck: Macbeth Ssts Amplitude Anomaly
• 205/15-1 MacBeth sandstones appear to brighten updip on all offset volumes indicating better reservoir development
• Package thickens into depocentre in the hanging wall of the Rona Ridge ponding turbiditic fan ssts
206/11-1 Gas discoveryDST max rate 12.5 MMSCFD
gas from 9m net MacBeth Ssts
Lateral pinch-out of reservoir package on
to the Rona Ridge
Macbeth Ssts +/- 15ms far angle RMS amplitude 205/15-1High net:gross (30.5m net)
MacBeth Sst with gas shows
Tuck Geo-Seismic Section • 205/15-1 MacBeth sandstones appear
to brighten updip on all offset volumes indicating better reservoir development
• Pressure data indicates an intra-formational seal between Tuck and 206/11-1. An appraisal well will test both reservoirs – analogous to the Edradour-Glendronach accumulations
Ginger ProspectDevonian Clair Group
Ginger Prospect Summary
• A large structural-stratigraphic closure of the Clair Group to the south-west of Clair
• Three way dip, one way truncation trap towards the south-west
• The reservoir is absent in 205/20-1. Lateral seal to the south-west provided by impermeable basement and/or basal Clair Group basal conglomerate/lacustrine mud
• Proven topseal provided by Upper Jurassic and Upper Cretaceous shales
Ginger Prospect Regional seismic line to the Clair Field
Ginger Prospect Dip Seismic Section
• A large structural-stratigraphic closure of the Clair Group to the south-west of Clair
• Three way dip, one way truncation trap towards the south-west
• Lower Clair Group clasticsinfilling fault bounded topography on the Lewisian basement
• Proven topseal provided by Upper Jurassic and Upper Cretaceous shales
Cherry ProspectLower Cretaceous Victory Ssts
Cherry Prospect Summary
• Cherry is a Lower Cretaceous Victory Sst stratigraphic trap updip of 205/20-1 where the sands were strongly oil stained
• The Victory reservoir will form an important part of Clair Phase III (SW) following an extensive appraisal campaign in recent years
• Trap created by onlap onto the Kimmeridge Clay Fm on the flank of the Rona Ridge with ~16 km2 of closure
• The Sammy Prospect (mean recoverable 37mmbbls) is a robust 4-way dip structure downdip of Cherry which could be targeted in the same drilling campaign to test the play
