Sunda Energy PLC · LSE:SNDA
Sunda Energy — 3rd Timor-Leste Energy Summit (virtual conference) March 2021
14 slides from Sunda Energy's conference presentation, Mar 25, 2021
Slide 1: Unlocking the Potential of the Chuditch Gas Discovery, Offshore Timor-Leste
Unlocking the Potential of the Chuditch Gas Discovery, Offshore Timor-Leste Colin Murray, VP Technical, SundaGas 25 March 2021 www.sundagas.com
Slide 2: Timor-Leste TL-SO-19-16 PSC: Major Discovered Gas with Upside
Timor-Leste TL-SO-19-16 PSC: Major Discovered Gas with Upside ▪ SundaGas is a Singapore-based E&P company with interests and experience across SE Asia ▪ TL-SO-19-16 PSC signed on 8 November 2019 and was the first new PSC offshore Timor-Leste following the new Maritime Boundary Agreement in August 20
Slide 3: Structural Elements and Stratigraphy
Structural Elements and Stratigraphy Seal Highly condensed section Base Darwin Valanginian UC Source and Seal Top Plover Chuditch Reservoir and Source Chuditch Reservoir Modified from Cadman and Temple 2004 and Geoscience Australia Publications 3
Slide 4: Central North Sea and North Bonaparte Basin Comparison
Central North Sea and North Bonaparte Basin Comparison The TL-SO-19-16 PSC block is 3,571 km2 in area, equivalent to ~18 full size UK North Sea blocks or more than half a UK quadrant Sunrise Chuditch Triassic Petroleum Plays of the North Sea – Morris and England 2018, GeoExpro Regional Darwin TWT ma
Slide 5: Regional Darwin Structure
ee | BD By SundaGas Regional Darwin Structure co Baa,
Slide 6: Chuditch – Malita Graben Regional Composite Seismic Tie
Chuditch – Malita Graben Regional Composite Seismic Tie NW Sikatan-1 TL-SO-19-16 Chuditch-1 Malita Graben SE A A’ Plio - Pleistocene Oliver Hibernia Johnson Wangarlu Top Plover Darwin Upper Jurassic source rocks in A expanded section Middle Jurassic reservoirs and gas- prone source rocks Chuditch id
Slide 7: Chuditch Ideally Located for Significant Gas Charge
Chuditch Ideally Located for Significant Gas Charge ▪ Modelled migration pathways illustrate charge of Chuditch Field and Prospects from the adjacent Malita Graben and spill to the Sunrise-Troubadour Area Notes ▪ 2D mapping extrapolated beyond mapped limits ▪ Simple depth conversion used time/depth
Slide 8: The Chuditch-1 Discovery: Highlights
The Chuditch-1 Discovery : Highlights Chuditch SE NW ▪ Chuditch discovery drilled by Shell in 1998 ➢ 65m water depth, TD 3035m, drilled in 13 days Seabed channel obscures seismic ➢ >25m gas encountered, mapped column ~160m Hibernia signal ➢ Good quality Jurassic Plover Formation reservoir Top Cretac
Slide 9: Chuditch Area – Seismic Mapping
Chuditch Area – Seismic Mapping A A’ A Seabed channel obscures seismic signal A’ Distorted seismic image around fault produces uncertainty in mapping reservoir and gas zones Seabed Bathymetry Map Darwin TWT Map 2D seismic line ▪ Chuditch is a long narrow field set up by a key fault, with large low r
Slide 10: Geological Reason for Seabed Anomalies
Geological Reason for Seabed Anomalies Chuditch Area 18,000 Years BP 16,000 Years BP Regional Seabed (Present Day) ▪ During the last ice age, sea levels were up to 120m lower than today ▪ The Bonaparte Shelf was a land area with a large brackish lake occupying the central depression. ▪ Chuditch lay
Slide 11: Solution – PSDM Seismic Reprocessing to provide accurate depth image
Solution – PSDM Seismic Reprocessing to provide accurate depth image Indonesia Case Study Time Domain Depth migration will move the image point to the correct subsurface position in XYZ space provided the correct velocity model V(x,y,z) is used Depth Domain This is a time-consuming process as many i
Slide 12: Prospectivity Summary and Forward Plans
Prospectivity Summary and Forward Plans ▪ Exciting potential is seen in the Chuditch gas discovery and Initial Top Plover Depth form map adjacent exploration prospects Chuditch Chuditch ✓ Good quality Jurassic Plover Fm reservoir ubiquitous North NE ✓ Located adjacent to large prolific source kitche
Slide 13: Summary of 3D Seismic PSDM Processing Plan
Summary of 3D Seismic PSDM Processing Plan 2D seismic data ▪ Kyranis 3D was acquired in 2012 and covers 9,023 km2 and lies mostly in Australian waters but also covers southern Timor-Leste waters including Chuditch Area of 3D to be reprocessed within ▪ SundaGas has selected a technically preferred ar
Slide 14: TL-SO-19-16 PSC: Summary
TL-SO-19-16 PSC: Summary ▪ SundaGas sees exciting potential in the Chuditch gas discovery and its adjacent exploration features ▪ 3D seismic reprocessing work about to commence to address the key technical issue of subsurface imaging ▪ Drilling planned for 2023 following successful completion of sei
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