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PESA SA/NT Technical Luncheon, Thursday 28th June: Regional Studies of the McArthur Basin

Thursday, June 28 @ 12:00 - 14:00

Guest Speaker: Mattilda Sheridan & Rhodri Johns

Mattilda Sheridan is a Geoscientist working in Regional and New Ventures Exploration at Santos Ltd. Mattilda is currently involved in play based exploration in the Northern Territory, focusing on the McArthur and Amadeus Basins. Prior to this role at Santos, Mattilda has worked as a Sedimentologist and Well Site Geologist. Mattilda obtained a MSc in Geology at the University of Canterbury, New Zealand (2014). Her undergraduate degree was completed at the Australian National University, Canberra and at the University of Leeds, United Kingdom (2012).

Rhodri Johns was born and grew up in Wales (on Devonian and Silurian rocks). He has a BSc (Honours) degree in Geology from Manchester University, and a PhD from Cambridge University. He spent a year and a half in Italy on a Post Doc before starting his career with Shell in The Netherlands. With Shell he worked in Holland and Brunei before joining Sun Oil in London – working on the North Sea and other basins in Europe and Africa. He has been with Santos since 1993 and is currently Exploration Adviser. Rhodri is a Fellow of the Geological Society of London. He is also a member of the AAPG, PESA and SEAPEX.

PESA SA/NT June Technical Luncheon

Regional Studies of the McArthur Basin and the Depositional Setting of the Roper Group, Beetaloo Sub-Basin

When: Thursday 28th June, 12pm for 12:30

Where: Club Braggs at The Public Schools Club, 207 East Terrace, Adelaide SA 5000

Speakers:
Matilda Sheridan & Rhodri Johns Santos Ltd

Santos entered the Beetaloo sub Basin in 2012 following regional studies that helped to better define the extent of the Beetaloo sub-Basin and in particular the extent of the Velkerri and Kyalla organic rich shales. The Mesoproterozoic Velkerri and Kyalla organic rich shales of the Roper Group in the McArthur Basin are identified as possibly one of the most prospective shale gas plays in Australia. The Velkerri and Kyalla shales occur within a thick, predominantly marine, clastic succession within the upper Roper Group of the McArthur Basin in the Northern Territory. Santos has conducted regional studies across the McArthur Basin focussing on the tectonic setting, depositional models and sedimentological/stratigraphic relationships of the Roper Group to better understand the prospectivity and extent of the Velkerri and Kyalla shale gas plays. This review has included the study of open file drill core, well log analysis, seismic interpretation integrated with available potential field data. The studies have provided an insight into the facies relationships across the full spectrum of shallow water to deeper marine deposits and the regional distribution of the main stratal units of the upper Roper Group. The Roper Group succession consists of approximately six major regressive-transgressive (R-T) sequences, each ca 500-1000m thick, deposited in a clastic-dominated marine deltaic setting. This analysis focusses on the three youngest R-T sequences. The regional seismic interpretation reveals an overall southeast thickening of the upper Roper Group succession in the Beetaloo and OT Downs sub-basins, supporting a northward prograding delta depositional model. Well and seismic data indicate that the organic rich shales of the Velkerri and Kyalla formations are laterally continuous, relatively undeformed and thermally mature, classifying them as unconventional reservoirs hosting potentially large volumes of retained hydrocarbon.

Mattilda Sheridan is a Geoscientist working in Regional and New Ventures Exploration at Santos Ltd. Mattilda is currently involved in play based exploration in the Northern Territory, focusing on the McArthur and Amadeus Basins. Prior to this role at Santos, Mattilda has worked as a Sedimentologist and Well Site Geologist. Mattilda obtained a MSc in Geology at the University of Canterbury, New Zealand (2014). Her undergraduate degree was completed at the Australian National University, Canberra and at the University of Leeds, United Kingdom (2012).

Rhodri Johns was born and grew up in Wales (on Devonian and Silurian rocks). He has a BSc (Honours) degree in Geology from Manchester University, and a PhD from Cambridge University. He spent a year and a half in Italy on a Post Doc before starting his career with Shell in The Netherlands. With Shell he worked in Holland and Brunei before joining Sun Oil in London – working on the North Sea and other basins in Europe and Africa. He has been with Santos since 1993 and is currently Exploration Adviser. Rhodri is a Fellow of the Geological Society of London. He is also a member of the AAPG, PESA and SEAPEX.

In addition to lunch, Club Bragg’s great range of drinks will be on offer:

Coopers – pale ale, sparkling ale, stout, mid strength and light.
Goodiesons – brown ale, pilsner, malboc, wheat, stout, red ale, pale ale
West End – Draught
Kersbrook Hills – Cider
House wine: GMH Shiraz and 90 mile Sav Blanc

Please note that bookings will close at 5pm on Monday 25th June

Details

Date:
Thursday, June 28
Time:
12:00 - 14:00

Venue

Club Bragg’s at the Public Schools Club
207 East Terrace, Adelaide, South Australia 5000 Australia
Phone:
82233213
Website:
http://www.publicschoolsclub.com.au/

Registration Details

PESA Members please login for member pricing on tickets for this event.

Ticket Type Name Price Quantity
PESA Member

$50.00
Non-Member

$60.00
PESA Student Member

$20.00