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PESA SA/NT Technical Luncheon, Thursday 30th August: Seismic analysis of focused fluid flow in the North West Shelf and Great Australian Bight

Thursday, August 30 @ 12:00 - 14:00

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Guest Speaker: Tayallen Velayatham

Tayallen Velayatham completed his BSc in Geology and Geophysics at the University of Adelaide in 2007. Following graduation, he worked for PETRONAS Carigali, the Malaysian national oil company, as a field operations geoscientist from 2008 to 2013, designing and managing seismic surveys. He then worked as a quantitative interpretation geophysicist, executing seismic inversion projects, from 2014 to 2015. In wanting to broaden his knowledge and skillsets, he started his PhD in Petroleum Geology at Adelaide University’s School of Petroleum in 2016, where he is currently researching focused fluid flows in offshore sedimentary basins of Australia

PESA SA/NT August Technical Luncheon

Seismic analysis of focused fluid flow in the North West Shelf and Great Australian Bight

When: Thursday 30th August, 12pm for 12:30

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

Speaker: Tayallen Velayatham, Australian School of Petroleum, University of Adelaide

Focused fluid flows in sedimentary basins are common yet complex expressions of subsurface fluid dynamics that are driven by sediment compaction, hydrocarbon buoyancy and/or differential pressure. Fluids migrate from deeper to shallower depths by means of hydraulic fracturing or via permeable geological and stratigraphic pathways such as faults, fractures, buried channels and along igneous intrusions. Whilst studies of focused fluid flows are common in environmental, biological and geohazard-related assessments, their analysis can play a critical role in hydrocarbon exploration, particularly when assessing the petroleum systems of a target basin. Hydrocarbon-related fluid flow can provide information on the presence of mature sources rocks, fluid migration pathways, underlying reservoirs and seal permeability and bypass. The ability to obtain insights into petroleum systems from focused fluid flow is especially invaluable in frontier exploration basins, where 3D seismic surveys are often the only available data.

Focused fluid flow events have been identified in basins across Australia, though there has been relatively little research into their genesis. In this study, focused fluid flows in seismic data from the Northern Carnarvon Basin of the North West Shelf and the Ceduna Sub-Basin of the Great Australian Bight are documented. Extraordinarily long (>70 km) linear trends of ancient and buried paleo-pockmarks within the Triassic and Jurassic sequences of the Exmouth Plateau are investigated and a model that links their genesis to ancient focused fluid flow events is proposed. In addition, more geologically recent fluid escape features have been documented in the Ceduna Sub-Basin. Their possible links to migration pathways and source rocks are investigated, and the potential implications for exploration in this frontier basin are discussed.

Tayallen Velayatham completed his BSc in Geology and Geophysics at the University of Adelaide in 2007. Following graduation, he worked for PETRONAS Carigali, the Malaysian national oil company, as a field operations geoscientist from 2008 to 2013, designing and managing seismic surveys. He then worked as a quantitative interpretation geophysicist, executing seismic inversion projects, from 2014 to 2015. In wanting to broaden his knowledge and skillsets, he started his PhD in Petroleum Geology at Adelaide University’s School of Petroleum in 2016, where he is currently researching focused fluid flows in offshore sedimentary basins of Australia.

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 27th August 

Details

Date:
Thursday, August 30
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