PESA SA/NT Technical Luncheon, Thursday 24th June – Strike Energy: West Erregulla Update & PESA Prize Winner: Brittany McDermott
Thursday, 24 June @ 12:00 pm - 2:00 pm (Australia/Adelaide time)$20 – $70
PESA SA/NT June Technical Luncheon
When: Thursday 24th June, 12pm for 12:30
Where: Ayers House, 288 North Tce, Adelaide
Speakers: Andrew Farley (Strike Energy) & Brittany McDermott (PESA Prize Winner)
This months luncheon has a double-bill
TOPIC: West Erregulla Update
Andrew will give us an update on West Erregulla and their recent drilling.
Brittany McDermott – PESA prize winner
ABSTRACT: Characterisation of Submarine Slides and Slumps in the Seaspray Group of the Gippsland Basin
The Seaspray Group, of the Gippsland Basin creates complex acoustic velocity architecture within the basin that makes accurate processing and time-to-depth conversion of seismic reflection survey data very difficult. As a result, interpretation of the underlying Latrobe Group petroleum reservoir system can become compromised. Reinterpreting depositional components of the architecture of the Seaspray Group may result in an improved acoustic velocity field for depth conversion.
The Seaspray Group shows evidence of sliding and slumping material, and this study aimed to characterise these submarine environment events. The key components of a submarine slide and the deposits they produce are; the presence of a ductile basal detachment surface, slide blocks have a crescent-shaped scarp of slide blocks and toe thrust front, presence of sediment rollover, downlapping reflectors, mass flow, and deposits exhibit evidence of rapid fluidisation caused by dewatering events. During the Mid-Miocene, the Gippsland Basin was a shelf margin basin that underwent a significant compressional tectonic event. This event would have provided the shear stress to create sliding as extensional relief formed atop the Seaspray Group generated by growing anticlines in the Latrobe Group below. Submarine sliding and slumping aligns as an explanation of the structural complexities seen in seismic imaging data of the Seaspray Group, and other evidence supports it as a possibility.
Lunch will include a 2-course meal and drinks
Please note that bookings strictly close at 5pm Monday 21st June