THS in Scotland Evening Meeting

THS in Scotland
Date25 April 2018
Time18:30
VenueCarmelite Hotel, Stirling Street, AB11 6JU

Presentations will include:
 
Advances in High Resolution Seismic Surveying

by Scott Griffiths (Fugro)

In recent years, there have been significant advances in high resolution (HR) seismic surveying. De-ghosting has been developed both at the acquisition phase (ghost-free sources) and at the processing stage of projects. Seismic surveying has improved from two dimensions (2DHR) to three dimensions (3DHR) with the addition of multiple streamer receivers. With the ever-increasing demand for more resolute data, there have also been advances in ultra-high (UHR) seismic surveying including 3DUHR projects focused towards boulder detection in the shallow sediments.

Why do we need HR3D data anyway?

by Francis Buckley (Lloyd's Register)

HR3D site surveys have been under consideration for several years but what are the benefits of HR3D data over their HR2D equivalent? This presentation will summarise the main workflows whereby interpretation of HR3D data volumes may significantly improve the advice delivered to end-users concerning the impact of geology on engineering projects.

These workflows include 3D migration, the ability to extract lines, in-lines, arbitrary lines and horizontal slices from anywhere in the volume and the ability to map continuous surfaces. But the ability to manipulate and interpret HR3D data extends much further, by taking advantage of techniques developed by the exploration seismic community. The end-result is a seamless data-driven, multi-attribute ground-model, capable of interrogation to the full extent of HR3D data resolution. It is suggested that site survey interpretation techniques have changed little since the advent of desk-top computing in the 1990's but, by promoting the use of HR3D data and employing a more comprehensive and sophisticated suite of interpretation methodologies, site investigation interpretative products may result in significant de-risking of offshore engineering projects.

HRS 3D - The new norm for Shallow Geohazard Surveys?

by Ed Self (Gardline)

This presentation will be looking at the developments in HRS 3D technology developed by Gardline over recent years, by comparing and contrasting with the current practice used in 2D Shallow Geohazard Investigations. Over the course of the discussion, some of the inherent limitations in 2D site surveys are investigated, highlighting the benefits that are brought by the use of HRS 3D. Throughout numerous data examples are presented showing the geological detail that is obtained from a 3D HRS cube. The discussion moves forwards to cover enhanced geohazard assessment from HRS 3D, reducing false positives and un-prognosed gas shows and reviewing options to assess deviated wells over their entire trajectory in the shallow section. Finally there is a case study on micro-siting a multi-slot template and how HRS 3D proved successful. 


All members and and non-members welcome.

A selection of cold food and drinks will be available from 18:30 and presentations will start at 19:00 prompt. 

There is a charge of £10 for admission payable online during registration to cover catering (please ask at the door if you require a receipt). Admission is free for Students.

Please pre-register at https://thsis_hrs.eventbrite.co.uk

For further information please contact scotland@ths.org.uk

photo

hydro18_logo_for_website.jpg (4.6 K)


 

Hydro Presentations 

Download presentations from past Hydro conferences 



 

Read the latest issue of our digital biannual publication

IFHS News


 

Member Societies