ASEG WA - September Tech Night event

The WA Branch of the Australian Society of Exploration Geophysicists invites current active members to attend our upcoming ASEG WA Branch Tech night event at our new venue in CBD at Yagan Square, but still with the usual snacks and drinks provided. Note that there is plenty of public transportation, and, if need be, paid parking is available at nearby Wilson Parking - 427 Murray St - Google Maps. The venue has wheelchair accessibility. The details of the speech title and the author's bio are provided below.
 

Registration: https://www.eventbrite.com.au/e/aseg-wa-branch-event-september-2021-tech-night-tickets-167719783387

Speech title: Downhole Assays via Elemental Spectroscopy
Speaker: Jennifer Market, Geophysics Manager, Epiroc's Kinetic Logging Services

Talk summary: 
Pulsed neutron wireline tools were introduced to the Australian iron ore industry in 2011 to deliver "downhole assays" and since then, the technology has developed into a reliable and efficient means of supplementing and even replacing traditional assay analysis. 
Not only are there safety benefits through reduced site exposure, but the technology allows for better vertical resolution and near-real-time results. The potential cost savings can be significant, with some companies stating that downhole assays are currently saving them ten million dollars a year compared to conventional methods.
Not only can the technology be used to grade iron ore at the site, but it can also measure percentages of minor elements such as silicon, aluminium, copper, nickel, titanium, manganese, magnesium, calcium, phosphorus, sulphur, and sodium, as well as hydrogen, oxygen, chlorine, and carbon. They can also measure proxies for LOI (loss on ignition).  The sampling resolution is generally 10-20 cm - considerably higher than the typical 2 metre sampling used in conventional assay in the Pilbara, allowing for less assumptions about minor element distribution.  The depth of investigation approximately 30-50 cm which also gives a more representative sample. 
This presentation will begin with a description of pulsed fast and thermal neutron activation technology as implemented in the downhole assay environment, paying attention to the calibration methods. Then, a case study will be presented in detail, discussing the data acquisition and calibration programme. The results of the downhole assay compared to traditional assay will be discussed, considering the pros and cons of each method.
 

Speaker Bio: 

Jennifer Market is the Geophysics Manager for Epiroc's Kinetic Logging Services, with 20+ years' experience in research and development of mineral logging (mining) and oilfield technologies and applications with particular expertise in downhole assays, acoustics and geomechanics.

REGISTRATION and RSVP are REQUIRED on or before 30th August to give our hosts at Shoe Bar enough time to properly set up their venue. ASEG WA Branch would like to give thanks to sponsors for their continuous support.

Please email wasecretary@aseg.org.au with any queries or for additional information. Kindly rsvp in the below link to get a spot as seats are limited. We are looking forward to seeing you there.