All posts in Technical

IAH NSW Meeting 14 May 2019: Dr Hamid Roshan (UNSW)

IAH NSW is pleased to announce that our next meeting on Tuesday 14 May 2019 features a talk by Dr Hamid Roshan, Senior Lecturer at the UNSW School of Minerals and Energy Resources Engineering.

Physics-based measurement of formation permeability using widely available downhole logging data

Formation permeability is of fundamental importance in many engineering disciplines such as groundwater, petroleum, civil and construction and others as it predominantly controls the flow of fluids in the sediments. The only reliable technique to measure the formation permeability at the moment is to acquire core from the formation during drilling. Such coring operations are however costly and therefore are often avoided. Thus indirect measurements using downhole logging data have been of interest. Unfortunately the techniques developed so far to estimate the permeability of the formation along the borehole are of empirical nature and therefore cannot be extended beyond their measured laboratory values. Needless to say that significant error has been observed when these empirical correlations were used to fit the values out of their measured range.

In a recent attempt in petroleum industry, Stoneley wave has been used to measure the permeability right at the borehole wall however the operation is quire costly and the obtained results are very sensitive to borehole conditions thus reducing the applicability of the method. We, for the first time, propose to use the resistivity logs and inverse modelling of coupled porous media fluid-ion transport to estimate the permeability of the formation with good accuracy and high vertical resolution. This is the first attempt to estimate the permeability from downhole logging data using direct physics based inverse modelling.

 

Venue: WSP office Level 27, 680 George Street, Sydney

Date: Tuesday 14 May 2019

Time: 5.30 pm for a 6.00 pm start.

Public access to level 27 is available until 6pm. Late arrivals call Ali for access – 0426254787

Call for IAH members’ input into MDBA submission

The Murray Darling Basin Commission (MDBA) has released a discussion paper regarding climate change and the Murray–Darling Basin Plan (mdba.gov.au/publications/mdba-reports/climate-change-murray-darling-basin-plan-discussion-paper).The discussion paper outlines projected climate change impacts, including increases in the intensity of extreme rainfall, time in drought and frequency of severe drought. It also provides examples of potential responses, including changing the type, distribution and timing of crop irrigation.

IAH views this discussion paper as an opportunity to emphasis the role that groundwater has in developing climate-resilient management practices within the Murray–Darling basin, due to its storage capacity, residence times, protected nature and large resilience to climate extremes.

IAH Australia is seeking members’ input into the submission. If you have input, case studies or examples that you’d like included in the submission then please contact IAH via secretariat@iah.org.au. The submission will be finalised by 1 April 2019.

IAH NSW Introductory course on Python for groundwater science: 5 December 2018

IAH NSW is pleased to announce that Dr Stuart Brown will be presenting a short course on Python for groundwater science on Wednesday 5 December. Dr Stuart Brown is a consultant hydrogeologist with HGEO Pty Ltd in Sydney. He has over 25 years’ experience in consulting and research for mining, infrastructure and agriculture projects. Over recent years, python has emerged as a popular and powerful set of tools for hydrological data analysis and visualisation with potential to streamline workflows. In this short course Stuart introduces Python for data analysis and applications to common groundwater tasks.

Costs are $60 for IAH members and $50 for students. Morning tea and lunch will be provided. To register please follow this link:

https://www.eventbrite.com.au/e/introductory-course-on-python-for-groundwater-science-tickets-51742758985

Places are limited to 15 so get in quick to book your spot.

Contact Ellen Kwantes (Ellen.Kwantes@wsp.com) (T: +61 2 92725078) for any questions or problems to register for the course.

Venue: WSP office Level 27, 680 George Street, Sydney

Time: 10am to 3pm

Course details

Take your hydrogeological data management and analysis to the next level with an introduction to Python. Python has become a popular language for scientific computing. It has all the friendly features and conveniences you would expect of a modern programming language. It boasts a rich set of libraries used and developed by hydrogeologists for working with data. The Python programming language offers adaptability and versatility to the types of analyses, modelling, and workflows that hydrogeologists use.

In this course you will learn:
•Introduction: Python for data science (and groundwater science)
•Python language basics and the standard library
•Key python science tools (e.g. Pandas, Scipy)
•Data manipulation and analysis examples using Pandas (examples: climate data and hydrographs)
•Data visualisation using Matplotlib and Seaborn
•Advanced topics: Groundwater modelling and processing

In all modules, attendees will work through real examples on their own laptops. So they will need to have Anaconda and Jupyter installed (instructions on how to do this will be emailed through prior to the course).

IAH NSW Regional Meeting and IAH/DPI Field Trip: 13 and 14 November 2018

IAH NSW is pleased to announce that this year’s regional meeting will be held in Mildura, with the following proposed itinerary:

Tuesday 13 November 5.30pm:  Presentation by Asitha Katupitiya (Director – Water Quality and Salinity Management MDBA) on the Basin Salinity Management Strategy.

Wednesday 14 November morning: Field trip to the Salt Interception Schemes (SIS) that pump saline groundwater to facilitate salinity reduction on the Murray River.

Field trip places are limited – please RSVP to Richard Cresswell to express your interest in the presentation and/or the field trip: richardc@ecoaus.com.au

Venue: TBC

Time: TBC

IAH NSW Talk: 12th September

IAH NSW is pleased to announce a talk by Dr Mark Armstrong, Manager Mineral Resource Assessment, Geological Survey of NSW. The presentation will provide an insight into current work and future directions in collaboration with DPI Water and Water NSW. The talk will be held at the WSP offices in Sydney on Tuesday 12th September 2017. Please arrive at 5:30pm for a 6pm start. For more information on the talk, venue and RSVP details click here.

IAH-NSW Talk: 13 June 2017

IAH NSW is pleased to announce two talks by the Bureau of Meteorology. Dr Andrew Frost, Senior Hydrologist, Water Information Services will provide an overview of their Landscape Water Balance Model. Brendan Dimech, Hydrogeologist, Groundwater Unit will showcase the Bureau’s suite of national groundwater products. The talk swill be held at the Parsons Brinckerhoff offices in Sydney on Tuesday 13th June 2017. Please arrive at 5:30pm for a 6pm start. For more information on the talk, venue and RSVP details click here.

IAH-NSW Talk: Dr Chris Yeats, 14 Feb

IAH NSW is pleased to announce a talk by Dr Chris Yeats, Executive Director of the Geological Survey of NSW. Chris will provide a snapshot of a selection of GSNSW’s key projects and latest products and datasets, including new online delivery platforms, 3D basinal models and the recently released Quaternary Coastal Geology of NSW. The talk will be held at the Parsons Brinckerhoff offices in Sydney on Tuesday 14th February 2017. Please arrive at 5:30pm for a 6pm start. For more information on the talk, venue and RSVP details click here.

Speleo2017 in NSW

https://www.speleo2017.com/Images/logo3.png

17th International Congress of Speleology will be held in Penrith, NSW, on 23-29 July, 2017.

More information can be found on in our events listing.

IAH-NSW Talk: Michael Knight, 13 Sep

IAH NSW is pleased to announce a technical talk by Michael Knight, Emeritus Professor of Hydrogeology, University of Technology, Sydney. Michael will discuss the Water Supply and Management at Zagora, Andros Island, Greece during the 9th and 8th Centuries BC. The talk will be held at the Parsons Brinckerhoff offices in Sydney on Tuesday 13th September 2016. Please arrive at 5:30pm for a 6pm start. For more information on the talk, venue and RSVP details click here.

IAH-NSW Talk 12 July: Helen Rutlidge on Hyporheic Zone Processes

IAH NSW is pleased to announce a technical talk by Dr Helen Rutlidge on Hydrogeochemical and ecological processes in the hyporheic zone and the response to groundwater drawdown. Helen is a Post-Doctoral Fellow of the Connected Waters Initiative (Faculty of Science, Faculty of Engineering) at UNSW Australia and is based at the UNSW Water Research Laboratory in Manly Vale.  The talk will be held at the Parsons Brinckerhoff offices in Sydney on Tuesday 12th July 2016. Please arrive at 5:30pm for a 6pm start. For more information on the talk, venue and RSVP details click here