
%0 Journal Article
%A Cogswell, Duncan 
%T Wireline Logging: Cost Effective Methods for New Water Bore Certification and Old Leaky Bore Rehabilitation Assessment
%J ASEG Extended Abstracts
%D 2016/08/24
%V 2016
%N 1
%P 1-1
%K 
%R https://doi.org/10.1071/ASEG2016AB1001
%U https://www.publish.csiro.au/paper/ASEG2016AB1001 
%X Water bores in Australia are important capital assets used for local town water supply, agricultural stock supply and irrigation or simply as an indicator of the region&#x2019;s aquifer health. Water bore construction methods used in previous decades has led to a pervasive problem of surface leakage and/or sub surface leakage and aquifer contamination particularly in relation to the Great Artesian Basin. Wireline logging methods are available to assess if a new water bore meets current design requirements to prevent leakage/contamination issues (hence certification) or to assess the current internal and &#x201c;in situ&#x201d; condition of old water bores. Knowledge of the current &#x201c;in situ&#x201d; condition of the water bore will be able to direct a rehabilitation workover programme. Methods range from a simple 3 arm caliper for internal casing inspection and full wave sonic logging is assess the presence/absence of cement in the annulus of the casing through to high resolution acoustic (multi-fingered caliper) and optical imaging of the internal casing. Methods are discussed and examples provided. 
