
TY  - JOUR
A1  - Cogswell, Duncan 
T1  - Wireline Logging: Cost Effective Methods for New Water Bore Certification and Old Leaky Bore Rehabilitation Assessment
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2016
VL  - 2016
IS  - 1
SP  - 1
EP  - 1
KW  - 
UR  - https://doi.org/10.1071/ASEG2016AB1001 
N2  - 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. 
ER  -

