Google Links
Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge
Elements and Performance Criteria
- Plan and prepare for the construction of single aquifer production bores
- Access, interpret and apply single aquifer production bore construction documentation and ensure the work activity is compliant
- Obtain, read, interpret, clarify and confirm work requirements
- Identify and address potential risks, hazards and environmental issues and implement control measures
- Select and wear personal protective equipment appropriate for work activities
- Discuss scope of work with client and give technical advice, cost structure, workmanship warranty, quantity and quality of materials, construction standards and methods to be used and gain general agreement on drilling plan
- Obtain or sight any licences or permits required under the relevant state/territory legislation or regulation
- Communicate and coordinate activities with others throughout the work activity
- Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
- Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
- Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
- Design production bores for single aquifer systems
- Construct production bores in single aquifer systems
- Carry out any pre-start and start up procedures on plant or ancillary equipment
- Identify, select and apply rig operational controls
- Select, slot, assemble, and insert casing and screens suitable for the formations in which they are deployed
- Select, mix and place grout or otherwise seal surface casing to whatever depths necessary and with a minimum grout sheath thickness of 20mm to protect bore from surface or shallow subsurface waters that may be contaminated or polluted
- Use and maintain drilling fluids and additives within the manufacturer’s recommendations and that are non-toxic and capable of being completely removed from the bore upon completion
- Maintain, test and record fluid properties such as viscosity, mid weight, filtration and sand content so that the potential capacity, efficiency and quality of the bore is not affected
- Maintain plumbness and alignment of the hole within the required limitations and perform plumbness tests where required
- Collect, store, record, label and transport formation and water samples for mechanical and/or chemical analysis
- Maintain all records accurately and legibly
- Accurately calculate hole, annular fill, gravel pack and mud pit volumes in cubic metres or litres
- Select appropriate gravel pack or stabilising gravel fill materials
- Place artificial or stabilising gravel fill if required in a manner that will ensure uniform distribution in the annular space without bridging, voids or segregation
- Comply with relevant workplace occupational health and safety requirements for both the drilling equipment and construction materials
- Maintain tool string inventories
- Identify and protect headworks of the bore
- Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns (e.g. flooding), damage and vandalism
- Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
- Remove drilled fluids from the bore to allow subsequent development
- Dispose of/neutralise wastewater or hazardous materials from site and complete restoration of the bore site and camp facilities
- Maintain tool strings and inventories
- Develop bore
- Disinfect/decontaminate bore and drilling equipment
- Carry out bore maintenance and rehabilitation
- Decommission test/bore holes
- Plan and prepare for the construction of single aquifer production bores
- Access, interpret and apply single aquifer production bore construction documentation and ensure the work activity is compliant
- Obtain, read, interpret, clarify and confirm work requirements
- Identify and address potential risks, hazards and environmental issues and implement control measures
- Select and wear personal protective equipment appropriate for work activities
- Discuss scope of work with client and give technical advice, cost structure, workmanship warranty, quantity and quality of materials, construction standards and methods to be used and gain general agreement on drilling plan
- Obtain or sight any licences or permits required under the relevant state/territory legislation or regulation
- Communicate and coordinate activities with others throughout the work activity
- Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
- Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
- Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
- Design production bores for single aquifer systems
- Construct production bores in single aquifer systems
- Carry out any pre-start and start up procedures on plant or ancillary equipment
- Identify, select and apply rig operational controls
- Select, slot, assemble, and insert casing and screens suitable for the formations in which they are deployed
- Select, mix and place grout or otherwise seal surface casing to whatever depths necessary and with a minimum grout sheath thickness of 20mm to protect bore from surface or shallow subsurface waters that may be contaminated or polluted
- Use and maintain drilling fluids and additives within the manufacturer’s recommendations and that are non-toxic and capable of being completely removed from the bore upon completion
- Maintain, test and record fluid properties such as viscosity, mid weight, filtration and sand content so that the potential capacity, efficiency and quality of the bore is not affected
- Maintain plumbness and alignment of the hole within the required limitations and perform plumbness tests where required
- Collect, store, record, label and transport formation and water samples for mechanical and/or chemical analysis
- Maintain all records accurately and legibly
- Accurately calculate hole, annular fill, gravel pack and mud pit volumes in cubic metres or litres
- Select appropriate gravel pack or stabilising gravel fill materials
- Place artificial or stabilising gravel fill if required in a manner that will ensure uniform distribution in the annular space without bridging, voids or segregation
- Comply with relevant workplace occupational health and safety requirements for both the drilling equipment and construction materials
- Maintain tool string inventories
- Identify and protect headworks of the bore
- Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns (e.g. flooding), damage and vandalism
- Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
- Remove drilled fluids from the bore to allow subsequent development
- Dispose of/neutralise wastewater or hazardous materials from site and complete restoration of the bore site and camp facilities
- Maintain tool strings and inventories
- Develop bore
- Disinfect/decontaminate bore and drilling equipment
- Carry out bore maintenance and rehabilitation
- Decommission test/bore holes
Performance Evidence
Knowledge Evidence
The candidate must demonstrate knowledge in constructing and completing single aquifer production bores through:
accessing, interpreting and applying the organization and site requirements and procedures for:work, health and safetyenvironmental issuesoperating drill righousekeepingequipment characteristics, technical capabilities and limitationsbasic geological formations, i.e. basic knowledge of both soil and rock classifications and various formations which permit groundwater movement and factors affecting groundwater quality for aquifer systems, including drillability and stabilitypotential safety hazards and sources of contamination when siting a borethe necessity of having a signed agreement/contract with the clienttesting for alignment and plumbness of boresthe appropriate casing materials for various applicationsthe applications for wire-wound screensthe casing requirements, slotting techniques, slot location and orientationthe sieve analysis resultsthe applications for natural pack, stabilising fill and artificial pack completion techniquesthe objectives of bore developmentthe test pumping procedurescomplying with the appropriate disinfecting chemicals and proceduresunderstanding the characteristics of ‘good samples’ required for water well constructionthe ways in which sampling errors can occurtypes of drilling fluids, their selection, use, testing and conditioningproblem solving techniques the grout placement methods and proceduresusing numerical knowledge to calculate:volume (e.g. mud pits, drums, tanks or bore holes of given dimensions, annulus)up hole velocitycement/water/additives quantitiesscreen design parametersflow rates (e.g. L/sec, GPM)conversion from imperial to metric and vice versaconducting a sieve analysisthe appropriate fishing operations for the type(s) of drilling being undertakenbeing prepared for fire/accident/emergency