ADIA Sundowner Presentation Toowoomba - 4 May 2017 Construc)on - - PowerPoint PPT Presentation

Department of Natural Resources and Mines

ADIA Sundowner Presentation

Toowoomba - 4 May 2017

Department of Natural Resources and Mines

Construc)on standards

• Do you know whether you are drilling into the Great Artesian Basin?
• GAB sub-artesian bores must also comply with minimum standards for

water bores into sediments of the artesian basin.

• Drillers must no>fy the department before commencing construc>ng a GAB

bore at least one to five business days beforehand.

• GAB bores need to be cement grouted from the boAom upwards, from no

more than 30 metres above the produc>on zone (slots/screen) to the surface.

• Drillers must report on all bore drilling and cemen>ng within 60 business

days of commencing the works/bore.

Department of Natural Resources and Mines

Construc)on standards

• We develop and enforce the construc>on standards to:
• Help protect the resource:
• Oakey PFAS contamina>on
• CSG and petroleum ac>vi>es
• Help ensure landholders have safe and secure long-term supplies:
• Impact assessment between en>tlements
• Help ensure impacts are avoided on environmental assets

Department of Natural Resources and Mines

GAB forma>on Cemen>ng required from no more than 30m above the produc>on zone to the surface. Produc>on zone is 66m to 108m, thus needs grout at least 36m.

Department of Natural Resources and Mines

Cemen>ng required from no more than 30m above the produc>on zone to the surface (in this circumstance, zone is 90 to 110m).

GAB from 36m below ground level. Produc>on zone between 90–110m. Cemen>ng required at least 60m.

Department of Natural Resources and Mines

Example: Driller’s cemen>ng report to be supplied to department within 60 business days.

Department of Natural Resources and Mines

Drillers licencing

Class 1

• Permits work in non-flowing (subartesian) single aquifer systems.
• Authorises the holder to drill a subartesian bore in a formation that

contains the aquifer closest to the land surface.

• Not allowed to drill through the upper aquifer formation to tap deeper

formations. Class 2

• In addition to class 1 - permits work in non-flowing (subartesian) multiple

aquifer systems.

• Allowed to drill through the upper aquifer formation to tap deeper

subartesian formations. Class 3

• In addition to class 2 - permits bore drilling in flowing (artesian) aquifer

systems.

Department of Natural Resources and Mines

Bore has intersected basalt and then progressed down to sandstone. Appears to be slo[ng both basalt and sandstone. Class 1 Driller

Example of class 1 driller intersec)ng two aquifers:

N.B. Drillers who drill into an aquifer system for which they are not licenced (for example, a class 1 driller who intersects two aquifers or artesian) must contact the department as soon as it is prac>cal to do so for instruc>ons on how to proceed by either construc>ng the bore or decommissioning the hole.

Department of Natural Resources and Mines

Compliance and audi)ng

• Departmental officers audit each and every drill log that is received
• Records are maintained of non-compliance
• Basic issues are usually discussed with the driller via phone or leAer
• Serious breaches are referred to Bruce Keogh and are also entered into the

departments compliance database – examples:

• Drilling holes with wrong class of driller
• Failure to cement bores
• Issues that will poten>ally cause damage to the resource
• Con>nual non-compliance
• Compliance is performed to ensure:
• Resource is protected
• Landholders have safe and secure water supply

Department of Natural Resources and Mines

DNRM receive drill log from driller Drill log data validated, audited and entered into GWDB and QLD Globe When you ask DNRM about the where, what, when, how etc

• f drilling a bore, previous drill log informa>on is one of the

key sources of informa>on we use.

How the informa)on you give us…helps you…

Department of Natural Resources and Mines

Strange things we come across…

If you are going to use non-geological descrip>ve terms, please detail on the back of the drill log what you really mean…

Department of Natural Resources and Mines

Actual property descrip>on

The department requires accurate location of the bore sites…

GPS coordinates place bore on different property

If you need assistance to set up your GPS, please contact the department and we will be more than happy to assist.

Issues include:

• Lot plan not matching GPS loca>on
• GPS coordinates back to front
• GPS coordinates jumbled
• GPS in wrong datum

Department of Natural Resources and Mines

Conversion of petroleum wells to water bores

• Ex-petroleum wells cannot be converted to water bores unless:
• You have spoken with departmental groundwater officers
• the converted well will meet water bore construc>on/

recondi>oning standards.

• You must no>fy DNRM before you start conver>ng a well to a water bore

and ager you have finished the conversion.

• You also need to no>fy the department and provide a report if you

decommission or abandon the bore.

• CSG wells drilled ager 1 January 2012 are more likely to comply with

water bore standards as they have been constructed to the Code of Prac>ce for CSG wells in Qld.

• The ownership of the well should be established by contac>ng DNRM

before any conversion/recondi>oning is undertaken.

Department of Natural Resources and Mines

Are you aware?

• Limita>ons on drilling bores for stock and domes>c purposes within

areas able to access town water –

• Extent of the Qld Murray Darling Basin
• Applies to all aquifers except Great Artesian Basin aquifers
• Groundwater contamina>on in Oakey Creek Alluvium, no restric>on on

drilling a bore, however need to be aware of implica>ons for clients and ensure strict compliance with construc>on standards to prevent any interconnec>vity of aquifers while drilling and once constructed.

• Can replace a bore without need for development permit, providing you

meet requirements of self-assessable code for replacement bores.

• GAB Water Plan currently being revised and new version due out Sept

2017.

Department of Natural Resources and Mines

Informa)on sources

• Minimum Construc>on Standards for Water Bores in Australia
• Minimum Standards for the construc>on and recondi>oning of water

bores that intersect the sediments of artesian basins in Queensland

• Queensland Globe -

hAps://www.business.qld.gov.au/running-business/support-assistance/ mapping-data-imagery/maps/queensland-globe/about

• Maps of the extent of various groundwater resources
• Can I drill a bore flow chart
• You can talk to departmental officers across the region who have local

groundwater knowledge

• Bruce Keogh and Blake Topp – discuss construc>on issues and drillers

licensing

Department of Natural Resources and Mines

Departmental contacts

West of Great Dividing Range

Cathy Willis – 07 4529 1403 (Toowoomba) Mick Murdoch – 07 4661 0200 (Warwick) Ashton Beeby – 07 4529 1394 (Toowoomba) Shane Moloney – 07 4671 6105 (Goondiwindi)

East of Great Dividing Range

ScoA Boreel – 07 4131 2377 (GaAon) Blake Topp – 07 4220 4125 (GaAon) Mick Francis

• 07 5466 2252

(GaAon) Johnny Zirilli

• 07 4131 2366

(Bundaberg)

Department of Natural Resources and Mines

Thankyou…