new well report (well log) form

New Well Report (Well Log) Form

Mike Wei, P. Eng., WLAPDiana Allen, P. Geo., SFU

Tammy Blair, WLAP

BCGWA AGM Penticton, March 4, 2005

Outline

• Purpose for a new well form

• Overview of form

• Next steps

• Example of information in well construction reports to assist in regional mapping of the aquifer at Grand Forks

Why change the current well log form?

• Update existing form with new terms in the Ground Water Protection Regulation (GWPR); e.g., class of well

Elements of the new form• Primarily designed for water wells

• Record of work of:

– Well construction,

– Significant alteration,

– Well closure

• Incorporates new terms and requirements in the GWPR

• Promotes standardization of well reporting, with particular focus on lithologic description

• Facilitates more efficient analysis of well data

How was the form developed?

• Based largely on the existing well log form

• Incorporates GWPR reporting requirements for well construction, alteration or closure work

• Review / input from the Ground Water Advisory Board (GWAB) and select water well drillers

Two options for the form

• Two options for the form are available:

– “free” form

– “Ontario” form

• Both promote the use of standard lithological terms; difference in the form is how lithology is entered by the driller;

• Everything else on the form is the same

Overview of the form - header

Overview of form - top part

• Well owner and mailing address• Well location (critical for processing into WELLS)

– Address, Legal or PID and

– GPS (UTM or LAT LONG)• Type of work• Method of drilling• Type of well (refer to class and sub-class on back of form)

Overview of form - lithology

• Refer to standard lithologic descriptions on the back of the form

• What are standard lithologic descriptions?– Lithology type

– Hardness

– Colour

Overview of form – lithology(Ontario form)

• Requires a “shift in thinking” on how lithology is filled out “by numbers”

• Benefit: standardized lithology provides a common basis for describing, processing and eventual interpretation of data

• Electronic well report can be printed out with lithologic terms as word descriptions, not numbers

Example of Ontario Litho Entry

1 = most dominant; 2 = second most dominant; 3 = minor; 4 = trace

Overview of form – casing and screen details

Overview of form – development, yield, water quality, summary, (closure)

Overview of form – footer

• Disclaimer

• Form number

• Additional sheets, if necessary

• Copies

Overview of form – back• Class, sub-class of wells

• FOI statement

• Guidance on how to fill out the lithologic table

• Guidance on how to fill out the well closure table

• Information on who is responsible for the work

• Abbreviations

How does the form relate to the WELLS database?

• Database is now being formatted to accommodate this new form

• 8 ½” X 14” forms (hard copy “pads”) will need to be entered into WELLS by WLAP staff

• A driller will be able to enter the data directly on-line using a new web-based well entry form (under development). For on-line submission, the report may be formatted to print on an 8 ½” X 11” sheet

Next steps

• Indication of interest from drillers in trying out one or both versions of the form in the field

• WLAP to print up well form “pads”

• Get feedback from drillers for improvement of structure of the form

• Revise and finalize version of form by Nov. 1, 2005

Well records are critical to ouroverall understanding of aquifers

• Recent aquifer assessment studies:

– Grand Forks, Abbotsford, Gulf Islands

– Okanagan Basin

– All aquifer classification mapping and vulnerability studies

• Contaminated site assessments

Grand Forks valley

Kettle River

Grand Forks city

Bedrock surfacemodel (bottom ofvalley sediment fill)

Deep sands (probably more extensive in reality)

Clay / Till (deep, mostly unknown sediments)

Silt / silty sands (lacustrine deposits, with fluvial sediments)

Sands (“aquifer”) (fluvial & glaciofluvial sediments)

Gravels (“aquifer”) (most recent fluvial sediments)

Thank you!

Questions?