Identification_Information :

    Citation :

      Citation_Information :

        Originator : Alberta Energy Regulator

        Originator : Alberta Geological Survey

        Originator : Nakevska, N.

        Originator : Onojeghuo, A.

        Originator : Babakhani, M.

        Originator : Geng, H.

        Originator : Rabbani, A.

        Publication_Date : 2024

        Title : Aquifer Indication of the Leduc Formation, Swan Hills / Slave Point Formations, and Granite Wash in Alberta (gridded data, GeoTIFF format)

        Geospatial_Data_Presentation_Form : raster digital data

        Series_Information :

          Series_Name : Digital Data

          Issue_Identification : DIG 2024-0019

        Publication_Information :

          Publication_Place : Edmonton, Alberta, Canada

          Publisher : Alberta Geological Survey

        Online_Linkage : https://ags.aer.ca/publication/dig-2024-0019

    Description :

      Abstract : This gridded dataset contains aquifer indication grids for the Leduc Formation, the combined Swan Hills and Slave Point formations, and the Granite Wash in Alberta. The grids are a result of analysis and evaluation of water-recovery data from drillstem tests, water flow rates from production and injection wells, and information on hydrocarbon-water contacts and wet wells (water-saturated). For each data source, scoring criteria were established and a score was assigned at each location. Scores from all data sources at each location were merged, and a final aquifer indication score from 1 (low) to 4 (very high) was assigned. The final grids were created by interpolating the final aquifer indication scores derived at each well location and classifying the resulting grids into four aquifer indication classes from 1 (low) to 4 (very high). These grids served as one of the input layers in the weighted analysis for geothermal favourability mapping.

The aquifer indication grids provide a semi-quantitative description of the possibility of aquifer existence rather than quantification. It is a reasonable approximation based on the combined existing information of where the formation has shown it can produce water. Due to the data and information originating mostly from hydrocarbon exploration and development activities, there are biases and limitations associated with this analysis.

This digital data product is part of the Geothermal Atlas of Alberta, developed under the Mineral Grant provided by the Government of Alberta.

      Purpose : To provide gridded datasets describing the aquifer indication for the Leduc Formation, the combined Swan Hills and Slave Point formations and the Granite Wash.

      Supplemental_Information : Language: In English;

    Time_Period_of_Content :

      Time Period Information :

        Single Date/Time :

          Calendar_Date : 2024

    Currentness_Reference : compilation date

  Status :

    Progress : Complete

    Maintenance_and_Update_Frequency : None planned

  Spatial Domain :

    Bounding Coordinates :

      West_Bounding_Coordinate : -120

      East_Bounding_Coordinate : -110

      North_Bounding_Coordinate : 60

      South_Bounding_Coordinate : 49

  Keywords :

    Theme :

      Theme_Keyword_Thesaurus : ISO 19115 Topic Category

      Theme_Keyword : aquifer indication

      Theme_Keyword : atlas

      Theme_Keyword : devonian

      Theme_Keyword : geology

      Theme_Keyword : geothermal

      Theme_Keyword : granite wash

      Theme_Keyword : grid

      Theme_Keyword : leduc formation

      Theme_Keyword : slave point formation

      Theme_Keyword : swan hills formation

    Place :

      Place_Keyword_Thesaurus : ISO 19115 Topic Category

      Place_Keyword : 72e

      Place_Keyword : 72l

      Place_Keyword : 72m

      Place_Keyword : 73d

      Place_Keyword : 73e

      Place_Keyword : 73l

      Place_Keyword : 73m

      Place_Keyword : 74d

      Place_Keyword : 74e

      Place_Keyword : 74l

      Place_Keyword : 74m

      Place_Keyword : 82g

      Place_Keyword : 82h

      Place_Keyword : 82i

      Place_Keyword : 82j

      Place_Keyword : 82n

      Place_Keyword : 82o

      Place_Keyword : 82p

      Place_Keyword : 83a

      Place_Keyword : 83b

      Place_Keyword : 83c

      Place_Keyword : 83d

      Place_Keyword : 83e

      Place_Keyword : 83f

      Place_Keyword : 83g

      Place_Keyword : 83h

      Place_Keyword : 83i

      Place_Keyword : 83j

      Place_Keyword : 83k

      Place_Keyword : 83l

      Place_Keyword : 83m

      Place_Keyword : 83n

      Place_Keyword : 83o

      Place_Keyword : 83p

      Place_Keyword : 84a

      Place_Keyword : 84b

      Place_Keyword : 84c

      Place_Keyword : 84d

      Place_Keyword : 84e

      Place_Keyword : 84f

      Place_Keyword : 84g

      Place_Keyword : 84h

      Place_Keyword : 84i

      Place_Keyword : 84j

      Place_Keyword : 84k

      Place_Keyword : 84l

      Place_Keyword : 84m

      Place_Keyword : 84n

      Place_Keyword : 84o

      Place_Keyword : 84p

      Place_Keyword : alberta

      Place_Keyword : canada

      Place_Keyword : west central alberta

  Access_Constraints : AGS

  Use_Constraints : For AGS internal use only.

  Point_of_Contact :

    Contact_Information :

      Contact_Organization_Primary :

        Contact_Organization : Alberta Geological Survey

        Contact_Person : AGS Information Manager

      Contact_Position : AGS Information Manager

      Contact_Address :

        Address_Type : mailing and physical

        Address : Alberta Energy Regulator

        Address : 2th Floor, Twin Atria Building

        Address : 4999-98 Avenue NW

        City : Edmonton

        State_or_Province : Alberta

        Postal_Code : T6B 2X3

        Country : Canada

      Contact_Voice_Telephone : (780) 638-4491

      Contact_Facsimile_Telephone : (780) 422-1459

      Contact_Electronic_Mail_Address : AGS-Info@aer.ca

      Hours_of_Service : 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

  Cross_Reference :

    Citation_Information :

      Originator : Alberta Energy Regulator

      Originator : Alberta Geological Survey

      Originator : Onojeghuo, A.

      Originator : Nakevska, N.

      Originator : Geng, H.

      Originator : Rabbani, A.

      Originator : Babakhani, M.

      Publication_Date : 2024

      Title : Geothermal Atlas of Alberta, Version 1 (interactive app and map, methodology, dataset, web maps)

      Geospatial_Data_Presentation_Form : view

      Series_Information :

        Series_Name : Interactive App and Map

        Issue_Identification : IAM 016

      Publication_Information :

        Publication_Place : Edmonton, Alberta, Canada

        Publisher : Alberta Geological Survey

      Online_Linkage : https://ags.aer.ca

  Cross_Reference :

    Citation_Information :

      Originator : Alberta Energy Regulator

      Originator : Alberta Geological Survey

      Originator : Nakevska, N.

      Originator : Onojeghuo, A.

      Originator : Geng, H.

      Originator : Rabbani, A.

      Publication_Date : 2024

      Title : Aquifer Indication of the Leduc Formation, Swan Hills / Slave Point Formations, and Granite Wash in Alberta (tabular data, tab-delimited)

      Geospatial_Data_Presentation_Form : tabular digital data

      Series_Information :

        Series_Name : Digital Data

        Issue_Identification : DIG 2024-0015

      Publication_Information :

        Publication_Place : Edmonton, Alberta, Canada

        Publisher : Alberta Geological Survey

      Online_Linkage : https://ags.aer.ca

Data_Quality_Information :

  Attribute_Accuracy :

    Attribute_Accuracy_Report : The aquifer indication grids provide a semi-quantitative description of the possibility of aquifer existence rather than quantification. It is a reasonable approximation based on the combined existing information of where the formation has shown it can produce water. Due to the data and information originating mostly from hydrocarbon exploration and development activities, there are biases and limitations associated with this analysis.

  Logical_Consistency_Report : Grid-cell spacing is 250 m by 250 m. Grid cells with no data are assigned the value -9999.

  Completeness_Report : The boundaries of the aquifer indication grids were established by considering the spatial distribution of pertinent data for each dataset. This process deliberately excluded areas lacking sufficient data, aiming to minimize uncertainty in predictions.

  Positional_Accuracy :

    Horizontal_Positional_Accuracy :

   Horizontal_Positional_Accuracy_Report : Grid-cell spacing is 250 metres by 250 metres.

    Vertical_Positional_Accuracy :

   Vertical_Positional_Accuracy_Report : n/a

  Lineage :

    Source_Information :

      Source_Citation :

        Citation_Information :

          Originator : Alberta Energy Regulator

          Originator : Energy Resources Conservation Board

          Originator : Alberta Energy and Utilities Board

          Publication_Date :

          Title : Oil and gas well data from AER corporate database

          Geospatial_Data_Presentation_Form : database

          Series_Information :

            Series_Name : Non-AGS Data Source

            Issue_Identification : n/a

          Publication_Information :

            Publication_Place : Calgary, Alberta, Canada

            Publisher : Alberta Energy Regulator

          Online_Linkage : Not available online.

   Source_Scale_Denominator :

   Type_of_Source_Media : database

        Source Time Period of Content :

          Time Period Information :

            Single Date/Time :

       Calendar_Date :

     Source_Currentness_Reference : publication date

     Source_Citation_Abbreviation : DSTs, well logs

     Source_Contribution : analysis of water recovery from DSTs

    Source_Information :

      Source_Citation :

        Citation_Information :

          Originator : Alberta Energy Regulator

          Originator : Alberta Geological Survey

          Originator : Nakevska, N.

          Originator : Onojeghuo, A.

          Originator : Geng, H.

          Originator : Rabbani, A.

          Publication_Date : 2024

          Title : Aquifer Indication of the Leduc Formation, Swan Hills / Slave Point Formations, and Granite Wash in Alberta (tabular data, tab-delimited)

          Geospatial_Data_Presentation_Form : tabular digital data

          Series_Information :

            Series_Name : Digital Data

            Issue_Identification : DIG 2024-0015

          Publication_Information :

            Publication_Place : Edmonton, Alberta, Canada

            Publisher : Alberta Geological Survey

          Online_Linkage : https://ags.aer.ca

   Source_Scale_Denominator :

   Type_of_Source_Media : online

        Source Time Period of Content :

          Time Period Information :

            Single Date/Time :

       Calendar_Date : 2024

     Source_Currentness_Reference : publication date

     Source_Citation_Abbreviation : DIG 2024-0015

     Source_Contribution : input data for aquifer indication grids

    Process_Step :

   Process_Description : 1. Water recovery data from drillstem tests, water-production rates, and information on hydrocarbon-water contacts and wet wells (water-saturated) from the AER corporate database were analysed for each location within specific geological unit.

2. For each data source, scoring criteria were established and a score was assigned for each criteria at each location.

3. Scores from all data sources at each location were merged, and a final aquifer indication score was assigned as follows:

1 (low aquifer indication)

2 (medium aquifer indication)

3 (high aquifer indication)

4 (very high aquifer indication)

4. The final grids were created by interpolating the final aquifer indication scores derived at each well location using the indicator kriging technique. Indicator kriging is a geostatistical technique used to estimate the spatial distribution of a categorical variable. Instead of working with the actual data values, indicator kriging uses binary indicators to represent the presence or absence of a particular attribute. These indicators are then used in the kriging process to produce estimates and associated probabilities across the study area, allowing for the creation of probabilistic maps that can help in decision-making.

5. The resulting grids were classified into four aquifer indication classes from 1 (low) to 4 (very high). These grids served as one of the input layers in the weighted analysis for geothermal favourability mapping of evaluated geological units.

   Process_Date : 2024

  Data_Quality_Information :

Spatial_Data_Organization_Information : Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Grid cell

Row Count: Leduc Formation - 3706 | Swan Hills / Slave Point formations - 3866 | Granite Wash - 1447

Column Count: ?Leduc Formation - 2734 | Swan Hills / Slave Point formations - 1720 | Granite Wash - 1507

Spatial_Reference_Information : Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 10TM AEP Forest

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9992

Longitude_of_Central_Meridian: -115.0

Latitude_of_Projection_Origin: 0.0

False_Easting: 500000.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000000002219135986081256

Ordinate_Resolution: 0.000000002219135986081256

Planar_Distance_Units: metre

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983

Ellipsoid_Name: GRS 1980

Semi-Major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information : Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview: Grid cell values represent the four aquifer indication-class values: 1 (low), 2 (medium), 3 (high), and 4 (very high).

  Distribution_Information :

    Distributor :

      Contact_Information :

        Contact_Organization_Primary :

          Contact_Organization : Alberta Geological Survey

          Contact_Person : AGS Information Manager

        Contact_Position : AGS Information Manager

        Contact_Address :

          Address_Type : mailing and physical

          Address : Alberta Energy Regulator

          Address : 2th Floor, Twin Atria Building

          Address : 4999-98 Avenue NW

          City : Edmonton

          State_or_Province : Alberta

          Postal_Code : T6B 2X3

          Country : Canada

        Contact_Voice_Telephone : (780) 638-4491

        Contact_Facsimile_Telephone : (780) 422-1459

        Contact_Electronic_Mail_Address : AGS-Info@aer.ca

        Hours_of_Service : 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

Distribution_Liability : The Alberta Energy Regulator / Alberta Geological Survey (AER/AGS) licenses this information under the Open Government License - Alberta. Any references to proprietary software in our documentation, and/or any use of proprietary data formats in our releases, do not constitute endorsement by the AER/AGS of any manufacturer's product.

  Metadata_Reference_Information :

    Metadata_Date : 20241107

    Metadata_Contact :

      Contact_Information :

        Contact_Organization_Primary :

          Contact_Organization : Alberta Geological Survey

          Contact_Person : AGS Information Manager

        Contact_Position : AGS Information Manager

        Contact_Address :

          Address_Type : mailing and physical

          Address : Alberta Energy Regulator

          Address : 2th Floor, Twin Atria Building

          Address : 4999-98 Avenue NW

          City : Edmonton

          State_or_Province : Alberta

          Postal_Code : T6B 2X3

          Country : Canada

        Contact_Voice_Telephone : (780) 638-4491

        Contact_Facsimile_Telephone : (780) 422-1459

        Contact_Electronic_Mail_Address : AGS-Info@aer.ca

        Hours_of_Service : 8:00 a.m. to 12:00 p.m. and 1:00 p.m. to 4:30 p.m.

    Metadata_Standard_Name : FGDC Content Standard for Digital Geospatial Metadata

    Metadata_Standard_Version : FGDC-STD-001-1998

    Metadata_Time_Convention : local time

    Metadata_Access_Constraints : none

    Metadata_Use_Constraints : none