Identification_Information :

    Citation :

      Citation_Information :

        Originator : Alberta Energy Regulator

        Originator : Alberta Geological Survey

        Originator : Geng, H.

        Originator : Onojeghuo, A.

        Publication_Date : 2024

        Title : Distribution of Porosity Thickness in 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 2024-0014

        Publication_Information :

          Publication_Place : Edmonton, Alberta, Canada

          Publisher : Alberta Geological Survey

        Online_Linkage : https://ags.aer.ca/publication/dig-2024-0014

    Description :

      Abstract : This dataset includes the porosity-thickness (PHI*H) values derived from wells for three geological units in Alberta: the Leduc Formation, the combined Swan Hills and Slave Point formations, and the Granite Wash.

PHI*H is calculated by multiplying net reservoir thickness (H) by average porosity (PHI) at each well location. H is determined from logs by using petrophysical cutoffs, while PHI is interpreted from logs and calibrated with core data. PHI*H is an estimate of total pore space per unit area at each well location.

The parameter cutoffs used for net reservoir thickness determination for the respective geological units are as follows:

1) Leduc Formation: porosity >=3%

2) combined Swan Hills and Slave Point formations: porosity >=3%

3) Granite Wash: volume of shale <=40% and porosity >=8%

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 well-derived PHI*H values for each evaluated geological unit for the assessment of total pore volume potentially available for storing geothermal fluids.

      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 : atlas

      Theme_Keyword : geology

      Theme_Keyword : geothermal

      Theme_Keyword : granite wash

      Theme_Keyword : leduc formation

      Theme_Keyword : phih

      Theme_Keyword : pore volume

      Theme_Keyword : porosity

      Theme_Keyword : porosity thickness

      Theme_Keyword : slave point formation

      Theme_Keyword : swan hills formation

      Theme_Keyword : wells

    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

  Access_Constraints : Public

  Use_Constraints : Acknowledgement of the Alberta Energy Regulator / Alberta Geological Survey as the originator / source of this information is required as described in the Open Government License - Alberta.

  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 : 4th 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 : Geng, H.

      Originator : Babakhani, M.

      Originator : Onojeghuo, A.

      Publication_Date : 2024

      Title : Distribution of Porosity Thickness in 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 2024-0017

      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 log-derived porosity is calibrated with core data despite their different resolutions. Given the reservoir's heterogeneity and the uncertainties associated with old core data, the log-predicted porosity is a reliable representation of core porosity.

  Logical_Consistency_Report : The wireline logs and core analysis data used in this study have been collected over decades, by different parties, and using different methods.

  Completeness_Report : All wells with suitable logs and AGS interpreted stratigraphic picks for the top and bottom of the respective geological unit are included in this dataset. No nulls are reported for porosity thickness values (PHI*H) from wells.

  Positional_Accuracy :

    Horizontal_Positional_Accuracy :

   Horizontal_Positional_Accuracy_Report : The well locations may be accurate to within millimetres depending on surveying standards at the time of drilling.

    Vertical_Positional_Accuracy :

   Vertical_Positional_Accuracy_Report : The well locations may be accurate to within millimetres depending on surveying standards at the time of drilling.

  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 : AER corporate database

     Source_Contribution : well-log and core analysis data to calculate PHI*H

    Process_Step :

   Process_Description : A core-log calibration approach was employed to calculate porosity-thickness from well logs. The process involved the following steps:

1) Publicly available porosity data from core analysis were compiled and depth was shifted to logging depth;

2) Porosity models (calculation formulas) were derived for different geological units and different geological facies by calibrating core porosity with logs;

3) The porosity models were propagated across Alberta where suitable porosity logs (namely neutron porosity, bulk density, and sonic logs) are available, and continuous porosity logs were calculated from input logs;

4) Net reservoir intervals were determined by applying petrophysical cutoffs on logs, and reservoir summation was performed over the respective geological unit. The output consists of net reservoir thickness (H), average porosity over net reservoir intervals (PHI), and their product porosity thickness (PHI*H).

   Process_Date : 2024

  Data_Quality_Information :

Spatial_Data_Organization_Information :

Spatial_Reference_Information :

Entity_and_Attribute_Information : Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: DIG_2024_0014

Entity_Type_Definition: This dataset includes the porosity-thickness (PHI*H) values derived from wells that penetrate the Leduc Formation, the combined Swan Hills and Slave Point formations, and the Granite Wash across Alberta.

Entity_Type_Definition_Source: Alberta Geological Survey

Attribute:

Attribute_Label: UWI

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Unique identifier assigned by the AER to a licensed wellbore as described in AER Directive 059.

Attribute:

Attribute_Label: Geol_unit

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Name of geological unit.

Attribute:

Attribute_Label: KB_el_masl

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Elevation of the well's kelly bushing, in metres above sea level, Canadian Geodetic Vertical Datum of 1928.

Attribute:

Attribute_Label: Lat_NAD83

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Latitude, NAD83 datum, decimal degrees north.

Attribute:

Attribute_Label: Long_NAD83

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Longitude, NAD83 datum, decimal degrees east.

Attribute:

Attribute_Label: E_10TM83

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Easting, 10 TM, NAD83, central meridian -115º.

Attribute:

Attribute_Label: N_10TM83

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Northing, 10 TM, NAD83, central meridian -115º.

Attribute:

Attribute_Label: T_TVD_m

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: True vertical depth of geological unit top, in metres below kelly bushing.

Attribute:

Attribute_Label: B_TVD_m

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: True vertical depth of geological unit base, in metres below kelly bushing.

Attribute:

Attribute_Label: Gross_m

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Gross thickness of geological unit, in metres.

Attribute:

Attribute_Label: Net_rsv_m

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Net reservoir thickness in metres, using 3% porosity cutoff.

Attribute:

Attribute_Label: Avg_PHI

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Average porosity over net reservoir interval expressed as a fraction of 1.

Attribute:

Attribute_Label: PHIH_m

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Porosity thickness in metres over net reservoir interval.

Attribute:

Attribute_Label: Score_PHIH

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Porosity-thickness score.

Attribute:

Attribute_Label: Crit_PHIH

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Formation-specific criteria for scoring porosity-thickness (PHI*H) wells, in metres.

Attribute:

Attribute_Label: Publisher

Attribute_Definition_Source: Alberta Geological Survey

Attribute_Definition: Organization that published the dataset.

  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 : 4th 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 : 20241031

    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 : 4th 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